Traction

1. High-Yield Summary

• Primary Clinical Indications: Skeletal traction provides rapid provisional reduction, length restoration, and ligamentotaxis for displaced femoral shaft fractures (AO/OTA 32), unstable pelvic ring disruptions (vertical shear / Tile C), acetabular fractures with central or superior hip dislocation, and unstable peri-articular distal tibia (pilon) fractures, while cervical skeletal traction achieves rapid closed reduction of subaxial cervical facet subluxations. Skin traction provides temporary immobilization and symptomatic stabilization for pediatric femur fractures or adult hip fractures awaiting imminent surgery.
• The Critical Move: Drill trajectory selection must strictly follow directional neurovascular safety corridors: Medial-to-Lateral for distal femoral pins (entering at the adductor tubercle to protect the superficial femoral artery in Hunter’s canal), Lateral-to-Medial for proximal tibial pins (entering 2 cm posterior and 2 cm inferior to the tibial tubercle to protect the common peroneal nerve at the fibular neck), and Medial-to-Lateral for calcaneal pins (entering 2 cm posterior and 2 cm inferior to the medial malleolus to protect the posterior tibial neurovascular bundle).
• Catastrophic Errors to Avoid:
  • Drilling a distal femoral pin lateral-to-medial, which directs the drill bit into the adductor (Hunter) canal, risking superficial femoral or popliteal artery laceration, arteriovenous fistula, or pseudoaneurysm.
  • Inserting a distal femoral pin too distally or anteriorly (within 5 cm of the patellar superior pole), violating the suprapatellar synovial pouch and inducing suppurative septic knee arthritis.
  • Drilling a proximal tibial pin medial-to-lateral, which risks direct transection or wrap injury of the common peroneal nerve as the drill exits the lateral cortex near the fibular neck.
  • Placing skeletal pins across open physeal plates in pediatric patients, precipitating premature asymmetric physeal closure, angular limb deformity, or limb length discrepancy.
  • Overweighting skin traction (>5 to 7 lbs / >2.3 to 3.2 kg) or applying circumferential compression over the fibular neck, precipitating skin sloughing, decubitus heel ulceration, or common peroneal neurapraxia with permanent foot drop.
  • Deploying Bryant’s traction in children older than 2 years or weighing greater than 30 lbs (13.6 kg), which produces catastrophic lower extremity compartment syndrome, vascular collapse, and Volkmann-like ischemic contracture.

2. Indications

Orthopaedic traction functions as a critical bridge in damage control orthopaedics and acute trauma resuscitation. By re-establishing limb length and restoring soft-tissue tension through ligamentotaxis, traction diminishes intra-compartmental hemorrhage, relieves muscle spasm, reduces pressure on compromised neurovascular structures, and prevents progressive soft-tissue contracture prior to definitive osteosynthesis.

Absolute Indications

• Displaced Diaphyseal Femur Fractures (AO/OTA 32): Length-unstable, comminuted, or spiral femoral shaft fractures requiring provisional restoration of length, axis, and rotation in polytrauma patients undergoing damage control resuscitation prior to definitive intramedullary nailing.
• Unstable Pelvic Ring Disruptions (Tile Type C / Young-Burgess Vertical Shear): Cranial migration of an unstable hemipelvis greater than 1 to 2 cm, where high-weight distal femoral skeletal traction provides distal axial counterforce to restore pelvic symmetry and optimize soft-tissue conditions before percutaneous or open sacroiliac fixation.
• Acetabular Fractures with Central or Superior Hip Dislocation: Dislocation or medial femoral head protrusion through a disrupted medial wall or transverse fracture line, requiring continuous distal femoral traction to maintain joint congruency, eliminate femoral head impaction, and preserve chondral and vascular viability.
• Subtrochanteric Femur Fractures: High-energy subtrochanteric patterns with flexion, abduction, and external rotation of the proximal segment (driven by iliopsoas and abductors), where sustained axial traction counteracts massive shortening forces.
• Unstable Distal Tibia / Pilon Fractures (AO/OTA 43) and Fracture-Dislocations: Calcaneal skeletal traction to re-establish articular length and column alignment, offload the articular surface, and achieve cutaneous detumescence prior to delayed open reconstruction.
• Cervical Facet Subluxations and Bifacet Dislocations: Emergent closed reduction of subaxial cervical fracture-dislocations using Gardner-Wells tongs or halo traction under continuous awake neurologic monitoring and serial fluoroscopy.

Relative Indications

• High-Energy Proximal Tibial Fractures (AO/OTA 41): Severe bicondylar tibial plateau fractures with marked shortening or displacement, where distal femoral or proximal tibial traction provides temporary ligamentotaxis pending definitive external fixation or staged ORIF.
• Adult Hip Fractures (Femoral Neck and Intertrochanteric Fractures): Temporary skin traction (Buck’s traction) for positioning and symptomatic relief while awaiting surgical fixation within 24 hours, noting that randomized trials demonstrate equivalent analgesic efficacy to simple pillow support without the risk of skin shear.
• Pediatric Diaphyseal Femur Fractures: Russell’s traction in children aged 2 to 10 years as provisional stabilization prior to hip spica casting or flexible intramedullary nailing.
• Polytrauma with Resuscitative Shock: Severe systemic physiological instability (hypothermia, coagulopathy, acidosis) precluding immediate transfer to the operating suite for external fixation.

Contraindications

• Absolute Contraindications:
  • Local soft-tissue infection, cellulitis, extensive thermal burns, or open wound contamination directly over the planned pin entry or exit corridor.
  • Ipsilateral ligamentous disruption of the knee (for proximal tibial traction): Applying tibial traction across an unstable or dislocated knee joint causes uncontrolled distraction across the joint, precipitating traction-induced sciatic or common peroneal nerve neurotmesis and popliteal artery intimal disruption.
  • Ipsilateral bone fracture distal to the pin site: Placing distal femoral traction when an ipsilateral distal femoral metaphyseal-articular fracture is present, or tibial traction when a distal tibial shaft fracture is present.
  • Open physeal plates in pediatric patients: Placing skeletal pins through or adjacent to the proximal tibial physis or distal femoral physis, risking premature asymmetric physeal arrest.
  • Cranial vault fractures or calvarial defects (for cervical skull traction): Linear or depressed skull fractures at tong pin placement sites, risking calvarial perforation or intracranial penetration.
  • Bryant’s traction in patients older than 2 years or weighing greater than 30 lbs (13.6 kg): Vertical skin traction in older or heavier children induces severe venous hypertension, decreased perfusion pressure, compartment syndrome, and limb gangrene.
• Relative Contraindications:
  • Severe osteopenia, severe osteomalacia, or pathological bone with high risk of pin toggle, cut-out, or fracture through the pin track.
  • Severe peripheral arterial occlusive disease (especially for calcaneal traction and skin traction), precluding safe cutaneous pressure or causing distal ischemic compromise.
  • Severe agitated delirium or uncooperative behavioral state where the patient cannot safely tolerate bedside hardware, presenting high risk of apparatus dislodgement or self-inflicted soft-tissue laceration.

3. Preoperative Planning & Biomechanics

Imaging & Assessment

Pre-procedural radiographic evaluation requires orthogonal anteroposterior (AP) and lateral views of the entire injured segment, including the joints immediately proximal and distal to the fracture. Dedicated orthogonal radiographs of the planned pin site (distal femur/knee, proximal tibia/knee, or calcaneus/ankle) must be analyzed to verify intact cortical stock, rule out occult articular or metaphyseal fracture extension, and confirm physeal closure status. In pelvic and acetabular trauma, high-resolution CT imaging is mandatory to verify that the distal femoral metaphyseal corridor is free from occult fractures and to evaluate joint congruency.

A rigorous neurovascular examination must precede any traction application. Document distal pulses (femoral, popliteal, dorsalis pedis, posterior tibial) by palpation and Doppler ultrasonography, calculating an ankle-brachial index (ABI) if knee dislocation or severe displacement is suspected. Granular sensorimotor documentation must evaluate deep peroneal (first webspace sensation, tibialis anterior and extensor hallucis longus motor), superficial peroneal (dorsal foot sensation, foot eversion), tibial (plantar sensation, flexor hallucis longus motor), and femoral nerve branches.

Pin Selection & Tension Bows

• Smooth Steinmann Pins (4.0 mm to 4.8 mm / 5/32 to 3/16 inch): The gold standard for adult distal femoral and proximal tibial skeletal traction. Smooth cylindrical geometry distributes axial load evenly across cortical contact points and avoids the severe stress risers inherent to threaded pins. Smooth pins require a rigid Bohler or modern universal traction bow equipped with secure pin-clamp chucks to prevent axial sliding through bone.
• Threaded Steinmann Pins: Feature central or end threads that provide immediate cortical purchase and resist axial sliding. However, threaded pins introduce significant stress concentrations at the thread-shank junction, predisposing the pin to fatigue fracture under heavy traction loads. Furthermore, threaded pins strip cancellous bone and increase bone necrosis upon removal. Smooth pins are universally preferred for temporary traction.
• Kirschner Wires (1.6 mm to 2.4 mm) and Calibrated Tension Bows: Kirschner wires possess minimal bending rigidity unless tensioned. When mounted on a Kirschner wire tension bow tightened to 100 to 120 kg (220 to 265 lbs) of tension, axial wire tension transforms bending moments into pure tensile loads. This setup is preferred in pediatric patients, small-stature adults, or calcaneal traction where a smaller osseous footprint is desired.
• Traction Bow Mechanics: The traction bow must be positioned strictly perpendicular to the pin axis and parallel to the line of pull. Bohler bows feature threaded end nuts or clamp chucks that lock the smooth Steinmann pin securely, preventing the pin from acting as an abrasive piston within the bone.

Biomechanical Principles & Weight Calculations

The biomechanics of skeletal traction rely on ligamentotaxis: sustained longitudinal tension applied to intact periosteal envelopes, muscular fascial sleeves, and joint capsules transforms hoop stresses into radial compressive forces that align displaced bone fragments. Elevating the thigh on a support frame with 20 to 30 degrees of knee flexion relaxes the gastrocnemius and hamstring muscle groups, neutralizing posterior apex deformity and facilitating axial restoration.

Weight calculations must strictly adhere to validated clinical formulations:

• Distal Femoral Skeletal Traction: 10% to 15% of total body weight (typically 15 to 30 lbs / 7 to 14 kg). Highly muscular patients with shortened femoral shaft fractures may require up to 20% of body weight for initial disimpaction, followed by titration after serial radiographic confirmation.
• Proximal Tibial Skeletal Traction: 10% of total body weight (typically 10 to 20 lbs / 5 to 9 kg).
• Calcaneal Skeletal Traction: 8% to 10% of total body weight (typically 10 to 15 lbs / 4.5 to 7 kg).
• Cervical Skeletal Traction (Gardner-Wells Tongs): Initial baseline weight of 5 lbs (2.3 kg) for the head, plus 5 lbs (2.3 kg) per cervical intervertebral level to the injury site (e.g., C5-C6 dislocation: 10 to 15 lbs initial). Weights are escalated sequentially in 5-lb increments under continuous clinical neurologic checks and serial lateral fluoroscopy, up to a maximal guideline of 10 lbs per vertebral level (not exceeding 50 to 70 lbs).
• Skin Traction (Buck’s Traction): Strictly capped at 5 to 7 lbs (2.3 to 3.2 kg, or approximately 10% of limb weight, absolute maximum 3 to 4 kg). Skin-fascial shear stresses exceed cutaneous capillary perfusion pressure (>30 mmHg) when loads exceed 7 lbs, triggering ischemic skin sloughing, blister formation, and compressive neurapraxia.

4. Patient Positioning & Setup

Bed Setup & Splint Assembly

The patient is positioned supine on a rigid orthopaedic trauma bed equipped with an overhead Balkan frame or steel overhead crossbars capable of supporting cantilevered pulley assemblies without mechanical deflection. Patient body weight serves as the essential countertraction mass. For lower extremity traction, the foot of the bed must be elevated into 10 to 15 degrees of Trendelenburg position (or supported on 15 to 20 cm bed blocks). Failure to elevate the bed allows the patient to slide distally, impinging the traction bow or foot against the footboard and completely neutralizing the effective traction weight. For cervical skull traction, the head of the bed is placed in 10 to 15 degrees of reverse Trendelenburg.

Splint assembly requires careful limb support:

• Bohler-Braun Frame: A rigid metal frame supporting the thigh on an inclined ramp, maintaining 30 to 45 degrees of knee flexion, and supporting the lower leg horizontally. The heel must hang completely free in the recess between the calf support and foot drop bar to prevent decubitus heel ulceration.
• Thomas Splint with Pearson Attachment: A half-ring or full-ring thigh splint with a hinged Pearson knee attachment that permits independent adjustment of hip flexion, knee flexion, and longitudinal traction vectors while facilitating balanced suspension.
• Pulleys and Cords: Non-stretch, braided nylon or Dacron cords running through frictionless, ball-bearing pulleys aligned strictly with the mechanical vector. Free-hanging weight plates must be suspended unobstructed off the floor and away from bed frames at all times.

Local Anesthesia & Sterile Field Preparation

Skin preparation requires a circumferential surgical scrub using 2% chlorhexidine gluconate (CHG) in 70% isopropyl alcohol with a minimum 3-minute contact dry time. Apply wide sterile drapes, placing sterile towels beneath the limb and securing a fenestrated drape over entry and exit landmarks.

Local anesthesia is performed using 15 to 20 mL of 1% or 2% lidocaine plain (optionally buffered 9:1 with 8.4% sodium bicarbonate to reduce injection stinging), or a 50:50 mixture of 1% lidocaine with 0.25% bupivacaine for prolonged post-procedural analgesia. Begin with a 25-gauge needle to raise a dermal wheal at the entry site, followed by a 21-gauge or 18-gauge 3.5-inch spinal needle directed perpendicular to bone. Infiltrate the subcutaneous fat, deep fascia, and periosteum. Generously flood the subperiosteal corridor with 8 to 10 mL of anesthetic, feeling the needle tip firmly against the bony cortex. Palpate the expected collinear exit point on the contralateral cortex and repeat identical dermal, fascial, and subperiosteal infiltration with 5 to 8 mL. Allow a full 5 minutes of dwell time before skin incision to ensure absolute periosteal analgesia.

In hemodynamically stable patients, supplementary intravenous analgesia and sedation (e.g., fentanyl 1 mcg/kg and midazolam 1-2 mg, or low-dose ketamine 0.2-0.3 mg/kg) should be administered under continuous pulse oximetry, cardiac monitoring, and supplemental oxygen.

5. Anatomical Corridors & Neurovascular Danger Zones

Distal Femoral Corridor (Medial-to-Lateral)

The distal femoral traction pin must be inserted strictly in a Medial-to-Lateral direction. The starting point is located at the level of the adductor tubercle, palpable on the superior aspect of the medial femoral condyle, approximately 2 fingerbreadths (3 to 4 cm) proximal to the superior pole of the patella, positioned at the junction of the anterior two-thirds and posterior one-third of the femoral shaft in the sagittal plane.

The anatomical rationale for this trajectory is absolute neurovascular protection. The superficial femoral artery (SFA) and vein travel through the subsartorial (adductor / Hunter) canal on the anteromedial thigh, piercing the adductor hiatus in the adductor magnus tendon approximately 8 to 10 cm proximal to the adductor tubercle to enter the popliteal fossa as the popliteal vessels. A medial-to-lateral trajectory places the starting point under direct digital palpation, directly anterior and inferior to the adductor magnus insertion. If a pin is inserted lateral-to-medial, the unguided drill bit traverses blindly toward the medial side, where plunging or proximal/posterior drift frequently penetrates Hunter’s canal, causing transection, pseudoaneurysm, or arteriovenous fistula of the femoral artery, popliteal vessels, or saphenous nerve. Furthermore, the suprapatellar synovial pouch of the knee joint extends up to 5 cm proximal to the superior pole of the patella beneath the quadriceps tendon. Pins placed distal to the adductor tubercle or within 2 cm of the patellar upper pole penetrate the capsule, establishing direct communication between the external pin tract and the knee joint cavity, precipitating catastrophic septic arthritis.

Proximal Tibial Corridor (Lateral-to-Medial)

The proximal tibial traction pin must be inserted strictly in a Lateral-to-Medial direction. The anatomical landmark is precisely 2 cm posterior and 2 cm inferior to the apex of the tibial tubercle.

The common peroneal (fibular) nerve courses along the posterior border of the biceps femoris tendon, winds anteriorly around the lateral aspect of the fibular neck (2 to 3 cm distal to the tip of the fibular head), and divides into superficial and deep peroneal branches. Starting lateral-to-medial allows the surgeon to directly palpate the fibular head and neck, positioning the drill entry point well anterior and inferior to the nerve path under direct tactile control. Conversely, a medial-to-lateral drill exits the lateral cortex blindly; minor posterior obliquity or plunging causes direct penetration or drill wrapping of the common peroneal nerve, producing permanent foot drop and first webspace/dorsal foot anesthesia. The anterior tibial artery passes forward through the upper aperture of the interosseous membrane approximately 4 to 5 cm distal to the lateral tibial articular margin, remaining safely posterior and inferior to this corridor. In skeletally immature patients, the undulating proximal tibial physis and the anterior tibial tubercle apophysis represent absolute danger zones; pins must never cross open physes due to the risk of asymmetric premature arrest and recurvatum deformity.

Calcaneal Corridor (Medial-to-Lateral)

The calcaneal pin must be inserted strictly in a Medial-to-Lateral direction. The landmark is located 2 cm posterior and 2 cm inferior to the tip of the medial malleolus (midway along a line connecting the medial malleolus tip to the posterior-inferior contour of the heel).

The posterior tibial neurovascular bundle (tibial nerve, posterior tibial artery, venae comitantes) traverses the tarsal tunnel behind the medial malleolus beneath the flexor retinaculum, dividing into the medial and lateral plantar nerves and arteries. Starting medial-to-lateral enables the surgeon to palpate the medial malleolus and posteromedial soft-tissue structures, introducing the pin anterior and inferior to the bifurcation. A lateral-to-medial pin exits blindly on the medial side, where erratic trajectory easily lacerates the medial/lateral plantar nerves or posterior tibial vessels, causing plantar sensory loss or profuse arterial bleeding. On the lateral side, the sural nerve and lesser saphenous vein course along the posterolateral hindfoot between the lateral malleolus and Achilles tendon; blunt soft-tissue protection at the exit site mitigates sural neurapraxia.

Cervical Skull Traction Corridors

For Gardner-Wells tongs, pin insertion points are situated 1 cm superior to the apex of the pinna of the ear, aligned directly over the external auditory meatus. The pins must be positioned strictly below the equator (maximum skull circumference) of the cranium. Placing pins above the equator causes the tongs to slip off superiorly when axial traction loads are engaged. Structures at risk include the superficial temporal artery and vein, the auriculotemporal nerve, and the temporalis muscle belly.

For halo traction, anterior pins are positioned in the safe zone of the frontal bone: 1 cm superior to the supraorbital rim, over the lateral two-thirds of the eyebrow. This avoids the supraorbital and supratrochlear neurovascular bundles medially and the frontal sinus centrally. It must remain medial to the temporal fossa and temporal crest to avoid the temporalis muscle (which causes severe mastication pain) and superficial temporal artery. Posterior pins are inserted 180 degrees directly opposite the anterior pins, approximately 1 cm above and posterior to the ear pinna in the posterolateral parieto-occipital calvarium.

6. Surgical Technique

Distal Femoral Skeletal Pin Placement

• Palpate: Identify the adductor tubercle on the medial distal femur and the superior pole of the patella. Confirm the entry point at the adductor tubercle, 2 fingerbreadths proximal to the patella and at the junction of the anterior two-thirds and posterior one-third of the femoral shaft.
• Infiltrate: Administer 15 mL of local anesthetic subperiosteally into the medial entry cortex, and 5 mL into the anticipated lateral exit corridor.
• Incise: Make a 1 cm longitudinal stab incision with a #11 blade parallel to the long axis of the femur through the skin and fascia lata directly down to bone.
• Dissect: Perform blunt spreading with a curved mosquito hemostat down to the periosteum to create a clear soft-tissue track that prevents myofascial wrapping during drilling.
• Seat: Pass a dedicated soft-tissue sleeve down to the medial femoral cortex. Introduce a sharp, smooth 4.8 mm (or 4.0 mm) Steinmann pin through the sleeve, seating the trocar tip firmly against the cortex.
• Align: Orient the drill strictly perpendicular to the femoral diaphyseal axis in the coronal plane, and perfectly parallel to the knee joint flexion-extension axis in the axial and sagittal planes. Avoid anterior angulation that risks skiving into the suprapatellar pouch.
• Drill: Advance the drill using slow, high-torque or oscillating mode with constant cold saline irrigation to prevent thermal osteonecrosis. Feel the resistance of the thick medial cortex, followed by smooth progression through the cancellous metaphyseal bone, and firm engagement of the lateral cortex.
• Tent and Incise: Advance the pin until it tents the lateral skin. Stop drilling immediately. Make a precise 1 cm longitudinal stab incision over the tented skin directly onto the emerging pin point.
• Advance: Push or drill the pin through the lateral incision until equal lengths of the pin protrude medially and laterally (approximately 8 to 10 cm per side).
• Secure: Slide sterile split gauze sponges saturated with chlorhexidine over each pin site. Attach the Bohler traction bow, tightening the clamp chucks firmly so that the bow cannot toggle or shift. Cap the sharp pin ends with protective plastic guards or rubber stoppers.

Proximal Tibial Skeletal Pin Placement

• Palpate: Identify the tibial tubercle and fibular head. Mark the landmark 2 cm posterior and 2 cm inferior to the prominent apex of the tibial tubercle on the lateral tibial condyle.
• Infiltrate: Infiltrate 10 to 15 mL of local anesthetic into the lateral and medial subperiosteal envelopes.
• Incise: Make a 1 cm longitudinal skin incision on the lateral aspect down to bone, taking care to avoid the anterior compartment musculature.
• Dissect: Spread cleanly down to the lateral tibial cortex with a curved hemostat.
• Seat: Introduce a soft-tissue sleeve and seat a 4.0 mm or 4.8 mm smooth Steinmann pin directly against bone.
• Align: Maintain a strict horizontal trajectory, drilling from lateral to medial, perpendicular to the tibial shaft and parallel to the tibial articular surface.
• Drill: Traverse the lateral cortex, cancellous proximal metaphysis, and medial cortex under low speed with cold saline irrigation.
• Tent and Incise: When the pin tents the medial subcutaneous skin, make a 1 cm longitudinal incision over the tip and push the pin through.
• Mount: Ensure symmetric pin protrusion, apply sterile pin site sponges, mount the traction bow, and cap pin tips.

Calcaneal Pin Insertion

• Palpate: Identify the medial malleolus tip. Mark the target point 2 cm posterior and 2 cm inferior to the medial malleolus tip.
• Infiltrate: Infiltrate 10 mL of local anesthetic into the medial and lateral calcaneal periosteum.
• Incise: Make a 1 cm longitudinal incision on the medial hindfoot.
• Spread: Perform meticulous blunt spreading with a curved hemostat directly down to the hard calcaneal cortex, pushing aside branches of the medial calcaneal nerves and plantar vessels.
• Seat: Introduce a pin guide sleeve against the medial calcaneal wall. Insert a 4.0 mm smooth Steinmann pin or a 2.0 mm to 2.4 mm Kirschner wire.
• Align: Align the pin strictly perpendicular to the sagitally oriented lateral and medial walls of the calcaneal tuberosity, parallel to the plantigrade foot sole.
• Drill: Drill from medial to lateral through the dense calcaneal cortices.
• Exit: Incise the tented lateral skin, advance the pin to center it, and lock into a Bohler bow or tensioned Kirschner wire bow (tightened to 100-120 kg).

Application of Skin Traction (Buck and Russell)

• Inspect: Perform a comprehensive skin assessment of the lower extremity, ensuring the absence of deep abrasions, open wounds, frail elderly skin tears, or peripheral arterial insufficiency.
• Prep: Clean and dry the limb. Apply a light coating of tincture of benzoin to enhance adhesive friction without irritating skin.
• Position Foam Boot / Traction Straps:
  • For prefabricated Buck’s boots, align the heel securely in the heel cutout, ensuring the plastic spreader plate clears the plantar foot by 5 cm.
  • For adhesive skin traction, place longitudinal adhesive foam strips along the medial and lateral aspects of the calf and thigh, centered along the coronal axis.
• Malleolar & Fibular Neck Padding:
  • Apply generous cotton or synthetic cast padding over the medial and lateral malleoli and the Achilles tendon to avoid pressure ulceration.
  • Crucial Safety Check: Apply zero compressive wrap over the proximal lateral calf at the fibular head and neck to protect the common peroneal nerve.
• Wrap: Apply elastic bandages (Ace wraps) in a figure-eight or overlapping spiral manner from distal (above the malleoli) to proximal, finishing 5 cm distal to the popliteal crease. Apply light, uniform tension; avoid circumferential strangulation.
• Engage Suspension (Russell’s Configuration):
  • If assembling Russell’s traction, place a padded sling beneath the distal thigh/popliteal fossa. Connect a vertical cord to an overhead pulley, and connect the Buck’s boot cord to a distal pulley. Join the vectors through a single continuous rope system to create a 45-degree resultant vector that suspends the knee while applying longitudinal traction.
• Hang Weight: Suspend a calibrated weight of 5 to 7 lbs (2.3 to 3.2 kg). Never exceed 7 lbs. Confirm the spreader bar prevents straps from rubbing against the malleoli.

Critical Move

The irreversible procedural step in skeletal traction placement is The Cortical Entry Squeeze and Tented Exit Incision Under Soft-Tissue Protection. The most catastrophic technical error during bedside skeletal traction is soft-tissue wrapping: rotating drill flutes or pin shanks catching mobile myofascial or neurovascular bundles, tearing vessels or lacerating nerves.

To execute this move safely:

• The soft-tissue sleeve must be held with firm axial pressure directly against the entry cortex throughout drilling.
• Stop drilling the exact instant the far cortex is breached and tactile give is felt.
• Palpate the emerging pin tip beneath the tented skin, cut the skin cleanly away from the point with a scalpel, and gently tap or push the pin through rather than spinning the drill through mobile subcutaneous fat and skin.

7. Pearls and Pitfalls

Pearls

• Two-Finger Rule for Distal Femur: Place the entry point two fingerbreadths proximal to the patella and two fingerbreadths anterior to the posterior femoral shaft cortex to reliably capture the dense metaphyseal bone of the adductor tubercle while staying safely proximal to the suprapatellar pouch.
• Hand-Driven Far Cortex Purchase: When traversing the far cortex, release the drill trigger and rotate the drill chuck by hand or use an oscillating mode to prevent sudden plunging and soft-tissue wrap.
• Direct Pin Clamping: Ensure the traction bow clamps the pin with maximum rigidity. A loose bow allows the pin to toggle axially within the bone, converting a stable osseous bridge into an abrasive piston that creates osteolysis, pin loosening, and ascending pin tract infection.
• The 45-Degree Knee Flexion Rule: In femoral shaft traction, flexing the knee 30 to 45 degrees over a Braun frame relaxes the gastrocnemius muscle attachment on the posterior femoral condyles, eliminating the recurvatum/posterior apex deforming moment on the distal fracture fragment.

Pitfalls

• Lateral-to-Medial Femoral Pin Entry: Drilling lateral-to-medial violates the primary safety corridor, directing the drill into the adductor canal and risking fatal or limb-threatening superficial femoral or popliteal artery pseudoaneurysm.
• Medial-to-Lateral Tibial Pin Entry: Drilling medial-to-lateral directs the blind exit toward the common peroneal nerve winding around the fibular neck, risking complete permanent foot drop.
• Inadvertent Intra-Articular Pin Placement: Placing a distal femoral pin too distal/anterior (within 5 cm of patella) or a proximal tibial pin too proximal penetrates the joint capsule, converting temporary traction into suppurative septic arthritis.
• Overweighted Skin Traction: Applying greater than 7 lbs of weight to a Buck’s traction setup produces skin blister formation, epidermal shear sloughing, and full-thickness dermal necrosis over the heel and Achilles tendon.
• Unrecognized Knee Dislocation in Tibial Traction: Applying proximal tibial traction in a limb with an unrecognized multiligamentous knee disruption pulls the knee joint apart, tearing popliteal vessels and stretching the tibial and peroneal nerves.

8. Postoperative & Traction Maintenance Care

Daily Pin Site Care Protocols

Inspect pin entry and exit sites every 24 hours. Cleanse the skin-pin interface using sterile cotton-tipped applicators soaked in 2% chlorhexidine gluconate solution or sterile 0.9% normal saline. Biologic crusts composed of dried serosanguinous exudate provide a natural protective barrier against bacterial colonization; crusts should be left intact unless signs of purulent retention, fluctuating erythema, or local cellulitis develop. If removal is required, gently soften with saline-soaked gauze prior to gentle removal; never forcefully pick or scrape dry crusts. Apply non-shedding, sterile split sponges around each pin. Avoid bulky or circumferential elastic wrapping around the pin sites, which traps moisture, macerates the skin, and conceals early signs of cellulitis.

Neurovascular & Compartment Surveillance

Perform and document comprehensive neurovascular checks every 2 to 4 hours during the first 24 hours post-application, and every 8 hours thereafter. Although skeletal traction restores length, in closed high-energy fracture-dislocations (e.g., tibial plateau, femoral shaft with massive hematoma, or pilon fractures), acute traction can decrease compartmental compliance and increase intracompartmental pressures. Monitor for the cardinal signs of compartment syndrome: pain out of proportion, pain with passive stretch of digits (deep peroneal/tibial nerve), pallor, pulselessness, paresthesias, and paralysis. If clinical signs of compartment syndrome arise, immediately remove traction weights and measure needle compartment pressures.

Mechanical Audits & Weight Management

Conduct daily traction maintenance rounds using a structured checklist:

• Free-Hanging Weights: Ensure weights hang entirely free from the floor, bed frame, or adjacent walls at all times.
• Pulley Alignment: Confirm cords track smoothly within the center of pulley wheels without jumping out of grooves or fraying.
• Spreader Bar Clearance: In skin traction, verify that the spreader bar prevents straps from impinging upon the malleoli.
• Footboard Clearance: Confirm that the patient has not slipped distally to touch the footboard, which negates the effective traction force.
• Bed Tilt / Countertraction: Verify that 10 to 15 degrees of Trendelenburg tilt is maintained.
• Pin Rigidity: Check pin collars and traction bow clamps to confirm zero axial translation of the pin through bone.

9. Outcome

Skeletal traction provides reliable restoration of femoral and tibial length, achieving 80% to 95% of anatomical length restoration within 24 to 48 hours of application when titrated against body-weight-adjusted loads. In polytrauma patients undergoing damage control resuscitation, temporary skeletal traction significantly reduces pain scores, diminishes intra-articular and fracture hematoma expansion, and preserves the surrounding soft-tissue envelope, facilitating subsequent definitive intramedullary nailing or open reduction and internal fixation with lower overall soft-tissue complication rates.

Conversely, contemporary high-level randomized controlled trials and Cochrane systematic reviews have profoundly redefined the role of routine preoperative traction for isolated proximal femur (hip) fractures in elderly patients. Large multicenter trials (Parker & Handoll 2006, Rosen et al. 2001, Resch & Thorngren 1998) demonstrated that routine preoperative skin or skeletal traction for hip fractures provides no statistically significant reduction in visual analog scale (VAS) pain scores, produces no reduction in narcotic consumption, and offers no measurable technical facilitation of fracture reduction during definitive surgery when compared to simple comfortable pillow support. Furthermore, skeletal traction in this elderly demographic was associated with increased patient discomfort and unnecessary invasive procedural morbidity. Consequently, modern orthopaedic trauma consensus guidelines restrict preoperative hip traction to exceptional cases with severe shortening, marked irreducible displacement, or prolonged surgical delays.

10. Complications

Complications of orthopaedic traction stem from technical insertion errors, mechanical surveillance failures, or prolonged immobilization:

11. Evidence-Based Synthesis

Modern clinical decision-making is grounded in high-quality randomized controlled trials and prospective registry analyses, corroborated by seminal biomechanical and anatomical descriptions.

12. References

• Parker MJ, Handoll HH. Pre-operative traction for fractures of the proximal femur in adults. Cochrane Database Syst Rev. 2006. doi:10.1002/14651858.CD000168.pub2 [Level I: Systematic Review / Meta-Analysis]
• Rosen JE, Chen FS, Hiebert R et al. Efficacy of preoperative skin traction in hip fracture patients: a prospective, randomized study. J Orthop Trauma. 2001. doi:10.1097/00005131-200102000-00001 [Level I: Randomized Controlled Trial]
• Resch S, Thorngren KG. Preoperative traction for hip fracture: a randomized comparison between skin and skeletal traction in 78 patients. Acta Orthop Scand. 1998. doi:10.3109/17453679809000929 [Level I: Randomized Controlled Trial]
• Obey MR, Berkes MB, McAndrew CM et al. Proximal Tibia Skeletal Traction: Technique and Indications. J Orthop Trauma. 2021. doi:10.1097/BOT.0000000000002160 [Level IV: Surgical Technique & Clinical Series]
• Kwon JY, Johnson CE, Appleton P et al. Lateral femoral traction pin entry: risk to the femoral artery and other medial neurovascular structures. J Orthop Surg Res. 2010. doi:10.1186/1749-799X-5-4 [Level IV: Anatomic & Surgical Safety Investigation]

13. Master Class Pro-Tip

The paramount technical pearl in skeletal traction is the absolute commitment to anatomical directionality: never drill toward a major neurovascular bundle that you cannot palpate and protect. In the distal femur, always drill medial-to-lateral, anchoring your entry index finger directly upon the adductor tubercle. Drilling lateral-to-medial is a blind voyage toward Hunter’s canal, where an exiting drill bit drifting even slightly cephalad or posterior can lacerate the superficial femoral or popliteal artery, transforming a routine bedside reduction into an emergent vascular catastrophe. In the proximal tibia, invert this rule and drill strictly lateral-to-medial, palpating the fibular head to enter safely anterior to the common peroneal nerve. Finally, always halt the drill the instant the far cortex gives way; never spin a drill bit through soft tissue and skin. Make a clean scalpel incision over the tented skin and advance the pin with gentle pressure or manual chuck rotation. Respecting these three geometric rules eliminates the catastrophic soft-tissue complications of orthopaedic traction.

Master Class Surgical Pearl: The Inviolable Directionality Corridors of Skeletal Traction