Joseph William Fielding

Joseph William Fielding, MD, FACS, FRCSC (February 17, 1923 – March 18, 1998), affectionately known throughout the international surgical community as “Bill” Fielding, was a preeminent twentieth-century Canadian-American orthopaedic surgeon, educator, biomechanist, and clinical visionary whose pioneering investigations transformed the diagnosis, pathomechanics, and surgical management of cervical spine disorders and proximal femoral trauma. Internationally acclaimed for formulating the definitive Fielding-Hawkins classification of atlantoaxial rotatory fixation, establishing the structural biomechanics and rupture thresholds of the transverse atlantal ligament, introducing dynamic cineroentgenography to spinal kinesiology, and classifying subtrochanteric femoral fractures, Fielding served as Director of Orthopaedic Surgery at St. Luke’s-Roosevelt Hospital Center, Clinical Professor of Orthopaedic Surgery at Columbia University College of Physicians and Surgeons, President of the American Academy of Orthopaedic Surgeons (AAOS), and Co-Founder and third President of the Cervical Spine Research Society (CSRS).

1. The Shoulders of Giants: Historical Context & Significance

During the mid-twentieth century, cervical spine surgery was an embryonic, hazardous discipline shrouded in diagnostic uncertainty and unpredictable surgical morbidity. Pathologies at the craniocervical junction—the intricate occiput-atlas-axis articulation—were particularly treacherous. Clinicians evaluating pediatric and adult patients presenting with sudden or progressive torticollis, rigid neck tilt, and painful muscle spasm were severely constrained by static, two-dimensional plain radiographs. The dynamic, living kinematics of the upper cervical spine were unmapped. Physicians lacked the ability to differentiate reliably between benign muscular wryneck, self-limiting rotatory subluxation, and life-threatening fixed atlantoaxial rotatory dislocation. Catastrophic neurological deterioration or sudden death could result from unrecognized upper cervical instability, while in other instances, children were subjected to months of ineffective traction or ill-conceived, hazardous manual manipulations.

“If I have seen further, it is by standing on the shoulders of giants.”

Sir Isaac Newton (1675) / Bernard of Chartres

Concurrently, the fundamental biomechanical restraints governing atlantoaxial stability remained largely speculative. Surgeons lacked quantifiable, objective thresholds to distinguish between physiological ligamentous laxity and catastrophic disruption of the primary stabilizing structure: the transverse atlantal ligament. The exact failure load of this crucial band, the mechanical significance of the anterior atlanto-dens interval (ADI), and the secondary competence of the alar and apical check ligaments had never undergone rigorous, calibrated biomechanical evaluation in the laboratory. Without objective metrics, surgical indications for posterior atlantoaxial arthrodesis versus conservative immobilization rested primarily on empirical conjecture.

In orthopaedic traumatology, fractures of the subtrochanteric femur represented an equally punishing challenge. Situated within a high-stress mechanical corridor where medial compressive forces reach immense magnitudes and the lateral femoral cortex endures extreme tensile distractile strain, subtrochanteric fractures routinely defeated contemporary internal fixation. Standard Jewett nail-plates, early side plates, and simple intramedullary pins failed with alarming frequency, breaking, bending, or cutting out from the femoral head and neck, resulting in crippling nonunions, varus deformities, and chronic invalidism. Surgeons lacked an anatomical and mechanical classification that accounted for fracture level relative to the lesser trochanter and the distinct muscular deforming vectors acting on the proximal fragment.

Into this challenging landscape stepped Joseph William Fielding. Blessed with an incisive analytical intellect, masterful surgical technique, and a passion for biomechanical truth, “Bill” Fielding bridged clinical practice, dynamic radiology, and laboratory mechanics. Through high-speed cineroentgenography, calibrated cadaveric mechanical testing, and exhaustive clinical series that became international benchmarks, Fielding illuminated the functional kinesiology of the cervical spine. His classic classifications of atlantoaxial rotatory fixation and subtrochanteric fractures provided generations of surgeons with the clear blueprints needed to navigate complex clinical dilemmas safely. Modern spine surgeons, pediatric orthopaedists, and traumatologists stand firmly upon the shoulders of J. William Fielding.

2. Early Life, Formative Education & Career Milestones

Education and Formative Surgical Training

Joseph William Fielding was born on February 17, 1923, in Toronto, Ontario, Canada. Raised in Toronto, he attended Runnymede Collegiate Institute, where he demonstrated early academic brilliance, leadership, and athletic vigor. In 1941, at the young age of eighteen, Fielding was admitted directly into the University of Toronto Faculty of Medicine. With the Second World War raging, medical education was placed on an accelerated year-round curriculum to meet the urgent wartime requirement for military medical officers. During his medical training, Fielding served in the reserve units of both the Royal Canadian Army Medical Corps (RCAMC) and the Royal Canadian Air Force (RCAF). He graduated with his Doctor of Medicine (MD) degree from the University of Toronto in 1946 at just twenty-three years of age.

Following graduation, Fielding completed a rotating internship at the Toronto General Hospital (1946–1947). Seeking comprehensive surgical and academic immersion, he moved to New York City in 1947 to undertake a residency in pathology at St. Luke’s Hospital under the renowned pathologist Dr. Leila Knox. This intensive year dedicated to post-mortem anatomy, gross tissue dissection, and microscopic histopathology provided Fielding with an uncompromising foundation in structural tissue mechanics and osseous biology, an intellectual grounding that profoundly informed his subsequent investigative career.

In 1948, Fielding entered the orthopaedic surgery residency program at St. Luke’s Hospital, then recognized as one of the preeminent orthopaedic centers in North America. There, Fielding trained under three legendary surgical pioneers: Dr. Mather Cleveland (esteemed hip surgeon, orthopaedic traumatologist, and past President of the AAOS), Dr. David M. Bosworth (visionary pioneer of skeletal tuberculosis chemotherapy, spinal reconstruction, and the Bosworth ankle fracture), and Dr. Frederick R. Thompson (celebrated designer of the Thompson hip hemiarthroplasty prosthesis). These mentors instilled in Fielding an uncompromising surgical discipline: the absolute necessity of anatomical precision, gentle tissue handling, biomechanical clarity, and exhaustive longitudinal clinical record-keeping.

Recognizing Fielding’s extraordinary clinical acumen and technical talent, Dr. David M. Bosworth invited Fielding to join his private and academic clinical practice upon the completion of his residency in 1951–1952. Their clinical partnership flourished for decades, creating an internationally renowned center of excellence for spinal surgery, reconstructive orthopaedics, and resident education at St. Luke’s Hospital. In 1957, Fielding was selected as an American-British-Canadian (ABC) Traveling Fellow, touring leading academic surgical centers across the United Kingdom and continental Europe, an experience that forged lifelong international collaborations and broadened his perspective on reconstructive surgery.

Academic Appointments and Clinical Leadership

In 1966, Dr. Fielding succeeded his mentor, Dr. David M. Bosworth, as Director and Chief of the Department of Orthopaedic Surgery at St. Luke’s Hospital Center (later St. Luke’s-Roosevelt Hospital Center), a leadership post he held with distinction for two decades until 1986. Under Fielding’s visionary guidance, St. Luke’s expanded its specialized surgical divisions, established cutting-edge biomechanical research laboratories, and became a world-renowned destination for complex spinal reconstruction and musculoskeletal traumatology. Academically, Fielding served as Clinical Professor of Orthopaedic Surgery at Columbia University College of Physicians and Surgeons, instructing generations of Columbia medical students, residents, and spine fellows in the classic “Master-to-Apprentice” tradition.

Fielding’s leadership extended far beyond his hospital wards to the highest echelons of national and international orthopaedic governance. In 1973, recognizing that the cervical spine presented unique anatomical, biomechanical, and neurological challenges that demanded focused, multidisciplinary investigation, Fielding co-founded the Cervical Spine Research Society (CSRS) alongside a vanguard of visionary surgeons and scientists, including J. Leonard Goldner, Ralph Cloward, and Lee Riley, Jr. Fielding served as the society’s third President from 1976 to 1977, guiding the young organization into becoming the preeminent international academic forum for cervical spine surgery. In enduring tribute to his foundational contributions and his dedication to nurturing young investigators, the CSRS established the prestigious “J. William Fielding Research Award”, conferred annually to recognize outstanding basic science and clinical research conducted by orthopaedic and neurosurgical residents and fellows.

In 1983, Fielding was elected President of the American Academy of Orthopaedic Surgeons (AAOS), the world’s largest orthopaedic professional body. In his presidential leadership, he championed uncompromising ethical standards, resident education, clinical research, and national healthcare advocacy. He also served as President of the New York State Society of Orthopaedic Surgeons in 1975. For many years, Fielding served with great distinction as Chairman of the Board of Trustees of The Journal of Bone and Joint Surgery (JBJS), rigorously safeguarding the editorial integrity, peer-review standards, and international prominence of the flagship journal in musculoskeletal medicine.

3. Core Orthopaedic Breakthroughs, Eponymous Signs & Innovations

Joseph William Fielding’s scientific and operative legacy encompasses groundbreaking contributions that redefined modern spinal kinematics, upper cervical stability, pediatric spinal deformity, and fracture traumatology. His work was characterized by the seamless integration of innovative dynamic radiological imaging, rigorous cadaveric biomechanical testing, and meticulously documented longitudinal clinical outcomes.

Hallmark Anatomical, Diagnostic and Operative Contributions

• The Fielding-Hawkins Classification of Atlanto-Axial Rotatory Fixation (1977): Formulated the definitive four-part classification of rotatory subluxation and fixation of the atlantoaxial joint based on the anatomical center of rotation and magnitude of anterior displacement, establishing clear therapeutic guidelines ranging from closed traction to posterior C1–C2 arthrodesis.
• Biomechanics and Failure Dynamics of the Transverse Atlantal Ligament (1974): Experimentally quantified the tensile strength and failure threshold (~84 kp / 820–840 N) of the human transverse atlantal ligament, defining the critical anterior atlanto-dens interval (ADI) thresholds (≤ 3 mm in normal adults, ≤ 4–5 mm in children, 3–5 mm for isolated transverse ligament disruption, and > 5 mm for secondary alar ligament failure).
• Cineroentgenography of the Normal and Abnormal Cervical Spine (1957): Pioneered the clinical application of dynamic motion-picture X-ray fluorography (30 frames/second) to capture in vivo cervical kinematics, establishing normal segmental motion cascades, coupling of rotation and lateral tilt, and instantaneous centers of rotation.
• The Fielding Classification of Subtrochanteric Femoral Fractures (1966, 1973): Established a classic anatomical and mechanical classification dividing subtrochanteric fractures into Types 1, 2, and 3 based on relationship to the lesser trochanter, elucidating deforming muscular forces and demonstrating why traditional nail-plates failed in distal fractures.
• Pathomechanics and Acquired Etiology of Os Odontoideum (1980): Definitively demonstrated that os odontoideum represents an acquired post-traumatic nonunion resulting from unrecognized childhood odontoid trauma and vascular compromise, disproving the prevailing dogma that it was purely a congenital failure of fusion of the apical odontoid anlage.
• Upper Cervical Reconstruction and Fusion Protocols: Established standardized operative indications and biomechanical principles for posterior atlantoaxial and occipitocervical arthrodesis (modifying the Gallie and Brooks-Jenkins techniques) in trauma, Down syndrome (Trisomy 21) hypermobility, Klippel-Feil syndrome, and rheumatoid arthritis.

Cineroentgenography and Dynamic In Vivo Cervical Kinematics

Prior to Fielding’s investigations, knowledge of cervical spine motion was derived almost entirely from static end-range radiographs or dissected cadaveric specimens devoid of dynamic muscle tone. In 1957, Fielding published his classic monograph, Cineroentgenography of the Normal Cervical Spine, in The Journal of Bone and Joint Surgery. Utilizing high-speed dynamic X-ray cinematography operating at thirty frames per second, Fielding recorded and analyzed living subjects performing active cervical flexion, extension, lateral bending, and axial rotation.

Fielding’s motion analysis revealed foundational principles of craniocervical and subaxial kinesiology. He demonstrated that approximately 50% of total cervical axial rotation occurs exclusively at the atlantoaxial (C1–C2) articulation, providing approximately 45 degrees of rotation to each side. During this rotation, the ring of the atlas pivots around the central peg of the dens. Because the superior articular facets of the axis are convex anteroposteriorly and slope downward laterally, the lateral mass of C1 sliding forward also descends, producing a coupled vertical “telescoping” or descending motion that relaxes the surrounding capsular ligaments to accommodate extreme rotation.

At the atlanto-occipital (C0–C1) joint, Fielding documented that motion is predominantly flexion and extension (“nodding”), contributing approximately 15 to 20 degrees of sagittal arc, with virtually no axial rotation permitted by the deep cup-shaped articular facets. In the lower subaxial spine (C2–C7), he demonstrated that flexion-extension proceeds in a synchronized, fluid segmental cascade with instantaneous centers of rotation located in the anterior-superior aspect of each underlying vertebral body. Furthermore, he proved that lateral bending in the subaxial spine is invariably coupled with obligatory axial rotation due to the 45-degree coronal and sagittal orientation of the subaxial zygapophyseal facets. Fielding’s kinematic baseline transformed spine radiology, providing the objective framework against which post-traumatic cervical instability, whiplash acceleration-deceleration sprains, and spondylotic stiffness could be evaluated.

Biomechanics of the Transverse Atlantal Ligament and the Anterior Atlanto-Dens Interval (ADI)

In 1974, Fielding, together with Van B. Cochran, J. Fred Lawsing III, and Mason Hohl, published a monumental clinical and biomechanical investigation in The Journal of Bone and Joint Surgery entitled Tears of the Transverse Ligament of the Atlas. The study addressed a critical diagnostic dilemma: how to evaluate and manage acute rupture of the primary stabilizer of the atlantoaxial joint.

The transverse atlantal ligament (TAL) is a dense, inextensible fibrous band that arches across the posterior aspect of the odontoid process, inserting into small osseous tubercles on the medial margins of the lateral masses of the atlas. Through calibrated mechanical testing of fresh human cadaveric C1–C2 complexes, Fielding and colleagues loaded the transverse ligament to ultimate failure by applying direct anterior translatory displacement of the atlas relative to the axis. They discovered that the transverse atlantal ligament fails at a mean load of 84 kiloponds (kp) (approximately 824 Newtons; range 40 to 180 kp). Failure occurred via two distinct modes: midsubstance rupture of the ligament fibers in approximately 70% of specimens, and osseous avulsion of the insertion tubercle from the lateral mass of C1 in approximately 30% (later classified by Dickman as Type I and Type II injuries, respectively).

Crucially, Fielding correlated these mechanical disruptions with precise measurements of the anterior atlanto-dens interval (ADI)—the distance between the posterior cortex of the anterior ring of C1 and the anterior cortex of the odontoid process on a true lateral radiograph:

• Normal Physiological ADI: In healthy adults, the ADI measures ≤ 3 mm and remains constant during flexion and extension. In children, due to greater ligamentous elasticity and the presence of unossified radiolucent odontoid cartilage, an ADI of up to 4 to 5 mm is physiological.
• Isolated Transverse Ligament Rupture (ADI 3 to 5 mm): Complete division or rupture of the transverse atlantal ligament alone permits the atlas to displace anteriorly by 3 to 5 mm. Further anterior translation is halted by the intact secondary check ligaments: the paired alar ligaments and the apical dental ligament.
• Gross Instability and Secondary Restraint Failure (ADI > 5 mm): When the ADI exceeds 5 mm on lateral radiographs, it confirms that not only the transverse atlantal ligament has ruptured, but the secondary alar ligaments and capsular constraints have sustained catastrophic plastic elongation or complete rupture. In this state, the upper cervical spine is grossly unstable.
• Cord Compression and the Space of Steele (ADI > 10 to 12 mm): Applying Steel’s Rule of Thirds, the total anterior-posterior diameter of the atlas ring is approximately 30 mm (one-third odontoid [10 mm], one-third spinal cord [10 mm], and one-third physiological buffer reserve [10 mm]). When the ADI exceeds 10 to 12 mm, this safety buffer is completely exhausted, driving the odontoid into direct compression against the anterior cervical spinal cord, risking instant quadriparesis or fatal respiratory center transection.

Fielding emphasized a vital clinical principle: because the midsubstance transverse atlantal ligament is a hypovascular, dense fibrous structure, acute midsubstance ruptures possess virtually zero potential for biological healing through external immobilization alone. Attempting conservative management with a halo vest for an intrasubstance TAL rupture uniformly results in chronic atlantoaxial nonunion and persistent instability. Therefore, acute rupture of the transverse ligament with an ADI > 5 mm represents an absolute indication for operative stabilization via posterior C1–C2 arthrodesis.

The Fielding and Hawkins Classification of Atlanto-Axial Rotatory Fixation

In 1977, J. William Fielding and Richard J. Hawkins published their landmark paper, Atlanto-Axial Rotatory Fixation (Fixed Rotatory Subluxation of the Atlanto-Axial Joint), in The Journal of Bone and Joint Surgery. This work brought clarity to a confusing spectrum of disorders presenting with torticollis, head tilt, and painful cervical rotation.

Fielding and Hawkins recognized that while transient rotatory subluxation is common in children following minor trauma, pharyngitis, upper respiratory infections, or retropharyngeal inflammation (Grisel’s syndrome), a distinct subset develops true “rotatory fixation.” In rotatory fixation, the atlas facets remain locked in an abnormal rotational position relative to the axis facets even when the patient attempts active or passive correction, maintaining the classic “cock-robin” posture (the chin rotated to one side and the occiput tilted to the opposite side, accompanied by compensatory sternocleidomastoid spasm on the side opposite the facial rotation). Based on plain radiographs, open-mouth odontoid views, dynamic motion studies, and subsequent CT imaging, Fielding and Hawkins classified atlantoaxial rotatory fixation into four distinct structural categories:

Fielding underscored that the chronicity of fixation is the primary determinant of reducibility. Cases recognized within the first month almost always reduce with non-invasive halter traction and immobilization. Beyond one month, contracted periarticular soft tissues and remodeling of the biconvex articular cartilage create a rigid block, requiring prolonged skeletal traction. If fixation persists beyond three months, closed reduction is rarely achievable, and recurrent subluxation is common upon brace removal, establishing an indication for surgical open or closed reduction and posterior C1–C2 fusion.

The Fielding Classification of Subtrochanteric Femoral Fractures

In addition to his pioneering spine research, Fielding made seminal contributions to musculoskeletal traumatology. In 1966, alongside Gordon Magliato, and expanded in a definitive 1973 solo monograph in Clinical Orthopaedics and Related Research, Fielding analyzed the punishing pathoanatomy of subtrochanteric fractures of the femur. The subtrochanteric corridor—defined as the region extending from the inferior border of the lesser trochanter distally for 5 centimeters into the proximal femoral shaft—represents the highest mechanical stress concentration zone in the entire human skeleton. Medial cortical compressive stresses exceed 1,200 pounds per square inch, while the lateral cortex endures immense tensile distracting stresses during normal physiological weight-bearing.

Fielding recognized that subtrochanteric fractures are subject to massive deforming muscular forces that actively displace the fragments. The proximal fragment is pulled into flexion by the iliopsoas tendon inserting onto the lesser trochanter, marked abduction by the gluteus medius and minimus inserting onto the greater trochanter, and external rotation by the short external rotators (piriformis, obturator internus and externus, gemelli, and quadratus femoris). Simultaneously, the distal shaft fragment is pulled proximally (shortening) and medially (adduction) by the powerful adductor muscle group (adductor magnus, longus, and brevis) and the hamstrings. This results in the characteristic clinical and radiographic deformity: a proximal fragment flexed, abducted, and externally rotated, with a distal shaft adducted and collapsed in severe varus.

Fielding established an anatomical and biomechanical classification based on the location of the primary fracture line relative to the lesser trochanter:

• Fielding Type 1: The primary fracture line occurs at the level of the lesser trochanter (the junction of the trochanteric mass and femoral shaft).
• Fielding Type 2: The fracture line is located within 1 inch (approximately 2.5 cm) below the inferior border of the lesser trochanter.
• Fielding Type 3: The fracture line is located between 1 and 2 inches (approximately 2.5 to 5.0 cm) below the inferior border of the lesser trochanter, traversing the transition into the narrow femoral isthmus.

Fielding demonstrated that mechanical failure rates correlated directly with the distal descent of the fracture. In Type 1 fractures, traditional nail-plates achieved acceptable fixation because the proximal fragment was large enough to accommodate multiple fixation screws, and the lever arm across the fracture was relatively short. However, in Type 2 and Type 3 fractures, the mechanical lever arm acting on lateral implants increased exponentially. Contemporary fixed-angle nail-plates (such as Jewett plates or early angled blade-plates) suffered catastrophic hardware failure rates exceeding 25% to 30%, with screws pulling out, plates snapping across screw holes, or nails cutting through the osteoporotic femoral head. Fielding’s clinical insights revolutionized traumatology by proving that successful fixation required reconstructing the medial compressive buttress, preserving the periosteal biology of the medial cortex, and transitioning toward biomechanically superior, load-sharing intramedullary devices—laying the foundation for modern cephalomedullary reconstruction nails.

Upper Cervical Instability Syndromes: Os Odontoideum, Down Syndrome, and Operative Arthrodesis

Throughout his tenure at St. Luke’s and Columbia University, Fielding investigated upper cervical instability syndromes in pediatric and adult populations. In a definitive 1980 clinical investigation, Fielding, Robert N. Hensinger, and colleagues resolved the century-old controversy surrounding os odontoideum—an independent ossicle separated from the hypoplastic base of the axis by a wide radiolucent gap. Historically considered a congenital anomaly resulting from failure of fusion of the apical dental anlage, Fielding demonstrated through longitudinal clinical records and post-traumatic radiographs that os odontoideum is primarily an acquired condition. He proved that an unrecognized, undisplaced fracture through the cartilaginous neurocentral synchondrosis of the axis in children under five years of age compromises the delicate ascending vascular supply of the dens, leading to ischemic necrosis, resorption of the base, and subsequent pseudarthrosis, producing a mobile, corticated ossicle prone to catastrophic late instability.

Fielding also established screening and surgical protocols for atlantoaxial hypermobility in Down syndrome (Trisomy 21). Recognizing that generalized collagenous ligamentous laxity causes atlantoaxial instability in 15% to 20% of Down syndrome individuals, Fielding formulated radiographic evaluation protocols using lateral flexion-extension views. He established that an ADI > 4.5 mm warrants rigorous sports activity restrictions (excluding diving, gymnastics, and contact sports), while neurological symptoms or progressive subluxation demand surgical stabilization.

Operatively, Fielding refined techniques of posterior atlantoaxial arthrodesis. He analyzed the biomechanics of the Gallie wire-graft construct and the Brooks-Jenkins wedge compression arthrodesis, demonstrating that stable fusion requires rigid decortication of the posterior C1 arch and C2 lamina, meticulous bone grafting using dense autologous corticocancellous iliac crest, and absolute avoidance of over-tightening sublaminar wires, which risks displacing the C1 ring anteriorly or compromising the spinal cord and vertebral arteries.

4. Master Class Pro-Tip

The successful management of craniocervical junction instability and proximal femoral fractures demands absolute mastery of functional anatomy, dynamic radiographic interpretation, and biological biomechanics.

When evaluating a child presenting with torticollis and the classic “cock-robin” posture (chin rotated to one side and neck tilted to the opposite side with contralateral sternocleidomastoid spasm), never assume benign muscular wryneck until atlantoaxial rotatory fixation (AARF) is rigorously ruled out. Obtain dynamic cervical computed tomography (CT) in maximal head rotation to the right and left. In true Fielding-Hawkins rotatory fixation, the atlas and axis remain locked in a fixed rotational relationship regardless of head turn. Scrupulously measure the anterior atlanto-dens interval (ADI) on lateral imaging: an ADI of 3 mm or less with an intact transverse ligament (Type I) can be managed with cervical halter traction, muscle relaxants, and soft collar immobilization if recognized within the first month. However, if the ADI measures 3 to 5 mm (Type II), exceeds 5 mm (Type III), or demonstrates posterior displacement (Type IV), the transverse and alar ligaments are ruptured or incompetent. These advanced configurations represent severe spinal cord hazards that cannot heal with closed immobilization alone; initiate prompt skull traction under close neurological monitoring and proceed to definitive posterior C1–C2 arthrodesis.

In the traumatology suite, treat subtrochanteric femoral fractures with immense biomechanical respect. Remember that the subtrochanteric region endures the highest compressive stresses (up to 1,200 lb/sq inch medially) and tensile distractile forces laterally in the human body. Deforming forces are formidable: the proximal fragment is pulled into uncontrolled flexion by the iliopsoas, abduction by the abductors, and external rotation by the short rotators, while the distal shaft is pulled proximally and medially into varus. Avoid relying on simple non-load-sharing lateral plates that span distal fractures (Fielding Type 2 and Type 3), which invite fatigue failure and plate breakage. Choose a robust, cephalomedullary reconstruction nail or fixed-angle blade-plate construct, achieve anatomical reduction of the medial compressive cortical buttress, and scrupulously preserve the medial soft-tissue and periosteal vascularity to prevent disastrous varus collapse and nonunion.

Master Class Surgical Pearl: Upper Cervical Instability, Atlantoaxial Rotatory Fixation & Subtrochanteric Fracture Management

5. Primary Landmark Publications & Bibliography

The foundational contributions of Joseph William Fielding are preserved in these original landmark monographs and peer-reviewed surgical literature:

• Fielding JW, Hawkins RJ. Atlanto-axial rotatory fixation. (Fixed rotatory subluxation of the atlanto-axial joint). J Bone Joint Surg Am. 1977;59(1):37–44. [DOI]
• Fielding JW, Cochran GVB, Lawsing JF 3rd, Hohl M. Tears of the transverse ligament of the atlas. A clinical and biomechanical study. J Bone Joint Surg Am. 1974;56(8):1683–1691. [DOI]
• Fielding JW. Subtrochanteric fractures. Clin Orthop Relat Res. 1973;92:80–99. [DOI]
• Fielding JW. Cineroentgenography of the normal cervical spine. J Bone Joint Surg Am. 1957;39-A(6):1280–1288. [DOI]
• In Memoriam. J. WILLIAM FIELDING, M.D., F.R.C.S.(C) 1923–1998. J Bone Joint Surg Am. 1998;80(6):930–931. [DOI]
• Fielding JW, Hensinger RN, Hawkins RJ. Os odontoideum: an acquired lesion. J Bone Joint Surg Am. 1980;62(3):376–383. [PubMed]
• Fielding JW, Magliato HJ. Subtrochanteric fractures. Surg Gynecol Obstet. 1966;122(3):555–560. [PubMed]
• Mostofi SB, ed. Who’s Who in Orthopedics. London: Springer-Verlag; 2005:104.

6. Biographical Provenance & Acknowledgments

This historical biography was synthesized for the OrthopaedicsOne Knowledge Network as part of A Who’s Who of Orthopaedics, adapted and expanded from the foundational biographical directory Who’s Who in Orthopedics (Springer-Verlag London) edited by Seyed B. Mostofi, BSc, MBBS, FRCS (Ed) (page 104).