|
Year |
2001 |
|---|---|
|
Question Number |
254. |
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Category |
Select |
Question
What patient related risk factor is associated with an increased risk of dislocation in total hip arthroplasty?
a. Obesity
b. Smoking
c. Alcohol intake
d. Male gender
e. Use of systemic steroids
Figures
Answer (click for answer)
Answer: C
Dislocation occurs after 1-10% of THA’s. Most dislocations occur in the first month after surgery. Less than 1% of patients first dislocate their hip 5 yrs after the initial procedure. The posterior approach had a higher dislocation rate prior to the routine of repairing the capsule. Regardless of the approach, there is a higher dislocation risk in patients with RA, and nonhealed hip fractures. In addition, 50 %( 10 out of 20) of male patients with dislocations had a history of alcohol abuse in a study involving 3,199 Charnley THA. Obesity does not place the patient at higher risk of dislocation.
Reference: Beaty JH (ed) OKU 6. Rosemont, IL, AAOS, 1999, pp 474.