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Decreased stride length
53%
475/901
Lower extremity external rotation
30%
274/901
Hip flexion contracture
8%
70/901
Lower extremity Internal rotation
74/901
Dorsiflexion weakness
0%
4/901
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Femoral stems often subside in retroversion which places the affected extremity in external rotation. Aseptic loosening of the femoral stem can manifest as thigh pain and reduced function. Patients often characterize their pain as exacerbated during the initiation of activities, but improves with continued activities. Loose femoral stems often subside into retroversion due to proximal femoral biomechanics. A compensatory extremity external rotation deformity develops. Feyen and Shimmin reviewed the importance of femoral component length in primary total hip arthroplasty. They stated that shortened femoral stems do come with a possible compromise in initial implant stability. However, current short-term data is promising. Duffy et al. instructed on the evaluation of the painful total hip arthroplasty. They emphasized a structured approach centered around a thorough history and physical examination. They recommended investigative studies to follow to confirm suspected diagnoses and expedite treatment plans. Incorrect answers Answers 1, 3, 4, and 5: Femoral stem subsidence often settles with the stem in retroversion. This manifests with the affected extremity in external rotation.
1.9
(16)
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