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Abductor Muscle Function and Trochanteric Tenderness After Hemiarthroplasty for Femoral Neck Fracture.

Abstract：

OBJECTIVES:To compare the abductor muscle function and trochanteric tenderness in patients operated with hemiarthroplasty using the direct lateral (DL) or posterolateral (PL) approach for displaced femoral neck fracture. DESIGN:Prospective cohort study. SETTING:A secondary teaching hospital. PARTICIPANTS:We enrolled 183 hips operated with hemiarthroplasty for displaced femoral neck fracture using the DL or PL approach. INTERVENTIONS:Preoperatively, we evaluated the Harris hip score (HHS) and European Quality of Life-5 Dimensions (EQ-5D). At 1 year postoperatively, lucid patients were clinically examined to evaluate the Trendelenburg sign, abductor muscle strength with a dynamometer, and trochanteric tenderness with an electronic algometer. The 1-year HHS and EQ-5D were documented. MAIN OUTCOME MEASURES:The primary outcome was the incidence of postoperative Trendelenburg sign, whereas the secondary outcomes included patients' reported limp, abductor muscle strength, trochanteric tenderness, HHS, and EQ-5D. RESULTS:There were 48 patients (24 in the DL group and 24 in the PL group) who attended the 1-year clinical follow-up. The 2 groups were comparable (P > 0.05). The DL group showed a higher incidence of the Trendelenburg sign (9/24 vs. 1/24, P = 0.02) and limp (12/24 vs. 2/24, P = 0.004). Further analysis with logistic regression showed the surgical approach to be the only factor that resulted in the increment. No differences regarding HHS, EQ-5D, abductor muscle strength, algometer pressure pain threshold, and radiologic measurements were found (P > 0.05). CONCLUSIONS:The incidence of the Trendelenburg sign and limp were significantly higher in the DL approach although this seemed not to influence abductor muscle strength or the incidence of trochanteric tenderness or compromise the clinical outcome. LEVEL OF EVIDENCE:Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

journal_name

J Orthop Trauma

journal_title

Journal of orthopaedic trauma

authors

Sayed-Noor AS,Hanas A,Sköldenberg OG,Mukka SS

doi

10.1097/BOT.0000000000000532

subject

Has Abstract

pub_date

2016-06-01 00:00:00

pages

e194-200

issue

eissn

0890-5339

issn

1531-2291

journal_volume

pub_type

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Abductor Muscle Function and Trochanteric Tenderness After Hemiarthroplasty for Femoral Neck Fracture.