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KMID : 0386720090210040327
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Journal of the Korean Hip Society
2009 Volume.21 No. 4 p.327 ~ p.333
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The Relationship between Limb-Length Discrepancy on Function, Dislocation, Pain and Acetabular Wear after Bipolar Hemiarthroplasty for Femoral Neck Fracture
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Yoon Hyung-Ku
Jung Joo-Hwan
Han Seung-Chul
Kim Byoung-Kook
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Abstract
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Purpose: To evaluate the relationship between a limb-length discrepancy and the clinical and radiological outcomes after bipolar hemiarthroplasty for femur neck fractures in elderly patients.
Materials and Methods : Between August 2004 and January 2007, 60 out of 80 cases over 65 years who underwent cemented bipolar hemiarthroplasty for femur neck fractures with a more than 2 years follow-up were evaluated retrospectively by dividing the patients into two groups, > 5 mm (group 1) and < 5 mm (group 2) of limblengthening. Harris hip score, the activity of daily living(ADL), dislocation rate, pain by a visual analogue scale (VAS) and acetabular wear by radiographic measurements were analyzed.
Results: For each group, the Harris hip score in group 1 and 2 was 80.0 and 76.2, respectively. The ADL in group 1 and 2 was respectively, 36 and 29 preoperatively, 56 and 52 postoperatively. The visual analogue scale in group 1 and 2 was 3.53 and 2.23 (P=0.002), respectively, and acetabular wear was encountered in 6 and 8 cases in group 1 and 2, respectively. The VAS score was significant. There was no difference in acetabular wear and dislocation between the two groups (P>0.05).
Conclusion: Limb-lengthening by hemiarthroplasty may be a cause of pain but with little effect on the overall functional outcome.
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KEYWORD
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Femoral neck fracture, Bipolar hemiarthroplasty, Limb-length discrepancy
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