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General Orthopaedics

OUTCOMES OF BIPOLAR HEMIARTHROPLASTY IN DYSPLASTIC HIP: A RETROSPECTIVE COMPARATIVE STUDY

The International Society for Technology in Arthroplasty (ISTA), 27th Annual Congress. PART 3.



Abstract

Background

BHA is popular surgery for femoral neck fractures expecially elderly patients. However, clinical results are variable that factors affecting results are questionable. Therefore we investigated radiologic fators, dysplastic hip whether influences results of BHA.

Methods

Between 2004 and 2009, 200 patients undergoing bipolar hemiarthroplasty for femoral neck fracture were divided two groups; a lateral center edge (LCE) angle of < 16 degree or > 16 degree on anteroposterior radiographs. All surgical procedures were performed by a single surgeon. Dermogrpahic data, the harris hip score, WOMAC index, Koval activity level, and complication were recorded. The minimum follow up interval was 4 years (mean, 7.8 years).

Result

Late postoperative complications such as periprosthetic joint infection, acetabular erosion, and subluxation of bioplar head were commonly observed in a group <16 degree of center edge angle. Clinical score was significantly lower in dysplastic group. Revision rate was higher in dysplastic group compared with group LCE angle of above the 16 degree.

Conclusion

These results suggest that the dysplastic nature might be affected result of bipolar hemiarthroplasty in femroal neck fracture especially elderly patients.


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