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Year : 1994  |  Volume : 28  |  Issue : 3  |  Page : 12-17

Hemiarthroplasty Of Hip With Unipolar And Bipolar Femoral Head Prosthesis : A Prospective And Retrospective Evaluation



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A. K Gupta


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This study represents the authors' experience with Moore and Bipolar prostheses in 42 patients with displaced fracture neck femur. Thirty four patients with 35 hemiarthroplasties were available for follow up for more than one year. The average follow up was 2 years (range 1 to 8 years). Various pre-operative factors like hone quality, pre-operative delay, and secondary bony changes were evaluated in both groups. The mean hip scores of Bipolar and Moore prosthesis groups were correlated with various pre-operative factors, type of prosthesis, duration of follow-up and the post-operative complications. Out of 28 Moore prosthetic replacements, 23 had good to excellent results (excellent 15; good 8) in initial 3 months, which was reduced to 17 in 8 months and to 12 at the final follow up. In Bipolar hemiarfhroplasty 11 out of 12 cases had good to excellent score in initial 3 months, which was reduced to 10 and 9 at 6 months and 2 years respectively. Further follow up shows no more deterioration of the result in bipolar groups. The patients with minimal pre-operative delay (<10 days) had fewer complications than those with more delay. Moore group had greater incidence of complications which include infection, wound griping and hematoma in early postoperative period and stern loosening (21%), acetabular erosion (12.5%) and painful hip (58%) later. Bipolar group had few immediate complications and there was no evidence of stem loosening or acetabular erosion.


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