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KMID : 0386720010130030295
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Journal of the Korean Hip Society
2001 Volume.13 No. 3 p.295 ~ p.303
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Revision Total Hip Arthroplasty Using Frozen Head Allograft in Acetabular Bone Deficiency
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Shim Jae-Ik
Kim Taik-Sun
Lee Sung-Jong
Lee Suk-Ha
Kim Young-Bae
Yoon Jung-Ro
Kang Shin-Pyo
Yoo Jeong-Su
Kang Dae-Woong
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Abstract
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Purpose: In acetabular bone deficiencies encountered during revision hip arthroplasties, stable fixation of the acetabular cup and restoration of the normal hip anatomy and of the leg length shold be considered. We evaluated the clinical and radiological results of revision total hip arthroplasty using frozen femoral head allograft in acetbaular bone deficiency.
Materials and Methods: From January 1990 to December 1997 the authors performed 38 revision total hip arthroplasties using deep frozen femoral head allografts and cemented cups. This study evaluates the clinical and radiological results, at a meaan follow-up of 50 months. We evaluated the Harris hip scre clinically, the duration of bony union radiologically and the displacement of acetabular cup by Yoder’s criteria.
Results: After surgery, there were no remarkable clinical symtpoms or hematologic findings suggestive of deep infectin and immunological reactions. The mean Harris hip score was improved from a preoperative 58 points to 81 points at the last follow-up. Radiological union at the allograft host bone function was achieved in all of the patients in a mean duration of 11 months after surgery, remodeling was achieved in 24 cases in a mean duration of 21 months after surgery and reorientation of the bone tabeculae was achieved in 15 cases in a mean duration of 33 months after surgery(Ed-this last clause is self evident from your M&M section and hence can be deleted). Greater than 4 degrees tilting of the acetabular cup was experienced in 4 cases, and 7 ㎜ superior migration due to allograft resorption in 1 case.
Conclusion: Although the early results of deep frozen femoral head allograft reconstruction for acetabular bone deficiency during revision total hip arthroplasty have been encouraging to date, a more long term follow-up study comprising a larger subject group size is necessary.
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KEYWORD
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Acetabular bone deficiency, Revisiontotal hip arthroplasty, Frozen femoral head allograft
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