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Abstract Presented at the 26th Annual Meeting of the Arthroscopy Association of North America| Volume 23, ISSUE 6, SUPPLEMENT , e11, June 2007

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Outcomes Following Hip Arthroscopy With Microfracture (SS-21)

      Summary

      The purpose of this study was to document 1 year outcomes in patients who underwent hip arthroscopy with microfracture. Microfracture technique to treat full thickness chondral defects in the hip can increase level of function, result in high patient satisfaction, and reduce symptoms as shown by the Harris Hip Score, non-arthritic hip score, and the hip outcome sports scale. Younger patients had better outcomes according to the non-arthritic hip score and showed a significant change in level of function.

      Purpose

      Indications for microfracture in the hip include full-thickness loss of articular cartilage in the weight-bearing region between the femur and acetabulum. The purpose of this study was to document 1 year outcomes in patients who underwent hip arthroscopy with microfracture.

      Methods

      Between 3/2005 and 6/2005, 19 hips underwent hip arthroscopy with microfracture. Average age at time of surgery was 47 years (range: 20-73).
      Surgical data and patient completed questionnaires were collected. The hip outcome score (HOS) sports scale, Harris Hip Score, and non-arthritic hip score were used to compare symptoms and level of function. Patient satisfaction was obtained (1= unsatisfied ; 10=satisfied).

      Results

      Average pre-operative non-arthritic hip score was 64 (range: 14-81) and 77 post-operative (range: 53-95; p=0.010). The average pre-operative Harris Hip Score for all patients was 58 (range: 18-77) and post operatively 74 (range: 31-96; p=0.03). The average pre-operative HOS sports score was 44 (range: 3-61) and 62 post-operative (range: 0-91; p=0.039). Eleven patients had microfracture solely on the acetabulum, 6 only the femoral head, and 2 patients had microfracture on both acetabulum and femoral head. Patients with microfracture on the femoral head showed better improvement in the Harris Hip Score (22 points) when compared to patients who underwent acetabular microfracture (11 points). Patient satisfaction was 8.6 out of 10 (range: 2-10). In patients less than 40 years old, the non-arthritic hip score was higher (86) than those patients 40 years or greater (72) (p=0.038).

      Conclusions

      Microfracture technique to treat full thickness chondral defects in the hip can increase level of function, result in high patient satisfaction, and reduce symptoms as shown by the Harris Hip Score, non-arthritic hip score, and the hip outcome sports scale. Younger patients had better outcomes according to the non-arthritic hip score and showed a significant change in level of function.