Journal
AMERICAN JOURNAL OF SPORTS MEDICINE
Volume 39, Issue 1, Pages 134-139Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0363546510381362
Keywords
medial patellofemoral ligament reconstruction (MPFL); graft positioning; femoral tunnel positioning; anatomy; patella
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Background: Several techniques have been described for reconstruction of the medial patellofemoral ligament (MPFL). The anatomical insertion of the MPFL has been defined; however, there are no reports describing the accuracy of femoral graft positioning assessed postoperatively. Purpose: To analyze our femoral tunnel positioning for MPFL reconstruction in correlation with our clinical results. Study Design: Case series; Level of evidence, 4. Methods: The authors reported a prospective series of 29 MPFL reconstructions with a minimum follow-up of 24 months. The tunnel positioning analysis was performed using plain radiographs and magnetic resonance imaging at 1-year follow-up. Results: Twenty-nine femoral tunnels were analyzed; 20 femoral tunnels (69%) were considered to be in good position on plain radiographs. On magnetic resonance imaging, the authors found 19 femoral tunnels (65%) in a proper location, 5 (17.5%) in a high position, and 5 in an anterior and/or high position. Conclusion: The study highlights the difficulty of reproducible MPFL reconstruction. The surgical procedure continues to be improved and finding a reliable technique to anatomically place the graft remains challenging. Verifying femoral tunnel placement radiographically may be recommended during surgery.
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