Reconstruction for Medial Instability of the Knee

TECHNIQUE AND RESULTS IN SIXTY CASES

¹ From the Department of Orthopaedic Surgery, St. Anthony's Hospital, University of Oklahoma, Medical Center, Oklahoma City

Sixty patients were treated for medial instability by advancement of the medial collateral ligament and posteromedial capsule as a single cuff, moving its tibial attachments both anteriorly and distally. Using a 0 to 4+ grading scale to quantitate medial instability, all patients had 2+ medial instability or more preoperatively while at follow-up thirty-six had 0, twenty-one, 1+; and three, 2+ in stability. Forty-five improved two grades or more. In only two of these sixty patients was disability not decreased after medial reconstruction. In twenty-six of the sixty knees, absence of the anterior cruciate was established at operation. Medial repair alone decreased anteroposterior instability (according to a five point grading system) one grade in fourteen knees, two grades in five, and three grades in one. No improvement occurred in four.

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