10-YEAR PROGNOSIS OF ISOLATED AND COMBINED MEDIAL COLLATERAL LIGAMENTRUPTURES - A MATCHED COMPARISON IN 40 PATIENTS USING CLINICAL AND RADIOGRAPHIC EVALUATIONS

In a matched-pair study of 40 patients, the prognoses of patients with acute isolated partial medial collateral ligament injuries and acute combined medial collateral and anterior cruciate ligament injuries wer e compared 10 years after initial treatment. All patients in the first group were treated nonoperatively. In the latter group, most medial c ollateral ligament injuries were total ruptures, which were thoroughly repaired; the torn anterior cruciate ligament was repaired with augme ntation in half of the cases. At the follow-up evaluation, both patien t groups had similarly high knee functions according to the Lysholm sc ore and similar activity levels (recreational team sports). Knees with combined injuries had increased sagittal laxity at manual and instrum ented assessment. Radiographic signs of knee osteoarthritis were prese nt in half of the knees with combined injuries, but they were absent i n knees with isolated injuries. The long-term functional prognosis was similarly good after isolated or combined medial collateral ligament injuries, but patients with combined ruptures had more reinjuries and repeat surgeries, increased sagittal laxity, and a higher incidence of radiographic osteoarthritis.