Abstract
We presented the follow-up results of 19 patients with unrepaired rupture of the posterior cruciate ligament. It showed that the function of the knee was dependent on the degree of posterior instability, occupation and athletic activity in large.Satisfactory results was obtained conservatively in less than 5mm posterior instability in all the patients, while muscular labors and athletes showed unsatisfactory results if the instability was 5 to 9mm. And none was satisfactory in more than 10mm, in which surgical repair, we think, is mandantory.
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