[Expediency of closed plastic surgery of ligaments of the knee joint].

In most patients with long-standing injuries of ligaments of the knee joint there develops a deforming arthrosis. So, the operative techniques of recovering their stability must be at most sparing. The author thinks the use of "closed" methods of plasty of the ligaments to be expedient. He has elaborated two new methods of operations which were recognized as inventions. Operations were made on 47 patients with good results observed up to 3.5 years.