The impact of loading on deformation about posteromedial meniscal tears

Orthopedics. 2000 Jun;23(6):597-601. doi: 10.3928/0147-7447-20000601-22.

Abstract

To simulate the effects of partial weight bearing on meniscal repair, full-thickness tears were produced in the posteromedial aspect of seven ACL-intact cadaveric knees. Following suture repair, metal markers were imbedded to index the position of the tear. A radiolucent chamber was used to position and load each knee for computed tomography scanning at flexion angles of 0 degrees, 30 degrees, and 60 degrees with and without a load force of 100 lb. Sutures were removed and the tests repeated. Changes in marker distances were obtained for each test condition. Loading produced average dimensional changes of < or =0.5 +/-0.6 mm in either sutured or unsutured menisci. Based on the Friedman test, neither flexion angle, loading, nor suture exerted a significant impact (P> or =.52). These data support clinical accelerated rehabilitation programs previously published. Therefore, partial weight bearing during convalescence is tenable.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Arthroscopy
  • Biomechanical Phenomena
  • Cadaver
  • Humans
  • Joint Diseases / physiopathology
  • Joint Diseases / rehabilitation
  • Knee Joint / physiology
  • Menisci, Tibial / physiology
  • Menisci, Tibial / surgery*
  • Postoperative Care*
  • Rehabilitation
  • Sutures
  • Tibial Meniscus Injuries