Histologic findings of anterior cruciate ligament reconstruction with Achilles allograft.

The purpose of the current study was to evaluate the remodeling process of Achilles allograft for anterior cruciate ligament reconstruction under light microscopic and electron microscopic evaluations. In 12 patients, histologic examinations were done preoperatively and during arthroscopy at 6, 12, and 24 months. Gross observations were made with respect to width, vascularity, elasticity, and stability of the Achilles allograft.

Extension block secondary to partial anterior cruciate ligament tear on the femoral attachment of the posterolateral bundle.

Purpose: The purpose of this investigation was to prove that a partial tear of the anterior cruciate ligament (ACL) at the femoral attachment of the posterolateral bundle can result in mechanical knee locking and trigger the injury mechanism of an isolated ACL injury.

Type Of Study: Case series.

Methods: From February 1993 through June 1999, 19 cases of knee locking with observation of a torn ACL, confirmed under arthroscopy, were investigated.