Outcomes after conventional versus computer-navigated anterior cruciate ligament reconstruction.

Purpose: The purpose of this prospective randomized study was to assess biomechanical, radiographic, and functional results after single-bundle anterior cruciate ligament (ACL) reconstruction by use of a navigation system.

Methods: ACL reconstruction was performed by use of the OrthoPilot navigation system (B. Braun-Aesculap, Tuttlingen, Germany) in 40 patients (group 1); and in another 40 patients, surgery was done by the standard manual targeting technique (group 2).

Intraoperative navigation in hip surface arthroplasty: a radiographic comparative analysis study.

Background: The goal of the current prospective randomised radiological study was to determine the accuracy of conventional and computer-assisted femoral component implantation in surface arthroplasty (SRA).

Methods: We analysed on standard radiographs the femoral component positions after 30 conventional instrumented (Group 1) and 30 navigated (Group 2) SRA femoral components. We evaluated: varus or valgus orientation, horizontal femoral offset and translation of the component.