Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association
-
Comparative Study
Comparison of screw post fixation and free bone block interference fixation for anterior cruciate ligament soft tissue grafts: biomechanical considerations.
Endoscopic (single-incision) anterior cruciate ligament (ACL) reconstruction with bone patellar tendon bone can usually be secured with interference screws on the femur and tibia. Infrequently, patella alta, which results in a longer tendinous component of the graft construct, can result in construct mismatch, resulting in a large portion of the tibial bone plug extruding from the tibial tunnel, requiring graft fixation with staples or a suture/screw and post technique. This study investigated the hypothesis that initial graft fixation could be enhanced if the bone plug was removed and press fit into the tibial tunnel and then secured with an interference screw in the scenario of graft construct mismatch. ⋯ Group 1 stiffness was 90 N/mm (range, 50 to 122 N/m) compared with a mean stiffness of 24 N/m (range, 16 to 33 N/m) for group 2 knees. In our bovine model, free bone block interference fixation was stronger and stiffer than fixation using sutures tied over a post. This fixation method of securing a soft tissue graft with an interference screw warrants further clinical investigation and may offer an improvement to the alternative of suture/post fixation.
-
The localized form of tenosynovial giant-cell tumor is rarely located intraarticularly, especially in the large weight-bearing joints. We report the first case of localized, intraarticular tenosynovial giant-cell tumor arising from the anterior cruciate ligament of a knee in which locking and effusion had occurred. After arthroscopic removal of this tumor, the patient became asymptomatic.
-
Comparative Study
Local anesthesia in outpatient knee arthroscopy: a comparison of efficacy and cost.
This study was performed to compare the efficacy, cost-effectiveness, and safety of general, regional, and local anesthesia when performing outpatient knee arthroscopy. The study consisted of two portions. A retrospective review of 256 outpatient knee arthroscopies was performed. ⋯ The patient questionnaire showed nearly universal acceptance and satisfaction with the use of local anesthesia. The use of local anesthesia for outpatient knee arthroscopy is safe, effective, and well accepted. The use of local anesthesia was shown to save a minimum of $400 per case compared with the other anesthetic methods studied.