Advanced Reinforcement System Artificial Ligament Research Articles

Comparison of the therapeutic effects between ligament advanced reinforcement system artificial ligament and four-strand hamstring tendon autograft in patients with acute anterior cruciate ligament injury.

Comparison of the therapeutic effects between ligament advanced reinforcement system artificial ligament and four-strand hamstring tendon autograft in patients with acute anterior cruciate ligament injury.

Arthroscopic anatomical reconstruction of lateral collateral ligaments with ligament advanced reinforcement system artificial ligament for chronic ankle instability.

BACKGROUNDRecently, the use of ligament advanced reinforcement system (LARS) artificial ligament, a new graft which has several unique advantages such as no donor-site morbidity, early recovery and no risk of disease transmission which has been a significant breakthrough for anatomical ligament reconstruction. Growing studies suggested that the special design of the LARS ligament with open fibers in its intra-articular part was believed to be more resistant to torsional fatigue and wearing. However, the safety and efficacy of LARS artificial ligament for ankle joint lateral collateral ankle ligament reconstruction has not been defined to date.AIMTo evaluate the clinical results of all-arthroscopic anatomical reconstruction of ankle joint lateral collateral ligaments with the LARS artificial ligament for chronic ankle instability.METHODSTwenty-two patients with chronic lateral instability underwent anatomical reconstruction of the lateral collateral ligaments of ankle with LARS artificial ligament. The visual analogue score (VAS), American Orthopaedic Foot and Ankle Society score (AOFAS score) and Karlsson score were used to evaluate the clinical results before and after surgery.RESULTSA total of 22 patients (22 ankles) were followed up for a mean of 12 mo. All patients reported significant improvement compared to their preoperative status. The mean AOFAS score improved from 42.3 ± 4.9 preoperatively to 90.4 ± 6.7 postoperatively. The mean Karlsson score improved from 38.5 ± 3.2 preoperatively to 90.1 ± 7.8 postoperatively. The mean VAS score improved from 1.9 ± 2.5 preoperatively to 0.8 ± 1.7 postoperatively.CONCLUSIONAll-arthroscopic anatomical reconstruction of the lateral collateral ligaments with LARS artificial ligament achieved a satisfactory surgical outcome for chronic ankle instability.

Do Large-Diameter Hamstring Grafts in Young Patients Prevent Knee Osteoarthritis After ACL Reconstruction?

Do Large-Diameter Hamstring Grafts in Young Patients Prevent Knee Osteoarthritis After ACL Reconstruction?

Biologic Failure of a Ligament Advanced Reinforcement System Artificial Ligament in Anterior Cruciate Ligament Reconstruction: A Report of Serious Knee Synovitis

A ligament advanced reinforcement system (LARS) artificial ligament has been proposed for use in anterior cruciate ligament reconstruction in some cases, and an emerging body of reports has shown its success in the short term. However, there are great concerns about the potential risks of complications, which might prevent its extensive use. We report a rare case of serious synovitis 3 years postoperatively in a 26-year-old man who underwent LARS artificial ligament reconstruction. During revision arthroscopy, we observed a large amount of synovial hyperplasia in the knee joint, containing a large amount of hemosiderin deposition. In addition, the femoral tunnel was placed too anteriorly, and the ligament was ruptured near the tibial tunnel. Histologically, there was thick fibrous scar tissue around the graft, and poorly organized fibrous scar tissue infiltrated into the graft fibers, which could cause loss of structural integrity of the ligament and eventual graft failure. Collectively, our findings might arouse further in-depth research on the development of artificial ligament.