Arthroscopic all-inside repair of posterior root tear of medial meniscus using FasT-Fix through accessory medial portal is an alternative easier and faster surgical option which shows relatively good results at a 1-year follow-up.
A new technique for repairing posterior root tears of the medial meniscus (PRTMM) using FasT-Fix and its clinical and radiological results are reported.
This retrospective study included 34 patients who underwent arthroscopic surgery to repair PRTMM using FasT-Fix. An accessory medial portal was formed to direct the FasT-Fix to the posterior medial meniscus and the remnant root of the tibial side or the posterior cruciate ligament sheath. Clinical outcomes were evaluated using the Lysholm knee score obtained preoperatively and at 3, 6, and 12 months postoperatively. Kellgren-Lawrence grades of knee osteoarthritis were recorded preoperatively and at the 1-year follow-up using radiographs. The mechanical tibia-femoral axis was measured on a lower extremity scanogram. Medial meniscus extrusion was measured preoperatively and postoperatively using mid-coronal magnetic resonance imaging.
The mean age of the patients was 63.2 years. The mean operative time was 40 minutes. The mean International Cartilage Repair Society grade from the arthroscopic images was 2.73, and the mean varus deformity angle was 3.8?. The mean Kellgren-Lawrence grades were 1.55 and 1.66 on the preoperative and 1-year follow-up radiographs, respectively. The mean preoperative and 1 day postoperative meniscal extrusion were 3.59 mm and 2.96 mm, respectively. The mean preoperative Lysholm knee score was 52.5, and it improved to 85.5 at the 1-year follow-up. One patient underwent re-repair of the PRTMM because of a re-tear identified at the 1-year follow-up. No patients required total knee arthroplasty conversion surgery.
Arthroscopic all-inside repair of PRTMM using FasT-Fix is an alternative surgical option which shows relatively good results at a 1-year follow-up.