Search

Introduction: Pull-out suture, suture anchor, and open- wedge high tibial osteotomy have been widely used for surgical treatment of medial meniscus posterior root tear, and relatively good clinical results have been reported. However, radiologic and arthroscopic findings are not sufficient. This report describes the first case, to the best of our knowledge, of medial meniscus posterior root reconstruction and high tibial osteotomy for medial meniscus posterior root tear with varus knee. Case Report: A 78-year-old Japanese man was referred to our hospital due to the right popliteal pain. Plain radiography showed the mechanical axis percentage of the right limb to be 17%, indicating a varus mechanical axis. magnetic Magnetic resonance imaging noted a medial meniscus posterior root tear. Medial meniscus posterior root reconstruction and high tibial osteotomy were performed. His knee injury and osteoarthritis score improved from 22 points preoperatively to 91 points 1 year postoperatively. The graft had a good live induction and the medial meniscus hoop was maintained. Conclusion: This report is the first case, to the best of our knowledge, of medial meniscus posterior root reconstruction and high tibial osteotomy for medial meniscus posterior root tear with varus knee. This type surgical technique may be useful for a meniscus posterior root tear with varus knee. Keywords: Arthroscopy, high tibial osteotomy, knee, medial meniscus posterior root tear, meniscus reconstruction.

Introduction: Localized pigmented villonodular synovitis (PVNS) is a rare and benign condition of synovial tissue proliferation that affects the joints, tendon sheaths, and bursae. This case report is the first to describe a patient with a diagnosis of localized PVNS of the knee after presentation with bilateral and simultaneous onset of associated knee pain. Case Report: A 28-year-old Japanese woman presented to our hospital with a 1-year history of bilateral knee pain and right knee locking that started 1 month ago. Magnetic resonance imaging demonstrated a mass lesion in both the anterior compartment of the right knee and in the posterior compartments of the left knee. Arthroscopic resection of the lesions was performed, and the diagnosis of localized PVNS was made by pathological analysis. At the 6-month follow-up, no evidence of recurrence was noted. Conclusion: This case report describes localized PVNS of the bilateral knee, which is extremely rare. PVNS is a disease requiring surgical resection and should not be overlooked. It should be treated with the possibility of bilateral occurrence in mind.