Chondral injuries of the ankle with recurrent lateral instability: an arthroscopic study.

Background: Prolonged lateral instability of the ankle after ligament injury has been believed to be a major cause of osteoarthritis of the ankle, yet the rate of development of osteoarthritis of the ankle is relatively low. Clarifying the relationship between patient factors and chondral damage of the ankle with prolonged instability is essential to identify the important risk factors underlying osteoarthritis of the ankle.

Methods: Arthroscopic examination was performed to assess the condition of the articular cartilage in a series of patients with prolonged lateral instability of the ankle.

Intra-articular angioleiomyoma of the knee: a case report.

We report a rare case of angioleiomyoma that occurred in the intra-articular portion of the knee joint. A 43-year-old female was referred to us with a 3-year history of recurrent pain and a loss of full extension of the right knee. Physical examinations revealed swelling and restriction of active full extension.

Regeneration of the hamstring tendons after harvesting for arthroscopic anterior cruciate ligament reconstruction: a histological study in 11 patients.

The purpose of our study is to evaluate whether the hamstring tendons can regrow after harvesting for anterior cruciate ligament (ACL) reconstruction and whether the regenerate tissue can be histologically characterized as tendinous. Eleven of the patients (eight female and three male; mean age, 23 years; range 17-37 years) consented to participate in this study. One year after the ACL reconstruction, surgical biopsy was done.

Premature failure of the polyethylene tibial bearing surface of the Interax knee arthroplasty.

Thirty-four patients (37 knees) were treated with the Interax knee arthroplasty. There were 31 female and 3 male patients with a mean age at surgery of 70 years (range, 53-84 years). Premature failure of the polyethylene tibial bearing surface occurred in 9 patients (9 knees).

Intra-articular synovial hemangioma; a rare cause of knee pain and swelling.

Introduction: Synovial hemangioma is a rare intra-articular benign tumor that is difficult to diagnose because of its nonspecific symptoms. Patients are generally children or young adults with a nontraumatic recurrent swollen painful knee.

Case Presentation: A 24-year-old woman presented with a 20-year history of recurrent pain and swelling in the right knee.

Glomus tumor of the lateral aspect of the knee joint.

Background: We report a rare case of glomus tumor that occurred in the lateral joint of the knee. A 54-year-old man was referred to us with a 3-year history of lateral pain in the left knee and the diagnosis of lateral meniscus injury. Physical examination revealed a small trigger point localized just on the lateral joint space.

Achilles tendon rupture associated with injury of the calcaneofibular ligament.

A 49-year-old man collided against an infielder when he slid into second base during a recreational baseball game. He was unable to continue in the game due to diffuse pain and swelling of his hindfoot. A rupture of the Achilles tendon was diagnosed incidentally on palpation and observation of a positive Thompson's squeeze test.

Tenosynovial osteochondromatosis of the tarsal tunnel.

A case of tenosynovial osteochondromatosis in the tarsal tunnel in a 23-year-old man is presented. The lesion was treated surgically, and multiple osteochondromas were excised, which had no continuity with any tarsal bone or joint cavity but did with the sheaths of the flexor digitorum longus and flexor hallucis longus. Histologic examination of the lesion showed a fibrous capsule, hyaline cartilage and extensive areas of cancellous bone.

Reconstruction of the lateral ankle ligaments with bone-patellar tendon graft in patients with chronic ankle instability: a preliminary report.

Background: Unsatisfactory long-term results have been reported after use of a Broström repair for patients with chronic ankle ligament insufficiency.

Hypothesis: Repair or reconstruction of both the anterior talofibular and calcaneofibular ligaments is essential for normal kinematics of the ankle-hindfoot.

Study Design: Case series.