For most orthopedists, total knee arthroplasty (TKA) has been regarded as the most effective surgery for patients with severe knee diseases. Though seldom occur, postoperative infection certainly remains one of the most devastating and dreaded complications of TKA. Thus, careful and early diagnosis is needed. After diagnosis, categorize the infection type and choose a rightful and sequential step of treatment are recommended.

The results demonstrate that Achilles tendon allografts appeared similar to normal ligaments except for the lack of histological evidence of mechanoreceptors. In other words, there are no newly ingrown mechanoreceptors in ACL allografts.

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Osteochondritis dissecans (OCD) is an increasingly common cause of knee pain and dysfunction among skeletally immature and young adult patients. Operative treatment is indicated for any detached or unstable lesions in which physeal closure is imminent or completed, and nonoperative management has failed. In the case of adult OCD, which will generally have a poor prognosis, 1) surgical intervention is necessary. The treatment of symptomatic lesions in OCD of the knee is difficult, particularly in young patients who wish to maintain a high degree of sports activity.2-5) Management of OCD in a young patient is mul-

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