Case: Isolated popliteus tendon avulsion is an extremely rare injury with no consensus in the literature, regarding the therapeutic approach. In our case, the patient presented with rotational instability of the knee, and he was treated surgically. A fully arthroscopic technique with suture anchors was used, and this is the first report of such a repair in the literature. Knee stability was successfully restored, and the patient remains asymptomatic 2 years postoperatively. Conclusion: Isolated popliteus tendon avulsion can result in knee instability. Arthroscopic repair with suture anchors is an efficient way of treatment.

Material and Methods We retrospectively reviewed the data of files of 1972 patients with ACL rupture, which were treated with ACL reconstruction in our Department over the last 27 years. ACL reconstruction complications were divided in two main categories: intraoperative complications and postoperative complications. All complications occurred during the operation and up to 2 (two) years postoperatively were recorded and included in this study. The term "preoperative complications" has been used by other authors 2 in ACL reconstruction, but in our opinion is not accurate. Preoperative planning is very important in the final outcome of ACL reconstruction, but wrong decisions are not complications. As a result, preoperative planning is not discussed in this article. In our perspective, graft failure is a bad clinical outcome and not a complication. Consequently, graft failure will not be reported as a complication in this study.

1-5 Ankle sprain is often accompanied by chondral or osteochondral injuries that may result in persisted pain and disability. 6,7 This is the first case of pure ankle dislocation in the literature, with documented talus bone contusion. This finding is crucial for proper treatment planning in order to avoid complications like tibiotalar degenerative arthritis and talar avascular necrosis. Case ReportA 21 year-old volleyball player injured his left ankle during a second league game. The injury occurred after jumping up at the net and landing on the floor with a fully plantarflexed foot that was inverted during landing. (Fig.1 Physical examination in the emergency room showed a deformed ankle without neurovascular deficit of the foot. Radiographs of the ankle demonstrated ankle dislocation without concomitant syndesmotic injury or malleolar fracture.The ankle was reduced under general anaesthesia. After close reduction, a short leg cast was used for ankle immobilization. (Fig. 2) The patient was then further investigated with magnetic resonance imaging (MRI) to fully explore the structures that were injured. MRI demonstrated rupture of the anterior capsule and anterior talo-fibular ligament and talus bone contusion. (Fig. 3) The cast was kept on for two months. After the cast removal, the patient was referred to the physiotherapist and range of motion exercises were initiated along with partial weightbearing. Three months post-injury, full weight-bearing was permitted.The patient returned to the pre-injury level of activity at six months post-injury. At physical examination there were no signs of residual ligamentous laxity and no ankle effusion and tenderness.

No abstract