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Background: Jumper's knee, patellar tendinopathy, is a clinical term used to describe patellar tendon pain, swelling, and/or dysfunction resulting from acute injury or, more commonly, chronic overuse. This condition is prevalent among athletes. In patients with patellar tendinopathy in whom non-operative management is unsuccessful; surgery is an option to return to high levels of physical activity. Aim: This work aimed to evaluate the results of arthroscopic management of cases with chronic refractory patellar tendinopathy (jumper's knee). Methods: This is a prospective study that was done at Kafr El-Sheikh and Benha university hospital. 28 patients involved in sports activities with chronic patellar tendinitis aged 18-3o years with the mean age of 23.25 years were considered to have arthroscopic treatment to refractory chronic patellar tendinopathy after at least 3 months of conservation. All patients in the study underwent arthroscopic debridement of the Hoffa's bad fat, debridement of abnormal patellar tendon, with or without excision of the lower pole of the patella. Preoperative and postoperative evaluation was undertaken using the VAS score, Lysholm Scores and Victorian Institute of Sport Assessment-Patella (VISA-P) scores for all patients. No patients were lost to follow-up. Results: The VAS, Lysholm, and VISA-P scores all significantly improved at last follow-up. There were no postoperative complications. 27 patients of 28 were able to perform at their preinjury sports activities. One case was not able to return to preinjury sports activity. Conclusion: arthroscopic surgery for patients with patellar tendinopathy, refractory to non-operative management, appears to provide significant improvements in symptoms and function.

Background: Genu varum of the knee is a predisposing factor for osteoarthritis of the medial femoro-tibial compartment. High tibial osteotomy is the surgery of choice for such patients. Patello-femoral abnormalities have a negative effect on the prognosis of high tibial osteotomy. Both pre-existing patellar pain and patello-femoral joint space narrowing are reported to be more severe after high tibial osteotomy. The idea of high tibial osteotomy is to unload an overloaded compartment, to slow down the progress of osteoarthritis and to allow healing of articular cartilage. Aim of this work: was to assess and analyze the changes in patellar height after medial open wedge high tibial osteotomy. Patients and Methods: This was a prospective and retrospective case series study performed in the period from 2018 till 2019 on 30 patients at Kafr El SheikhUniversity Hospital. The age ranged between19-54 years. There was 16 male (53.33%) and 14 females (46.66%). In 19 knees the left side was affected (63.33%), 11 knees (36.66%) on the right side and three bilaterally (10%). Results: After medial opening wedge high tibial osteotomy and measurement the patellar height preoperatively and postoperatively, we found the patellar height on the Caton-Deschamps ratio method the patella was lowered in 22 cases, remained constant in 8 cases.