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Southwestern Orthopaedic Medical Group, Inglewood, California
Southwestern Orthopaedic Medical Group, Inglewood, California
Southwestern Orthopaedic Medical Group, Inglewood, California
Southwestern Orthopaedic Medical Group, Inglewood, California
We reviewed 13 patients with end stage jumper's knee, 10 with patellar tendon ruptures, and 3 with ruptures of the quadriceps tendon to evaluate our long-term results in treating these tendon ruptures in an athletic population. The focus was on the natural history, the time until return, and the level of return, to athletic activity. Jumper's knee affected all patients to a varying degree prior to rupture. Basketball was the most com mon sport involved.
At followup, averaging 4
years, patients underwent functional and clinical, as well as Cybex and roentgen ographic, evaluations. Results indicated patellar tendon ruptures, where the ruptures are complete, have a more favorable prognosis than those of the quadriceps ten don which are incomplete. All of the latter patients continued to have quadriceps tendinitis following repair.
In both groups, the poor results were obtained in patients with chondromalacia and/or patella alta. Cybex testing yielded results of greater than 100% strength in three patients with patellar tendon ruptures, but no patient with quadriceps rupture had comparable test results. There was no apparent relationship between ruptures and cortisone injections.
Patellar and quadriceps tendon ruptures from indirect injury in athletes represent the end stage of jumper's knee and result from repetitive microtrauma. Excellent function usually follows repair of patellar tendon rup tures when surgery is performed early and care is taken to restore normal patellar tendon length. Results of quadriceps ruptures are less satisfactory since these ruptures are usually incomplete and all degenerative tissue may not be involved in the healing response.
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