Patellar tendon rupture is a tear of the tendon that connects the knee cap (patella) to the tibia.[1] Often there is sudden onset of pain and walking is difficult.[1] In a complete rupture, the ability to extend that knee is decreased.[1] A pop may be felt when it occurs.[2]
Injury to the patellar tendon generally requires a significant force such as falling directly on the knee or jumping from a height.[1] Risk factors include patellar tendinitis, kidney failure, diabetes, and steroid or fluoroquinolone use.[1][2] There are two main types of ruptures: partial and complete.[1] In most cases, the patellar tendon tears at the point where it attaches to the knee cap.[1] Diagnosis is based on symptoms, examination, and medical imaging.[1]
Small tears may be treated with rest and splinting, followed by physiotherapy.[1][2] Larger tears typically require surgery within a couple of weeks.[1][2] Outcomes are generally good.[1] Rates in the general population are not clear; however, in certain high-risk groups it occurs about 1 in 10,000 per year.[2] They occur most often in those under the age of 40.[2]
^ abcdefghijklmnopqr"Patellar Tendon Tear". OrthoInfo - AAOS. February 2016. Retrieved 7 July 2018.
^ abcdefghiBracker MD (2012). The 5-Minute Sports Medicine Consult. Lippincott Williams & Wilkins. p. 446. ISBN 9781451148121.
^"Knee Extensor Injuries - Injuries and Poisoning". Merck Manuals Consumer Version. Retrieved 5 November 2018.
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