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Causes could include:
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muscle injury
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Ligament injury
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Grade I sprains and mild strains are usually self-diagnosed. Grade II and III sprains are often seen by a physician, who x rays the area to differentiate between a sprain and a fracture.
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Grade I sprains and strains are usually self-diagnosed. Grade II and III sprains are often seen by a physician, who may x ray the area to differentiate between a sprain and other serious joint injuries. Since muscles don't show up on x ray, Grade ...
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Both sprains and strains are due to increased demand or large stresses placed on the involved structures, i.e., ligament, muscle, or tendon.
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Any unfamiliar activity that stresses a muscle or joint may cause a strain or sprain. Heavy lifting, falls, and playing a sport without warming up or conditioning are common causes. There are three grades of sprains. Grade I sprains are mild injur...
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Detailed information on the most common ligament injuries to the knee
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