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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.
Other names. Quadriceps tendon tear. An x-ray demonstrating quadriceps tendon rupture. Note the abnormal angle of the patella and soft-tissue swelling marked by the arrow. Specialty. Orthopedic. A quadriceps tendon rupture is a tear of the tendon that runs from the quadriceps muscle to the top of the knee cap. [1]
Frequency. 6 per 100,000 per year [4] A patellar dislocation is a knee injury in which the patella (kneecap) slips out of its normal position. [5] Often the knee is partly bent, painful and swollen. [1][2] The patella is also often felt and seen out of place. [1] Complications may include a patella fracture or arthritis.
Biceps femoris tendon rupture can occur when the biceps femoris is injured in sports that require explosive bending of the knee as seen in sprinting. If the athlete is fatigued or has not warmed up properly he/she may suffer a hamstring strain/rupture, which is the tearing of the hamstring muscle. Avulsion of the biceps femoris tendon is the ...
A variety of conditions can cause posterior knee pain that worsens when you straighten your leg. This includes muscle strains, ligament tears, nerve or meniscus damage, Baker’s cysts, and blood ...
Beyond 30 degrees, the quadriceps tendon and patellar ligament pull the patella posterior into the groove of the knee joint making lateral dislocation of the patella unlikely. Dislocation recurs in about 15–44% of cases, [4] and symptoms continue in about half. Recurrence of a laterally displaced patella is more common as the incidence of ...
Anterior cruciate ligament injury. An anterior cruciate ligament injury occurs when the anterior cruciate ligament (ACL) is either stretched, partially torn, or completely torn. [1] The most common injury is a complete tear. [1] Symptoms include pain, an audible cracking sound during injury, instability of the knee, and joint swelling. [1]
Patellar tendinitis, also known as jumper's knee, is an overuse injury of the tendon that straightens the knee. [1] Symptoms include pain in the front of the knee. [1] Typically the pain and tenderness is at the lower part of the kneecap, though the upper part may also be affected. [2] Generally there is no pain when the person is at rest. [2]