Overview
The quadriceps tendon connects the thigh muscle to the top of the kneecap and straightens the knee. A tear, usually from a fall or forceful load on a bent knee and more common after age 40, disrupts the extensor mechanism and, when complete, requires prompt surgical repair to restore the ability to straighten the leg.
Common Symptoms
- A pop and sudden pain above the kneecap
- Inability to straighten the knee or a leg that gives way
- Swelling and a palpable gap above the kneecap
- Difficulty walking or bearing weight
Causes & Risk Factors
- A fall or stumble with the knee bent
- A forceful load on a bent knee
- Tendon weakening with age or medical conditions
Treatment Options
- Non-operative care only for partial tears with intact function
- Prompt surgical repair of the tendon to the kneecap
- A protected brace-and-rehabilitation program
- Physical therapy to restore motion and strength
Recovery & What to Expect
Complete tears are repaired and protected in a brace, with a graduated program restoring motion and strength and return to full activity over 4-6 months.
This page is for general education and is not a substitute for a medical evaluation. Treatment recommendations depend on your individual diagnosis and goals. Kevin O'Donnell, MD serves Coral Gables, Miami, Brickell, Pinecrest, Coconut Grove.