What should you know about quad tendon rupture?

The quadriceps tendon connects the thigh muscles to the kneecap. A complete tear can interrupt the mechanism that straightens the knee; a partial tear may preserve some movement but still cause pain and weakness. People may notice a pop, swelling above the kneecap, a gap, or the knee giving way. Examination and sometimes imaging help distinguish a tendon injury from a muscle strain, kneecap problem, or fracture.

Stop sport and protect the leg until assessed. Keep the knee supported in a comfortable position, avoid forceful bending, and use crutches if advised. Do not massage the area or test strength repeatedly. Treatment depends on tear severity, function, and other injuries; some complete ruptures require Tendon Repair Surgery. Following treatment, Post-Operative Rehabilitation may restore controlled motion, strength, and walking through staged exercises.

Seek urgent medical assessment after a pop with sudden weakness, visible swelling, a change in the kneecap position, or inability to lift the straight leg. Emergency care is appropriate for severe pain after major trauma, an open wound, a cold or numb foot, or rapidly increasing swelling. Do not wait for symptoms to settle if the knee cannot actively straighten.

Is the tear partial or complete? Do I need imaging or surgery? How should the knee be protected now? When can rehabilitation begin, and which movements are restricted?