Patellar tendon injury
How do patellar tendon rupture and patellar tendinitis differ?
Doctor’s answer
Patellar tendinitis usually causes gradual pain below the kneecap that worsens with jumping and squatting. Patellar tendon rupture often occurs suddenly during takeoff or landing and may make active knee extension or straight-leg raising difficult. Suspected rupture needs prompt assessment.
Author: Dr. Jiwu Chen Medical review: Dr. Jiwu Chen
This content is for education. Diagnosis, treatment, and rehabilitation require an individual assessment by a sports medicine specialist.
Related questions
Is pain below the kneecap after jumping a sign of jumper’s knee?
Patellar tendinopathy commonly causes localised pain below the kneecap that worsens with jumping, running, or squatting. Treatment usually focuses on load management and progressive strengthening.
Why should rehabilitation after sports medicine surgery not follow time alone?
A timeline gives only a rough stage. Progress is determined by pain, swelling, range of motion, strength, movement control, tissue healing, and what was done during surgery. Moving too quickly may increase failure risk; moving too slowly may lead to stiffness and loss of function.
Can long-term pain after a sports injury become chronic pain?
Yes. Persistent pain may relate to incomplete tissue recovery, loading too soon, joint stiffness, strength deficits, sleep or mood issues, and pain sensitisation. Treatment should reassess the diagnosis and combine rehabilitation, load management, and pain education.