Understanding instability
The kneecap can partially or completely dislocate from its groove, the trochlea. A dislocation can damage the stabilizing ligaments and cartilage. Pain at the front of the knee does not, in itself, indicate instability.
Investigate Predisposing Factors
The examination and radiographs evaluate the patella and the limb axis. The MRI specifically looks for cartilage damage or a detached fragment. The shape and alignment of the trochlea are taken into account.
Rehabilitation or surgery?
After a first episode, rehabilitation and sometimes a brace are often recommended. Recurrence or certain associated injuries may justify surgery. Depending on the anatomy, surgery may reconstruct the medial patellofemoral ligament (MPFL) or correct a bony contributing factor.
Gradual Resumption
Follow-up assesses mobility, strength, and stability. Return to sports depends on recovery and treatment.
Your questions.
Can a still-dislocated kneecap wait?+
No. A persistent deformity after an accident requires urgent evaluation. Do not attempt to realign it yourself.
Child or adolescent?
A care pathway dedicated to children from age 6. Visit the pediatric website ↗