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If the groove is uneven or too shallow, the kneecap could slide off, resulting in a partial or complete dislocation. A sharp blow to the kneecap, as in a fall, can also pop the kneecap out of place.

Some individuals who have had anterior-cruciate-ligament reconstruction (ACLR), the kind of surgery often performed on ...

Less than a month removed from a March 16 surgery following a fall that left him with a dislocated right kneecap and damaged ligament, Koepka is at Augusta National — a course that isn’t ...

The kneecap ‘pops’ out to one side while the ... Patella is permanently dislocated. It can be pushed back into place but ...