Patellar tilt is when the patella is tilted to one side, generally the lateral (outer) side, secondary to tightness in the lateral retinaculum, the fibrous restraint at the lateral side of the patella.
Tight lateral retinaculum
Patellar tilt may be static or associated with instability such as patellar subluxation or even dislocation. Chronic patellar tilt may eventually cause excessive lateral pressure syndrome (ELPS) which may lead to damage of articular cartilage, with changes in both the medial cartilage from pressure alteration and overload on the lateral cartilage which may lead to arthritic damage there and chronic pain.
Lateral patellar retinacular release: changes over the last ten years. da Fonseca LPRM, Kawatake EH and de Castro Pochinib A. Rev Bras Ortop. 2017 Jun-Jul; 52(4): 442–449.
See also -
- Excessive lateral pressure syndrome
- Lateral retinacular release
- Lateral retinacular lengthening
- Patellar tilt test