Domínguez GLG, Domínguez CLG

Language: English
References: 0
Page: 304-305
PDF size: 735.67 Kb.

ABSTRACT

Isolated patellofemoral osteoarthritis (PFO) is uncommon, accounting for only 4%; associated with other compartments, its frequency reaches 49%. Its pathophysiology is caused by patellar compression when flexing the knee; the reaction force corresponds to the vectorial sum of the forces of the quadriceps and the patellar ligament, which increases with any increase in knee flexion under load, reaching three times the body weight when ascending and descending stairs and seven to eight times when squatting. Partial arthroplasty of the PF joint is indicated in isolated disabling PFO, without response to conservative treatment, absence of tibiofemoral OA and normal tibiofemoral alignment.