Patella alta (the patella is abnormally elevated) is the most consistent anatomic feature of patellar instability.
Patella alta: association with patellofemoral alignment and changes in contact area during weight-bearing.
Patella alta ve baja tanisini koyabilmek icin lateral radyografi uzerinden birBok farkli yontem tanimlanmistir (1,3).
Bu olgularda patellar malalignment ve instabiliteye neden olacak lateral femur kondil hipoplazisi, sig troklea, patella alta, vastus medialis kas hipoplazisi, patella displazisi, femoral anteversiyon, medial retinakulum laksisitesi, gergin lateral retinakulum, iliotibial bant kontrakturu gibi predispozan faktorler mevcuttur (27).
The patient progressed slowly through physical therapy gaining 100 degrees of active leg flexion but developed significant quadriceps atrophy, patella alta, and 10 degrees of an extensor lag at 7 months following the procedure.
A 2 x 4 x 1 cm rectangular block of redundant patellar tendon tissue was outlined and resected to correct the degree of patella alta. The patella was mobilized using blunt dissection.
Patella alta, defined as a CDI > 1.2 , creates higher patellofemoral contact forces, which causes anterior knee pain and may limit functionality in patients .
The lateral view allows for assessment of patella alta or baja, based on the Insall-Salvati ratio.
These again include an increased Q angle (increased femoral anteversion, genu valgum, tibia vara isolated to the proximal tibia, or external tibial torsion), MPFL insufficiency, patella alta, or patellofemoral dysplasia.
Patella alta and recurrent dislocation of the patella.
The lateral view yields more commonly used information relating to patella alta or excessively low (patella infra or baja) patella.
They concluded that patella alta is likely to be present if LT exceeds LP by more than 20% (ratio of 1.2 or more) (Fig.