How much preoperative flexion contracture is a predictor for residual flexion contracture after total knee arthroplasty in hemophilic arthropathy and rheumatoid arthritis?

Table 4 Incidence of patella baja and pseudo-patella baja

^‡Statistical significance was analyzed in comparison of postoperative incidence of patella baja or pseudo-patella baja in patients with normal preoperative patellar height
^aPatella baja: both Insall–Salvati ratio (< 0.8) and Blackburne–Peel ratio (< 0.54) are abnormally low
^bPPB (pseudo-patella baja): normal Insall–Salvati ratio (0.8–1.2) but low Blackburne–Peel ratio (< 0.54)

ISSN: 2234-2451