Observations on patellar height after proximal tibial osteotomy.
Sixty-six knees (sixty patients) that had had a proximal tibial osteotomy were evaluated to determine if any alteration of the patellar height had occurred as a result of the operation. Eighty-nine per cent of the patellae, as measured by the Insall-Salvati index, and 76.3 per cent, as measured by the Blackburne-Peel index, were observed to be lowered as they appeared on the postoperative lateral radiograph. This was probably due to shortening of the patellar ligament after prolonged immobilization in a cast, interstitial scarring of the patellar ligament, and new-bone formation in the area of insertion of the patellar ligament. There was no correlation between the postoperative height of the patella and the need for subsequent revision to a total knee replacement.
Scuderi
G R
GR
Hospital for Special Surgery, New York Hospital, Cornell University Medical College, N.Y. 10021.
Windsor
R E
RE
Insall
J N
JN
D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery; D010003:Osteoarthritis / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D010027:Osteotomy / Q000009:adverse effects; D010329:Patella / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography; D012086:Reoperation; D013977:Tibia / Q000000981:diagnostic imaging / Q000601:surgery*