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KMID : 0378019840270080063
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New Medical Journal
1984 Volume.27 No. 8 p.63 ~ p.70
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Etiology of Patellar Chondromalacia and Osteoarthritis in Koreans
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김인/Kim, In
김정만/김수근/이희대/Kim, Jung Man/Kim, Soo Keun/Lee, Hee Dae
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Abstract
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There is a good correlation between the position of patellae and the development of osteoarthritis and chondromalacia patellae.
Roentgenographic findings and physical findings of 49 patients with chondromalacia and 63 patients with osteoarthritis were compared with the findings of 17 normal patients.
A statistical analysis, using student t-text, was made.
The results were as follows :
1. In 17 normal asymptomatic knees, the average femorotibial angle was 7.88º, the patellar height was 16. 5mm and the Insall and Salvati ratio (P/PT) was 0.92. The sulcus angle. was 139.94° and the congruence angle was +2.71°.
2. In chondromalacia patellae, the femorotibial angle was significantly decreased (4.12°.) and the patellar height was also significantly decreased (12mm).
Insall and Salvati ratio was increased (0.99) significantly (patella infera) compared to normal knees. The sulcus angle (124.22°) and the congruence angle (+3.65°) were within normal limits.
3. In osteoarthritis, the femorotibial angle and patellar height were decreased significantly and the Insall and Salvati ratio was increased significantly, as was the case in chondromalacia patellae.
4. In our patients, the increased direct pressure of patellofemoral joint, rather than recurrent subluxation of the patellae, is associated with the development of the chondromalacia patellae and osteoarthritis of the patellae, which are caused by short patellar tendon and the traditional squatting position of Koreans.
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