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Table 3 Comparison of ROM and clinical outcome between the patellofemoral OA progression and non-progression group

From: Preoperative flexion contracture is a predisposing factor for cartilage degeneration at the patellofemoral joint after open wedge high tibial osteotomy

  Preoperative P value Postoperative P value
Group P Group N Group P Group N
ROM
 Extension (degrees) - 4.4 ± 4.1 - 1.3 ± 2.5 < 0.01 - 4.6 ± 4.5 - 2.7 ± 3.1 0.07
 Flexion (degrees) 144.3 ± 3.8 146.9 ± 6.1 0.08 143.9 ± 3.8 145.4 ± 5.1 0.33
Clinical outcome
 Lysholm score (points) 56.6 ± 8.6 57.5 ± 10.7 0.74 87.9 ± 7.6 91.6 ± 5.8 < 0.05
 Kujala score (points) 54.2 ± 6.6 55.5 ± 8.7 0.61 85.3 ± 7.2 93.6 ± 5.9 <  0.05
  1. ROM range of motion, OA osteoarthritis