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Table 1 The mean differences of Kujala score between pre-operative and post-operative assessments in four time periods for group A

From: Use of hyaluronic acid injection after arthroscopic release in lateral patellar compression syndrome with degenerative cartilage changes: randomized control trial

Study variables Periods of assessment N Mean SD Paired t-test P-value
Kujala score Kujala score preoperatively 45 40.60 6.03 − 36.57 < 0.001٭
Kujala score 3 months postoperatively 45 83.28 4.61
Kujala score preoperatively 45 40.60 6.03 −42.57 < 0.001٭
Kujala score 6 months postoperatively 45 84.62 3.09
Kujala score preoperatively 45 40.60 6.03 −46.96 < 0.001٭
Kujala score 1 year postoperatively 45 86.08 1.59
Kujala score preoperatively 45 40.60 6.03 − 48.18 < 0.001٭
Kujala score 2 year postoperatively 45 87.11 1.97
  1. *means statistically significant