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. 2021 Oct 28;22:909. doi: 10.1186/s12891-021-04794-5

Table 3.

Patellar cartilage defects change in each group given as number (%)

ACLR isolated
(n = 32)
ACLR combined
(n = 25)
Controls
(n = 9)
p value
Baseline defect score 0.26
 Grade 0 18 (56%) 15 (60%) 7 (78%)
 Grade 1 12 (38%) 7 (28%) 1 (11%)
 Grade 2 1 (3%) 3 (12%) 0 (0)
 Grade 3 1 (3%) 0 (0) 0 (0)
 Grade 4 0 (0) 0 (0) 1 (11%)
Follow-up defect score 0.42
 Grade 0 25 (78%) 20 (80%) 7 (78%)
 Grade 1 5 (16%) 2 (8%) 1 (11%)
 Grade 2 1 (3%) 3 (12%) 0 (0)
 Grade 3 1 (3%) 0 (0) 0 (0)
 Grade 4 0 (0) 0 (0) 1 (11%)
Defect changes
 Progression 1 (3%) 2 (8%) 0 (0) 0.73
 Stable 23 (72%) 17 (68%) 9 (100%) 0.18
 Regression 8 (25%) 6 (24%) 0 (0) 0.29