Re-operation rate after surgical treatment of osteochondral lesions of the talus in paediatric and adolescent patients

Table 4 Comparisons between group A (re-operation) and group B (no re-operation)—postoperative MRI

	Group A n = 7	Group B n = 20	P value/test
ICRS classification (n/%)
0	1/16.7	2/18.2	n.s.^b
1	1/16.7	4/36.4
2	3/50.0	2/18.2
3	1/16.7	3/27.3
4	0	0
MOCART 2.0 score (Mean ± SD)	54.2 ± 21.3	45.0 ± 17.7	n.s.^c
Joint effusion (n/%)
Yes	4/66.7	7/63.6	n.s.^b
No	2/33.3	4/36.4
Bone marrow oedema (n/%)
Yes	6/100.0	11/100.0	n.s.^b
No	0	0	n.s.^b
Change of bony contour (n/%)
Yes	3/50.0	8/72.7	n.s.^b
No	3/50.0	3/27.3	n.s.^b
Associated subchondral cyst (n/%)
Yes	2/33.3	4/36.4	n.s.^b
No	4/66.7	7/63.6	n.s.^b

Postoperative MRI was available in 17 cases at the time of retrospective analysis. The median time between operation and last MRI was 13 months (range 2–73 months). MRI magnetic resonance imaging, ICRS International Cartilage Repair Society, MOCART Magnetic Resonance Observation of Cartilage Repair Tissue, SD standard deviation, ^b Chi square test; ^c t test

ISSN: 1749-799X