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. 2022 Dec 27;13:203. doi: 10.1186/s13244-022-01341-1

Table 4.

Differences in control MRI findings (within 7 days prior to return to play) between professional athletes with and without reinjury

Variables Non-reinjury (n = 50) Reinjury (n = 9) OR (95% CI) p value
Transversal and/or mixed connective tissue gap
 Absent 49 (9.8) 5 (55.6) 39.2 (3.64–422.14) 0.002
 Present* 1 (2.0) 4 (44.4)
Loss of tendon tension
 Absent 42 (84.0) 6 (66.8) 2.63 (0.54–12.7) 0.231
 Present* 8 (16.0) 3 (33.3)
Longitudinal connective tissue gap
 Absent 44 (88.0) 7 (77.8) 2.10 (0.35–12.52) 0.417
 Present 6 (12.0) 2 (22.2)
Muscle fibres tear
 Absent 43 (86.0) 7 (77.8) 1.76 (0.30–10.23) 0.532
 Present 7 (14.0) 2 (22.2)
Loss of pennation angle
 Absent 38 (76.0) 7 (77.8) 1
 Present 12 (24.0) 2 (22.2) 0.90 (0.17–4.95) 0.908
Global improvement in oedema
 Absent 21 (42.0) 4 (44.4) 0.91 (0.22–3.78) 0.891
 Present 29 (58.0) 5 (55.6)
Adaptive oedema
 Absent 5 (10.0) 2 (22.2) 0.39 (0.06–2.41) 0.310
 Present 45 (90.0) 7 (77.8)
Feather oedema
 Absent 30 (60.0) 4 (44.4) 1.87 (0.45–7.85) 0.389
 Present* 20 (40.0) 5 (55.6)
Intermuscular oedema
 Absent 35 (70.0) 2 (22.2) 8.17 (1.52–43.99) 0.015
 Present* 15 (30.0) 7 (77.8)
Scar maturity
 Immature 18 (36.0) 5 (55.6) 0.45 (1.11–1.89) 0.276
 Mature 32 (64.0) 4 (44.4)
Hypertrophic scar
 Absent 13 (26.0) 2 (22.2) 1.09 (0.23–5.10) 0.916
 Present 36 (72.0) 7 (77.9)
Scar morphology
 Absent 10 (20.0) 2 (22.2) 1.15 (0.39–3-35) 0.799
 Elongated 34 (68.0) 6 (66.8)
 Round 5 (10.0) 0
 Fusiform 1 (2.0) 1 (11.1)
Callus gap
 Absent 46 (92.0) 6 (66.7) 5.75 (1.03–32.17) 0.046
 Present* 4 (8.0) 3 (33.3)
Risk of reinjury
 Low: absence of any radiological sign 38 (76.0) 1 (11.11)
 Medium: presence one radiological sign 12 (24.0) 2 (22.22)
 High: presence of two radiological signs 0 (0.0) 6 (66.67) 29.58 (3.86–226.64) 0.001

*Radiological signs included in the model of the risk of reinjury