Quantitative MRI indicators and features for partial subscapularis tendon tears on conventional shoulder MRI

Insights into Imaging

Table 3 Numbers of patients in the control group (no-tear group) and case group (partial tear group) based on MRI findings compared to the gold standard (arthroscopic findings)

MRI findings	Arthroscopy findings		Odd ratio (95%)	p value
MRI findings	No-tear	Partial-tear	Odd ratio (95%)	p value
Fissure sign
(+)	4	67	35.0 (11.3–108.4)	< 0.001
(−)	46	22	35.0 (11.3–108.4)	< 0.001
Thinning of SSC
(+)	7	34	3.8 (1.5–9.4)	0.003
(−)	43	55	3.8 (1.5–9.4)	0.003
Fluid collection under the CGA
(+)	10	45	4.1 (1.8–9.2)	< 0.001
(−)	40	44	4.1 (1.8–9.2)	< 0.001
LTC
(+)	16	50	2.7 (1.3–5.6)	0.006
(−)	34	39	2.7 (1.3–5.6)	0.006
Combined SSP complete tear
(+)	10	43	3.7 (1.7–8.4)	0.001
(−)	40	46	3.7 (1.7–8.4)	0.001

Fluid collection under the CGA: maximum distance of fluid under the CGA > 3.55 mm recorded as (+), otherwise recorded as (−)
SSC Subscapularis, CGA Coraco-glenoid arch, LTC Lesser tuberosity cysts, SSP Supraspinatus tendon