Table 1.

Qualitative characteristics of the ligaments of the STT joint asymptomatic (n = 25) and symptomatic (n = 17) patients

		Ligament	Visibility	Ligament signal intensity			Ligament morphology
				Low	Increased	Striated	Distinct	Indistinct
Asymptomatic	Reader 1	rpSTL	20/25 (80.0%)	16/20 (80.0%)	4/20 (20%)	0/20(0%)	14/20 (70.0%)	6/20 (30.0%)
		pSTTC	14/25 (56.0%)	12/14 (85.7%)	2/14 (14.3%)	0/14 (0%)	12/14 (85.7%)	2/14 (14.3%)
		pSCL	25/25 (100%)	12/25 (48.0%)	6/25 (24.0%)	7/25 (28.0%)	23/25 (92.0%)	2/25 (8.0%)
		dSTTC	25/25 (100%)	24/25 (96.0%)	1/25 (4.0%)	0/25 (0%)	23/25 (92.0%)	2/25 (8.0%)
	Reader 2	rpSTL	20/25 (80.0%)	17/20 (85.0%)	3/20 (15.0%)	0/20 (0%)	16/20 (80.0%)	4/20 (20%)
		pSTTC	12/25 (48.0%)	12/12 (100%)	0/12 (0%)	0/12 (0%)	12/12 (100%)	0/12 (0%)
		pSCL	25/25 (100%)	11/25 (44.0%)	8/25 (32.0%)	6/25 (24.0%)	20/25 (80.0%)	5/25 (20.0%)
		dSTTC	25/25 (100%)	23/25 (92.0%)	2/25 (8.0%)	0/25 (0%)	21/25 (84.0%)	4/25 (16.0%)
Symptomatic	Reader 1	rpSTL	16/17 (94.2%)	7/16 (43.8%)	9/16 (56.3%)	0/16 (0%)	8/16 (50.0%)	8/16 (50.0%)
		pSTTC	8/17 (47.1%)	4/8 (50.0%)	4/8 (50.0%)	0/8 (0%)	5/8 (62.5%)	3/8 (37.5%)
		pSCL	17/17 (100%)	6/17 (35.3%)	10/17 (58.8%)	1/17 (5.9%)	11/17 (64.7%)	6/17 (35.3%)
		dSTTC	17/17 (100%)	15/17 (88.2%)	2/17 (11.8%)	0/17 (0%)	15/17 (88.2%)	2/17 (11.8%)
	Reader 2	rpSTL	14/17 (82.4%)	7/14 (50.0%)	7/14 (50.0%)	0/14 (0%)	9/14 (64.3%)	5/14 (35.7%)
		pSTTC	6/17 (35.3%)	4/6 (66.7%)	2/6 (33.3%)	0/6 (0%)	5/6 (83.3%)	1/6 (16.7%)
		pSCL	17/17 (100%)	7/17 (41.2%)	9/17 (52.9%)	1/17 (5.9%)	11/17 (64.7%)	6/17 (35.3%)
		dSTTC	17/17 (100%)	15/17 (88.2%)	2/17 (11.8%)	0/17 (0%)	13/17 (76.5%)	4/17 (23.5%)

Abbreviations: rpSTL, radiopalmar scapho-trapezial ligament; pSTTC, palmar scapho-trapezial-trapezoidal capsule; pSCL, palmar scapho-capitate-capsular ligament; dSTTC, dorsal scapho-trapezial-trapezoidal capsule