Table 4.

Mean 3D scapular attitudes (degrees) and standard deviations (SD) calculated in three static shoulder positions.

		Three-dimensional scapular attitudes (in degrees)
		Healthy subjects		SIS subjects
				Impaired shoulder		Non-impaired shoulder
Arm Positions	Scapular Rotations	n = 30 shoulders		n = 8 shoulders		n = 8 shoulders
		Mean	SD	Mean	SD	Mean	SD
Rest	A(-) P(+) T	-9.2	4.3	-7.4	3.7	-6.6	4.2
	L(-) M(+) R	-1.1	4.7	-7.6	3.7	-5.3	4.0
	PRO(+) RET(-)	-31.8	5.6	-33.3	6.8	-32.1	5.5
Flexion 70°	A(-) P(+) T	-3.8	4.5	-3.2	3.9	-1.9	5.2
	L(-) M(+) R	-9.3	3.7	-14.5	4.5	-12.4	4.2
	PRO(+) RET(-)	-39.8	7.5	-40.7	8.2	-39.5	6.7
Abduction 90°	A(-) P(+) T	-1.6	5.6	-1.7	5.2	-1.4	7.1
	L(-) M(+) R	-27.5	4.2	-30.4	4.7	-31.6	9.0
	PRO(+) RET(-)	-19.1	6.1	-18.6	8.7	-20.1	6.6

Abbreviations: A-PT, anterior-posterior tilting; L-MR, lateral-medial rotation; PRO-RET, protraction-retraction; SIS, shoulder impingement syndrome. The 3D scapular attitudes were calculated from the mean of the two first trials from the first session. The method of calculation relative to the trunk was used to calculate the 3D scapular attitudes.