Table 2.

Measured hip joint forces in the four patients

		Maximum force (N)	Minimum force (N)	Flexion angle at the minimum force (°)	Force at 90 flexion (N)
Patient 1	Mean	312.0*	116.9	30.0	279.8
	Range	312.0*	105.5 – 128.4	28.0—33.0	249.6—283.8
	COV(%)	*	7.4	7.2	8.3
Patient 2	Mean	384.7	135.0	39.4	174.9
	Range	348.2—437.8	122.1—143.2	45.0—35.4	164.6—182.3
	COV (%)	12.2	8.4	10.3	5.3
Patient 3	Mean	791.2	134.5	46.2	222.5
	Range	779.5—804.2	132.8—137.0	43.8—50.4	210.4—233.9
	COV (%)	1.6	1.6	6.2	5.3
Patient 4	Mean	186.9	93.0	15.7	155.1
	Range	182.9—194.5	84.8—97.2	13.6—17.1	152.8—158.2
	COV (%)	3.5	7.6	9.5	1.8
Mean		418.7	120.0	32.8	204.5
Mean intrasubject COV (%)		5.8	6.5	8.3	4.7
Intersubject COV (%)		58.3	16.5	40.2	24.2

^*Data was limited or not available due to errors. COV% = The coefficient of variation