The effect of abductor muscle and anterior-posterior hip contact load simulation on the in-vitro primary stability of a cementless hip stem

Table 1 Loads applied to the hip system

	Loading step	Cycles	Hip contact force (xBW)		F_abd
			F_cc	F_ap(xBW)
Group 1 No abductor	1	1-1000	0.4 to 2.3	0	n/a
	2	1001-2000	0.4 to 2.3	-0.1 to +0.3	n/a
	3	2001-3000	0.4 to 2.3	-0.1 to +0.6	n/a
Group 2 Abductor	1	1-1000	0.4 to 2.3	0	1.1
	2	1001-2000	0.4 to 2.3	-0.1 to +0.3	1.1
	3	2001-3000	0.4 to 2.3	-0.1 to +0.6	1.1

F_cc is in the caudal direction, and a positive F_ap is in the posterior direction. The peak loads (maximum and minimum) were defined based on published data [15], and scaled for a 70 kg individual.

ISSN: 1749-799X