Table 3.

Biomechanical parameters on the operated hip compared to the native contralateral hip (unilateral hip arthroplasty). Data presented as mean (SD, range)

Parameter	SHA (n = 45)	THA (n = 42)	p valuea
Horizontal femoral offset	+3.6 (±6.4, −8 to 18)	−0.2 (±6.4; −12 to 15)	0.007
Vertical femoral offset	+6.2 (±4.9, −3 to 17)	+4.6 (±5.2; −5 to 17)	0.14
Horizontal hip centre of rotation	−2.2 (±3.9, −12 to 5)	−1.1 (±3.0; −8 to 5)	0.15
Vertical hip centre of rotation	+2.4 (±4.5, −15 to 12)	+2.3 (±3.9; −6 to 10)	0.92
Abductor lever arm	−1.4 (±5.9, −14 to 15)	−1.9 (±5.5; −13 to 11)	0.69
Leg length	+3.3 (±5.3, −10 to 14)	+1.3 (±3.4; −7 to 9)	0.03

SD standard deviation, SHA short-stem hip arthroplasty, THA total hip arthroplasty

^a p value: SHA vs. THA