TABLE 2.

Incidence of Extension Deficit and Hamstrings Contracture in Control and Cyclops Groups

Extension Deficit	Control Group (n = 45)	Cyclops Group (n = 45)	Statistic
Extension deficit at 3 wk	10 in 45 (22%)	32 in 45 (71%)	χ2 = 21.6; P = 3.3 × 10−6a
Extension deficit related to hamstrings contracture at 3 wk	10 in 45 (22%)	26 in 45 (58%)	χ2 = 11.8; P = .0006a
Extension deficit at 6 wk	3 in 45 (7%)	27 in 45 (60%)	χ2 = 28.8; P = 8.02 ×10−8a
Extension deficit related to hamstrings contracture at 6 wk	1 in 45 (2%)	13 in 45 (29%)	χ2 = 12.2; P = .0005a

^aStatistically significant.