Table 1.

Demographics of the knee cohort for group analysis

Demographic	All	Group HF	Group U	Significance
Number of patients who can do any high-flexion activity	72	39 (54.2%)	33 (45.8%)
Number of patients who can do each high-flexion activity
Squatting		20 (27.8%)
Kneeling		11 (15.3%)
Sitting crosslegged		34 (47.2%)
Mean age (years; range)		67.8 (51–79)	68.8 (49–79)	0.579
Mean followup (years; range)		5.1 (0.9–8.6)	6.3 (0.9–8.6)	0.047
Mean body mass index (kg/m2; range)		26.7 (19.4–32.0)	25.4 (19.4–30.1)	0.087