Mid-term outcomes of a kinematically designed cruciate retaining total knee arthroplasty

Table 1 Patient demographics

	Knees (n = 255)
Sex, n (%)
Male	88 (34.5)
Female	167 (65.5)
Age (yr) [range]	60.6 [32-83]
Race, n (%)
White	112 (43.9)
African American	63 (24.7)
Asian	10 (3.9)
Other	70 (27.5)
Smoking status, n (%)
Current	14 (5.5)
Former	92 (36.1)
Never	149 (58.4)
Insurance status, n (%)
Medicare	79 (31.0)
Medicaid	32 (12.5)
Commercial	144 (56.5)
ASA score, n (%)
1	4 (1.6)
2	148 (58.0)
3	102 (40.0)
4	1 (0.4)
BMI (kg/m2) [range]	33.5 [16.8-57.8]
CCI	3.0 ± 2.2
Primary diagnosis, n (%)
Primary OA	247 (96.9)
Post-Traumatic OA	7 (2.7)
AVN	1 (0.4)

ASA: American Society of Anesthesiologists; BMI: Body mass index; CCI: Charlson Comorbidity Index; OA: Osteoarthritis; AVN: Avascular necrosis.