Table 1.

Patient demographics

Demographic	PFC cohort	LCS cohort
Mean age (years)	71 (range, 52–89)	70 (range, 37–81)
Sex (percent female)	59	56
Number of knees	101	118*
Number of patients	75	86
Diagnosis
Primary osteoarthritis	85%	88%
Rheumatoid arthritis	13%	10%
Posttraumatic arthritis	1%	2%
Osteonecrosis	1%	0%

PFC = Press-Fit Condylar knee; LCS = Low Contact Stress.

* One lost to followup.