Posterior condylar offset changes and its effect on clinical outcomes after posterior-substituting, fixed-bearing total knee arthroplasty: anterior versus posterior referencing

Table 1 Comparisons of the patient demographics and preoperative variables between the AR and the PR groups

Variable	AR group	PR group	p-value
Variable	(n = 93)	(n = 91)	p-value
Sex, Female	64 (94%)	54 (87%)	0.550
Age (years)	73 ± 6.1	71 ± 6.0	0.008
BMI (kg/m²)	26.5 ± 3.6	26.5 ± 3.6	0.494
PCO (mm)	28.1 ± 3.6	27.4 ± 2.8	0.126
PCOR	0.47 ± 0.04	0.47 ± 0.03	0.394
ROM (°)	120 ± 17.1	120 ± 16.6	0.804
WOMAC	44.2 ± 15.9	38.0 ± 12.6	0.038

Data are presented as the means and standard deviations (SD)
Abbreviations: AR anterior referencing, PR posterior referencing, PCO posterior condylar offset, PCOR posterior condylar offset ratio, ROM range of motion, WOMAC Western Ontario and McMaster University osteoarthritis index, BMI body mass index

ISSN: 2234-2451