Promising short-term clinical results of the cementless Oxford phase III medial unicondylar knee prosthesis

Table 1 Patient characteristics

	Cementedn = 53	Cementlessn = 46	P value
Age (yr)	64.6 ± 8.2	62.2 ± 6.7	0.12
Sex			0.471
Male	21 (39.6%)	21 (45.7%)
Female	32 (60.4%)	25 (54.3%)
ASA			0.497
1	15 (28.3%)	10 (21.7%)
2	30 (56.6%)	31 (67.4%)
3	8 (15.1%)	5 (10.9%)
BMI (kg/m2)	27.7 ± 4.1	29.0 ± 4.7	0.17
Follow-up (mo)	20.5 ± 3.9	18.3 ± 4.5	0.02
Ahlbäck grade medial joint space			0.442
0 (> 3 mm)	0 (0%)	1 (2.2%)
1 (< 3 mm)	41 (77.4%)	33 (71.7%)
2 (Obliteration)	10 (18.9%)	12 (26.1%)
3 (Attrition < 5 mm)	2 (3.8%)	0
Ahlbäck grade lateral joint space			0.129
0 (> 3 mm)	53 (100%)	45 (95.7%)
1 (< 3 mm)	0	2 (4.3%)
2 (Obliteration)	0	0
3 (Attrition < 5 mm)	0	0
Ahlbäck grade patellofemoral joint space			0.139
0 (> 3 mm)	29 (54.7%)	18 (39.1%)
1 (< 3 mm)	23 (43.4%)	28 (60.9%)
2 (Obliteration)	1 (1.9%)	0
3 (Attrition < 5 mm)	0	0

BMI: Body mass index.