Table 4: Summary of 12 Month Oxford, WOMAC and HAAS Scores for Each Arthroplasty Group According to BMI Grouping

Oxford Scores	THA			TKA			UKA
	BMI < 30	BMI 31-35	BMI > 35	BMI < 30	BMI 31-35	BMI > 35	BMI < 30	BMI 31-35	BMI > 35
Mean score at 12 months	42.00	40.76	39.75	38.58	36.99	36.01	41.03	39.06	36.44
SD	6.52	6.92	7.03	7.32	8.71	8.53	6.99	8.47	9.26
Number	630	175	81	336	178	100	158	88	32

WOMAC Scores	THA			TKA
	BMI < 30	BMI 31-35	BMI > 35	BMI < 30	BMI 31-35	BMI > 35
Mean score at 12 months	82.78	79.06	77.54	78.78	77.28	75.03
SD	13.51	14.27	15.92	14.51	16.73	16.95
Number	627	174	81	336	178	100

HAAS Scores	THA			TKA
	BMI < 30	BMI 31-35	BMI > 35	BMI < 30	BMI 31-35	BMI > 35
Mean score at 12 months	10.51	10.17	10.46	9.78	9.35	8.93
SD	2.08	2.32	1.92	2.34	2.79	2.96
Number	629	175	81	336	178	100