Should a Patients BMI Status be Used to Restrict Access to Total Hip and Knee Arthroplasty? Functional Outcomes of Arthroplasty Relative to BMI

Table 6: Difference in Mean Functional Scores of ≤ 30 BMI Group vs Higher BMI Groups at 12 Month Post Op

THA Group	Oxford		WOMAC		HAAS
THA Group	BMI31-35	BMI> 35	BMI31-35	BMI> 35	BMI31-35	BMI> 35
Difference in mean score of ≤30 BMI group compared to higher BMI groups	1.24	2.25	3.72	5.24	0.34	0.05
95% Confidence interval	0.13 - 2.35	0.72 - 3.78	1.42 - 6.02	2.04 - 8.44	-0.02 - 0.70	-0.04 - 0.05
P value	0.0282	0.0039	0.0016	0.0014	0.0658	0.836
TKA Group	Oxford		WOMAC		HAAS
TKA Group	BMI 31-35	BMI> 35	BMI31-35	BMI> 35	BMI 31-35	BMI> 35
Difference in mean score of ≤30 BMI group compared to higher BMI groups	1.59	2.57	1.5	3.75	0.43	0.85
95% Confidence interval	0.16 - 3.02	0.87 - 4.27	-1.29 - 4.29	0.37 - 7.13	-0.03 - 0.89	0.29 - 1.41
P value	0.029	0.0032	0.2916	0.0298	0.0641	0.003
UKA Group	Oxford
UKA Group	BMI31-35	BMI> 35
Difference in mean score of ≤30 BMI group compared to higher BMI groups	1.97	4.59
95% Confidence interval	-0.01 - 3.95	1.76 - 7.42
P value	0.0511	0.0017