Obesity and total ankle arthroplasty: Contraindication or consideration

Table 3 Revision rates and implant survival in patients undergoing total ankle replacement

Ref.	Revision rate			Survivorship
	Obese	Non-obese	P value	Obese	Non-obese	P value
Schipper et al[5], 2016	42.9%	31.3%	0.041	NS2	NS2	0.3
Barg et al[19], 2011	19.5%	-	NR	93%3	-	NR
Gross et al[20], 2016	4.1%	3.0%	0.861	NR	NR	NR
Bouchard et al[21], 2015	17.9%	8.4%	0.48	4.5 years4	4.6 years4	0.47
Cottom et al[13], 2019	0%	0%	-	NR	NR	NR
Kim et al[6], 2023	No association of BMI and implant failure		0.896	NR	NR	NR
Werner et al[12], 2015	Significantly increased risk for obese patients		0.0045	NR	NR	NR
Jennison et al[11], 2023	NR	NR	-	88.9%	94.0%	0.026

¹Adjusted odds ratio = 2.8, 95% confidence interval: 1.04-7.53.

²5 years of survivorship.

³At 6 years (95% confidence interval: 87.2%-94.3%).

⁴Mean operation-free survival time.

⁵Odds ratio =1.6, 95% confidence interval: 1.2-2.2.

⁶Hazard ratio = 1.76, 95% confidence interval: 1.09-2.85.

Values of follow-up are reported as percentages, years or months according to the original study. NR: Non-reported; NS: Non-significant; BMI: Body mass index.