Table 1.

Model parameters from literature review and pooled results

Description	Value	Range	References
Probability of death
Baseline probability death for age, gender, race	2004 US life tables	2004 US life tables	2
Probability of death within 30 days of ankle surgery	0.02%	–	28
Probability of major short-term complications
TAA	20%	5%–25%	16, 20, 25, 28
TAA revision	40%	–	Estimated
Ankle fusion	7%	0.5%–10%	13, 20, 25
Revision ankle fusion	14%	–	Estimated
Yearly rates – ipsilateral arthritis
After TAA	1.5%	0%–6%	16, 25, 28
After ankle fusion	4%	0%–6%	5, 25
Yearly rates – revision surgery
TAA failure	see Table 2	2%–20%	1, 8, 13–16, 20, 22, 25, 28
TAA revision failure	see Table 2	–	Estimated
Ankle fusion failure	1%	1%–10%	25
Yearly rates – BKA
BKA after revision TAA	0.2%	0.2%–1%	13, 25
BKA after revision fusion	1%	0.2%–5%	13, 24

TAA = total ankle arthroplasty; BKA = below-knee amputation.