Early Economic Evaluation Demonstrates That Noncomputerized Tomography Robotic-Assisted Surgery Is Cost-Effective in Patients Undergoing Unicompartmental Knee Arthroplasty at High-Volume Orthopaedic Centres

Table 1

Model input parameters.

Revision data at 5 years converted to annual probabilities
Age	Mean	95% LCI	95% UCI	Reference
65	1.19%	1.15%	1.22%	[18]
Rerevision all ages
All	2.05%	1.89%	2.21%	[18]
Robotic-assisted UKA effectiveness
	Hazard rate	95% LCI	95% UCI
Revision	0.2000	0.1700	0.2400	[7]
Mortality following surgical procedure
Age	Mean	95% LCI	95% UCI
65	4.44%	4.42%	4.47%	[18]
All-cause mortality
Age 65	4.9%			[22]
Quality of life weights
Postsurgery	0.750	0.600	0.938	[19]
Revision	0.565	0.452	0.706	[19]
Rerevision	0.4630	0.370	0.579	[19]
Mortality	0.000	0.000	0.000	[19]
Costs GBP £2018/19
Revision/rerevision	£10,390	£7,793	£12,988	[23]
Arthroplasty	£6,267	£4,700	£7,833	[23]
Rehabilitation	£289	£217	£361	[23]
Consumables (burr, drape, discs)	£260	£195	£325	Manufacturer
Robotics costs	£358,000	£286,400	£429,600	Manufacturer
Annual service contract (year 2–5)	£21,500			Manufacturer

NJR = National Joint Registry of England and Wales; LCI = lower value of the 95% confidence interval; UCI = upper value of the 95% confidence interval; assumed ±20%.