Cost-effectiveness analysis of Coblation versus mechanical shaver debridement in patients following knee chondroplasty

Table 3 Inputs and ranges for all parameters in the cost-effectiveness model at 4 year follow-up

	Base case^a	Range^b
	Base case^a	Low	High
Cumulative 4 year probabilities^a
Probability of treatment success
Coblation	0.86	0.79	0.93
MSD	0.52	0.28	0.76
Probability of revision (1-treatment success)
Coblation	0.14	0.07	0.21
MSD	0.48	0.24	0.72
Probability of revision procedures with Coblation
Osteotomy	0.50	0.25	0.75
Revision arthroscopy	0.25	0.13	0.38
Total knee replacement	0.25	0.13	0.38
Probability of revision procedure with MSD
Osteotomy	0.29	0.15	0.44
Revision arthroscopy	0.14	0.07	0.21
Total knee replacement	0.57	0.29	0.86
Number of physical therapy sessions used^b
Coblation	6.4	4.8	8.0
MSD	9.8	9.2	10.4
Costs, 2018 (US$)^c
Primary knee chondroplasty	3207
Physical therapy session	82	–	–
4 year revision procedures
Osteotomy	5855	–	–
Revision arthroscopy	2935	–	–
Total knee replacement	10,553	–	–

MSD mechanical shaver debridement
^aBased on published results of the randomized clinical trial [25]
^bBase case revision probabilities were varied by 50%, except for number of physical therapy sessions which were based on randomized clinical trial [5]
^cBased on 2018 US Medicare Physician Fee Schedule [27]

ISSN: 1478-7547