Years of Experience	18 Months Before Introduction (7/1/2016-12/31/2017)		18 Months After Introduction (4/1/2018-9/30/2019)
		mUKA	mTKA	mUKA	mTKA	rUKA	rTKA	% Increase
Surgeon A	17	13	106	2	42	26	77	—
Surgeon B	25	9	188	0	143	16	99
Surgeon C	6	16	200	1	124	52	62
Surgeon D	23	0	63	0	95	13	9
Total UKA volume		38	—	3	—	107	—	189.50
Total TKA volume		—	557	—	404	—	247	16.90
Total KA volume		595			761			27.90
TKA-UKA ratio		557:38 (15:1)			651:110 (6:1)