How are those “lost to follow-up” patients really doing? A compliance comparison in arthroplasty patients

Table 2 Comparison of active follow-up in the office and non-compliant with office follow-up visits by operative procedure n (%)

Groups	MOMHR	Primary BKA	Primary THA	Primary TKA	Primary UKA	Revision THA	Revision TKA	Total
OFU	94 (21)	12 (3)	148 (34)	130 (29)	23 (5)	28 (6)	9 (2)	444 (100)
NFU	36 (25)	2 (1)	52 (36)	31 (22)	10 (7)	9 (6)	4 (3)	144 (100)
Total	130	14	200	161	33	37	13	588

MOMHR: Metal-on-metal hip resurfacings; UKA: Unicompartmental knee arthroplasties; OFU: Active follow-up in the office; NFU: Non-compliant with office follow-up visits.