b'Scientific Session Abstracts SUNDAY APRIL 21, 2024 Appendix: 12-Month Survival to BKA or Any Amputation CalculationsDate of anyAnyBKA LimbPatientGSVA12-months amputationAmputationDate ofBKA within 12 # # Date post-GS VA (BKA, toe,within 12months?transmetatarsal) months?1 10/319 10/2/20 4/27/20 Yes NIA No2 1 10/24/19 10/23/20 4/27/20 Yes NIA No3 2 12/19/19 12/18/20 9/2/20 Yes NIA No4 3 1/9/20 1/8/21 NIA No NIA No6 4 3/26/20 3/26/21 4/16/20 Yes NIA No9 5 12/3/21 12/3/22 NIA No NIA No10 6 9116121 9116122 NIA No NIA NoN/A; last follow-up 8 8 3/25/21 3/25/22 5/24/21 Yes was 12 monthsNopost-BKA5 7 1/23/20 1/22/21 1/28/20 Yes 2/20/20 Yes7 4 4/12/22 4/12/23 4/30/22 Yes 5/26/22 Yes11 6 3/21/23 3/20/24 4/13/23 Yes 4/19/23 Yes12 9 9/20/22 9/20/23 10/14/22 Yes 11/2/22 Yes 1310 3/4/22 3/4/23 3/8/22 Yes 3/11/22 YesTotal "Yes" 10 Total "Yes" 5Percent of all limbs withPercent of all limbs amputation with 12 months76.9 % with BKA withing41.7%(= Total "Yes"/13) 12 months (= Total "Yes"/12)Amputation-free survival, Amputation-free any amputation 23.1% survival, BKA58.3%(= Total "Yes"/13) (100% -(Total amputations/12))Patient #8 was not included in this calculation as they did not have a BKA but did not have 12 months of follow-up42 NDANNUAL MEETING|APRIL 1921, 2024|OCEANSIDE, CA 109'