PMID- 32660629 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220415 IS - 2234-0726 (Print) IS - 2234-2451 (Electronic) IS - 2234-0726 (Linking) VI - 32 IP - 1 DP - 2020 Jun 17 TI - Sex does not clinically influence the functional outcome of total knee arthroplasty but females have a lower rate of satisfaction with pain relief. PG - 32 LID - 10.1186/s43019-020-00048-1 [doi] LID - 32 AB - BACKGROUND: The aims were to assess whether sex had a clinically significant independent influence on the outcome of total knee arthroplasty (TKA) according to the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score, Short Form (SF-) 12 scores and patient satisfaction at 1 year. METHODS: A retrospective cohort of 3510 primary TKA were identified. Patient demographics, comorbidities, WOMAC and SF-12 scores were collected preoperatively and 1 year postoperatively. Patient satisfaction were assessed at 1 year. RESULTS: There were 1584 males and 1926 females. The preoperative WOMAC and SF-12 scores were significantly (p < 0.001) worse in females but were not greater than the minimal clinically important difference (MCID). When adjustments had been made for confounding differences, females showed a significantly greater improvement in their function (1.5 points, p = 0.03) and total (1.5 points, p = 0.03) WOMAC scores compared to males, but these were not greater than the MCID. When adjustments had been made for confounding differences, females were less likely to be satisfied with their pain relief (p = 0.03) relative to males. CONCLUSION: Sex does not clinically influence the knee specific outcome (WOMAC) or overall generic (SF-12) health 1 year after TKA. However, satisfaction with pain relief after TKA was significantly less likely in female patients. LEVEL OF EVIDENCE II: Prognostic retrospective cohort study. FAU - Clement, N D AU - Clement ND AUID- ORCID: 0000-0001-8792-0659 AD - Department of Orthopaedics, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Freeman Road, High Heaton, Newcastle upon Tyne, NE7 7DN, UK. nickclement@doctors.org.uk. FAU - Weir, D AU - Weir D AD - Department of Orthopaedics, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Freeman Road, High Heaton, Newcastle upon Tyne, NE7 7DN, UK. FAU - Holland, J AU - Holland J AD - Department of Orthopaedics, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Freeman Road, High Heaton, Newcastle upon Tyne, NE7 7DN, UK. FAU - Deehan, D J AU - Deehan DJ AD - Department of Orthopaedics, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Freeman Road, High Heaton, Newcastle upon Tyne, NE7 7DN, UK. LA - eng PT - Journal Article DEP - 20200617 PL - England TA - Knee Surg Relat Res JT - Knee surgery & related research JID - 101575761 PMC - PMC7301486 OTO - NOTNLM OT - Outcome OT - Satisfaction OT - Sex OT - Total knee arthroplasty OT - WOMAC COIS- David Weir is an educational lecturer for Stryker. Jim Holland is an educational lecturer for Zimmer. The other authors declare that they have no competing interests. EDAT- 2020/07/15 06:00 MHDA- 2020/07/15 06:01 PMCR- 2020/06/17 CRDT- 2020/07/15 06:00 PHST- 2020/02/12 00:00 [received] PHST- 2020/05/21 00:00 [accepted] PHST- 2020/07/15 06:00 [entrez] PHST- 2020/07/15 06:00 [pubmed] PHST- 2020/07/15 06:01 [medline] PHST- 2020/06/17 00:00 [pmc-release] AID - 10.1186/s43019-020-00048-1 [pii] AID - 48 [pii] AID - 10.1186/s43019-020-00048-1 [doi] PST - epublish SO - Knee Surg Relat Res. 2020 Jun 17;32(1):32. doi: 10.1186/s43019-020-00048-1.