PMID- 32556437 OWN - NLM STAT- MEDLINE DCOM- 20210924 LR - 20210924 IS - 1433-7347 (Electronic) IS - 0942-2056 (Linking) VI - 29 IP - 10 DP - 2021 Oct TI - Similar postoperative outcomes after total knee arthroplasty with measured resection and gap balancing techniques using a contemporary knee system: a randomized controlled trial. PG - 3178-3185 LID - 10.1007/s00167-020-06103-4 [doi] AB - PURPOSE: The Attune(R) Knee System provides new instrumentation to achieve symmetric flexion/extension gaps in total knee arthroplasty (TKA). However, there is limited information on the optimal TKA technique using this system. The aim of this randomised controlled trial was to determine which surgical technique results in better postoperative clinical outcomes after TKA using the contemporary Attune((R)) Knee System: the measured resection or gap balancing technique. METHODS: A prospective randomized controlled trial was conducted with 100 patients undergoing TKA using measured resection (n = 50) or gap balancing (n = 50) technique. The measured femoral sizer was used in the measured resection group, while the balanced femoral sizer was used in the gap balancing group. Functional outcomes and quality of life were assessed preoperatively and at 6 months and 2 years post-surgery, using the Knee Society Function Score (KSFS), Knee Society Knee Score (KSKS), Oxford Knee Score (OKS), the Physical Component Score (PCS) and Mental Component Score (MCS) of Short-Form 36 (SF-36). Using weight-bearing coronal radiographs, the hip-knee-ankle angle (HKA), coronal femoral component angle (CFA), coronal tibial component angle (CTA) and joint line height were also evaluated for each patient. RESULTS: There were no significant differences in the functional scores or the proportion of patients from each group who were satisfied or had their expectations fulfilled at 6 months or 2 years post-surgery. There was also no significant difference in the number of patients who attained minimum clinically important difference (MCID) postoperatively between the groups. Postoperatively, there was no significant difference in the number of HKA outliers between the groups (p = 0.202). The postoperative CFA (p = 0.265) and CTA (p = 0.479) were similar between the groups. There was also no significant difference in the absolute change (p = 0.447) or proportion of outliers (p = 0.611) for joint line height between the groups. CONCLUSION: Both measured resection and gap balancing techniques resulted in comparable functional and quality of life outcomes up to 2 years post-surgery. Both techniques appear to be equally effective in achieving excellent outcomes with the Attune((R)) Knee System. LEVEL OF EVIDENCE: I. CI - (c) 2020. European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA). FAU - Moorthy, Vikaesh AU - Moorthy V AUID- ORCID: 0000-0002-5503-5687 AD - Yong Loo Lin School of Medicine, National University Singapore, 1E Kent Ridge Road, NUHS Tower Block, Level 11, Singapore, 119228, Singapore. vikaeshmoorthy@yahoo.com. FAU - Lai, Mun Chun AU - Lai MC AD - Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore. FAU - Liow, Ming Han Lincoln AU - Liow MHL AD - Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore. FAU - Chen, Jerry Yongqiang AU - Chen JY AD - Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore. FAU - Pang, Hee Nee AU - Pang HN AD - Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore. FAU - Chia, Shi-Lu AU - Chia SL AD - Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore. FAU - Lo, Ngai Nung AU - Lo NN AD - Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore. FAU - Yeo, Seng Jin AU - Yeo SJ AD - Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore. LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20200615 PL - Germany TA - Knee Surg Sports Traumatol Arthrosc JT - Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA JID - 9314730 SB - IM MH - *Arthroplasty, Replacement, Knee MH - Humans MH - Knee Joint/surgery MH - *Knee Prosthesis MH - Prospective Studies MH - Quality of Life OTO - NOTNLM OT - Knee OT - Knee replacement OT - Quality of life OT - Randomized controlled trial OT - Total knee arthroplasty EDAT- 2020/06/20 06:00 MHDA- 2021/09/25 06:00 CRDT- 2020/06/20 06:00 PHST- 2020/05/13 00:00 [received] PHST- 2020/06/11 00:00 [accepted] PHST- 2020/06/20 06:00 [pubmed] PHST- 2021/09/25 06:00 [medline] PHST- 2020/06/20 06:00 [entrez] AID - 10.1007/s00167-020-06103-4 [pii] AID - 10.1007/s00167-020-06103-4 [doi] PST - ppublish SO - Knee Surg Sports Traumatol Arthrosc. 2021 Oct;29(10):3178-3185. doi: 10.1007/s00167-020-06103-4. Epub 2020 Jun 15.