Christopher W Jones1, Hans Jacobs2, Sarah Shumborski3, Simon Talbot4, Andrew Redgment5, Roger Brighton6, William L Walter7. 1. Fiona Stanley Hospital Group & Orthopaedics WA, Perth, Australia; Curtin University, Perth, Australia; University of Sydney, Sydney, Australia. 2. Steve Biko Academic Hospital, The University of Pretoria, Pretoria, South Africa. 3. Mater Hospital, Sydney, Australia. 4. Orthopaedic Department, Western Health, Melbourne, Australia. 5. Wagga Private Hospital, Wagga, Australia. 6. Westmead Private Hospital, Sydney, Australia. 7. The University of Sydney & Northern Local Area Health District (Royal North Shore Hospital), Sydney, Australia.
Abstract
BACKGROUND: Joint stability is one of the goals of any joint replacement. The contribution of prosthesis design to sagittal stability in total knee arthroplasty (TKA) has emerged as an area of interest. The purpose of this study was to evaluate the sagittal stability of four prosthesis types and determine the effect on patient reported outcome measures (PROMs). METHODS: A matched-cohort cross-sectional study was performed on 60 patients after TKA at 1-year follow-up. Three surgeons performed 10 medially stabilized (MS) TKA and 10 non-MS TKA. Sagittal stability was assessed by a blinded observer using a KT-1000 arthrometer, Lachman's test, and the anterior drawer test. PROMs (Oxford, Knee Injury and Osteoarthritis Outcome Score, Western Ontario and McMaster Universities Osteoarthritis Index, Forgotten joint score) and visual analog scale assessed function and satisfaction. RESULTS: MS TKA had significantly decreased translation on KT-1000 and improved stability compared with non-MS TKA (P < .05). Increased PROMs were demonstrated in the MS TKA group compared with the non-MS TKA group (P < .05). When divided based on objective stability, regardless of the prosthesis type, patients with a stable knee had superior PROMs (P < .05), particularly in sport-related questions. CONCLUSION: The MS TKA had significantly greater sagittal stability, improved PROMs, and satisfaction compared with non-MS TKA. Independent of prosthesis design, patients with greater sagittal stability demonstrated improved PROMs.
BACKGROUND: Joint stability is one of the goals of any joint replacement. The contribution of prosthesis design to sagittal stability in total knee arthroplasty (TKA) has emerged as an area of interest. The purpose of this study was to evaluate the sagittal stability of four prosthesis types and determine the effect on patient reported outcome measures (PROMs). METHODS: A matched-cohort cross-sectional study was performed on 60 patients after TKA at 1-year follow-up. Three surgeons performed 10 medially stabilized (MS) TKA and 10 non-MS TKA. Sagittal stability was assessed by a blinded observer using a KT-1000 arthrometer, Lachman's test, and the anterior drawer test. PROMs (Oxford, Knee Injury and Osteoarthritis Outcome Score, Western Ontario and McMaster Universities Osteoarthritis Index, Forgotten joint score) and visual analog scale assessed function and satisfaction. RESULTS: MS TKA had significantly decreased translation on KT-1000 and improved stability compared with non-MS TKA (P < .05). Increased PROMs were demonstrated in the MS TKA group compared with the non-MS TKA group (P < .05). When divided based on objective stability, regardless of the prosthesis type, patients with a stable knee had superior PROMs (P < .05), particularly in sport-related questions. CONCLUSION: The MS TKA had significantly greater sagittal stability, improved PROMs, and satisfaction compared with non-MS TKA. Independent of prosthesis design, patients with greater sagittal stability demonstrated improved PROMs.
Authors: Frank Sebastian Fröschen; Thomas Martin Randau; Sebastian Gottfried Walter; Franz Dally; Dieter Christian Wirtz; Sascha Gravius Journal: Oper Orthop Traumatol Date: 2022-04-01 Impact factor: 1.286
Authors: John M Keggi; Edgar A Wakelin; Jan A Koenig; Jeffrey M Lawrence; Amber L Randall; Corey E Ponder; Jeffrey H DeClaire; Sami Shalhoub; Stephen Lyman; Christopher Plaskos Journal: Arch Orthop Trauma Surg Date: 2021-07-13 Impact factor: 3.067
Authors: Giorgio Cacciola; Fabio Mancino; Federico De Meo; Vincenzo Di Matteo; Peter K Sculco; Pietro Cavaliere; Giulio Maccauro; Ivan De Martino Journal: J Orthop Date: 2021-02-22