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Jabbal M, Simpson AHR, Walmsley P. Mechanisms of bone loss in revision total knee arthroplasty and current treatment options. Orthop Rev (Pavia) 2023; 15:75359. [PMID: 37405274 PMCID: PMC10317505 DOI: 10.52965/001c.75359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/06/2023] Open
Abstract
Purpose Primary total knee arthroplasty (TKA) is an effective treatment which is increasing in use for both elderly and younger patients. With the overall increasing life span of the general population, the rate of revision TKA is projected to increase significantly over the coming decades. Analyses from the national joint registry of England and Wales support this prediction with an increase in primary TKA of 117% and an increase in revision TKA of 332% being forecast by 2030. Bone loss presents a challenge in revision TKA so an understanding of the aetiology and principles behind this is essential for the surgeon undertaking revision. The purpose of this article is to review the causes of bone loss in revision TKA, discuss the mechanisms of each cause and discuss the possible treatment options. Methods The Anderson Orthopaedic Research Institute (AORI) classification and zonal classification of bone loss are commonly used in assessing bone loss in pre-operative planning and will be used in this review. The recent literature was searched to find advantages and limitations of each commonly used method to address bone loss at revision TKA. Studies with the highest number or patients and longest follow-up period were selected as significant. Search terms were: "aetiology of bone loss", "revision total knee arthroplasty", "management of bone loss". Results Methods for managing bone loss have traditionally been cement augmentation, impaction bone grafting, bulk structural bone graft and stemmed implants with metal augments. No single technique was found to be superior. Megaprostheses have a role as a salvage procedure when the bone loss is deemed to be too significant for reconstruction. Metaphyseal cones and sleeves are a newer treatments with promising medium to long term outcomes. Conclusion Bone loss encountered at revision TKA presents a significant challenge. No single technique currently has clear superiority treatment should be based on a sound understanding of the underlying principles.
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Hiranaka T, Suda Y, Saitoh A, Koide M, Tanaka A, Arimoto A, Fujishiro T, Okamoto K. Infographic: Three key elements of kinematic alignment total knee arthroplasty for clarified understanding of its approaches. Bone Joint Res 2022; 11:226-228. [PMID: 35387499 PMCID: PMC9057519 DOI: 10.1302/2046-3758.114.bjr-2021-0543.r1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Takafumi Hiranaka
- Department of Orthopaedic Surgery and Joint Surgery Centre, Aijinkai Takatsuki General Hospital, Takatsuki, Japan
| | - Yoshihito Suda
- Department of Orthopaedic Surgery and Joint Surgery Centre, Aijinkai Takatsuki General Hospital, Takatsuki, Japan
| | - Akira Saitoh
- Department of Orthopaedic Surgery and Joint Surgery Centre, Aijinkai Takatsuki General Hospital, Takatsuki, Japan
| | - Motoki Koide
- Department of Orthopaedic Surgery and Joint Surgery Centre, Aijinkai Takatsuki General Hospital, Takatsuki, Japan
| | - Atsuki Tanaka
- Department of Orthopaedic Surgery and Joint Surgery Centre, Aijinkai Takatsuki General Hospital, Takatsuki, Japan
| | - Akihiko Arimoto
- Department of Orthopaedic Surgery and Joint Surgery Centre, Aijinkai Takatsuki General Hospital, Takatsuki, Japan
| | - Takaaki Fujishiro
- Department of Orthopaedic Surgery and Joint Surgery Centre, Aijinkai Takatsuki General Hospital, Takatsuki, Japan
| | - Koji Okamoto
- Department of Orthopaedic Surgery and Joint Surgery Centre, Aijinkai Takatsuki General Hospital, Takatsuki, Japan
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Zhang J, Ndou WS, Ng N, Gaston P, Simpson PM, Macpherson GJ, Patton JT, Clement ND. Robotic-arm assisted total knee arthroplasty is associated with improved accuracy and patient reported outcomes: a systematic review and meta-analysis. Knee Surg Sports Traumatol Arthrosc 2022; 30:2677-2695. [PMID: 33547914 PMCID: PMC9309123 DOI: 10.1007/s00167-021-06464-4] [Citation(s) in RCA: 80] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 01/18/2021] [Indexed: 12/28/2022]
Abstract
This systematic review and meta-analysis were conducted to compare the accuracy of component positioning, alignment and balancing techniques employed, patient-reported outcomes, and complications of robotic-arm assisted total knee arthroplasty (RATKA) with manual TKA (mTKA) and the associated learning curve. Searches of PubMed, Medline and Google Scholar were performed in October 2020 using PRISMA guidelines. Search terms included "robotic", "knee" and "arthroplasty". The criteria for inclusion were published clinical research articles reporting the learning curve for RATKA and those comparing the component position accuracy, alignment and balancing techniques, functional outcomes, or complications with mTKA. There were 198 articles identified, following full text screening, 16 studies satisfied the inclusion criteria and reported the learning curve of rTKA (n=5), component positioning accuracy (n=6), alignment and balancing techniques (n=7), functional outcomes (n=7), or complications (n=5). Two studies reported the learning curve using CUSUM analysis to establish an inflexion point for proficiency which ranged from 7 to 11 cases and there was no learning curve for component positioning accuracy. The meta-analysis showed a significantly lower difference between planned component position and implanted component position, and the spread was narrower for RATKA compared with the mTKA group (Femur coronal: mean 1.31, 95% confidence interval (CI) 1.08-1.55, p<0.00001; Tibia coronal: mean 1.56, 95% CI 1.32-1.81, p<0.00001). Three studies reported using different alignment and balancing techniques between mTKA and RATKA, two studies used the same for both group and two studies did not state the methods used in their RATKA groups. RATKA resulted in better Knee Society Score compared to mTKA in the short-to-mid-term follow up (95%CI [- 1.23, - 0.51], p=0.004). There was no difference in arthrofibrosis, superficial and deep infection, wound dehiscence, or overall complication rates. RATKA demonstrated improved accuracy of component positioning and patient-reported outcomes. The learning curve of RATKA for operating time was between 7 and 11 cases. Future well-powered studies on RATKAs should report on the knee alignment and balancing techniques utilised to enable better comparisons on which techniques maximise patient outcomes.Level of evidence III.
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Affiliation(s)
- Junren Zhang
- Department of Orthopedics and Trauma, The Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK.
| | - Wofhatwa Solomon Ndou
- Department of Orthopedics and Trauma, The Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
| | - Nathan Ng
- Department of Orthopedics and Trauma, The Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
| | - Paul Gaston
- Department of Orthopedics and Trauma, The Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
| | - Philip M Simpson
- Department of Orthopedics and Trauma, The Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
| | - Gavin J Macpherson
- Department of Orthopedics and Trauma, The Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
| | - James T Patton
- Department of Orthopedics and Trauma, The Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
| | - Nicholas D Clement
- Department of Orthopedics and Trauma, The Royal Infirmary of Edinburgh, Little France, Edinburgh, EH16 4SA, UK
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Hernández-Vaquero D. The alignment of the knee replacement. Old myths and new controversies. Rev Esp Cir Ortop Traumatol (Engl Ed) 2021. [DOI: 10.1016/j.recote.2021.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Hernández-Vaquero D. La alineación de la artroplastia de rodilla. Antiguos mitos y nuevas controversias. Rev Esp Cir Ortop Traumatol (Engl Ed) 2021. [DOI: 10.1016/j.recot.2021.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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