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Spitzer A, Gorab R, Barrett W, Nassif N, Hunter M, Leslie I, Lesko J, Dalury D. Robotic-assisted total knee arthroplasty reduces soft-tissue releases which improves functional outcomes: A retrospective study. Knee 2024; 49:52-61. [PMID: 38848658 DOI: 10.1016/j.knee.2024.05.008] [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] [Received: 08/11/2023] [Revised: 01/03/2024] [Accepted: 05/18/2024] [Indexed: 06/09/2024]
Abstract
BACKGROUND There is increasing use of Robotic-Assisted (RA) and personalized alignment techniques in total knee arthroplasty (TKA). The hypothesis of this study was that RA TKA would result in fewer soft-tissue releases, and that fewer soft-tissue releases would be associated with improved clinical outcomes. METHODS A retrospective review of an internal company registry was conducted for all primary TKAs performed from Jan 1, 2014, through a database extract date of Nov 4, 2022. These were grouped by whether there was an intentional soft-tissue release performed (STR) during the surgery or not (NSTR) and whether RA was utilized. The incidence of STR was compared between RA-TKAs and those performed with manual instrumentation. Knee Society Score (KSS) and Knee Society Function Scores (KSFS) were collected at 6 months, 1 year and 2 years. Kaplan-Meier survivorship was performed. RESULTS The incidence of STR was significantly lower for RA vs. Manual (43.81% Vs 86.62%, p < 0.0001). The TKAs with NSTR had higher KSFS compared to those with STR at 6 months (84.73 Vs. 77.51, p < 0.0001), 1 year (89.87 Vs. 83.54, p < 0.0001) and 2 years (90.09 Vs. 82.65, p < 0.0001). There was no difference in survivorship, or KSS at any time point. However, the NSTR group had improved KSS pain sub score at 2 years. CONCLUSION The results of this observational, retrospective analysis found that the incidence of soft-tissue release was lower with RA-TKA. Further, regardless of if RA was used, avoiding releases was associated with improved KSFS and KSS pain scores through 2 years post-operatively.
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Fary C, Cholewa J, Ren AN, Abshagen S, Anderson MB, Tripuraneni K. Multicenter, prospective cohort study: immediate postoperative gains in active range of motion following robotic-assisted total knee replacement compared to a propensity-matched control using manual instrumentation. ARTHROPLASTY 2023; 5:62. [PMID: 38044446 PMCID: PMC10694935 DOI: 10.1186/s42836-023-00216-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/27/2023] [Indexed: 12/05/2023] Open
Abstract
BACKGROUND Range of motion (ROM) following total knee replacement (TKR) has been associated with patient satisfaction and knee function, and is also an early indicator of a successful procedure. Robotic-assisted TKR (raTKR) is considered to reproduce more precise resections, and, as a result, may be associated with improved early patient satisfaction compared to manual TKR (mTKR). The purpose of this study was to evaluate the early postoperative active ROM (aROM) between raTKR and mTKR. METHODS A total of 216 mTKR patients were propensity-matched, in terms of age, gender, comorbidities, and BMI, to 216 raTKR cases. Intraoperative and immediate postoperative adverse events were collected. Knee flexion and extension aROM were measured preoperatively and at one- and three months after operation. RESULTS Changes in flexion aROM were significantly greater in raTKR vs. mTKR at one- (6.9°, 95% CI: 3.5, 10.4°) and three months (4.9°, 95% CI: 2.1, 7.7°). Flexion aROM was greater at three postoperative months compared to preoperative aROM only in the raTKR group, and raTKR patients had higher odds of achieving ≥ 90° of flexion at one month after operation (OR: 2.15, 95% CI: 1.16, 3.99). There were no significant differences between groups in intraoperative (P > 0.999) or postoperative adverse events. CONCLUSIONS Compared with mTKR, raTKR resulted in less loss of aROM immediately after operation and a faster recovery of aROM within three months after operation. TRIAL REGISTRATION Clinicaltrials.gov (NCT# 03737149).
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Affiliation(s)
- Camdon Fary
- Epworth Foundation, Richmond, VIC, 3121, Australia
- Department of Orthopaedics, Western Hospital, Melbourne, 3011, Australia
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Karasavvidis T, Pagan Moldenhauer CA, Lustig S, Vigdorchik JM, Hirschmann MT. Definitions and consequences of current alignment techniques and phenotypes in total knee arthroplasty (TKA) - there is no winner yet. J Exp Orthop 2023; 10:120. [PMID: 37991599 PMCID: PMC10665290 DOI: 10.1186/s40634-023-00697-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 11/16/2023] [Indexed: 11/23/2023] Open
Abstract
Dissatisfaction following total knee arthroplasty (TKA) has been extensively documented and it was attributed to numerous factors. In recent years, significant focus has been directed towards implant alignment and stability as potential causes and solutions to this issue. Surgeons are now exploring a more personalized approach to TKA, recognizing the importance of thoroughly understanding each individual patient's anatomy and functional morphology. A more comprehensive preoperative analysis of alignment and knee morphology is essential to address the unresolved questions in knee arthroplasty effectively. The crucial task of determining the most appropriate alignment strategy for each patient arises, given the substantial variability in bone resection resulting from the interplay of phenotype and the alignment strategy chosen. This review aims to comprehensively present the definitions of different alignment techniques in all planes and discuss the consequences dependent on knee phenotypes.Level of evidence V.
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Affiliation(s)
- Theofilos Karasavvidis
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.
| | - Cale A Pagan Moldenhauer
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Sébastien Lustig
- Department of Orthopaedic Surgery and Sports Medicine, Croix-Rousse Hospital, Lyon, 69004, France
| | - Jonathan M Vigdorchik
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Michael T Hirschmann
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland, Bruderholz, CH-4101, Switzerland
- Department of Clinical Research, Research Group Michael T. Hirschmann, Regenerative Medicine & Biomechanics, University of Basel, Basel, CH-4001, Switzerland
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Winnock de Grave P, Van Criekinge T, Luyckx T, Moreels R, Gunst P, Claeys K. Restoration of the native tibial joint line obliquity in total knee arthroplasty with inverse kinematic alignment does not increase knee adduction moments. Knee Surg Sports Traumatol Arthrosc 2023; 31:4692-4704. [PMID: 37311955 DOI: 10.1007/s00167-023-07464-2] [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] [Received: 01/07/2023] [Accepted: 05/20/2023] [Indexed: 06/15/2023]
Abstract
PURPOSE Patient-specific alignment in total knee arthroplasty (TKA) has shown promising patient-reported outcome measures; however, the clinical and biomechanical effects of restoring the native knee anatomy remain debated. The purpose of this study was to compare the gait pattern between a mechanically aligned TKA cohort (adjusted mechanical alignment-aMA) and a patient-specific alignment TKA cohort (inverse kinematic alignment-iKA). METHODS At two years postoperatively, the aMA and iKA groups, each with 15 patients, were analyzed in a retrospective case-control study. All patients underwent TKA with robotic assistance (Mako, Stryker) through an identical perioperative protocol. The patients' demographics were identical. The control group comprised 15 healthy participants matched for age and gender. Gait analysis was performed with a 3D motion capture system (VICON). Data collection was conducted by a blinded investigator. The primary outcomes were knee flexion during walking, knee adduction moment during walking and spatiotemporal parameters (STPs). The secondary outcomes were the Oxford Knee Score (OKS) and Forgotten Joint Score (FJS). RESULTS During walking, the maximum knee flexion did not differ between the iKA group (53.0°) and the control group (55.1°), whereas the aMA group showed lower amplitudes of sagittal motion (47.4°). In addition, the native limb alignment in the iKA group was better restored, and although more in varus, the knee adduction moments in the iKA group were not increased (225 N mm/kg) compared to aMA group (276 N mm/kg). No significant differences in STPs were observed between patients receiving iKA and healthy controls. Six of 7 STPs differed significantly between patients receiving aMA and healthy controls. The OKS was significantly better in patients receiving iKA than aMA: 45.4 vs. 40.9; p = 0.05. The FJS was significantly better in patients receiving iKA than aMA: 84.8 vs. 55.5; p = 0.002. CONCLUSION At two years postoperatively, the gait pattern showed greater resemblance to that in healthy controls in patients receiving iKA rather than aMA. The restoration of the native coronal limb alignment does not lead to increased knee adduction moments due to the restoration of the native tibial joint line obliquity. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Philip Winnock de Grave
- Department Rehabilitation Sciences, KU Leuven, Brugge, Belgium.
- Department Orthopaedic Surgery, AZ Delta Roeselare, Brugsesteenweg 90, 8800, Roeselare, Belgium.
| | | | - Thomas Luyckx
- Department Orthopaedic Surgery, AZ Delta Roeselare, Brugsesteenweg 90, 8800, Roeselare, Belgium
- Department Orthopaedic Surgery, UZ Leuven, Louvain, Belgium
| | - Robin Moreels
- Department Orthopaedic Surgery, AZ Delta Roeselare, Brugsesteenweg 90, 8800, Roeselare, Belgium
- Department Orthopaedic Surgery, UZ Gent, Ghent, Belgium
| | - Paul Gunst
- Department Orthopaedic Surgery, AZ Delta Roeselare, Brugsesteenweg 90, 8800, Roeselare, Belgium
| | - Kurt Claeys
- Department Rehabilitation Sciences, KU Leuven, Brugge, Belgium
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Fozo ZA, Ghazal AH, Hesham Gamal M, Matar SG, Kamal I, Ragab KM. A Systematic Review and Meta-Analysis of Conventional Versus Robotic-Assisted Total Knee Arthroplasty. Cureus 2023; 15:e46845. [PMID: 37869051 PMCID: PMC10589058 DOI: 10.7759/cureus.46845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2023] [Indexed: 10/24/2023] Open
Abstract
This study aims to compare the outcomes and advantages of total knee arthroplasty (TKA) performed using conventional surgical techniques with those conducted using robotic-assisted methods in terms of operation time, Oxford knee score, range of motion, tourniquet time, and Western Ontario and McMaster Universities Arthritis index. We performed a literature search through five databases, namely, PubMed, Cochrane Central, Scopus, Embase, and Web of Science, from inception until July 3, 2023. Randomized clinical trials (RCTs) and cohorts comparing conventional TKA with robotic-assisted TKA were included. The risk of bias of the included RCTs was determined using the Cochrane risk of bias tool and the National Institutes of Health tool for cohort studies. We conducted a meta-analysis using Review Manager 5.4. To analyze continuous data, we calculated the mean difference (MD) along with its corresponding 95% confidence interval (CI). By synthesizing data from a comprehensive analysis, the study unveiled noteworthy distinctions between robotic-assisted arthroplasty and conventional arthroplasty across critical parameters. First, a substantial alteration in the hip-knee-ankle (HKA) angle was observed, with the robotic-assisted approach demonstrating a significant difference (MD = 0.84, 95% CI = 0.25-1.43, p = 0.005). Second, in terms of operative time, a notable reduction in surgical duration was noted with conventional TKA (MD = 16.85, 95% CI = 8.08-25.63, p = 0.0002). The assessment of tourniquet time exhibited a significantly longer duration for robotic-assisted arthroplasty (MD = 35.70, 95% CI = 27.80-43.61, p < 0.001). Our findings indicate that conventional TKA outperforms robotic-assisted TKA, primarily due to its shorter operative and tourniquet times, along with a more favorable change in the HKA angle. However, it is worth noting that robotic-assisted TKA showed a slight advantage in pain outcomes, although this advantage was not statistically significant. To gain a more comprehensive understanding, we recommend conducting a large-scale randomized controlled trial that directly compares both TKA methods. This trial should evaluate costs and long-term outcomes while ensuring consistent follow-up durations among studies. Such an approach would greatly assist orthopedic decision-making and contribute to improved TKA outcomes.
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Affiliation(s)
| | - Ahmed Hussein Ghazal
- Orthopaedics, Northwick Park Hospital, London North West University Healthcare NHS Trust, Harrow, GBR
| | - Mohamed Hesham Gamal
- Pharmacology and Therapeutics, Faculty of Pharmacy, Tanta University, Tanta, EGY
| | | | - Ibrahim Kamal
- General Medicine, Al-Azhar University, Alexandria, EGY
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Karasavvidis T, Pagan Moldenhauer CA, Haddad FS, Hirschmann MT, Pagnano MW, Vigdorchik JM. Current Concepts in Alignment in Total Knee Arthroplasty. J Arthroplasty 2023; 38:S29-S37. [PMID: 36773657 DOI: 10.1016/j.arth.2023.01.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/24/2023] [Accepted: 01/31/2023] [Indexed: 02/13/2023] Open
Abstract
BACKGROUND In an effort to increase satisfaction among total knee arthroplasty (TKA) patients, emphasis has been placed on implant positioning and limb alignment. Traditionally, the aim for TKA has been to achieve a neutral mechanical alignment (MA) to maximize implant longevity. However, with the recent spike in interest in individualized alignment techniques and with the advent of new technologies, surgeons are slowly evolving away from classical MA. METHODS This review elucidates the differences in alignment techniques for TKA, describes the concept of knee phenotypes, summarizes comparative studies between MA and individualized alignment, and provides a simple way to incorporate the latter into surgeons' practice. RESULTS In order to manage patients by applying these strategies in day-to-day practice, a basic understanding of the aforementioned concepts is essential. Transition to an individualized alignment technique should be done gradually with caution in a stepwise approach. CONCLUSION Alignment and implant positioning are now at the heart of the debate and surgeons are investigating a more personalized approach to TKA.
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Affiliation(s)
- Theofilos Karasavvidis
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Cale A Pagan Moldenhauer
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Fares S Haddad
- Department of Trauma and Orthopaedic Surgery, University College London Hospital, London
| | - Michael T Hirschmann
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland, Bruderholz, Switzerland
| | - Mark W Pagnano
- Deparment of Orthopaedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Jonathan M Vigdorchik
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
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Riantho A, Butarbutar JCP, Fidiasrianto K, Elson E, Irvan I, Haryono H, Prasetio JN. Radiographic Outcomes of Robot-Assisted Versus Conventional Total Knee Arthroplasty: A Systematic Review and Meta-Analysis of Randomized Clinical Trials. JB JS Open Access 2023; 8:JBJSOA-D-23-00010. [PMID: 37197698 PMCID: PMC10184987 DOI: 10.2106/jbjs.oa.23.00010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/19/2023] Open
Abstract
Total knee arthroplasty (TKA) has long been considered the definitive treatment for knee osteoarthritis. Although tremendous improvements have been made in surgical techniques for conventional TKA, a substantial dissatisfaction rate among patients has persisted because of moderate-to-severe pain and stiffness following TKA. Robot-assisted TKA was developed as an alternative to conventional TKA with the goal of improving operative precision and producing better clinical outcomes with minimal postoperative complications. The aim of this study was to compare the radiographic outcomes, duration of surgery, and complication rate between robot-assisted TKA and conventional TKA. Methods We conducted relevant literature searches of Medline, Scopus, ClinicalTrials.gov, and the Cochrane Library databases with use of specific keywords. The outcomes for continuous variables were pooled into mean differences, whereas the outcomes for dichotomous variables were pooled into odds ratios with 95% confidence intervals with use of random-effects models. Results A total of 12 randomized clinical trials were included. Our pooled analysis revealed that robot-assisted TKA was associated with fewer outliers in the hip-knee-ankle (HKA) angle (p < 0.0001), femoral component (coronal) angle (p = 0.0006), femoral component (sagittal) angle (p = 0.009), tibial component (coronal) angle (p = 0.05), and tibial component (sagittal) angle (p = 0.01) when compared with conventional TKA. The postoperative HKA angle was also significantly more neutral in the robot-assisted TKA group (mean difference, -0.77°; p < 0.0001). However, the complication rate did not differ significantly between the 2 groups. Conclusions Robot-assisted TKA may produce more accurate placement of the prosthetic component and better joint alignment accuracy than conventional TKA as shown by fewer outliers in several joint angles. Level of Evidence Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Albert Riantho
- Faculty of Medicine, Universitas Pelita Harapan, Tangerang, Indonesia
- Department of Orthopaedics and Traumatology, Siloam Hospitals Lippo Village, Tangerang, Indonesia
| | - John Christian Parsaoran Butarbutar
- Faculty of Medicine, Universitas Pelita Harapan, Tangerang, Indonesia
- Department of Orthopaedics and Traumatology, Siloam Hospitals Lippo Village, Tangerang, Indonesia
- Email for corresponding author:
| | - Kevin Fidiasrianto
- Faculty of Medicine, Universitas Pelita Harapan, Tangerang, Indonesia
- Department of Orthopaedics and Traumatology, Siloam Hospitals Lippo Village, Tangerang, Indonesia
| | - Elson Elson
- Faculty of Medicine, Universitas Pelita Harapan, Tangerang, Indonesia
- Department of Orthopaedics and Traumatology, Siloam Hospitals Lippo Village, Tangerang, Indonesia
| | - Irvan Irvan
- Faculty of Medicine, Universitas Pelita Harapan, Tangerang, Indonesia
- Department of Orthopaedics and Traumatology, Siloam Hospitals Lippo Village, Tangerang, Indonesia
| | - Handy Haryono
- Department of Orthopaedics and Traumatology, Siloam Hospitals Lippo Village, Tangerang, Indonesia
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Orsi AD, Wakelin E, Plaskos C, McMahon S, Coffey S. Restricted Inverse Kinematic Alignment Better Restores the Native Joint Line Orientation While Achieving Similar Balance, Laxity, and Arithmetic Hip-Knee-Ankle Angle to Gap Balancing Total Knee Arthroplasty. Arthroplast Today 2023; 19:101090. [PMID: 36688096 PMCID: PMC9851873 DOI: 10.1016/j.artd.2022.101090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 11/29/2022] [Accepted: 12/17/2022] [Indexed: 01/17/2023] Open
Abstract
Background Both restricted inverse kinematic alignment (iKA) and gap balancing aim for a balanced total knee arthroplasty by adjusting femoral component position based on ligamentous gaps. However, iKA targets a native tibial joint line vs resecting perpendicular to the mechanical axis. This study compares how these 2 techniques impact the balance and laxity throughout flexion and joint line obliquity (JLO), arithmetic hip-knee-ankle angle (aHKA), and the coronal plane alignment of the knee (CPAK). Methods Two surgeons performed 75 robot-assisted iKA total knee arthroplasties. A digital joint tensioner collected laxity data throughout flexion before femoral resection. The femoral component position was determined using predictive gap-planning to optimize the balance throughout flexion. Planned gap balancing (pGB) simulations were performed for each case using neutral tibial resections. Mediolateral balance, laxity, and CPAK were compared among pGB, planned iKA (piKA), and final iKA. Results Both piKA and pGB had similar mediolateral balance and laxity, with mean differences <0.4 mm. piKA had a lower mean absolute difference from native JLO than pGB (3 ± 2° vs 7 ± 4°, P < .001). aHKA was similar (P > .05) between pGB and piKA. piKA recreated a more native CPAK distribution, with types I-V being the most common ones, while most pGB knees were of type V, VII, and III. Final iKA and piKA had similar mediolateral balance and laxity, with a root-mean-square error <1.4 mm. Conclusions Although balance, laxity, and aHKA were similar between piKA and pGB, piKA better restored native JLO and CPAK phenotypes. The neutral tibial resection moved most pGB knees into types V, VII, and III. Surgeons should appreciate how the alignment strategy affects knee phenotypes.
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Affiliation(s)
- Alexander D. Orsi
- Corin Clinical Research, Raynham, MA, USA,Corresponding author. Corin Clinical Research, 480 Paramount Drive, Raynham MA, 02767, USA. Tel.: +1 617 877 1474.
| | | | | | - Stephen McMahon
- Department of Orthopaedics, The Avenue Hospital, Windsor, Victoria, Australia
| | - Simon Coffey
- Department of Orthopaedics, Nepean Hospital, Penrith, New South Wales, Australia
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