Article
Orthopedics
Philip Winnock de Grave, Thomas Luyckx, Tamaya Criekinge, Jacobus Hendrik Mueller, Britt Ollivier, Eduard Eecke, Sally LiArno, Ahmad Faizan, Kurt Claeys
Summary: The purpose was to determine the proportion of native non-arthritic knees that fit within the target zones of three different alignment techniques and estimate the adjustments needed to bring outlier knees within the target zones. The hypothesis was that iKA had a higher proportion of knees within its target zone compared to the other techniques.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Article
Orthopedics
Philip Winnock de Grave, Thomas Luyckx, Kurt Claeys, Thomas Tampere, Jonas Kellens, Jacobus Mueller, Paul Gunst
Summary: The purpose of this study was to compare the clinical outcomes of restricted inverse kinematic alignment (iKA) and adjusted mechanical alignment (aMA) techniques in robotic-assisted total knee arthroplasty (TKA). The results showed similar clinical outcomes between the two techniques at a 12-month follow-up, but the restricted iKA technique had better satisfaction and achieved higher OKS and satisfaction thresholds.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Article
Surgery
Lazaros Kostretzis, Gabriel Bouchard Roby, Sagi Martinov, Marc-Olivier Kiss, Janie Barry, Pascal-Andre Vendittoli
Summary: The study described the technique of performing TKA revision using the restricted KA protocol and reported outcomes. Results showed that the method is safe and effective in the mid-term, with only a small number of cases requiring re-revision.
FRONTIERS IN SURGERY
(2021)
Article
Orthopedics
Kai Zheng, Feng Zhu, Weicheng Zhang, Houyi Sun, Jun Zhou, Rongqun Li, Yaozeng Xu
Summary: The new alignment technique of arKA aims to treat severe varus deformity through balancing the extension and flexion gap, restoring the native pre-arthritic alignment, which may be a promising alignment strategy for severe varus deformity. Further studies and comparisons with other alignment techniques are needed to confirm its effectiveness.
ORTHOPAEDIC SURGERY
(2022)
Article
Orthopedics
Lars-Rene Tuecking, Peter Savov, Mats Zander, Dragan Jeremic, Henning Windhagen, Max Ettinger
Summary: The purpose of this study was to evaluate the differences in alignment parameters between kinematic alignment (KA) and functional alignment (FA) techniques, with a focus on the femoral joint line. The results showed that both techniques had similar accuracy in reconstructing the femoral joint line, but FA techniques were more effective in correcting the medial proximal tibial angle and the lateral femoral joint line.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Article
Orthopedics
Heiko Graichen, Verena Luderer, Marco Strauch, Michael T. Hirschmann, Wolfgang Scior
Summary: The study found that AMA can achieve the goals for leg alignment and gap balance in most cases, but some non-anatomical cuts may be needed to achieve the desired outcomes.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Article
Medicine, General & Internal
Constantin Dlaska, Petros Ismailidis, Kenji Doma, Benjamin Brandon, Matthew Wilkinson, Kaushik Hazratwala
Summary: This study describes a technique for femoral component rotation in total knee arthroplasty using a tibia-first, gap-balancing, functional alignment approach. The results show that this technique allows for appropriate femoral rotation without resulting in patellar maltracking.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Orthopedics
S. Abhari, T. M. Hsing, M. M. Malkani, A. F. Smith, L. S. Smith, M. A. Mont, A. L. Malkani
Summary: The study evaluated the clinical outcomes and patient satisfaction of TKA using the concept of restricted kinematic alignment, finding significantly better overall patient satisfaction and outcome scores in the kinematic group compared to a mechanical alignment group during a mean follow-up of 17 months. The most common complication in both groups was postoperative contracture, with a low incidence rate.
BONE & JOINT JOURNAL
(2021)
Article
Orthopedics
Stefano Marco Paolo Rossi, Francesco Benazzo
Summary: This paper describes the surgical technique of the ROSA Knee System, focusing on its potential alignment options and ligament balancing technique. The current literature on the system is also analyzed. Preliminary results show promising accuracy and clinical outcomes.
INTERNATIONAL ORTHOPAEDICS
(2023)
Article
Health Care Sciences & Services
Kim Huber, Bernhard Christen, Sarah Calliess, Tilman Calliess
Summary: Image-based robotic assistance is a promising tool for individualizing alignment in total knee arthroplasty. The study evaluated the applicability of kinematic alignment (KA) and restricted KA (rKA) in different knee phenotypes, showing significant differences in knee morphotypes and better outcomes in terms of knee balance and joint reconstruction for KA compared to rKA.
JOURNAL OF PERSONALIZED MEDICINE
(2021)
Article
Surgery
Yuqi Pan, Bowei Jiang, Yige Li, Yuhao Yu, Yunsu Chen
Summary: In this study, AMA alignment was applied in Brainlab Knee3 computer navigation-assisted total knee arthroplasty. The femoral and tibial osteotomy angles were adjusted minimally according to soft tissue situations to reduce soft tissue release. We found that AMA alignment provides good control of knee alignment in the coronal plane of the lower limbs, which is a reliable technique.
FRONTIERS IN SURGERY
(2022)
Article
Surgery
Pascal-Andre Vendittoli, Sagi Martinov, William G. Blakeney
Summary: The rKA technique aims to reproduce the constitutional knee anatomy of the patient within a safe range, with principles including lower limb coronal orientation, joint line orientation, preservation/restoration of soft tissues tension/laxities, prioritization of femoral anatomy preservation, and selection of the pivot point for anatomical adjustment. An algorithm is used to facilitate decision-making and guide the stepwise surgical technique.
FRONTIERS IN SURGERY
(2021)
Article
Orthopedics
Pieralberto Valpiana, Stefano Ghirardelli, Rosa Susanna Valtanen, Salvatore Risitano, Ferdinando Iannotti, Christian Schaller, Karlos Zepeda, Michael Engl, Pier Francesco Indelli
Summary: This article introduces a novel surgical technique that achieves personalized and imageless total knee arthroplasty, reproducing knee stability during the swing phase of gait.
Article
Orthopedics
Philip Winnock de Grave, Tamaya Van Criekinge, Thomas Luyckx, Robin Moreels, Paul Gunst, Kurt Claeys
Summary: The purpose of this study was to compare the gait pattern between mechanically aligned total knee arthroplasty (aMA) and patient-specific alignment TKA (iKA). The study found that at two years postoperatively, the gait pattern in the iKA group resembled that of healthy controls more closely. The iKA group also had better restoration of limb alignment and no increase in knee adduction moments.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Article
Orthopedics
Guillaume Laforest, Lazaros Kostretzis, Marc-Olivier Kiss, Pascal-Andre Vendittoli
Summary: This study reports on the revision rate, clinical outcomes, and radiological signs in patients who underwent uncemented TKA using restricted KA principles. Results showed that in 99% of cases with an average follow-up of 49 months, there was no implant revision for aseptic loosening, indicating good short-term functional outcomes and anticipated favorable mid- to long-term implant survivorship.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Editorial Material
Orthopedics
Pascal-Andre Vendittoli, Charles Riviere, Samuel MacDessi
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Article
Orthopedics
Guillaume Laforest, Lazaros Kostretzis, Marc-Olivier Kiss, Pascal-Andre Vendittoli
Summary: This study reports on the revision rate, clinical outcomes, and radiological signs in patients who underwent uncemented TKA using restricted KA principles. Results showed that in 99% of cases with an average follow-up of 49 months, there was no implant revision for aseptic loosening, indicating good short-term functional outcomes and anticipated favorable mid- to long-term implant survivorship.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Correction
Orthopedics
Guillaume Laforest, Lazaros Kostretzis, Marc-Olivier Kiss, Pascal-Andre Vendittoli
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Article
Orthopedics
Oliver Dandridge, Amy Garner, Andrew A. Amis, Justin P. Cobb, Richard J. van Arkel
Summary: The mechanical advantage of the knee extensor mechanism is heavily influenced by the patellar tendon moment arm (PTMA), which varies due to factors such as gender and knee size. This study optimized PTMA measurement and found that males have a consistently larger PTMA compared to females, with knee size also playing a significant role. The peak PTMA occurs closer to terminal extension in females, despite scaling eliminating sex differences in PTMA magnitude.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2022)
Article
Orthopedics
Amy J. Garner, Oliver W. Dandridge, Richard J. van Arkel, Justin P. Cobb
Summary: This study found that using a compartmental approach to address natural degradation after partial knee arthroplasty can result in gait closer to normal and higher patient satisfaction.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2021)
Article
Orthopedics
Lazaros Kostretzis, Sagi Martinov, Martin Lavigne, Vincent Masse, Pascal-Andre Vendittoli
Summary: This report presents cases of ceramic liner dissociation from a monoblock cup in 5 patients. The patients experienced sudden pain and audible noise, and the displacement of the liner was confirmed by X-ray and CT scans. Further research should consider avoiding cup diameters over 40mm, improving the locking mechanism, or providing a true monoblock acetabular implant.
BMC MUSCULOSKELETAL DISORDERS
(2022)
Article
Orthopedics
K. C. Geoffrey Ng, Marcus J. K. Bankes, Hadi El Daou, Paul E. Beaule, Justin P. Cobb, Jonathan R. T. Jeffers
Summary: This study examined the effects of PAO on capsular mechanics and joint range of motion in dysplastic hips. The results showed that PAO reduced internal rotation and increased external rotation and adduction in the hip joint.
JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME
(2022)
Article
Orthopedics
Alexandre Hardy, Margaux Courgeon, Karina Pellei, Francois Desmeules, Christian Loubert, Pascal-Andre Vendittoli
Summary: This study evaluated the impact of combining enhanced recovery after surgery (ERAS) interventions with an outpatient program for total hip/knee arthroplasty (THA/TKA). The results showed that the ERAS-outpatient program reduced complication rates, decreased opioid consumption, accelerated functional recovery, and improved patient satisfaction. This highlights the importance of following ERAS principles when implementing an outpatient THA/TKA program.
ORTHOPAEDICS & TRAUMATOLOGY-SURGERY & RESEARCH
(2022)
Article
Cell & Tissue Engineering
M. J. Munford, J. C. Stoddart, A. D. Liddle, J. P. Cobb, J. R. T. Jeffers
Summary: This study investigates whether titanium lattice implants can maintain natural load transfer in the proximal tibia during UKA and TKA procedures. The results show that titanium lattice implants were able to restore the mechanical environment of the native tibia, while conventional solid implants did not.
BONE & JOINT RESEARCH
(2022)
Article
Cell & Tissue Engineering
T. C. Edwards, B. Guest, A. Garner, K. Logishetty, A. D. Piddle, J. P. Cobb
Summary: This study investigates the use of the metabolic equivalent of task (MET) score in a young hip arthroplasty population and demonstrates its ability to capture additional benefits beyond the ceiling effect of conventional patient-reported outcome measures. The MET is normally distributed in patients following hip arthroplasty, recording levels of activity that are undetectable using the OHS.
BONE & JOINT RESEARCH
(2022)
Review
Medicine, General & Internal
Pascal-Andre Vendittoli, Sagi Martinov, Mina Wahba Morcos, Sivan Sivaloganathan, William G. Blakeney
Summary: Hip replacement surgery is a successful orthopedic procedure that aims to restore joint function. Personalized total hip arthroplasty (THA) with a large diameter head (LDH) can provide better outcomes.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Cell & Tissue Engineering
J. C. Stoddart, A. Garner, M. Tuncer, J. P. Cobb, R. J. van Arkel
Summary: The study aimed to compare the risk of tibial eminence avulsion intraoperatively for bi-unicondylar knee arthroplasty (Bi-UKA), isolated medial unicondylar knee arthroplasty (UKA-M), and bicruciate-retaining total knee arthroplasty (BCR-TKA) and consider the impact of implant positioning, overstuffing, and sex. The results showed that lateral translation of the medial implant in Bi-UKA and joint overstuffing had the greatest impact on risk increase. Smaller and less dense tibiae had a higher risk, and removing anterior bone doubled the risk.
BONE & JOINT RESEARCH
(2022)
Article
Medicine, General & Internal
Sivan Sivaloganathan, William G. Blakeney, Pascal-Andre Vendittoli
Summary: This article presents a case for modernizing the perioperative pathways of total hip arthroplasty by implementing ERAS-outpatient protocols, aiming to improve patient recovery and reduce hospital stay.
JOURNAL OF CLINICAL MEDICINE
(2022)
Review
Medicine, General & Internal
Sivan Sivaloganathan, William G. G. Blakeney, Charles Riviere, Pascal-Andre Vendittoli
Summary: Hip arthroplasty procedures have high success and reproducibility. However, hip dislocations are the most common cause for revisions within the first two years post-surgery, despite the majority of the dislocations occurring within the 'safe zone' of the acetabular component. The limitations of this boundary neglect the variability of individual hip anatomy and functional pelvic orientation. To address hip instability and enhance outcomes, the alternative concept of functional acetabular orientation is discussed, including the kinematic alignment technique and the use of large-diameter heads in preventing total hip arthroplasty dislocations.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Biotechnology & Applied Microbiology
M. Abdulhadi Alagha, Kartik Logishetty, Ciaran O'Hanlon, Alexander D. Liddle, Justin Cobb
Summary: Three-dimensional planning of hip arthroplasty using the 3D Hip Planner software can improve visualization of anatomical landmarks, enhance preoperative implant sizing, and lead to a decrease in surgical time and complications. The study found that the software is valid and reliable, with significant potential in optimizing the quality and accuracy of surgical planning for hip resurfacing arthroplasty.
BIOENGINEERING-BASEL
(2023)