Article
Orthopedics
Jonathan Hugo Jurgens-Lahnstein, Emil Toft Petersen, Mogens Laursen, Christian Hauskov Iversen, Bart L. Kaptein, Lars Lindgren, Maiken Stilling
Summary: The study successfully developed a thinner calibration cage through numerical simulations, manufactured a new NRT calibration cage based on the simulation results, and validated it in a phantom study, demonstrating superior precision in certain aspects compared to traditional calibration cages.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2022)
Article
Orthopedics
L. V. Ruderman, T. Bayoumi, J. A. Burger, H. A. Zuiderbaan, A. D. Pearle
Summary: This study compared the patellofemoral joint alignment following medial UKA. The results showed that knees with undercorrection had a higher probability of postoperative patellofemoral incongruence and inferior mid-term Kujala scores compared to knees with restored pre-arthritic coronal alignment and knees with overcorrection.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Article
Orthopedics
Nathanael D. Heckmann, Joseph K. Antonios, Xiao T. Chen, Hyunwoo P. Kang, Brian C. Chung, Amit S. Piple, Alexander B. Christ, Paul K. Gilbert
Summary: This study evaluated the mid-term survivorship and patient-reported outcomes of robotic-assisted lateral unicompartmental knee arthroplasty (UKA). The results demonstrated high survivorship and excellent patient satisfaction with robotic-assisted lateral UKA, even in patients who did not meet classic indications.
JOURNAL OF ARTHROPLASTY
(2022)
Review
Orthopedics
Hasan R. Mohammad, Garrett S. Bullock, James A. Kennedy, Stephen J. Mellon, David Murray, Andrew Judge
Summary: This study aimed to compare the long-term revision rates, revision indications, and patient reported outcome measures of cemented and cementless unicompartmental knee replacements (UKR). The results showed that cementless UKRs had significantly lower overall revision rates compared to cemented UKRs. Additionally, mobile bearing UKRs had lower revision rates than fixed bearing UKRs in the cementless group.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2021)
Article
Health Care Sciences & Services
Matteo Innocenti, Luigi Zanna, Mustafa Akkaya, Kim Huber, Bernhard Christen, Tilman Calliess
Summary: Accurate positioning of prosthetic components is crucial for successful medial unicompartmental knee arthroplasty (mUKA). This study evaluated the use of femoral CT-based landmarks for setting tibial rotation in image-based robotic-assisted mUKA and found that it reliably achieved congruent knee kinematics with minimal deviations. The mean tibia component rotation relative to the femoral landmark was +0.24 degrees.
JOURNAL OF PERSONALIZED MEDICINE
(2023)
Article
Orthopedics
Stein J. Janssen, Iris van Oost, Stefan J. M. Breugem, Rutger C. van Geenen
Summary: This review provides an overview of the causes for a symptomatic medial UKA, its risk factors, diagnostic modalities that can be used, and briefly discusses treatment options. Successful treatment of UKA requires accurate assessment and specific solutions for different modes of failure.
EFORT OPEN REVIEWS
(2021)
Article
Orthopedics
Xiaoqiang Zhou, Chao Sun, Renjie Xu, Xiangxin Zhang, Xiao Yu
Summary: This study aimed to explore the effect of tibial component rotational alignment on the clinical outcomes of UKA. The results showed that the optimal external rotation range of the tibial component is 0°-3°, which can achieve satisfactory clinical outcomes.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2023)
Article
Orthopedics
Yiwei Huang, Hao Ge, Bo Peng, Wenjun Feng, Haitao Zhang, Yirong Zeng
Summary: This study aimed to compare the outcomes of the Forgotten Joint Score-12 (FJS) and the minimum clinically important difference (MCID) of the FJS after high tibial osteotomy (HTO), unicompartmental knee arthroplasty (UKA), and total knee arthroplasty (TKA) with short-term follow-up. The results showed differences in FJS outcomes among the three procedures, and younger age and higher functional status were significant predictors of improved FJS.
BMC MUSCULOSKELETAL DISORDERS
(2023)
Article
Orthopedics
Takafumi Hiranaka, Yoshihito Suda, Tomoyuki Kamenaga, Takaaki Fujishiro, Motoki Koide, Akira Saitoh, Atsuki Tanaka, Akihiko Arimoto, Koji Okamoto
Summary: The research presents a new method for establishing a free artificial intelligence system by utilizing the von Karman theorem, which greatly enhances the learning and adaptability of the AI system.
JOURNAL OF ARTHROPLASTY
(2022)
Article
Orthopedics
Koen T. van Hamersveld, Perla J. Marang-van de Mheen, Roula Tsonaka, Kjell G. Nilsson, Soren Toksvig-Larsen, Rob G. H. H. Nelissen
Summary: Pooling individual participant data from long-term RSA studies, it was found that high initial migration can lead to early loosening, while uncemented prostheses are more susceptible to postoperative migration due to lower limb alignment and the absence of an osseointegration-promoting surface.
JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME
(2021)
Article
Orthopedics
Lolita Micicoi, Axel Machado, Justin Ernat, Philipp Schippers, Regis Bernard de Dompsure, Nicolas Bronsard, Jean-Francois Gonzalez, Gregoire Micicoi
Summary: The alignment obtained after unicompartmental knee arthroplasty (UKA) influences the risk of failure. Kinematic alignment after UKA based on Cartier angle restauration is likely to improve clinical outcomes compared with mechanical alignment. This retrospective study included 144 medial UKA patients from 2015 to 2020, showing that implant alignment and native knee restoration after UKA have significant impact on clinical outcomes.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Article
Orthopedics
Emil Toft Petersen, Tobias Dahl Vind, Jonathan Hugo Jurgens-Lahnstein, Rasmus Christensen, Sepp de Raedt, Annemarie Bruel, Soren Rytter, Michael Skipper Andersen, Maiken Stilling
Summary: Radiostereometric analysis (RSA) is an accurate method for measuring rigid body pose in three-dimensional space. This study proposes an automated image registration technique using digitally reconstructed radiographs (DRR) and computed tomography (CT) volumetric bone models as substitutes for traditional markers. The results show that marker-free RSA using DRR and CT obtained volumetric bone models is feasible with similar accuracy as the gold standard method. Additionally, the use of synthetic volumetric implant models does not improve silhouette-based methods.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Juncheng Ge, Xiaowei Sun, Changquan Liu, Qidong Zhang, Bailiang Wang, Wanshou Guo
Summary: This study aimed to quantify the relationship between knee angles and postoperative lower limb alignment in Oxford unicompartmental knee arthroplasty (OUKA) and analyze the inter-prosthetic pressures at different knee angles. The results showed that the inter-prosthesis pressure was positively correlated with HKAA during OUKA surgery, and the change in PTS was associated with the pressure at the end of knee flexion and extension.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Orthopedics
Michael Schlumberger, Damian Oremek, Moritz Brielmaier, Uli Buntenbroich, Philipp Schuster, Bernd Fink
Summary: The study evaluated the outcomes of medial unicondylar knee arthroplasty (UKA) after failed high tibial osteotomy (HTO) for medial knee osteoarthritis, finding a 93.0% survival rate among patients followed for an average of 4.3 years. Complications included excessive valgus alignment and tibial loosening with femoropatellar degeneration. Overall, good-to-excellent results were achieved in most cases, with improvement in knee function and quality of life observed in the majority of patients.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2021)
Article
Orthopedics
Nicola Armillotta, Edoardo Bori, Bernardo Innocenti
Summary: Unicompartmental knee arthroplasty is a less invasive treatment with advantages for patients but can be more challenging for surgeons due to limited visibility and potential errors in cutting angles. This study investigated the effects of slight angle variations in the anterior-posterior slope of the lateral tibial tray. Results showed that a slight posterior slope during surgery can reduce the chances of implant instability.
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY
(2023)
Article
Chemistry, Multidisciplinary
Gilda Durastanti, Claudio Belvedere, Miriana Ruggeri, Davide Maria Donati, Benedetta Spazzoli, Alberto Leardini
Summary: Limb salvage procedures in orthopaedic oncology have become more common with recent advancements in medical imaging, biomechanical modeling, and additive manufacturing. However, surgical reconstruction with metal implants after tumor resection in the pelvis remains challenging due to the complexity of anatomical structures involved. This study aims to provide a consistent procedure to guide surgeons and bioengineers in the design of proper implants.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Elena Campagnoli, Sorin Siegler, Maria Ruiz, Alberto Leardini, Claudio Belvedere
Summary: This study compared the effect of different MRI modalities on the mechanical behavior of a dynamic model of the ankle complex by evaluating the ligament origin and insertion site definitions. The results showed significant differences in ligament attachment sites between the 1.5 T and 3.0 T MRI modalities, with the 3.0 T MRI mapping being more consistent with the anatomical dissection. The load-displacement curves showed similar mechanical behaviors between the three mappings, but the 3.0 T MRI mapping was closer to the results obtained from dissection in the frontal plane.
APPLIED SCIENCES-BASEL
(2022)
Letter
Orthopedics
M. Bruno, J. M. Bruno, F. Amadei, A. Passeri, G. Basile
HAND SURGERY & REHABILITATION
(2022)
Article
Chemistry, Multidisciplinary
Claudio Belvedere, Maurizio Ortolani, Emanuela Marcelli, Barbara Bortolani, Katsiaryna Matsiushevich, Stefano Durante, Laura Cercenelli, Alberto Leardini
Summary: This study reports the performance of five commercial software packages for bone shape reconstruction. The time to import and create the model, the number of triangles, and the STL file size were evaluated. The results show that these commercial packages perform well in these aspects and are superior to the previously analyzed freeware packages.
APPLIED SCIENCES-BASEL
(2022)
Letter
Clinical Neurology
Giuseppe Basile, Alberto Passeri, Fabrizio Arensi, Federico Amadei
JOURNAL OF NEUROSURGICAL SCIENCES
(2022)
Review
Medicine, General & Internal
Stefano Zaffagnini, Giacomo Dal Fabbro, Claudio Belvedere, Alberto Leardini, Silvio Caravelli, Gian Andrea Lucidi, Piero Agostinone, Massimiliano Mosca, Maria Pia Neri, Alberto Grassi
Summary: Customized devices play an important role in the accuracy of high tibial osteotomy. Previous studies have shown that custom-made cutting guides are the most commonly used customized instruments. Our pilot case results demonstrate that personalized HTO using a new 3D-printed customized system can achieve satisfactory alignment and clinical outcomes at one-year follow-up.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Chemistry, Multidisciplinary
Claudio Belvedere, Maurizio Ortolani, Alberto Leardini, Michele Cappuccio, Luca Amendola, Federico De Iure
Summary: Three-dimensional (3D)-printed anatomical models of the bones are valuable tools in complex surgeries, aiding in pre-operative planning and improving visibility of anatomical structures. This study reports on the use of virtual and 3D-printed cervical spine models for a patient with severe deformity, demonstrating their efficacy in personalized complex surgeries.
APPLIED SCIENCES-BASEL
(2022)
Article
Biophysics
Claudio Belvedere, Alisdair Macleod, Alberto Leardini, Alberto Grassi, Giacomo Dal Fabbro, Stefano Zaffagnini, Harinderjit Singh Gill
Summary: High Tibial Osteotomy is a surgical procedure used to correct misalignment in varus knees and prevent end-stage osteoarthritis. A new 3D printed system has been developed for personalized surgery, which includes pre-surgical planning and custom fixation plates. This system allows for accurate correction and reduced surgical time, with an average discrepancy of 1.2 degrees between planned and achieved alignment and a 30% reduction in surgical time.
JOURNAL OF MECHANICS IN MEDICINE AND BIOLOGY
(2023)
Article
Orthopedics
Michele Conconi, Alessandro Pompili, Nicola Sancisi, Stefano Durante, Alberto Leardini, Claudio Belvedere
Summary: This study provides a quantitative and systematic description of the kinematics of all bones in the foot, considering different foot orientations and weightbearing conditions. The results show that certain bones in the foot move more during pronation than flexion. Weightbearing significantly increases the range of motion of almost all the bones. These findings contribute to a deeper understanding of foot behavior and can inform the development of better treatment and medical devices, as well as new biomechanical models of the foot.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2023)
Review
Chemistry, Multidisciplinary
Gamze Arin-Bal, Volga Bayrakci-Tunay, Maria Grazia Benedetti, Alberto Leardini, Federico Vismara, Claudio Belvedere
Summary: This scoping review presents evidence on new technologies used to assess patients with patellofemoral pain (PFP). The review found that innovative technologies, such as medical imaging and advanced gait analysis, are widely used in PFP, often in combination for comprehensive biomechanical studies. It emphasizes the importance of utilizing modern technology to design more effective prevention campaigns and personalized rehabilitation programs.
APPLIED SCIENCES-BASEL
(2023)