Comparison of knee kinematics and ligament forces in single and multi-radius cruciate-retaining total knee arthroplasty: A computer simulation study
This study aimed to simulate knee kinematics and kinetics between s ingle-radius and multi-radius models using a musculoskeletal computer model. (Source: The Knee)
Source: The Knee - November 3, 2023 Category: Orthopaedics Authors: Young Dong Song, Shinichiro Nakamura, Shinichi Kuriyama, Kohei Nishitani, Yugo Morita, Yusuke Yamawaki, Takahiro Maeda, Sayako Sakai, Shuichi Matsuda Source Type: research

Anterior cruciate ligament repair versus reconstruction: A clinical, MRI and patient-reported outcome comparison
This study aims to compare ACL repair with reconstruction using MRI, clinician-measured and patient-reported outcome measures (PROMs). (Source: The Knee)
Source: The Knee - November 3, 2023 Category: Orthopaedics Authors: Julian K.H. Duong, Claire Bolton, Geoffrey T. Murphy, Brett A. Fritsch Source Type: research

Meniscal extrusion in knees with and without osteoarticular pathology: A systematic review of normative values and cut-offs for diagnostic criteria
Meniscus extrusion is crucial for the diagnosis and treatment of meniscal injury, but the literature on this topic has not yet been systematized. The purpose of this systematic review was to compare diagnostic methods and summarize the data of medial and lateral meniscal extrusion in knees with and without osteoarticular pathology. (Source: The Knee)
Source: The Knee - November 3, 2023 Category: Orthopaedics Authors: Francisco Barreira, Eluana Gomes, Sofia Oliveira, Cristina Valente, Ricardo Bastos, Mikel S ánchez, Renato Andrade, João Espregueira-Mendes Tags: Review Source Type: research

Sulcus deepening trochleoplasty versus bereiter trochleoplasty for high grade trochlear dysplasia: A systematic review and meta-analysis for clinical outcome and recurrent instability
This study compared clinical outcomes and recurrent instability after surgery between sulcus deepening trochleoplasty (Lyon) and Bereiter trochleoplasty in patients with high-grade trochlear dysplasia. (Source: The Knee)
Source: The Knee - November 3, 2023 Category: Orthopaedics Authors: Essy Dwi Damayanthi, Tomas Pineda, Andri Maruli Tua Lubis, Ghuna Arioharjo Utoyo, Ilma Fi Ahsani Nur Alaina Tags: Review Source Type: research

Restricted kinematic alignment is clinically non-inferior to mechanical alignment in the short and mid-term: A systematic review
In recent years, kinematic alignment (KA) is becoming a valid alternative to mechanical alignment (MA) in total knee arthroplasty (TKA). However, to avoid early failures, the restricted kinematic alignment (rKA) approach has been developed to restore native knee kinematics without reproducing extreme knee phenotype. This systematic review aims to evaluate clinical and radiological outcomes between rKA and MA for TKA. (Source: The Knee)
Source: The Knee - November 3, 2023 Category: Orthopaedics Authors: Gabriele Cortina, Pierangelo Za, Giuseppe Francesco Papalia, Pietro Gregori, Vincenzo Condello, Sebastiano Vasta, Edoardo Franceschetti, Stefano Campi, Vincenzo Madonna, Rocco Papalia Tags: Review Source Type: research

12-Year clinical and radiological results of a double-blind randomized controlled trial comparing posterior cruciate-retaining versus posterior-stabilized total knee arthroplasty
A subject of ongoing debate among orthopedic surgeons is the importance of preserving the posterior cruciate ligament in total knee arthroplasty (TKA), but long-term survival studies are scarce. The aim of this study was to compare long-term survival rates, and clinical and radiological follow up of a double-blind randomized controlled trial comparing posterior cruciate-retaining (PCR) versus posterior-stabilizing (PS) implant design of an AGC TKA. (Source: The Knee)
Source: The Knee - November 3, 2023 Category: Orthopaedics Authors: R.F.M.R. Kersten, A.J. de Vries, J.J.A.M. van Raaij, R.W. Brouwer Source Type: research

Arthroscopic pullout repair versus suture anchor repair for medial meniscus posterior root tear combined with high tibial osteotomy
The aim of this study was to compare the outcomes of pullout repair with a metal button and suture anchor repair for medial meniscus posterior root tears in patients undergoing high tibial osteotomy with varus alignment. (Source: The Knee)
Source: The Knee - November 3, 2023 Category: Orthopaedics Authors: Hiroaki Omae, Shinya Yanagisawa, Keiichi Hagiwara, Atsuko Ogoshi, Takuya Omodaka, Masashi Kimura, Hirotaka Chikuda Source Type: research

Fifteen-year survival analysis of an oxidised zirconium total knee arthroplasty
Early studies have found Oxidised Zirconium (OxZr-Nb) total knee arthroplasties to have a low incidence of failure in young, high demand patients. Theoretically this is because they are low friction and hard wearing. However, there are a paucity of studies reporting on the outcome of these implants beyond ten years. The purpose of our study was to present an in-depth 15-year survival analysis of a cemented OxZr-Nb knee arthroplasty. (Source: The Knee)
Source: The Knee - November 3, 2023 Category: Orthopaedics Authors: Joseph TR Fennelly, Stylianos Papalexandris, Jill Pope, Joanne Yorke, John S Davidson, Alasdair JA Santini Source Type: research

Letter to Editor regarding article, “3D assessment of graft malposition after ACL reconstruction: Comparison of native and 11o'clock ligament orientations”
Recently, we read “3D assessment of graft malposition after ACL reconstruction: Comparison of native and 11o'clock ligament orientations“ published by Mallinos et al. [1], the author used a finite element technique to develop the knee joint model, and analyzed the femoral tunnel at 11 o'clock direction In the ACL R adolescent population, the Lachman and pivot shift tests on anterior tibial displacement, the study found that the ACL reconstructed at 11 o'clock direction was compared with the original ACL anatomical position (approximately 10 o'clock direction) reconstruction, and the tibial plateau was moved forward, wh...
Source: The Knee - November 2, 2023 Category: Orthopaedics Authors: Hui Ma, Yuanmin Zhang, Xiaowei Zhao, Caining Wen Source Type: research

Letter to the editor commenting on “Prognostic factors of knee pain and function 12 months after total knee arthroplasty: A prospective cohort study of 798 patients”
Garval and colleagues conducted a prognostic study to determine whether preoperative variables predicted poor total knee arthroplasty (TKA) pain and function outcome 12-months following surgery [1]. The Oxford Knee Score (OKS) [2] was the primary outcome of interest. Garval et al defined poor outcome by first converting preoperative and 12-month postoperative continuous scaled OKSs to ordinal scaled categories of 10 to 19, 20 to 29, and 30 to 39. Patients scoring below 10 (n  = 7) and above 39 (n = 5) preoperatively were excluded. (Source: The Knee)
Source: The Knee - October 26, 2023 Category: Orthopaedics Authors: Daniel L. Riddle, Levent Dumenci Source Type: research

Does referencing system affect the selection of implant size, position and gap balance in total knee arthroplasty?
(1) To evaluate if referencing system affects selection of implant size, position, and gap balance in total knee arthroplasty (TKA) with the use of contemporary implant designs and (2) to describe the authors ’ intraoperative sizing strategy using anterior referencing (AR) and posterior referencing (PR) systems. (Source: The Knee)
Source: The Knee - October 17, 2023 Category: Orthopaedics Authors: Jade Pei Yuik Ho, Joon Hee Cho, Hee Seung Nam, Seong Yun Park, Yong Seuk Lee Source Type: research

Cause for concern? Significant cement coverage in retrieved metaphyseal cones after revision total knee arthroplasty
Metaphyseal cones are used to manage bone loss in revision total knee arthroplasty with increasing popularity. Post-operative radiographs and explant procedures suggest that cement may extrude around the cone implant into the cone-bone interface and prevent biologic in- or on-growth. The purpose of this study was to perform a retrieval analysis to describe the pattern of direct cementation onto the porous surface area of metaphyseal cones. (Source: The Knee)
Source: The Knee - October 6, 2023 Category: Orthopaedics Authors: Alex J. Anatone, Daniel A. Driscoll, Dimitrios A. Flevas, Elexis C. Baral, Brian P. Chalmers, Peter K. Sculco Source Type: research

Surgical treatment of chronic proximal patellar tendon tears grades 3 and 4 using augmentation with quadriceps tendon-bone graft
Proximal patellar tendinosis with partial tendon tears represents a late stage of a painful overuse condition of the proximal bone-tendon junction tissue. It commonly affects athletes in jumping sports (basketball, soccer, volleyball, football, handball), but also patients with occupations with repetitive overloading and microtrauma (ballet) [1 –14]. To document patellar tendinosis, ultrasound or magnetic resonance imaging (MRI) are used [6,10]. (Source: The Knee)
Source: The Knee - October 6, 2023 Category: Orthopaedics Authors: Roland M. Biedert, Philippe M. Tscholl Tags: Case Report Source Type: research

Editorial Board
(Source: The Knee)
Source: The Knee - October 1, 2023 Category: Orthopaedics Source Type: research

The future of sustainability and knee surgery
Part of the satisfaction of attending conferences is catching up with old friends, discussing difficult cases over coffee and finding out what is new in the world of knee surgery. The theme of this year ’s British Orthopaedic Association annual congress was sustainability with the more obvious themes of the ‘green’ agenda, cutting down on packaging and minimising plastic waste. Better for the environment and our patients, our contribution to the planet and the next generation. (Source: The Knee)
Source: The Knee - October 1, 2023 Category: Orthopaedics Authors: Caroline Hing, Oday Al Dadah Source Type: research