keyword
https://read.qxmd.com/read/38488243/alignment-is-only-part-of-the-equation-high-variability-in-soft-tissue-distractibility-in-the-varus-knee-undergoing-primary-tka
#1
JOURNAL ARTICLE
Matthew J Grosso, Edgar A Wakelin, Christopher Plaskos, Gwo-Chin Lee
PURPOSE: The purpose of this study is to evaluate the in vivo medial and lateral joint laxities across various total knee arthroplasty (TKA) alignment categories correlated to (1) hip-knee-ankle angle, (2) proximal tibial angle and (3) distal femoral angle in a consecutive group of patients undergoing robotic-assisted TKA. METHODS: Using ligament tensions acquired during 805 robotic-assisted TKA with a dynamic ligament tensor under a load of 70-90 N, the relationship between medial and lateral collateral ligament laxity and overall limb alignment was established...
March 15, 2024: Knee Surgery, Sports Traumatology, Arthroscopy
https://read.qxmd.com/read/38476106/medial-collateral-ligament-reconstruction-with-autograft-versus-allograft-a-systematic-review
#2
JOURNAL ARTICLE
Nigel O Blackwood, Jack A Blitz, Bryan Vopat, Victoria K Ierulli, Mary K Mulcahey
BACKGROUND: Medial collateral ligament (MCL) reconstruction (MCLR) is performed after failed nonoperative treatment or high-grade MCL injury with associated valgus instability. PURPOSE: To evaluate clinical outcomes after MCLR with autograft versus allograft. STUDY DESIGN: Systematic review, Level of evidence, 4. METHODS: A systematic review was conducted according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines...
March 13, 2024: American Journal of Sports Medicine
https://read.qxmd.com/read/38469949/the-anteromedial-retinaculum-in-acl-injured-knees-an-overlooked-injury
#3
JOURNAL ARTICLE
Ole Grunenberg, Mirjam Gerwing, Simon Oeckenpöhler, Christian Peez, Thorben Briese, Johannes Glasbrenner, Luise M Hägerich, Michael J Raschke, Christoph Kittl, Elmar Herbst
PURPOSE: The purpose of this study was to retrospectively analyse the pattern of injury to the medial knee structures in anterior cruciate ligament (ACL) injured patients. It was hypothesised that anteromedial injuries would be more common than posteromedial lesions. METHODS: One hundred and twenty subjects aged 18-25 years with a primary ACL injury were included. Patients were excluded if the time between injury and magnetic resonance imaging (MRI) was more than 28 days or if a knee dislocation or fracture was present...
March 12, 2024: Knee Surgery, Sports Traumatology, Arthroscopy
https://read.qxmd.com/read/38454816/valgus-malalignment-causes-increased-forces-on-a-medial-collateral-ligament-reconstruction-under-dynamic-valgus-loading-a%C3%A2-biomechanical-study
#4
JOURNAL ARTICLE
Christian Peez, Adrian Deichsel, Ivan Zderic, R Geoff Richards, Boyko Gueorguiev, Christoph Kittl, Michael J Raschke, Elmar Herbst
PURPOSE: To investigate the forces on a medial collateral ligament (MCL) reconstruction (MCLR) relative to the valgus alignment of the knee. METHODS: Eight fresh-frozen human cadaveric knees were subjected to dynamic valgus loading at 400 N using a custom-made kinematics rig. After resection of the superficial medial collateral ligament, a single-bundle MCLR with a hamstring tendon autograft was performed. A medial opening wedge distal femoral osteotomy was performed and fixed with an external fixator to gradually adjust the alignment in 5° increments from 0° to 10° valgus...
March 7, 2024: Knee Surgery, Sports Traumatology, Arthroscopy
https://read.qxmd.com/read/38449693/intermediate-outcomes-of-medial-ulnar-collateral-ligament-reconstruction-using-gracilis-allograft-in-adolescent-patients
#5
JOURNAL ARTICLE
Leonie Campbell, Tracey P Bryan, Eric W Edmonds
BACKGROUND: Autograft palmaris has been the primary choice for the reconstruction of the medial ulnar collateral ligament (UCL) in the elbow. Agenesis of the palmaris tendon is not rare, and outcomes of allograft reconstruction in the breadth of athlete types found in the adolescent population are lacking. HYPOTHESIS: Allograft tendon reconstruction of the medial UCL in the young elbow would have low failure rates and satisfactory outcome scores. STUDY DESIGN: Case series; Level of evidence, 4...
March 2024: Orthopaedic Journal of Sports Medicine
https://read.qxmd.com/read/38442911/two-year-functional-outcomes-of-non-surgical-treatment-in-concomitant-acl-and-mcl-injuries-a-case-control-study
#6
JOURNAL ARTICLE
Haleh Dadgostar, Mojgan Zarrini, Amir Human Hoveidaei, Reza Sattarpour, Saeed Razi, Peyman Arasteh, Mohammad Razi
BACKGROUND: The anterior cruciate ligament (ACL) is a common knee injury in high-intensity sports, which can cause early career loss in young athletes. Concomitant damage to other knee stabilizers may occur, such as the medial collateral ligament (MCL). Recent study showed that knee stability can increase without surgical intervention in patients with ACL and MCL injuries. Regarding the importance of functional tests in return to exercise prediction, this study aims to measure non-surgical approach's long-term outcome for concomitant ACL and MCL injuries with a focus on functional tests...
March 5, 2024: Journal of Knee Surgery
https://read.qxmd.com/read/38441567/-successful-medial-unicompartmental-knee-arthroplasty-what-are-the-most-important-surgical-tricks
#7
REVIEW
Wenzel Waldstein, Peter R Aldinger, Christian Merle
BACKGROUND: Unicompartmental knee arthroplasty (UKA) is an established surgical treatment option for end-stage anteromedial osteoarthritis with excellent functional outcomes and implant survival. Routine preoperative varus and valgus stress views are crucial for the selection of patients for unicompartmental or total knee arthroplasty. THERAPY: UKA is a soft-tissue based operation that aims to reconstruct the individual joint line and pre-arthritic alignment by restoring the physiological tension of the medial collateral and the cruciate ligaments...
March 5, 2024: Orthopadie (Heidelb)
https://read.qxmd.com/read/38431913/isometry-of-anteromedial-reconstructions-mimicking-the-deep-medial-collateral-ligament-depends-on-the-femoral-insertion
#8
JOURNAL ARTICLE
Peter Behrendt, James R Robinson, Elmar Herbst, Florian Gellhaus, Michael J Raschke, Andreas Seekamp, Mirco Herbort, Bodo Kurz, Christoph Kittl
PURPOSE: This study aimed to investigate the length change patterns of the native deep medial collateral ligament (dMCL) and potential anteromedial reconstructions (AMs) that might be added to a reconstruction of the superficial MCL (sMCL) to better understand the control of anteromedial rotatory instability (AMRI). METHODS: Insertion points of the dMCL and potential AM reconstructions were marked with pins (tibial) and eyelets (femoral) in 11 cadaveric knee specimens...
March 3, 2024: Knee Surgery, Sports Traumatology, Arthroscopy
https://read.qxmd.com/read/38422194/corrective-osteotomy-and-ligamentous-reconstruction-in-a-neglected-elbow-dislocation-with-radial-neck-malunion-a-case-report
#9
JOURNAL ARTICLE
Deepak Kumar Negi, Tharun Teja Aduri, Tarkik Thami, Himanshu Bhayana
CASE: Neglected elbow dislocation and radial neck malunion frequently result in chronic pain, instability, and early arthrosis. These complications are best prevented by early treatment with open reduction, corrective osteotomy, and ligament reconstruction, followed by early supervised physiotherapy. We present a peculiar case with neglected complex elbow dislocation and radial head malunion. In this case, we performed an open reduction of the elbow joint and radial neck corrective osteotomy, medial collateral ligament, annular ligament reconstruction, and lateral collateral ligament repair...
January 1, 2024: JBJS Case Connector
https://read.qxmd.com/read/38406885/the-utility-of-stress-ultrasound-in-identifying-risk-factors-for-elbow-ulnar-collateral-ligament-tear-a-longitudinal-study-of-203-professional-baseball-players
#10
JOURNAL ARTICLE
Adeeb Jacob Hanna, Hannah R Popper, John Hayden Sonnier, Brandon J Erickson, Robert A Jack, Steven B Cohen
BACKGROUND: Injuries to the medial ulnar collateral ligament (UCL) are common among baseball pitchers due to repetitive stress on the soft tissue stabilizers of the elbow during pitching. Dynamic stress ultrasound (SUS) can be used to evaluate the UCL and ulnohumeral joint to identify anatomic risk factors of those who will require UCL reconstruction (UCLR). PURPOSE: To determine whether any adaptive or morphological changes detectable on SUS can predict injury to the UCL in professional baseball pitchers...
February 26, 2024: American Journal of Sports Medicine
https://read.qxmd.com/read/38390426/stener-like-lesion-of-the-lateral-meniscus-in-the-setting-of-a-multiligamentous-knee-injury-a-case-report
#11
William Durkin, Arjun Vohra, Youssef Galal, Ben Paul, Austin Lynch, Evan Lederman, Anup Shah
Traumatic dislocations of the knee can result in significant soft tissue damage including multiligamentous and meniscal knee injury. When a meniscal tear involves the posterior horn, the meniscus loses one of its attachments to the tibia and can become extruded from the joint. Stener-like lesions of the knee have been reported throughout the literature; however, they have been exclusively described as a distal tear of the medial collateral ligament (MCL) lying superficial to the pes anserine tendon which prevents anatomic healing...
May 2024: Radiology Case Reports
https://read.qxmd.com/read/38384726/can-status-of-superficial-medial-collateral-ligament-proximal-tibial-attachment-predict-progression-of-oa-knee
#12
JOURNAL ARTICLE
Woon-Hwa Jung, Sanchit Roy, Ryohei Takeuchi
OBJECTIVE: This study aims to identify, whether knee OA progression is affected by the sMCL proximal tibial attachment status and probably is the first one trying to identify such association. METHODS: 90 OA knees and 80 normal knees were evaluated using radiographs and MRI for severity of OA knee (K-L grade), sMCL length (L), distance of distal tibial attachment of sMCL from tibial articular surface (I), MCL ratio (L/I) and proximal tibial attachment of sMCL, attached or detached...
May 2024: Journal of Orthopaedics
https://read.qxmd.com/read/38379576/optimal-limb-position-for-the-stress-ultrasound-evaluation-of-elbow-valgus-laxity-in-baseball-players
#13
JOURNAL ARTICLE
Ryuhei Michinobu, Takeshi Ogawa, Yuichi Yoshii, Akira Ikumi, Kazuhiro Ikeda, Hiromitsu Tsuge, Shotaro Teruya, Yuki Hara, Masashi Yamazaki
BACKGROUND: The optimal limb position during stress ultrasound (SUS) evaluation of elbow valgus laxity has not been standardized. PURPOSE: To compare 2 elbow positions (at 90° and 30° of flexion) and report which position method better represents the increased valgus laxity characteristics of baseball players. STUDY DESIGN: Controlled laboratory study. METHODS: Eighteen college baseball players with no history of elbow pain or elbow disorders who belonged to a college baseball club between April and November 2021 participated in this study...
February 2024: Orthopaedic Journal of Sports Medicine
https://read.qxmd.com/read/38377221/exposure-of-hoffa-fractures-is-improved-by-posterolateral-and-posteromedial-extensile-approaches-a-qualitative-and-quantitative-anatomical-study
#14
JOURNAL ARTICLE
Christian Peez, Adrian Deichsel, Thorben Briese, Boyko Gueorguiev, R Geoff Richards, Ivan Zderic, Johannes Glasbrenner, Christoph Kittl, Michael J Raschke, Elmar Herbst
BACKGROUND: The current literature lacks recommendations regarding surgical approaches to best visualize and reduce Hoffa fractures. The aims of this study were to (1) define surgical corridors to the posterior portions of the lateral and medial femoral condyles and (2) compare the articular surface areas visible with different approaches. METHODS: Eight fresh-frozen human cadaveric knees (6 male and 2 female donors; mean age, 68.2 ± 10.2 years) underwent dissection simulating 6 surgical approaches to the distal femur...
February 20, 2024: Journal of Bone and Joint Surgery. American Volume
https://read.qxmd.com/read/38348363/flexor-pronator-slide-under-local-anesthesia-without-a-tourniquet-for-non-ischemic-contractures-of-the-forearm
#15
JOURNAL ARTICLE
J Terrence Jose Jerome
BACKGROUND: The flexor pronator slide is an effective treatment option for ischemic contracture and contracture related to spastic cerebral palsy, but little is known about the use of the flexor pronator slide in other non-ischemic contractures. I propose a flexor pronator slide to simultaneously correct wrist and finger flexor contractures and preserve the muscle resting length. To avoid overcorrection of the deformity, I propose the use of a wide-awake local anesthesia with no tourniquet (WALANT) procedure, in which the patient is able to continually assist the surgeon in assessing the contracture release and improvement in finger movement...
2024: JBJS Essential Surgical Techniques
https://read.qxmd.com/read/38343203/single-strand-short-isometric-construct-medial-collateral-ligament-reconstruction-restores-valgus-and-rotational-stability-while-isolated-deep-mcl-and-superficial-mcl-reconstruction-do-not
#16
JOURNAL ARTICLE
Kyle A Borque, Shuyang Han, Nicholas J Dunbar, Nicholas D Lanfermeijer, Ethan W Sij, Jonathan E Gold, Sabir K Ismaily, Andrew A Amis, Mitzi S Laughlin, Matthew J Kraeutler, Andy Williams, Walter R Lowe, Philip Noble
BACKGROUND: Historical MCL (medial collateral ligament) reconstruction (MCLR) techniques have focused on the superficial MCL (sMCL) to restore valgus stability while frequently ignoring the importance of the deep MCL (dMCL) in controlling tibial external rotation. The recent recognition of the medial ligament complex importance has multiple studies revisiting medial anatomy and questioning contemporary MCLR techniques. PURPOSE: To assess whether (1) an isolated sMCL reconstruction (sMCLR), (2) an isolated dMCL reconstruction (dMCLR), or (3) a novel single-strand short isometric construct (SIC) would restore translational and rotational stability to a knee with a dMCL and sMCL injury...
February 11, 2024: American Journal of Sports Medicine
https://read.qxmd.com/read/38343076/cadaveric-comparison-of-two-techniques-for-intraoperative-placement-of-tibial-plateau-levelling-osteotomies-in-dogs
#17
JOURNAL ARTICLE
Janusz Jaworski, Matt Meek, Selena Malortie, Robert Dudley
BACKGROUND: Both tibial tuberosity fractures and deviation from the planned postoperative tibial plateau angle have been associated with poor centring of tibial plateau levelling osteotomies (TPLOs). The aim of this cadaveric study was to compare two techniques for centring the osteotomy and preserving the tibial tuberosity width (TTW). METHODS: Stifle radiographs were obtained from 20 limbs of 10 dogs. TPLO was planned on each stifle, and a two-wire technique (TWT) and a technique using the medial collateral ligament (MCL) as an intraoperative landmark were planned...
February 11, 2024: Veterinary Record
https://read.qxmd.com/read/38338013/treatment-of-equine-tarsus-long-medial-collateral-ligament-desmitis-with-allogenic-synovial-membrane-mesenchymal-stem-stromal-cells-enhanced-by-umbilical-cord-mesenchymal-stem-stromal-cell-derived-conditioned-medium-proof-of-concept
#18
JOURNAL ARTICLE
Inês Leal Reis, Bruna Lopes, Patrícia Sousa, Ana Catarina Sousa, Mariana V Branquinho, Ana Rita Caseiro, Alexandra Rêma, Inês Briote, Carla M Mendonça, Jorge Miguel Santos, Luís M Atayde, Rui D Alvites, Ana Colette Maurício
Horses are high-performance athletes prone to sportive injuries such as tendonitis and desmitis. The formation of fibrous tissue in tendon repair remains a challenge to overcome. This impels regenerative medicine to develop innovative therapies that enhance regeneration, retrieving original tissue properties. Multipotent Mesenchymal Stem/Stromal Cells (MSCs) have been successfully used to develop therapeutic products, as they secrete a variety of bioactive molecules that play a pivotal role in tissue regeneration...
January 24, 2024: Animals: An Open Access Journal From MDPI
https://read.qxmd.com/read/38328531/a-70%C3%A2-arthroscope-provides-better-visualization-of-the-medial-side-of-the-elbow-than-a-30%C3%A2-arthroscope
#19
JOURNAL ARTICLE
Valerio Monteleone, Valeria Vismara, Simone Cassin, Francesco Luceri, Carlo Zaolino, Chandan Kulkarni, Pietro Simone Randelli, Paolo Arrigoni
PURPOSE: To assess and quantify the improvement in visualization of humeral insertion of the medial collateral ligament (MCL) using a 70° scope compared with a 30° scope during elbow arthroscopy. METHODS: Twenty patients undergoing elbow arthroscopy for different pathologic conditions were enrolled in this single-center study. Visualization of the medial gutter of the elbow was evaluated by using both the 70° and the 30°scope. During the procedure, a needle was inserted at 45° with respect to the axis of the forearm, directed toward the intra-articular humeral emergence of the MCL...
April 2024: Arthroscopy, sports medicine, and rehabilitation
https://read.qxmd.com/read/38317625/exploring-the-extension-quantities-of-a-medial-collateral-ligament-pie-crusting-model-using-a-finite-element-method
#20
JOURNAL ARTICLE
Shogo Matsuda, Masashi Hirakawa, Yu Nagashima, Hiroya Akase, Nobuhiro Kaku, Hiroshi Tsumura
Medial collateral ligament (MCL) pie-crusting can balance the soft tissue during total knee arthroplasty but requires more studies with the finite element method (FEM). We have developed three models of MCL pie-crusting utilizing FEM, treating the MCL in the following ways: (1) as a singular elastic body with both ends attached to the bone (model A), (2) as 19 bundled elastic bodies, each attached to both ends of the bone (model B), and (3) as 19 bundled elastic bodies with an adhesive component in the gap, attached to both ends of the bone (model C)...
February 6, 2024: Computer Methods in Biomechanics and Biomedical Engineering
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