644 results match your criteria Collateral Ligament Pathology Knee

Imaging Characteristics of the Proximal Lateral Collateral Ligament of the Knee: Findings on Ultrasound and MRI with Histologic Correlation.

J Ultrasound Med 2021 Jun 4. Epub 2021 Jun 4.

Department of Radiology, University of Michigan, Ann Arbor, Michigan.

Objectives: Determine prevalence of increased signal intensity of the lateral collateral ligament (LCL) of the knee on MRI and decreased echogenicity on ultrasound, and compare with cadaveric histologic evaluation.

Methods: After IRB approval of this prospective study with informed consent, patients having knee MRI were additionally evaluated with ultrasound. Signal intensities of LCL on MRI (low, intermediate, high), echogenicity at ultrasound (hyperechoic, hypoechoic, anechoic), and extent of findings were assessed. Read More

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Heterotrophic calcification of medial collateral ligament of knee joint: A case report.

J Pak Med Assoc 2021 Feb;71(2(B)):756-758

Sialkot College of Physical Therapy, Amin Welfare & Teaching Hospital, Sialkot, Pakistan.

Soft-tissue calcification is characterised by the deposit of calcium in the damaged collagen fibres. The pathology of the phenomenon is not fully known. Trauma, spinal cord injury and traumatic brain injury have been reported as possible risk factors. Read More

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February 2021

Ultrasound-guided Perimeniscal Injections: Anatomical Description and Feasibility Study.

J Ultrasound Med 2021 Mar 31. Epub 2021 Mar 31.

Radiology Department, APHM, Marseille, France.

Objectives: To anatomically describe the ultrasound (US)-guided perimeniscal injection technique, and evaluate its feasibility in the treatment of meniscal pain.

Methods: This work was initially undertaken in four cadaveric specimens with US-guided medial and lateral perimeniscal injection of China ink, followed by cadaveric dissection to assess injectate distribution, and potential injury to intra-articular and peri-articular structures. Then, 35 consecutive patients who underwent US-guided perimeniscal corticosteroid injection under local anesthesia for the treatment of symptomatic medial (30/35) or lateral (5/35) degenerative meniscal tear were retrospectively evaluated. Read More

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Coronal Lateral Collateral Ligament Sign: A Novel Magnetic Resonance Imaging Sign for Identifying Anterior Cruciate Ligament-Deficient Knees in Adolescents and Summarizing the Extent of Anterior Tibial Translation and Femorotibial Internal Rotation.

Am J Sports Med 2021 03 22;49(4):928-934. Epub 2021 Feb 22.

Division of Orthopaedic Surgery, Rady Children's Hospital, San Diego, California, USA.

Background: Incompetence of the anterior cruciate ligament (ACL) confers knee laxity in the sagittal and axial planes that is measurable with clinical examination and diagnostic imaging.

Hypothesis: An ACL-deficient knee will produce a more vertical orientation of the lateral collateral ligament (LCL), allowing for the entire length of the LCL to be visualized on a single coronal slice (coronal LCL sign) on magnetic resonance imaging.

Study Design: Cohort study (diagnosis); Level of evidence, 3. Read More

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Percutaneous Medial Collateral Ligament Release Improves Medial Compartment Access During Knee Arthroscopy.

Arthrosc Sports Med Rehabil 2021 Feb 27;3(1):e105-e114. Epub 2020 Dec 27.

Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, U.S.A.

Purpose: To quantify intraoperative joint space widening afforded by the outside-in, percutaneous release of the medial collateral ligament (MCL) and to evaluate its impact on medial compartment width and functional outcomes at 6-week follow-up for patients undergoing a partial medial meniscectomy without postoperative bracing.

Methods: Patients with posteromedial meniscus tears and no evidence of ipsilateral knee pathology, undergoing partial medial meniscectomy, were enrolled. Intraoperatively, medial compartment width was quantified with fluoroscopy before and after the percutaneous MCL release with an 18-gauge spinal needle proximal to the joint line. Read More

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February 2021

The posterior fibulotalocalcaneal ligament complex: a forgotten ligament.

Knee Surg Sports Traumatol Arthrosc 2021 May 24;29(5):1627-1634. Epub 2021 Jan 24.

Human Anatomy and Embryology Unit, Department of Pathology and Experimental Therapeutics, University of Barcelona, Barcelona, Spain.

Purpose: The purpose of the present anatomical study was to define the exact morphology of the posterior fibulotalocalcaneal ligament complex (PFTCLC), both for a better orientation and understanding of the anatomy, especially during hindfoot endoscopy.

Methods: Twenty-three fresh frozen specimens were dissected in order to clarify the morphology of the PFTCLC.

Results: In all specimens, the ligament originated from the posteromedial border of the lateral malleolus between the posterior tibiofibular ligament (superior border) and the calcaneofibular ligament (CFL), (inferior border). Read More

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One-Stage Anatomical Revision Anterior Cruciate Ligament Reconstruction: Results According to Tunnel Overlaps.

Arthroscopy 2021 04 23;37(4):1223-1232. Epub 2020 Nov 23.

Department of Orthopedic Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.

Purpose: To present clinical results according to tunnel overlap in 1-stage anatomical revision anterior cruciate ligament reconstruction (ACLR).

Methods: All patients who underwent revision ACLR performed by a single surgeon (J.H. Read More

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The Pathoanatomy of Posterolateral Corner Ligamentous Disruption in Multiligament Knee Injuries Is Predictive of Peroneal Nerve Injury.

Am J Sports Med 2020 12 19;48(14):3541-3548. Epub 2020 Oct 19.

Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, Connecticut, USA.

Background: A description of the precise locations of ligamentous and myotendinous injury patterns of acute posterolateral corner (PLC) injuries and their associated osseous and neurovascular injuries is lacking in the literature.

Purpose: To characterize the ligamentous and myotendinous injury patterns and zones of injury that occur in acute PLC injuries and determine associated rates of peroneal nerve palsies and vascular injuries, as well as fracture and dislocation.

Study Design: Case series; Level of evidence, 4. Read More

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December 2020

Mechanosensitive Control of Articular Cartilage and Subchondral Bone Homeostasis in Mice Requires Osteocytic Transforming Growth Factor β Signaling.

Arthritis Rheumatol 2021 03 1;73(3):414-425. Epub 2021 Feb 1.

University of California, San Francisco.

Objective: Transforming growth factor β (TGFβ) signaling plays a complex tissue-specific and nonlinear role in osteoarthritis (OA). This study was conducted to determine the osteocytic contributions of TGFβ signaling to OA.

Methods: To identify the role of osteocytic TGFβ signaling in joint homeostasis, we used 16-week-old male mice (n = 9-11 per group) and female mice (n = 7-11 per group) with an osteocyte-intrinsic ablation of TGFβ receptor type II (TβRII mice) and assessed defects in cartilage degeneration, subchondral bone plate (SBP) thickness, and SBP sclerostin expression. Read More

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Refining surgical models of osteoarthritis in mice and rats alters pain phenotype but not joint pathology.

PLoS One 2020 29;15(9):e0239663. Epub 2020 Sep 29.

Pain Centre Versus Arthritis, School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, United Kingdom.

The relationship between osteoarthritis (OA) structural change and pain is complex. Surgical models of OA in rodents are often rapid in onset, limiting mechanistic utility and translational validity. We aimed to investigate the effect of refining surgical small rodent models of OA on both joint pathology and pain behaviour. Read More

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December 2020

The signal intensity of preoperative magnetic resonance imaging has predictive value for determining the arthroscopic reparability of the anterior talofibular ligament.

Knee Surg Sports Traumatol Arthrosc 2021 May 8;29(5):1535-1543. Epub 2020 Aug 8.

Department of Orthopedic Surgery, College of Medicine, Kyung Hee University, 23 Kyunghee-daero, Dongdaemun-gu, Seoul, 02447, South Korea.

Purpose: Arthroscopic all-inside anterior talofibular ligament (ATFL) repair is a common surgical technique for chronic ankle instability (CAI), and the condition of the ATFL remnants is associated with its reparability. ATFL reparability can affect the clinical course, but the relationship between magnetic resonance imaging (MRI) findings and the intraoperative ATFL reparability is still unclear. The purpose of this study was to investigate the relationship between ATFL signal intensities according to MRI and intraoperative ATFL reparability. Read More

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REAC neurobiological treatments in acute post-traumatic knee medial collateral ligament lesion.

Heliyon 2020 Jul 24;6(7):e04539. Epub 2020 Jul 24.

Research Department, Rinaldi Fontani Foundation, Florence, Italy.

Objective: Physical traumas can lead to unconscious neuropsychical alterations, which can compromise rehabilitation result and functional recovery. Aim of this interventional study is to verify if neurobiological Radio Electric Asymmetric Conveyer (REAC) treatments Neuro Postural Optimization (NPO) and Tissue Optimization (TO) are able respectively to improve neuro psychomotor strategies and facilitate recovery process in medial collateral ligaments (MCL) lesions of the knee.

Patients And Methods: 45 healthy subjects, 32 males and 13 females, with knee MCL lesion, diagnosed with MRI or ultrasound. Read More

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Ankle microinstability: arthroscopic findings reveal four types of lesion to the anterior talofibular ligament's superior fascicle.

Knee Surg Sports Traumatol Arthrosc 2021 Apr 9;29(4):1294-1303. Epub 2020 Jun 9.

Laboratory of Arthroscopic and Surgical Anatomy. Department of Pathology and Experimental Therapeutics (Human Anatomy Unit), University of Barcelona, Via Augusta, 281, 08023, Barcelona, Spain.

Purpose: ATFL's superior fascicle injury has been considered to be the underlying cause in cases of ankle microinstability. As its clinical diagnosis can be difficult, arthroscopic examination may be the only objective diagnostic tool. The purpose of this study was to determine what types of injuries to the ATFL's superior fascicle are associated with ankle microinstability, and to provide the reader with an arthroscopic classification of the types of microinstability affecting the ankle. Read More

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Concomitant Posterolateral Corner Injuries in Skeletally Immature Patients With Acute Anterior Cruciate Ligament Injuries.

J Pediatr Orthop 2020 Jul;40(6):271-276

Departments of Orthopaedic Surgery, Division of Sports Medicine.

Background: Missed posterolateral corner (PLC) injuries are a known cause of anterior cruciate ligament reconstruction (ACL) failure in the adult population. Failed ACL reconstruction causes significant morbidity in the skeletally immature pediatric population. There is little literature on the character and potential significance of PLC injuries in skeletally immature patients. Read More

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[Limits of kinematic alignment and recommendations for its safe application].

Orthopade 2020 Jul;49(7):617-624

Orthopädische Klinik, Medizinische Hochschule Hannover im Annastift, Hannover, Deutschland.

Background: Despite the growing clinical evidence "pro" kinematic alignment (KA) in primary total knee arthroplasty, the idea of this individualized implant positioning has not (yet) become established throughout the community. Many surgeons have concerns about the safety of the method and the universality of its application. Interestingly, comparative studies with unlimited indications for KA showed only little or no advantage over standard mechanical alignment in contrast to studies with strict indications showing a significant benefit. Read More

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The Posterolateral Instability Score (PoLIS) of the knee joint: a guideline for standardized documentation, classification, and surgical decision-making.

Knee Surg Sports Traumatol Arthrosc 2021 Mar 27;29(3):889-899. Epub 2020 May 27.

Gelenkchirurgie Orthopädie Hannover, Hannover, Germany.

Purpose: There has been a recent resurgence in interest in posterolateral instabilities of the knee joint. As this terminology comprises a large variety of pathologies, confusion and ambiguity in communication between surgeons and allied health professionals are generated. Consequently, accurate classification criteria are required to account for thorough preoperative diagnostics, surgical decision-making, and a standardized scientific documentation of injury severity. Read More

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The evaluation of the distance between the popliteus tendon and the lateral collateral ligament footprint and the implant in Total knee Arthroplasty using a 3-dimensional template.

BMC Musculoskelet Disord 2020 May 22;21(1):322. Epub 2020 May 22.

Department of Functional Morphology, Nihon University School of Medicine, Tokyo, Japan.

Background: The popliteus tendon (PT) or lateral collateral ligament (LCL) stabilizes the postero-lateral aspects of the knees. When surgeons perform total knee arthroplasty (TKA), PT and LCL iatrogenic injuries are a risk because the femoral attachments are relatively close to the femoral bone resection area. The purpose of this study was to evaluate the distance between the PT or LCL footprint and the TKA implant using a 3D template system and to evaluate any significant differences according to the implant model. Read More

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Arthroscopic pie-crusting release of the posteromedial complex of the knee for surgical treatment of medial meniscus injury.

BMC Musculoskelet Disord 2020 May 14;21(1):301. Epub 2020 May 14.

Henan Luoyang Orthopedic-Traumatological Hospital (Henan Orthopedic Hospital), No.80 Qingming southern Road, Luoyang, 471002, China.

Background: An arthroscopic narrow posteromedial gap of the knee may cause failure of a meniscus operation. The posteromedial complex (PMC) of the knee, including the posterior part of the medial collateral ligament (MCL) and the posterior oblique ligament (POL), has a restrictive effect on the opening of the posteromedial gap of the knee in the half-extension position. Thus, we evaluated the radiological and clinical results of pie-crusting release of the PMC for arthroscopic meniscal surgery in tight knees. Read More

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Percutaneous Superficial Medial Collateral Ligament Release Outcomes During Medial Meniscal Arthroscopy: A Systematic Review.

Arthrosc Sports Med Rehabil 2020 Apr 19;2(2):e153-e159. Epub 2020 Jan 19.

University Hospitals Sports Medicine Institute, Cleveland, Ohio, U.S.A.

Purpose: To systematically review the literature to better understand the technique, outcomes, and complications after percutaneous superficial medial collateral ligament (sMCL) lengthening during knee arthroscopy to address isolated medial meniscal pathology.

Methods: A systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines using a PRISMA checklist. The inclusion criteria consisted of English-language articles or articles with English-language translations documenting the use of percutaneous sMCL lengthening during arthroscopic knee surgery to treat isolated meniscal pathology (repair vs meniscectomy) with reported postoperative outcomes and complications. Read More

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Arthroscopically assisted and three-dimensionally modeled minimally invasive rim plate osteosynthesis via modified anterolateral approach for posterolateral tibial plateau fractures.

Knee 2020 Jun 1;27(3):1093-1100. Epub 2020 Apr 1.

Orthopaedic and Traumatology Unit, Ospedale Regionale di Lugano, EOC, Lugano, Switzerland.

Aim: The aim of this study was to describe a new, closed, arthroscopically-assisted reduction of posterolateral tibial plateau fractures with minimally invasive plate osteosynthesis using a plate pre-contoured over a 3D-model based on a CT-scan of the injured tibial plateau and positioned by using a minimal anterolateral approach.

Methods: A five to six centimeter long curvilinear incision was made over the Gerdy's tubercle. After subcutaneous dissection, the fascia was incised, the ileo-tibial band was split, and the dissection was extended posteriorly. Read More

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Reliability of a new scoring system for intraarticular mineralization of the knee: Boston University Calcium Knee Score (BUCKS).

Osteoarthritis Cartilage 2020 06 12;28(6):802-810. Epub 2020 Mar 12.

Department of Medicine, Boston University School of Medicine, Boston University, Boston, MA, USA.

Background: The role of intra-articular mineralization in osteoarthritis (OA) is unclear. Its understanding may potentially advance our knowledge of knee OA pathogenesis. We describe and assess the reliability of a novel computed tomography (CT) scoring system, the Boston University Calcium Knee Score (BUCKS) for evaluating intra-articular mineralization. Read More

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A Case of Medial Tibial Crest Friction Syndrome: A Rare Cause of Medial Knee Pain.

Clin J Sport Med 2021 Jul;31(4):e210-e212

Departments of Physical Medicine and Rehabilitation; and.

Abstract: Knee pain is among the most common problems in active patients, with common causes of medial knee pain including meniscal injury, osteoarthritis, medial collateral ligament (MCL) injury, and pes anserine bursopathy/distal hamstring tendinopathy. Some cases of medial knee pain are refractory to standard treatment options and may be caused by rare pathology. We present a case of medial knee pain secondary to medial tibial crest friction syndrome (MTCFS) in a 22-year-old male training for a sprint triathlon after rapidly increasing his training program. Read More

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Optimizing Anterior Cruciate Ligament (ACL) Outcomes: What Else Needs Fixing Besides the ACL?

Instr Course Lect 2020 ;69:653-660

This review focuses on the management of anterior cruciate ligament (ACL) reconstruction patients when other concomitant pathology may need to be addressed at the time of surgery. Given the role of the posterior horn of the medial meniscus in preventing osteoarthritis progression and contributing to knee stability, medial meniscus repair should always be considered when performing ACL reconstruction. Meniscal transplant may also be appropriate in select patients with normal knee alignment and absent of cartilage abnormalities in the compartment. Read More

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February 2020

Avulsion fracture of the medial head of the gastrocnemius muscle associated with multiple ligament injuries before closure of the growth plate: a case report.

J Med Case Rep 2019 Dec 25;13(1):382. Epub 2019 Dec 25.

Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima-city, Kagoshima, 890-8520, Japan.

Background: Avulsion fracture of the medial head of the gastrocnemius muscle is a very rare phenomenon. There are no reports of avulsion fractures associated with multiple ligament injuries before closure of the growth plate. The authors present a case of avulsion fracture of the insertion of the medial head of the gastrocnemius muscle associated with posterior cruciate ligament injury and an avulsion fracture of the medial collateral ligament at the femoral attachment. Read More

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December 2019

Editorial Commentary: Variations of National Health Systems: Time From Injury to Surgery Can Affect Anterior Cruciate Ligament-Medial Collateral Ligament Treatment Outcomes.

Mark G Siegel

Arthroscopy 2020 01;36(1):212-213

A recent investigation using the Swedish National Knee Registry large database showed that "The risk of ACL revision did not differ between HT and PT autografts in patients undergoing ACL reconstruction with a non-surgically treated MCL injury. However, the use of ST-G was associated with poorer two-year patient-reported knee function compared with the ST." However, the Swedish Health care system is so unique that the results may not be universally applicable. Read More

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January 2020

Cell sources of inflammatory mediators present in bone marrow areas inside the meniscus.

PLoS One 2019 20;14(12):e0226986. Epub 2019 Dec 20.

Serviço de Reumatologia e Doenças Ósseas Metabólicas, Hospital de Santa Maria, CHULN, Lisboa, Portugal.

Purpose: To demonstrate the production of inflammatory mediators by cells located in bone marrow spaces inside rodent menisci.

Methods: Mice subjected to transection of the medial collateral and anterior cruciate ligaments and meniscotomy (osteoarthritis model) or to a sham procedure, as well as non-operated (naive) mice and rats, had knee joints excised. Tissues were stained with hematoxylin-eosin and tartrate-resistant acid phosphatase (TRAP). Read More

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Pain and knee damage in male and female mice in the medial meniscal transection-induced osteoarthritis.

Osteoarthritis Cartilage 2020 04 10;28(4):475-485. Epub 2019 Dec 10.

Department of Experimental Anesthesiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Benjamin Franklin, Berlin, Germany. Electronic address:

Objective: To investigate sex effects on pain-related behaviors in the medial meniscal transection (MMT) knee osteoarthritis (OA) model.

Methods: Experiments were performed in male and female C57BL/6J mice (12/group/sex). MMT was induced by transection of the medial collateral ligament and the medial meniscus. Read More

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Ultrasonographic and Magnetic Resonance Images of Semimembranosus-Tibial Collateral Ligament Bursitis.

Pain Med 2020 03;21(3):644-646

Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan.

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Effect of sagittal femoral component alignment on biomechanics after mobile-bearing total knee arthroplasty.

J Orthop Surg Res 2019 Nov 28;14(1):400. Epub 2019 Nov 28.

Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.

Background: Recently, there has been increasing interest in mobile-bearing total knee arthroplasty (TKA). However, changes in biomechanics with respect to femoral component alignment in mobile-bearing TKA have not been explored in depth. This study aims to evaluate the biomechanical effect of sagittal alignment of the femoral component in mobile-bearing TKA. Read More

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November 2019

The lateral ankle ligaments are interconnected: the medial connecting fibres between the anterior talofibular, calcaneofibular and posterior talofibular ligaments.

Knee Surg Sports Traumatol Arthrosc 2020 Jan 22;28(1):34-39. Epub 2019 Nov 22.

Department of Pathology and Experimental Therapeutics, Human Anatomy and Embryology Unit, University of Barcelona, Barcelona, Spain.

Purpose: A deep knowledge of lateral ankle ligaments is necessary to understand its function, pathophysiology and treatment options. The ankle lateral collateral ligament is formed by the anterior talofibular ligament (ATFL), the calcaneofibular (CFL) and the posterior talofibular ligament (PTFL). Although previous studies have reported connections between these ligaments on its lateral side, no studies have specifically assessed connections on the medial side. Read More

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January 2020