Biomechanical testing of virtual meniscus implants made from a bi-phasic silk fibroin-based hydrogel and polyurethane via finite element analysis.

Objective: To investigate the suitability of different material compositions and structural designs for 3D-printed meniscus implants using finite element analysis (FEA) to improve joint function after meniscal injury and guide future implant development.

Design: This experimental study involved in-silico testing of a meniscus model developed from two materials: a specially formulated hydrogel composed of silk fibroin (SF), gelatine, and decellularized meniscus-derived extracellular matrix (MD-dECM), and polyurethane (PU) with stiffness levels of 54 and 205 MPa. Both single-material implants and a two-volumetric meniscus model with an SF/gelatine/MD-dECM core and a PU shell were analysed using FEA to simulate the biomechanical performance under physiological conditions.

[Lateral meniscus transplantation with allograft, a good alternative for the management of postmeniscectomy syndrome in young patients. Presentation of a case].

Meniscal injuries represent one of the main causes of intra-articular knee pain, especially in young patients, athletes or those with a high demand for physical activity; representing a challenge for the arthroscopist surgeon due to the great complexity that some of these injuries can present. Currently, the advances that have been implemented in arthroscopy allow us to repair meniscal injuries that in the past were considered irreparable. Although our priority is to preserve as much of the meniscus as possible, there are cases in which the injury reaches such complexity that this is impossible, with partial or total meniscectomy being the only therapeutic option.

Meniscus Injury Induces Patellofemoral Osteoarthritis Development Mediated by Synovitis and Gait Kinematics: A Preclinical Study.

Objective: To investigate whether meniscal injury leads to the development of patellofemoral (PF) osteoarthritis (PFOA) and to explore how synovitis and gait kinematics mediate this relationship.

Methods: Fifty-four male Wistar rats (12 weeks old) were randomly assigned to the control, sham, or destabilized medial meniscus (DMM) groups. The rats were subjected to gait analysis to assess the kinematic changes at 2, 4, and 8 weeks postoperatively.

An Olympic Skier Returning to Competition After a Complex Knee Reconstruction: A Case Report.

Alpine skiing is a high-risk sport due to the possibility of severe injuries, particularly complex knee injuries. The most common injuries are ruptures of the anterior cruciate ligament (ACL), meniscal tears and fractures of the lower limbs. Managing these injuries requires ligament reconstructions and specific surgical interventions to optimize rehabilitation and ensure a return to competition.

Abnormal patella height may be an independent risk factor in meniscal tears: a retrospective study in paediatric patients.

Purpose: The literature on factors predisposing to meniscal tears in the paediatric population focuses on concomitant injuries such as anterior cruciate ligament rupture (ACL) or abnormal meniscus morphology such as discoid menisci. Patella alta has been associated with ACL ruptures but its association with meniscal tears has not been described. The purpose of our study was to evaluate whether abnormal patella height is associated with isolated meniscus tears in skeletally immature patients METHODS: We retrospectively analysed all patients under 16 years of age who had an isolated meniscal tear diagnosis confirmed on arthroscopic surgery.

Association Between Insufficient Restoration of Meniscal Tension During Surgical Repair of Medial Meniscus Root Tear and Surgical Outcomes: Clinical Implication of Curtain-Cliff Sign.

Background: Despite the clinical benefits over nonoperative treatment or meniscectomy, the clinical outcomes of surgical repair for medial meniscus posterior root tear (MMRT) remain suboptimal, which may be attributed to the insufficient restoration of meniscal hoop tension during surgery.

Purpose: To analyze the clinical outcomes of surgical repair of MMRT based on the appearance of the meniscal tension observed immediately after surgery.

Study Design: Cohort study; Level of evidence, 3.

Anterior cruciate ligament reconstruction with suture tape augmentation in the high-risk, young population.

Introduction: This study evaluated patient-reported outcome measures and reinjury rates in higher-risk adolescents and young adults aged 14-25 years old following Anterior Cruciate Ligament reconstruction using autograft with suture tape augmentation (SA ACLR).

Materials And Methods: We performed a retrospective case series of patients aged 14-25 who underwent SA ACLR by a single surgeon between 2016 and 2020. After a minimum of 2 years of follow-up, data was collected on reinjury and patient reported outcome measures, including Knee Injury and Osteoarthritis Outcome Score (KOOS), Marx Activity Rating Scale (MARS), Single Assessment Numeric Evaluation (SANE), and Visual Analog Pain Scale (VAPS).

[Clinical diagnostic study of Ramp lesion of medial meniscus based on knee MRI at 90° flexed position].

Objective: To evaluate the clinical diagnostic value of knee MRI at 90° flexed position for Ramp lesions of medial meniscus.

Methods: A total of 228 patients with knee pain as the main complaint who were admitted between September 2021 and September 2023 was selected as the research subjects, of which 51 patients met the selection criteria and were enrolled in the study. There were 31 males and 20 females with an average age of 38.

Strategies for Preventing Tunnel Convergence in Multiligament Knee Injury Reconstructions.

Background: Multiligament knee injuries (MLKIs) are complex and heterogeneous, often associated with concomitant injuries, and necessitates precise treatment strategies.

Preoperative Management: Effective preoperative management in MLKIs requires comprehensive evaluation, starting with a detailed patient history to identify the mechanisms of injury and prior treatments. Physical examination assesses for knee stability, while imaging techniques including magnetic resonance imaging (MRI) and radiographs detail ligament, cartilage, and meniscal injuries to identify all injured structures.

Early Functional Outcome After Anterior Cruciate Ligament Reconstruction in Patients Using Post-Operative Brace or No Brace: A Prospective Observational Case-Control Study.

Background: The use of rehabilitative knee braces after anterior cruciate ligament reconstruction (ACLR) has been controversial. This study aimed to evaluate the early functional outcome associated with post-ACLR brace use.

Methods: This prospective observational case-control study was conducted at AKB Center for Arthroscopy, Sports Injury, and Regenerative Medicine, B&B Hospital, Lalitpur, Nepal.

Biomechanical impact of progressive meniscal extrusion on the knee joint: a finite element analysis.

Background: While measuring meniscal extrusion quantitatively is an early risk factor for knee osteoarthritis (KOA), the biomechanics involved in this process are not well understood. This study aimed to investigate the effects of varying degrees of medial and lateral meniscal extrusion and their material softening on knee osteoarthritis progression.

Methods: Finite element analysis (FEA) was utilized to simulate varying degrees of meniscal extrusion (1-5 mm) in 72 knee joint models, representing progressive meniscal degeneration and material softening due to injury.

Lower Surgical Volume Reduces the Odds of Performing Meniscus Repair for Tears During Primary Anterior Cruciate Ligament Reconstruction.

Purpose: To investigate the influence of surgical volume, and various patient-, injury-, and surgery-related factors, on meniscal treatment strategies in primary anterior cruciate ligament reconstruction (ACLR).

Methods: This retrospective cohort study analyzed patients with concomitant meniscal injuries undergoing primary ACLR, from 2008 to 2022, using data from the Swedish National Knee Ligament Registry. Surgeons and clinics were stratified by total caseload (cutoff: 50 ACLRs/surgeon, 500 ACLRs/clinic) and annual volume (cutoff: 29 ACLRs/year/surgeon, 56 ACLRs/year/clinic).

Osteoarthritis After Anterior Cruciate Ligament Reconstruction: A Systematic Review of Contributing Factors and Potential Treatments.

Anterior cruciate ligament (ACL) injuries result in abnormal knee motion and long-term joint degradation. ACL reconstruction (ACLR) is done with the aim of restoring normal knee kinematics and slowing the joint degradation process. It does appear that this inevitably happens and can be impacted by a multitude of factors.

Flag Sign: A Case Report of an Unusual Magnetic Resonance Imaging Finding of a Medial Meniscal Root Fragment in an Adolescent Water Polo Player.

Introduction: A meniscus tear ranks among the most common sports-related injuries, especially among athletes. Sudden, twisting movements, such as pivoting to catch a ball, usually in contact sports, and can tear the meniscus. Magnetic resonance imaging (MRI) technology is extensively utilized for identifying meniscal tears.

Low-Field Magnetic Resonance Imaging for the Detection of Medial Meniscal Lesions in Cranial Cruciate-Deficient Stifle Joints in Dogs.

Background: The aim of this study was to substantiate the ability of noninvasive low-field magnetic resonance imaging (lfMRI) to accurately depict meniscal lesions, thereby establishing lfMRI as a viable option for the diagnosis of meniscal pathology.

Study Design: This was a prospective, controlled study.

Materials And Methods: In each of 57 stifle joints, 5 predefined lfMRI sequences using a 0.

Extracellular vesicles from cartilage progenitors stimulate type II collagen expression and wound healing in meniscal cells.

Knee meniscus tearing is a common orthopaedic injury that can heal poorly if left untreated, increasing the risk of post-traumatic Osteoarthritis. Intraarticular injection of human cartilage-derived progenitor cells (CPCs) has been shown to promote meniscus healing after injury. However, the mechanism by which CPCs stimulated this effect was unclear.

The impact of concomitant meniscal surgery on the clinical outcomes of anterior cruciate ligament reconstruction.

Aims: The aim of this study was to compare patient-reported outcomes (PROMs) following isolated anterior cruciate ligament reconstruction (ACLR), with those following ACLR and concomitant meniscal resection or repair.

Methods: We reviewed prospectively collected data from the UK National Ligament Registry for patients who underwent primary ACLR between January 2013 and December 2022. Patients were categorized into five groups: isolated ACLR, ACLR with medial meniscus (MM) repair, ACLR with MM resection, ACLR with lateral meniscus (LM) repair, and ACLR with LM resection.