INFLUENCE OF COORDINATIVE MOTOR ABILITY ON LOWER LIMB KINEMATICS IN YOUNG FOOTBALL PLAYERS: INJURY PREVENTION THROUGH WEARABLE INERTIAL SENSORS

The aim of the present study was to evaluate, during ordinary training, the lower limb kinematics in young football players, and to verify if the kinematic patterns are influenced by coordinative motor abilities. Fourteen healthy players (10y ± 2m) were enrolled. Each player performed two activities: a pre-defined path with typical movements of football training and matches; the Harre test to evaluated children’s coordinative motor ability. Wearable inertial sensors were used to assess lower limb joint kinematics and accelerations. Based on Harre test, players were divided into two groups, more coordinated and less coordinated. During all tasks performed, less coordinated players showed stiffer kinematic strategies and greater limb asymmetry, which are potentially risky patterns for non-contact (e.g. Anterior Cruciate Ligament) injury. Quantitative analysis on the field could contribute to deepening the biomechanical understanding of players’ motion and injury risk

The effect of autologous adipose derived mesenchymal stem cell therapy on juvenile osteochondritis dissecans of the patella: a case study

A prospective analysis of the effect of autologous adipose derived mesenchymal stem cell (AD-MSCs) therapy in the treatment of a juvenile osteochondritis dissecans (JOCD) of the patella. After failed conventional management of JOCD, a 13-year-old patient undergoes intra-articular MSC therapy. Repeated magnetic resonance imaging analyses showed regeneration of cartilage. In this report, the use of AD-MSCs, after unsuccessful conventional JOCD management, resulted in structural, functional and pain improvement. These results highlight the possibility to avoid surgery treatment in JOCD patella treatment

Will the Kaplan Fiber Complex Be the ''New Anterolateral Ligament''? Insights from Direct Surgical Exploration in the Context of ACL Injury and Reconstruction

According to the most popular scientific literature database in 2022, nearly 20 papers mentioning the "Kaplan Fiber" complex have been published in the last 2 years, highlighting the role of this anatomical structure in the context of anterior cruciate ligament tear [...]

TYPICAL RISK PATTERN FOR ANTERIOR CRUCIATE LIGAMENT INJURY IS LARGELY PRESENT IN COMPETITIVE ATHLETES: BIOMECHANICAL SCREENING THROUGH WEARABLE SENSORS

The purpose of this study was to investigate the presence of biomechanical risk patterns for Anterior Cruciate Ligament (ACL) injury in a healthy population during the execution of high-dynamics movements. Competitive athletes (n=34) performed a test battery, including single-leg landings, sprints, and cuts. Kinematics was assessed through wearable sensors, and movements exhibiting risk patterns were searched through multiple joint thresholds based on the current literature on ACL injury mechanism. A large portion of the athletes exhibited dangerous patterns in one (94%) or more movements (up to 11). The incidence was higher at initial foot contact and for the movement performed with the non-dominant limb. The early identification of at-risk athletes might support ACL professionals and promote preventative training strategies focused on the increase of movement quality

Unstable Type III Wrisberg-type Lateral Discoid Meniscus: All-inside Arthroscopic Repair:

Background: The Type III Wrisberg-type represents the rarest subtype of discoid meniscus. It exhibits a normal non-discoid "C"-shape with possible posterior horn hypertrophy, but meniscotibial ligaments and capsular restraints are lacking, leading to a clinical scenario of knee pain, popping, and catching due to meniscal hypermobility. Moreover, concomitant tears can be present due to repeated meniscal traumas. Indications: Type III Wrisberg-type lateral discoid meniscus with hypermobility, dislocation, or tear. Technique Description: Through standard arthroscopic portals, the meniscus is reduced in its anatomical position (if displaced). Abnormal mobility and anatomy should be noted. All-inside sutures are used in the posterior horn and body to stabilize the meniscus to the capsule and popliteus tendon. In the case of radial tears, horizontal stitches are used. Results: Patients are expected to return to sport approximately 4 to 5 months after the procedure with relief of pain, popping sensation, and knee locking. Conclusion: Arthroscopic all-inside repair is an effective treatment for unstable and displaced Type III Wrisberg-type lateral discoid meniscus. However, the diagnosis can be challenging, especially without frank meniscal dislocation

BIOMECHANICS AND JOINT COORDINATION IN ANTERIOR CRUCIATE LIGAMENT-INJURED FEMALE FOOTBALLERS DURING A 90° CHANGE OF DIRECTION

The purpose of this study was to investigate the biomechanical predictors of Anterior Cruciate Ligament (ACL) injury in female football players by means of 3D motion capture with vector coding. Women\u27s first-division healthy football players (n=16) performed a series of 90° change of directions. Biomechanics was collected through a marker-based optoelectronic system. In the next 2 consecutive football seasons, 4 ACL injuries were registered. Vector cording technique was used to compare angle-angle coordination between ACL-injured and non-injured players. ACL-injured players showed greater knee valgus (p=0.029) and internal rotation (p=0.017), external hip rotation (p=0.003), ankle eversion (

Development of a test battery to enhance safe return to sports after anterior cruciate ligament reconstruction

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The Use of 3D-Printed Custom-Made Implants as an Attractive Potential Alternative to the Treatment of Segmental Bone Loss in Foot and Ankle

The treatment of segmental tibial and ankle bone loss after radical surgery for chronic osteomyelitis is one of the most challenging problems encountered by orthopaedic surgeons [...]

The influence of gluteal muscle strength deficits on dynamic knee valgus: a scoping review

Anterior cruciate ligament (ACL) injuries are caused by both contact and non-contact injuries. However, it can be claimed that non-contact ones account approximately for 70% of all cases. Thus, several authors have emphasized the role of reduction of muscle strength as a modifable risk factor referred to non-contact ACL injury, with the latter being targeted by specifc training interventions. The present paper wants to review the available literature specifcally on the relationship between dynamic knee valgus, gluteal muscles (GM) strength, apart from the potential correlation regarding ACL injury. After a research based on MEDLINE via PubMed, Google scholar, and Web of Science, a total of 29 articles were collected and thus included. Additionally, this review highlights the crucial role of gluteal muscles in maintaining a correct knee position in the coronal plane during diferent exercises, namely walking, running, jumping and landin

No kinematical difference between ultra-congruent and medial-congruent total knee arthroplasty when implanted with mechanical alignment: an in vivo dynamic RSA study

Purpose: To explore in vivo kinematical behavior of the same total knee arthroplasty (TKA) cruciate-retaining (CR) femoral design with either medial-congruent (MC) or ultra-congruent (UC) inlay using model-based dynamic radiostereometric analysis (RSA). The hypothesis was that there would be comparable kinematics between the two groups. Methods: A cohort of 16 randomly selected patients (8 MC Persona Zimmer, 8 UC Persona Zimmer) was evaluated through dynamic radiostereometric analysis (RSA) at a minimum of 9 months after TKA, during the execution of a sit-to-stand. The antero-posterior (AP) translation of the femoral component and the AP translation of the low point of medial and lateral femoral compartments were compared through Student's t test (p < 0.05). Results: Both groups showed a medial pivot behavior, with a significantly greater anterior translation of the Low Point of the lateral compartment with respect to the medial compartment (MC medial range: 2.4 ± 2.4 mm; MC lateral range: 7.7 ± 3.0 mm; p < 0.001 - UC medial range: 3.3 ± 3.3 mm; UC lateral range: 8.0 ± 3.2 mm; p < 0.001). A statistically significant greater degree of flexion was clinically recorded at follow-up visit in the MC group respect to the UC group (126° vs 101°-p = 0.003). Conclusion: The present study did not show difference in the medial pivot behavior between ultra-congruent and medial-congruent total knee arthroplasty when implanted with mechanical alignment; however, the MC group demonstrated a greater degree of flexion. The MC design examined is a valid alternative to the UC design, allowing to achieve a screw-home movement restoration combined with a high flexion