Objectives: Previous research describes dynamic stability and functional strength as key aetiological risk factors associated with lower limb non-contact musculoskeletal injury. Due to the multifactorial nature of injury risk, relationships between the two factors will inform injury management and training design.
Methods: A total of 59 elite academy footballers from two English premier league category 1-status academies completed the study. All players completed measures of eccentric hamstring strength and dynamic stability. Relationships between directional stability (Anteroposterior (Ant), Posteromedial (PM) and Posterolateral (PL)) and eccentric strength metrics (PkT, AvT, PkF, AvF and Ɵ) bilaterally were identified for analysis.
Results: Significant correlations were identified bilaterally for functional hamstring strength metrics and PM and PL stability (P ≤. 0.05). No significant relationships were identified between anterior stability and eccentric hamstring strength parameters (P > 0.05).
Conclusions: Eccentric hamstring strength has a positive influence on directional stability through two planes, PM and PL. The lack of influence of eccentric hamstring strength on Ant directional stability could be attributed to increased ACL risk. Careful consideration of the significance of the relationships between eccentric hamstring strength and directional stability must be given when quantifying injury risk in elite academy footballers.
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http://dx.doi.org/10.1080/24733938.2020.1782458 | DOI Listing |
J Orthop
June 2025
São Paulo University, Av. Dr. Arnaldo 455, São Paulo, SP, Brazil.
Background And Aims: Interest in repairing ruptured anterior cruciate ligaments (ACL) has resurged, with suture tape augmentation (internal brace, ACL-IB) emerging as a prominent technique. However, the efficacy of ACL-IB compared to ACL reconstruction (ACL-R) remains unclear. We conducted a meta-analysis to address this gap.
View Article and Find Full Text PDFCureus
November 2024
Intervention and Musculoskeletal Rehabilitation, Centro de Reabilitação do Norte, Unidade Local de Saúde (ULS) Gaia/Espinho, Vila Nova de Gaia, PRT.
Hamstring injuries (HSIs) are common among athletes, particularly in high-speed sports, and are frequently associated with prolonged recovery periods and a high recurrence rate. This study presents a 36-year-old male with sciatica-like symptoms following an acute hamstring tear during an amateur football match. The patient experienced this pain two weeks after the injury, suggesting potential sciatic nerve involvement.
View Article and Find Full Text PDFJ Sports Sci
December 2024
Department of Biomechanics, Performance Analysis and Strength & Conditioning, Olympic Training & Testing Centre Westphalia, Dortmund, Germany.
The difficulties of rehabilitation after anterior cruciate ligament (ACL) injuries, subsequent return-to-sport (RTS) let alone achieving pre-injury performance, are well known. Isokinetic testing is often used to assess strength capacities during that process. The aim of the present machine learning (ML) approach was to examine which isokinetic data differentiates athletes post ACL reconstruction (ACLR) and healthy controls.
View Article and Find Full Text PDFOrthop Traumatol Surg Res
December 2024
Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix-Rousse Hospital, Lyon University Hospital, Lyon, France; LIBM - EA 7424, Interuniversity Laboratory of Biology of Mobility, Claude Bernard Lyon 1 University, Lyon, France.
Purpose: For the athlete, anterior Cruciate Ligament (ACL) rupture and its surgical management are often a turning point in their career. Success and time to return to sport are essential parameters for athletes and their support staff, so it is critical to understand the prognostic factors influencing return to sport after anterior cruciate ligament reconstruction (ACLR). The aim of this study was to determine the influence of hamstring muscle composition on muscle power following ACLR with autogenous hamstring grafts.
View Article and Find Full Text PDFKnee Surg Sports Traumatol Arthrosc
December 2024
Department of Orthopaedics, Stockholm South Hospital, Karolinska Institutet, Stockholm, Sweden.
Purpose: To evaluate factors associated with revision anterior cruciate ligament reconstruction (ACLR) within 5 years of primary ACLR in children and adolescents.
Methods: Children and adolescents (age <20 years at surgery) who underwent primary hamstring tendon ACLR at the Capio Artro Clinic, Stockholm, Sweden, between January 2005 and December 2018 were identified. Revision ACLR within 5 years of primary ACLR was captured in the Swedish National Knee Ligament Registry.
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