Do Not Forget Proximal Hamstring Avulsions
Diego Edwards1*, Miguel Carrasco1 and Consuelo Carrasco2
1Clinica Alemana, Universidad del Desarrollo, Sports Medicine, Santiago, Chile
2Faculty of Medicine, Universidad Los Andes, Santiago, Chile
*Corresponding Author: Diego Edwards, Traumatology and Orthopaedic Surgery Department, Clinica Alemana, Universidad del Desarrollo, Sports Medicine, Santiago, Chile.
August 27, 2021; Published: September 23, 2021
Proximal hamstring avulsions (PHA) are rare lesions that can cause permanent functional alterations and a very high risk of re-tear (12% to 31%) . They are present in 9 - 12% of all lesions in this muscle group  and most often occur in athletes who require rapid acceleration (running, hurdling) or “ballistic" movements (skiing, skating, weight lifting) [3,4].
Proximal hamstrings comprise 3 tendons: the semitendinosus, the long head of the biceps femori and the semimembranosus (the latter 2, merged at their origin by the conjoined tendon). The mechanism of injury corresponds to eccentric contraction of the PH when trying to resist a fall, with the hip in flexion and the knee in extension. Acute pain is usually reported in the posterior thigh, sometimes accompanied by an audible pop and in some occasions with numbness and tingling in the sciatic nerve distribution .
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