1. Woodley, SJ, Mercer, SR: Hamstring muscles: Architecture and innervation. Cells Tissues Organs 2005; 179(3): 125–141.
Google Scholar | Crossref | Medline | ISI2. Thelen, DG, Chumanov, ES, Hoerth, DM, et al: Hamstring muscle kinematics during treadmill sprinting. Med Sci Sports Exerc 2005; 37(1): 108–114.
Google Scholar | Crossref | Medline3. Maffulli, N, Oliva, F, Frizziero, A, et al: ISMuLT guidelines for muscle injuries. Muscles Ligaments Tendons J 2014; 3(4): 241–249.
Google Scholar | Crossref | Medline4. Chan, O, Del Buono, A, Best, TM, et al: Acute muscle strain injuries: A proposed new classification system. Knee Surg Sports Traumatol Arthrosc 2012; 20(11): 2356–2362.
Google Scholar | Crossref | Medline | ISI5. Lempainen, L, Johansson, K, Banke, IJ, et al: Expert opinion: Diagnosis and treatment of proximal hamstring tendinopathy. Muscles Ligaments Tendons J 2015; 5(1): 23–28.
Google Scholar | Crossref | Medline6. Lempainen, L, Banke, IJ, Johansson, K, et al: Clinical principles in the management of hamstring injuries. Knee Surg Sports Traumatol Arthrosc 2015; 23(8): 2449–2456.
Google Scholar | Crossref | Medline7. Pollock, N, James, SL, Lee, JC, et al: British athletics muscle injury classification: A new grading system. Br J Sports Med 2014; 48(18): 1347–1351.
Google Scholar | Crossref | Medline | ISI8. Valle, X, Tol, H, Hamilton, B: Muscle injury classification. From muscle injuries clinical guide 3.0, https://muscletechnetwork.org/wp-content/uploads/2015/04/MUSCLE-INJURIES-CLINICAL-GUIDE-3.0-LAST-VERSION.pdf (accessed January 2015).
Google Scholar9. Ekstrand, J, Hagglund, M, Walden, M: Epidemiology of muscle injuries in professional football (soccer). Am J Sports Med 2011; 39(6): 1226–1232.
Google Scholar | SAGE Journals | ISI10. Woods, C, Hawkins, RD, Maltby, S, et al: The football association medical research programme: An audit of injuries in professional football—Analysis of hamstring injuries. Br J Sports Med 2004; 38(1): 36–41.
Google Scholar | Crossref | Medline | ISI11. Järvinen, TAH, Järvinen, M, Kalimo, H: Regeneration of injured skeletal muscle after the injury. Muscles Ligaments Tendons J 2013; 3(4): 337–345.
Google Scholar | Crossref | Medline12. Ahmad, CS, Redler, LH, Ciccotti, MG, et al: Evaluation and management of hamstring injuries. Am J Sports Med 2013; 41(12): 2933–2947.
Google Scholar | SAGE Journals | ISI13. Ekstrand, J, Hagglund, M, Walden, M: Injury incidence and injury patterns in professional football: The UEFA injury study. Br J Sports Med 2011; 45(7): 553–558.
Google Scholar | Crossref | Medline | ISI14. Beltran, J, Matityahu, A, Hwang, K, et al: The distal semimembranosus complex: Normal MR anatomy, variants, biomechanics and pathology. Skeletal Radiol 2003; 32(8): 435–445.
Google Scholar | Crossref | Medline | ISI15. Sato, K, Nimura, A, Yamaguchi, K, et al: Anatomical study of the proximal origin of hamstring muscles. J Orthop Sci 2012; 17(5): 614–618.
Google Scholar | Crossref | Medline | ISI16. Brukner, P, Connell, D: “Serious thigh muscle strains”: Beware the intramuscular tendon which plays an important role in difficult hamstring and quadriceps muscle strains. Br J Sports Med 2016; 50(4): 205–208.
Google Scholar | Crossref | Medline17. Lempainen, L, Kosola, J, Pruna, R, et al: Central tendon injuries of hamstring muscles: Case series of operative treatment. Orthop J Sports Med 2018; 6(2): 2325967118755992.
Google Scholar | SAGE Journals | ISI18. Garrett, WE, Califf, JC, Bassett, FH: Histochemical correlates of hamstring injuries. Am J Sports Med 1984; 12(2): 98–103.
Google Scholar | SAGE Journals | ISI19. Dolman, B, Verrall, G, Reid, I: Physical principles demonstrate that the biceps femoris muscle relative to the other hamstring muscles exerts the most force: Implications for hamstring muscle strain injuries. Muscles Ligaments Tendons J 2014; 4(3): 371–377.
Google Scholar | Medline20. Branch, EA, Anz, AW: Distal insertions of the biceps femoris—A quantitative analysis. Orthop J Sports Med 2015; 3(9): 2325967115602255.
Google Scholar | SAGE Journals | ISI21. Blakeney, WG, Zilko, SR, Edmonston, SJ, et al: A prospective evaluation of proximal hamstring tendon avulsions: Improved functional outcomes following surgical repair. Knee Surg Sports Traumatol Arthrosc 2017; 25(6): 1943–1950.
Google Scholar | Crossref | Medline | ISI22. Stevens, MA, El-Khoury, GY, Kathol, MH, et al: Imaging features of avulsion injuries. Radiographics 1999; 19(3): 655–672.
Google Scholar | Crossref | Medline | ISI23. Sivasundaram, L, Matcuk, GR, White, EA, et al: Partial semitendinosus tendon tear in a young athlete: A case report and review of the distal semitendinosus anatomy. Skeletal Radiol 2015; 44(7): 1051–1056.
Google Scholar | Crossref | Medline24. Askling, C, Tengvar, M, Saartok, T, et al: Sports related hamstring strains-two cases with different etiologies and injury sites. Scand J Med Sci Sports 2000; 10(5): 304–307.
Google Scholar | Crossref | Medline | ISI25. Lempainen, L, Sarimo, J, Mattila, K, et al: Distal tears of the hamstring muscles: Review of the literature and our results of surgical treatment. Br J Sports Med 2007; 41(2): 80–83; discussion83.
Google Scholar | Crossref | Medline26. Fournier-Farley, C, Lamontagne, M, Gendron, P, et al: Determinants of return to play after the nonoperative management of hamstring injuries in athletes: A systematic review. Am J Sports Med 2016; 44(8): 2166–2172.
Google Scholar | SAGE Journals | ISI27. Arner, JW, McClincy, MP, Bradley, JP: Hamstring injuries in athletes: Evidence-based treatment. J Am Acad Orthop Surg 2019; 27(23): 868–877.
Google Scholar | Crossref | Medline28. Malliaropoulos, N, Papacostas, E, Kiritsi, O, et al: Posterior thigh muscle injuries in elite track and field athletes. Am J Sports Med 2010; 38(9): 1813–1819.
Google Scholar | SAGE Journals | ISI29. Valle, X, Malliaropoulos, N, Parraga Botero, JD, et al: Hamstring and other thigh injuries in children and young athletes. Scand J Med Sci Sports 2018; 28(12): 2630–2637.
Google Scholar | Crossref | Medline30. Entwisle, T, Ling, Y, Splatt, A, et al: Distal musculotendinous T junction injuries of the biceps femoris: An MRI case review. Orthop J Sports Med 2017; 5(7): 2325967117714998.
Google Scholar | SAGE Journals | ISI31. Greenky, M, Cohen, SB: Magnetic resonance imaging for assessing hamstring injuries: Clinical benefits and pitfalls—A review of the current literature. Open Access J Sports Med 2017; 8: 167–170.
Google Scholar | Crossref | Medline32. Brukner, P, Nealon, A, Morgan, C, et al: Recurrent hamstring muscle injury: Applying the limited evidence in the professional football setting with a seven-point programme. Br J Sports Med 2014; 48(11): 929–938.
Google Scholar | Crossref | Medline | ISI33. Henderson, G, Barnes, CA, Portas, MD: Factors associated with increased propensity for hamstring injury in English Premier League soccer players. J Sci Med Sport 2010; 13(4): 397–402.
Google Scholar | Crossref | Medline | ISI34. van Beijsterveldt, AM, van de Port, IG, Vereijken, AJ, et al: Risk factors for hamstring injuries in male soccer players: A systematic review of prospective studies. Scand J Med Sci Sports 2013; 23(3): 253–262.
Google Scholar | Crossref | Medline | ISI35. Engebretsen, AH, Myklebust, G, Holme, I, et al: Intrinsic risk factors for hamstring injuries among male soccer players: A prospective cohort study. Am J Sports Med 2010; 38(6): 1147–1153.
Google Scholar | SAGE Journals | ISI36. Hagglund, M, Walden, M, Ekstrand, J: Previous injury as a risk factor for injury in elite football: A prospective study over two consecutive seasons. Br J Sports Med 2006; 40(9): 767–772.
Google Scholar | Crossref | Medline | ISI37. Fousekis, K, Tsepis, E, Poulmedis, P, et al: Intrinsicrisk factors of non-contact quadricepsand hamstring strains in soccer: A prospective study of 100 professional players. Br J Sports Med 2011; 45(9): 709–714.
Google Scholar | Crossref | Medline | ISI38. Tokutake, G, Kuramochi, R, Murata, Y, et al: The risk factors of hamstring strain injury induced by high-speed running. J Sports Sci Med 2018; 17(4): 650–655.
Google Scholar | Medline39. Wood, DG, Packham, I, Trikha, SP, et al: Avulsion of the proximal hamstring origin. J Bone Joint Surg Am 2008; 90: 2365–2374.
Google Scholar | Crossref | Medline | ISI40. Piposar, JR, Vinod, AV, Olsen, JR, et al: High-grade partial and retracted (<2 cm) proximal hamstring ruptures nonsurgical treatment revisited. Orthop J Sports Med 2017; 5(2): 2325967117692507.
Google Scholar | SAGE Journals | ISI41. Aldridge, SE, Heilpern, GN, Carmichael, JR, et al: Incomplete avulsion of the proximal insertion of the hamstring: Outcome two years following surgical repair. J Bone Joint Surg Br 2012; 94(5): 660–662.
Google Scholar | Crossref | Medline42. Orava, S, Kujala, UM: Rupture of the ischial origin of the hamstring muscles. Am J Sports Med 1995; 23(6): 702–705.
Google Scholar | SAGE Journals | ISI43. Sandmann, GH, Hahn, D, Amereller, M, et al: Mid-term functional outcome and return to sports after proximal hamstring tendon repair. Int J Sports Med 2016; 37(7): 570–576.
Google Scholar | Crossref | Medline44. Sarimo, J, Lempainen, L, Mattila, K, et al: Complete proximal hamstring avulsions: A series of 41 patients with operative treatment. Am J Sports Med 2008; 36(6): 1110–1115.
Google Scholar | SAGE Journals | ISI45. McGregor, C, Ghosh, S, Young, DA, et al: Traumatic and overuse injuries of the ischial origin of the hamstrings. Disabil Rehabil 2008; 30(20-22): 1597–1601.
Google Scholar | Crossref | Medline | ISI46. Cooper, DE, Conway, JE: Distal semitendinosus ruptures in elite-level athletes: Low success rates of nonoperative treatment. Am J Sports Med 2010; 38(6): 1174–1178.
Google Scholar | SAGE Journals | ISI47. Hallen, A, Ekstrand, J: Return to play following muscle injuries in professional footballers. J Sports Sci 2014; 32(13): 1229–1236.
Google Scholar | Crossref | Medline | ISI48. Kayani, B, Ayuob, A, Begum, F, et al: Surgical repair of distal musculotendinous T junction injuries of the biceps femoris. Am J Sports Med 2020; 48(10): 2456–2464.
Google Scholar | SAGE Journals | ISI49. Knapik, DM, Metcalf, KB, Voos, JE: Isolated tearing and avulsion of the distal biceps femoris tendon during sporting activities: A systematic review. O