Hamstring injuries in elite Track and Field athletes

                 Hamstring injuries in elite  Track and Field athletes :

 In the current presentation  we will present our experience treating ttrack and field athletes with hamstring  injuries based  on objective clinical measurements (knee range of motion) and ultrasound (US) imaging findings with time to return to athletic activities.A new  clinical classification scheme for hamstring  injuries” will presented.

Material-Methods: All the athletes with an acute hamstring injury and no history of previous pathology in the posterior thigh or sciatica, were evaluated by measuring the knee active ROM (AROM) deficit compared to the uninjured side, 48 hours after their injury, by two examiners. An age matched group of controls was also examined. An US scan identified the muscle lesion (if present) and measurements (width and length of lesion expressed in cm) in the longitudinal view were performed. All athletes were managed nonoperatively with the same principals and rehabilitation protocol. The “full rehabilitation time” (time interval from the injury to full athletic activities) was recorded.  

Results: AROM measurements achieved substantial agreement between theexaminers. US scans showed that biceps femoris was injured in 75% of athletes. Values of width and length of the muscle lesions, measured by US scan, were significantly different  comparing mean values between different injury grades. About 45% of the athletes will have returned to full activities within 10 days after their injury and another 35% within 20 days (grades I and II), whereas 16% (grade III) will return after a month and 4% (grade IV) after two months.

Conclusion: Addition to history and clinical examination knee AROM deficit is an objective, reproducible and accurate measurement of the severity of  hamstring  injuries  in athletes. AROM deficit 48 hours after the injury was also predictive of the length of FRT. US imaging we think that is not necessary for I degree injuries following our clinical classification but it is  useful for high grade(III-IV) hamstring  injuries .

Βιβλιογραφία- References

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Malliaropoulos N,  MScThessis Academic Department of Sports Medicine QMUL 1999

Malliaropoulos N.Tsaklis P,Isokinetic  rehabilitation of hamstring injuries Hellenic Physiotherapy Journal 8:26-28,1994

Van Holsbeeck M, Introcasco J. Musculoskeletal ultrasound, 2nd ed. St Louis Mosby 2001

Jarvinen TA, Jarvinen TL, KaariainenM, et al. Muscle injuries: biology and treatment. Am J Sports Med 2005;33:745–64.

Hamstring Strains: Expediting Return to PlayThomas M. Best, MD, PhD; William E. Garrett Jr, MD, PhD THE PHYSICIAN AND SPORTS MEDICINE - VOL 24 - NO. 8 - AUGUST 96

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