Influence of bilateral hamstrings muscles shortening on some radiological parameters of lumbosacral spine / Aya Allah Gamal Ahmed Mahmoud ; Supervised Neveen Abdellatif Abdelraoof , Yasser Ramzy Lasheen , Ramy Edward Assad

Thesis (M.Sc.) - Cairo University - Faculty of Physical Therapy - Department of Basic Science

Background: Bilateral Hamstrings muscles shortening is a common condition found in symptomatic and asymptomatic subjects. Tightness of this muscle can play a role in cases of low back pain, postural deficits, lumbar spine disorders and sport related injuries. Purpose of this study: was to investigate the influence of bilateral hamstrings muscles shortening on some radiological parameters of lumbosacral spine. Materials and methods: Thirty healthy volunteers of both genders participated in this study. Subjects were classified into two equal groups; Group A: (Control group): was consisted of fifteen healthy subjects without hamstring shortening with mean age, weight, height and BMI were 26.8±4.34 years, 74.6±17.45 kg, 174±15.5 cm, and 24.28±2.67 kg/m2 respectively. Group B: (Study group): was consisted of fifteen subjects with bilateral shortening of the hamstrings with mean age, weight, height and BMI were 25.8±3.91 years, 66±9.69 kg, 164.2 ±7.43 cm and 24.38±2.81 kg/m2 respectively. The shortening of the hamstrings was assessed with Active Knee Extension Test, and radiological parameters of lumbosacral spine were assessed from X-Ray image using paxera viewer software. Results: This study showed that there was a statistical significant difference in some radiological parameters of lumbosacral spine (lumbar lordosis angle, lumbosacral angle and sacral inclination angle) in cases of bilateral hamstrings muscle shortening as p value was <0.05. Conclusion: Bilateral hamstrings muscle shortening has significant influence on lumbosacral spine angles (lumbar lordosis angle, lumbosacral angle and sacral inclination angle) and therefore treatment of bilateral hamstrings muscle shortening should be taken into account during preventing and setting up a rehabilitation program for low back pain, postural deficits and gait abnormalities

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