this study will be conducted to investigate the risk of work-related musculoskeletal disorders due to the postural load among physical therapists

Musculoskeletal disorders (MSDs)refer to an array of signs and symptoms involving various areas of the musculoskeletal system. The clinical manifestations of MSDs include pain, swelling/redness, stiffness, and weakness or loss of function. Such manifestations affect the muscles, joints, tendons, nerves, and supporting structures in various body parts. Work-related musculoskeletal disorders (WMSDs) have a high significant occupation problem worldwide. One-third of all injuries in a day occurs due to occupational hazards are WMSDs reports The Bureau of Labor Statistics.Previous works have shown that parameters such as the environment , the level of experience , the country of origin ,the institution in which the professional evolves had an influence on the level of risk of WMSD prevalence. Many studies have addressed the issue of WMSD in PPTs. The prevalence of MSDs by body area is the most commonly used analysis . The results showed that the areas most at risk for MSDs are the neck, lower back and upper extremities. However, the studies reported different results. Indeed, the prevalence vary between 5.3 % and 61 % , between 14.3 % and 62 % and 8 % and 83 % respectively for the neck, low back and thumb. These differences in prevalence have also been observed in other areas such as the shoulder or lower extremity . Studies have focused on risk factors responsible for the occurrence of MSD or which reinforce the associated symptoms. two hundreds supjects will be conducted to this study

Inclusion Criteria:

• Males and females Egyptian physical therapists at Al Kasr Elaini Hospital and at the outpatient clinics of the Faculty of Physical Therapy, Cairo University, and Badr university, will be included in the study.
• Age ranges from 21-30 years old of physical therapists and their BMI is between 18 and 24.9.
• 4 hours of work daily at least
• No working experience to 2 years of experience only

Exclusion Criteria:

• Congenital musculoskeletal disorders
• Fractures
• Previous musculoskeletal surgery
• Cardiovascular disease
• Pulmonary disease
• Diabetes
• Neurological disease

217 Males and females Egyptian physical therapists at Al Kasr Elaini Hospital and at the outpatient clinics of the Faculty of Physical Therapy, Cairo University, and Badr university, will be included in the study.