Clinical Research Directory

Inclusion Criteria: * Egyptian orthopedic surgeons and participants must have been working for at least 5 years. Exclusion Criteria: * any history of traumatic injuries of relevant regions within the past year such as whiplash injury, any history of surgical interventions of relevant regions within the past year, other medical conditions that may have a negative effect on the spine and upper extremities such as deformity, chronic diseases affecting the musculoskeletal system such as rheumatoid arthritis, osteoarthritis, and other connective tissue disorders (such as fibromyalgia), neurological and orthopedic disorders as well as sensory deficits and consumption of any sedative drug or alcohol within the past 48 hours.