Drehmann sign is a widely used test in orthopedics examining the functionality of the hip joint. Drehmann sign is positive if an unavoidable passive external rotation of the hip occurs when performing a hip flexion. In addition, an internal rotation of the respective hip joint is either not possible or accompanied by pain when forcefully induced. A positive Drehmann sign is a typical clinical feature in slipped capital femoral epiphysis (SCFE), the impingement syndrome of the acetabulum-hip or in osteoarthritis of the hip joint.
It was first described by the Breslau born German physician Gustav Drehmann (b. 1869, d. 1932).
See also
Klein's line Southwick angle
References