トレッスワン徴候

トレッスワン徴候 : 8 件
トレソーワン徴候 : 1 件

大腿骨頭すべり症で見られる骨盤部単純X線写真における徴候
正常大腿骨近位正面像において、大腿骨頭の外苑は頚部外側炎に引いた線の延長戦より外側にはみ出している。大腿骨頭すべり症においては骨頭外苑が線より内側にある。本徴候は大腿骨頭すべり症の初期診断に有用。(SOR.529)

定義

Trethowan's sign is positive in slipped femoral epiphysis.
If an anteroposterior view of the hip joint is taken then a line drawn along the superior surface of the neck should pass through the femoral head. If the line remains superior to the femoral head then this is termed Trethowan's sign.

Slipped epiphysis occurs in adolescents, with displacement of the upper femoral epiphysis at the growth plate. The majority are gradual onset, frequently with a history of trauma. The leg is externally rotated, and shortened. The hip is limited in abduction and internal rotation. Diagnosis is made on X-Ray with the line of the superior margin of the neck of femur, remaining superior to the head, rather than passing through it. (Trethowan's sign). Hip involvement in Juvenile chronic arthritis depends on the specific subtype of disease involvement.