TY  - JOUR
AU  - Apley, AG
AU  - Wientroub, S
DO  - doi:10.1302/0301-620X.63B1.7204473
UR  - https://doi.org/10.1302/0301-620X.63B1.7204473
TI  - The sagging rope sign in Perthes' disease and allied disorders
T2  - The Journal of Bone & Joint Surgery British Volume
VL  - 63-B
IS  - 1
PY  - 1981
SP  - 43
EP  - 47
ER  -