pregnancy

Transient Osteoporosis Hip

Definition

 

Self limiting syndrome of unknown aetiology

- hip pain associated with osteoporosis of proximal femur 

 

DDx

 

AVN

- AVN of the hip in pregnancy is rare but possible

- TOH tends to be diffuse on MRI, while AVN is localised

- extends to neck and metaphysis

- transient osteoporosis has normal bone scan

 

Incidence

 

Rare

- M: F 3:1