Which of the following movements is restricted in Perthe’s disease?
There is limitation of abduction & internal rotation due spasm of muscles. 
Other signs : 

antalgic gait * muscle spasm detected by roll test 
* proximal thigh atrophy 
* short stature Symptoms: painless limp, mild pain in the hip or anterior thigh or knee ,onset of pain may be acute or insidious
Adduction & external rotation
Abduction & external rotation
Adduction & internal rotation
Abduction & internal rotation