A head within a head sign: a manifestation of healing nutritional rickets.
The epiphyseal perichondrium is calcified during the rachitic healing process and visible radiologically as 'a head within a head' around the proximal femoral epiphysis in young children. Seen in isolation, these radiographs can pose diagnostic dilemmas.
Specialist, Department of Pediatric Orthopaedics, Chacha Nehru Bal Chikitsalaya, India rachna_anila@yahoo.co.in.
Anil
A
Agarwal
Associate Professor, Department of Obstetrics and Gynaecology, UCMS and GTB Hospital, India.
Rachna
R
Agarwal
D000077:Acetabulum / Q000000981:diagnostic imaging*; D002114:Calcinosis / Q000000981:diagnostic imaging*; D002675:Child, Preschool; D005270:Femur Head / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D011859:Radiography; D012279:Rickets / Q000000981:diagnostic imaging*
Rickets; proximal femoral epiphysis