DDx
CDH / LLD
Transient Synovitis/ Septic Arthritis
Perthes
SUFE
Inflammatory Arthritis
Timeline
0-2 DDH
2-5 septic arthritis
2-10 synovitis
5-10 perthes
10-15 SUFE
5 questions
Is limp due to pain?
What type of limp?
Is limp gradual / sudden?
Any localizing features?
Is the child unwell?
Examination
Gait
Standing
Supine on couch
Investigations
X-ray
Bone Scan
US / MRI
Haematological tests
FBE / ELFT's
ESR / CRP
RF / ANA