Age	Pain	Probable Diagnosis
Toddler (<3 years)	+	Toddler fracture, Foreign objects, Septic arthritis, Reactive arthritis, Transient synovitis, Osteomyelitis, Neuroblastoma.
Toddler (<3 years)	−	DDH, Limb deficiency, Demyelinating neuropathy, Cerebral palsy, Muscular dystrophy, Spina bifida, Clubfoot, Arthrogryposis, Coxa vara, Hindfoot deformities.
Child (3 - 10 years)	+	Legg-Calvé-Perthes disease, Stress fractures, Kohler disease, Osgood-Schlatter disease, Transient synovitis, Osteomyelitis, Sever disease, Appendicitis, Psoas abscess, Reactive arthritis.
Child (3 - 10 years)	−	Osteochondrosis, Neuromuscular disorders, Leg-length discrepancy, Lyme disease, Charcot-Marie-Tooth disease, Equinus contracture, Idiopathic tight Achilles tendon.
Adolescent (>10 years)	+	Slipped capital femoral epiphysis, Juvenile idiopathic arthritis, Overuse injury, Stress fractures, Osteochondritis dissecans, Legg-Calvé-Perthes disease, Reactive arthritis, Diskitis, Accessory navicular, Discoid meniscus, Chondromalacia patellae.
Adolescent (>10 years)	−	Tumors, Malignancies, Tarsal coalition, Ankylosis of the knee joint.