Acute rheumatic fever
Developmental dysplasia of hip
Femur fracture<unk> 
Legg-Calve-Perthes disease
Septic<unk>  of the hip (peds)
Lyme disease<unk> 
Slipped capital femoral epiphysis
Transient (toxic) synovitis
Osteosarcoma
Lyme disease<unk> 
Fibromyalgia<unk> 
Lyme disease
Osteoarthritis
Psoriatic<unk> 
Reactive poststreptococcal<unk> 
Rheumatoid<unk> 
Rheumatic fever
Serum sickness
Systemic lupus erythematosus
Serum sickness–like reactions
Viral<unk>
Juvenile idiopathic arthritis
Acute rheumatic fever
Reactive arthritis
Developmental dysplasia of hip
Rheumatoid arthritis
Femur fracture
Reactive poststreptococcal arthritis
Systemic lupus erythematosus