Development
Delay in motor area or global
3m: unable to lift head, stiff legs, asymmetry
6m: unable to lift head, floppy trunk, stiff arms, extended legs
9m: poor head control, rounded back, stiff legs,
pointed toes, doesn't take weight on legs
12m: unable to weight bear, cannot crawl, asymmetrical
18m: stiff arms, tiptoe gait, asymmetrical play/sitting