1. Green stick fracture
is peculiar only to the children cause their bones are most elastic than adults. More elasticity causes bones to bend to force rather than fracturing.
2. Inability to bear weight in the limb is mostly suggestive of some bony injury
- ?green stick / bony contusion
. since the child is 3 yrs & 1 mnth old, bony healing will be fast & minor degrees of bend in bone will also get corrected as the child grows. so a cast for 1-2 weeks is enough.
3. If at all there was a fracture, xray after 2 weeks will show signs of fracture / bony healing. since the child is able to bend the knee, complications expected will be also less.
4. To rightly diagnose the problem she might need CT scan
scan based on clinical examination. But usually CT/MRI are not advised for children in such injuries. Clinical observation with immobilisation by cast is enough.
wish her to get well soon,