Puppy growth - medium sized dogs

[QuobAsti]

This isn't one of my pups but someone i know of, pup is 4 months old

A few weeks back the pup went to the vets as a front leg was flicking out to the side from the wrist when the pup was running.
Their vets spoke with a specialist who advised 2 weeks crate rest.
Pup then seemed ok for a while.

Now the pup has been back to the vets and vet didn't want to x-ray the pup but the owner insisted.
The pup has one specific bone in both front legs which are growing too fast, they are now being referred to a specialist to have his front legs operated on.

I don't have any further or more specific information than the above.

What could cause bones to grow too fast?
A quick search shows up overnutrition but i wonder if anyone else could add to this with any other reasons.

 

[Lintel]

http://www.horseandhound.co.uk/forums/archive/index.php/t-490947.html

There was a similar discussion a few years ago I've linked it

 

[CorvusCorax]

Pano?

Most dogs grow out of it.
Modern breeding and feeding regimes are a big contributor to pano. Especially rocket fuel levels of protein in a lot of dry foods.
It's also prevalent in certain breeding lines. A dog I know was crippled with it at nine months and is now an operational police dog with no issues.

What is the breed?

 

[QuobAsti]

Lintel - Thank you for the link, i shall have a read over that at lunch time

CC - The puppy in question is an English Springer Spaniel

 

[Aru]

Elbow dysplasia due to incongruity is very common in Springers for some reason. Its caused when the bones of the foreleg grow at different rates= Incongruity.

Ive attached the Fitzpatrick's referral page on the condition as it explains things 100 times better then I can and has pictures.

https://www.fitzpatrickreferrals.co.uk/orthopaedic/canine-elbow-dysplasia/

it could also be related to an angular limb deformity but the two issues are often linked

https://www.fitzpatrickreferrals.co.uk/orthopaedic/angular-limb-deformity/