You'll have to show a source for this one. There is no pathological connection between spaying/neutering and bone cancer. Not a single one.
Bone issues are likely caused by improper diet causing unbalanced growth than anything else.
Because this is one of the 'hot buttons' of animal lovers and also personal opinion, I ended my answer to the
original poster to 'research and decide for yourself'...as I did and encourage everyone to do so.
Dr Alice Villalobos, a well known pioneer in the field of cancer care, a veterinary oncologist who in 1977,
established a rescue organization, Peter Zippi Fund For Animals and advocated early spay/neuter, is but one
of many to reverse (based on many, many studies and established statistics) this opinion and is quoted....
"What IF we found enough epidemiological evidence that early spay/neuter of dogs may open them orthopedic,
behavioral, immunologic & oncology issues?"
"It is earth shattering to consider that some of the cancers we have been battling may have been enhanced by
early spay/neuter instead of the reverse."
She is also saying that cancer IS NOT the only adverse reaction that can be caused by doing so.
I could provide many resources but again, everyone should research this for themselves and do what THEY think
best for all concerned...I am not advocating NO spay/neuter just waiting until dogs finish puberty and that is only
my opinion. I'm not interested in telling anyone what to do about anything, lol