I'm just wondering, if you have a knee injury while skiing would that result in total knee replacement surgery?

Not likely: Usually skiing injuries to the knee involve cartilage or ligament injuries that can be treated with arthroscopic surgery if surgery is needed.

Not yet...: More commonly, injury to ligaments and cartilage occur. If these are not addressed and the knee remains unstable, arthritis can result many years later.

Not usually: Knee replacements are for people that wear down the cartilage surfaces in their knee joints. This is from chronic wear over time or from a traumatic cartilage surface injury like a tibial plateau fracture.