The main movements at the knee in a golf swing is rotation. The commonest injuries of the knee in golf, are tears of the meniscus. This generally occurs over the age of 40, but can affect any age.

Either in a collision, or without contact, mechanisms of injury might be rotation, or flexion in any direction more than is safe, resulting in cruciate or other ligament tears, meniscal injuries, or fractures. These, if severe, can threaten sporting activity in the long term.

Ligament tears and meniscal injuries are the most common injuries in this age group. It is important at any age, but particularly in adolescence, to seek early treatment advice, to prevent long term problems, if this is at all possible.

Jumpers and sportspeople who overstretch themselves are prone to conditions such as tendonitis, and repeated sprains. Many of these conditions are self limiting, but prevention is better than cure. Acute pain during sports activity is not a good thing, and I would recommend you stop if this happens. If the problem keeps occurring during sports, you should probably seek physiotherapy advice to begin with. If it persists, or gets worse, I should see you to discuss the issue.

Before ankle supportive boots were routinely used for skiing, the ankles took a lot of injury. Nowadays, ankles are protected, so the most vulnerable joint to skiing injury is the knee. Cruciate and other ligament injuries are common, with meniscal tears and fractures also a significant problem. Preparing your general fitness level prior to skiing is recommended, with particular attention to thigh muscle strength. This will not prevent all injuries, but will protect you from getting tired too quickly, when injury is perhaps more likely.