Re: Jack's high ankle sprains........
It's actually called a syndesmotic injury in medical parlance. This figure and paper describes it best:
Isolated Syndesmotic Injury
Figure 1
The mechanism of syndesmotic injury is described. (A) A direct blow down to the leg of a football player external rotates the ankle to give syndesmotic injury. (B) External rotating force is applied to the ankle of an ice hockey player when the player's foot is planted and the knee internal rotated.
Jack's syndesmotic muscle that connects his tibia and fibula was likely sprained. (Actually torn is a better description.) But no one showed me the MRI so I am guessing. However......
A sprained ankle is one of the most common injuries caused by participation in sports. It refers to soft tissue damage (mainly ligamentsligaments) around the ankle joint. A High Ankle Sprain refers to ligament damage at the joint between the shin bone (Tibia) and splint bone (Fibula). This joint is referred to as the Ankle Syndesmosis.
Frankly, it doesn't seem to have anything to do with how tight he laces his skates, the type of skate he wears, how he skates or that he's particularly prone to this injury. It will happen to anyone who is unfortunate enough to have to his foot/ankle bend in one direction and his knee in another. Coincidental that he's had it happen twice. Otherwise, just chalk it up to bad karma.