The Sun-Sentinel's Omar Kelly reports that Turner is battling "turf toe," which is a metatarsophalangeal joint sprain. In other words, Turner has suffered a sprain of the joint connecting his foot to his big toe. The nickname for the ailment comes from the fact that the injury is commonly associated with playing sports on artificial turf. The most common scenario causing the injury is hyper-extension of the big toe due to one player falling on top of the outstretched leg of another player whose knee and toes are planted on the ground. Putting 200+ pounds of weight on the calf with the toes planted on the ground causes the toes to hyper-extend (bend upward if you're looking down at your feet), and the joint is overstretched to the point that the connection between the foot and the toe is damaged. The big toe is important in allowing athletes to plant their foot and both change directions and make explosive movements. For now, Turner is fully practicing despite the injury, suggesting his sprain has been judged as not too serious. However, it does add another variable to the question of who the Dolphins' starting guards should be.