31. Fetlock boots are sometimes seen on the rear legs, primarily to prevent the horse from hitting itself on tight turns.32. A totally ruptured superficial digital flexor tendon ( SDFT ) will cause a visible drop in the angle of the fetlock . 33. He noted that horses would sink in sand to their fetlocks , and walking in the sand exhausted men and animals. 34. Dr . Stephen J . Selway led the five-person surgical team to align and stabilize Charismatic's fetlock joint. 35. Any stockings or socks _ lighter hair around a horse's fetlocks _ would be noted if River Emperor had them. 36. Prior to injection, a tourniquet is placed around the fetlock to help keep the contrast material within the foot during radiography. 37. The treatment was called a " pinfire, " a " cure " which resulted in a large knob on her fetlock . 38. A positive result from this block will not be able to differentiate foot pain from pain in the pastern or fetlock region. 39. When the fetlock suffers trauma, enzymes and other agents from the joint lining are released that destroy tissue inside the joint. 40. An injury to the collateral ligament of the fetlock predisposes the horse to fetlock luxation, the second most common fatal injury.