Matching Pairs 2.47 Muscle and bone conditionsOnline version Muscle and bone conditions by Jorge Arizpe 1 A dislocation is produced when extreme force is applied over a ligament, which separates the ends of connected bones. 2 The term muscular distrophy makes reference to a group of hereditary diseases that produce weakness in the striated muscles. 3 A muscle tear is an injury that damages the internal structure of the muscle. 4 A sprain is an injury of the ligaments due to excesive extention, bloating or torsion, coupled by bruises, inflamation and pain that prevent the movement of the injured area. 5 Atrophy is the reduction of the size of an organ due to the loss of protoplamic mass. 6 Disease that consists in the loss of bone tissue in the bones due to descalcification. 7 Muscular contraction is the persistent and involuntary contraction of a muscle. 8 Achondroplastic dwarfism: Long bones stop growing during childhood. 9 Fracture is defined as: lost of continuity of bone mass. It is caused mainly by direct blows. 10 Scoliosis is a curvature of the spine that results in the "S" or "C" form.