Nursmaid elbow is a very common injury to younger children. It can happen from lifting a child by his arm or holding him by the arm and swinging him around. It can also happen to someone who lifts heavy things repetitively. The name comes from women that had to carry heavy containers of milk.
In nursemaid elbow, the radius bone subluxes away from the ulna bone. This motion causes the tearing or stretching of the annular ligament, which results in loss of movement.
(This answer provided for NATA by the Southern Utah University Athletic Training Education Program.)
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