Fracture of the coronoid process requiring open reduction with internal fixation. A case report.

Coronoid Fractures of the Elbow

“…In hyperextension injuries, the coronoid can fracture via a combination of mechanisms. 1,15,18,26,27 During dislocation, the trochlea can axially load the coronoid process leading to a shear fracture during terminal extension. There may also be an avulsive component with the capsule pulling off the tip of the coronoid.…”

“…1,21,26 However, until recently there has not been a great deal of evidence either describing instability associated with Morrey type I coronoid fractures or supporting the efficacy of their repair. 20 Josefsson 19 reported on 4 patients who experienced recurrent instability following an initial dislocation.…”

“…Elbow dislocation patients often present with a history of a hyperextension or twisting and hyperflexion with a feeling of dislocation followed by a spontaneous reduction. 1,30 In unreduced dislocations an obvious deformity is usually present. Patients present in pain with diffuse swelling and tenderness.…”

“…Patients present in pain with diffuse swelling and tenderness. 1,27 Tenderness can be multifocal and corresponds with the areas of maximal injury. Range of motion, including flexion, extension and rotation, is limited.…”

“…Other complications include osteoarthritis, heterotopic ossification, calcification, instability, pain and parasthesias. 1,22,26 It is not unusual to see degenerative changes on plain radiographs, but they are not necessarily symptomatic. 16 Younger patients tend to experience fewer post-dislocation symptoms.…”