title: Radial head fracture associated with posterior interosseous nerve injury.
abstract: Fractures of the radial head and radial neck correspond to 1.7-5.4% of all fractures and approximately 30% may present associated injuries. In the literature, there are few reports of radial head fracture with posterior interosseous nerve injury. This study aimed to report a case of radial head fracture associated with posterior interosseous nerve injury.
  
  
  METHODS
  A male patient, aged 42 years, sought medical care after falling from a skateboard. The patient related pain and limitation of movement in the right elbow and difficulty to extend the fingers of the right hand. During physical examination, thumb and fingers extension deficit was observed. The wrist extension showed a slight radial deviation. After imaging, it became evident that the patient had a fracture of the radial head that was classified as grade III in the Mason classification. The patient underwent fracture fixation; at the first postoperative day, thumb and fingers extension was observed. Although rare, posterior interosseous nerve branch injury may be associated with radial head fractures. In the present case, the authors believe that neuropraxia occurred as a result of the fracture hematoma and edema.
authors.affiliation: Santa Casa de Misericórdia de Vitória, Departamento de Ortopedia e Traumatologia, Vitória, ES, Brazil.
authors.forename: Bernardo Barcellos
authors.initials: BB
authors.lastname: Terra
authors.affiliation: Santa Casa de Misericórdia de Vitória, Departamento de Ortopedia e Traumatologia, Vitória, ES, Brazil.
authors.forename: Tannus Jorge
authors.initials: TJ
authors.lastname: Sassine
authors.affiliation: Santa Casa de Misericórdia de Vitória, Departamento de Ortopedia e Traumatologia, Vitória, ES, Brazil.
authors.forename: Guilherme de Freitas
authors.initials: GF
authors.lastname: Lima
authors.affiliation: Santa Casa de Misericórdia de Vitória, Departamento de Ortopedia e Traumatologia, Vitória, ES, Brazil.
authors.forename: Leandro Marano
authors.initials: LM
authors.lastname: Rodrigues
authors.affiliation: Santa Casa de Misericórdia de Vitória, Departamento de Ortopedia e Traumatologia, Vitória, ES, Brazil.
authors.forename: David Victoria Hoffmann
authors.initials: DV
authors.lastname: Padua
authors.affiliation: Santa Casa de Misericórdia de Vitória, Departamento de Ortopedia e Traumatologia, Vitória, ES, Brazil.
authors.forename: Anderson de
authors.initials: A
authors.lastname: Nadai
keywords: Hematoma; Radial head fractures; Radial nerve