Spontaneous atraumatic dislocation of sternoclavicular joint in Reiter syndrome.

Reactive arthritis or Reiter's syndrome characteristically affects the joint of the lower limb in an asymmetrical pattern. Usually it does not affect the axial skeleton or upper limbs. Although cases of atraumatic atlantoaxial subluxations have been reported, no case of spontaneous sternoclavicular dislocation in Reiter's syndrome has been reported. This paper describes a case of a 26 year old male patient who developed a spontaneous posterior sternoclavicular joint dislocation. No attempt of reduction was made and the patient was managed conservatively with good results.