title: Juvenile first rib fracture caused by morning stretching.
abstract: BACKGROUND
  First rib fractures are very rare, being primarily associated with external blunt trauma. Related conditions, such as sudden contraction of the neck muscle, stress fractures, and fatigue fractures, have been reported sporadically. These fractures are mostly related to repetitive or explosive physical training. However, anatomical relationships and related injury mechanisms may cause first rib fractures without repetitive sports activity.
  
  
  OBJECTIVE
  To present a case of juvenile first rib fracture caused by morning stretching without sports activity. CASE
  
  
  METHODS
  We present a rare case report of juvenile atraumatic first rib fracture.
  
  
  CONCLUSIONS
  Physicians should be aware that even morning stretching with yawning can cause a first rib fracture in children. Awareness is important for early recognition, and proper management is critical for a pain-free return to normal life. An understanding of the mechanism of atraumatic first rib fracture is important.
authors.affiliation: Emergency Medicine and Respiratory Center of Kangwon National University Hospital and School of Medicine, Kangwon National University, Chuncheon, South Korea.
authors.forename: Seung-Joon
authors.initials: SJ
authors.lastname: Lee
authors.forename: Kilsoo
authors.initials: K
authors.lastname: Yie
authors.forename: Sung Bin
authors.initials: SB
authors.lastname: Chon
mesh_terms: D000293:Adolescent; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use; D006801:Humans; D008297:Male; D019547:Neck Pain / Q000209:etiology; D011859:Radiography; D012253:Rib Fractures / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000209:etiology*; D020069:Shoulder Pain / Q000209:etiology; D015000:Yawning
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal