title: The use of intramedullary helix wire for the treatment of proximal humerus fractures.
abstract: OBJECTIVE
  To present the functional and radiographic outcome 1 and 6 years after application of a new intramedullary fixation device for proximal humerus fractures.
  
  
  METHODS
  Retrospective case series.
  
  
  METHODS
  Level II orthopaedic surgery hospital.
  
  
  METHODS
  Twenty-six consecutive patients (average age 68.9 years) with 2-, 3- and 4-part fractures of the proximal humerus were operated at a single institution. Follow-up was performed after 1 year (26 patients) and 6 years (16 patients).
  
  
  METHODS
  All patients were treated with closed reduction and intramedullary helix wires.
  
  
  METHODS
  The Constant-Murley score and the University of California Los Angeles (UCLA) score. Clinical complications and radiological posttraumatic arthritis were recorded.
  
  
  RESULTS
  The average Constant-Murley score was 70.3 (points) and 70.7 after 1 and 6 years, respectively; the average UCLA score was 27.2 and 31.5 after 1 and 6 years, respectively. Major complications were 4 revisions for 3 secondary fragment displacements and 1 nonunion with partial avascular osteonecrosis in the first postoperative year. Complications were found predominantly in 4-part fractures (3/5, 60%). There were no further complications or progressive posttraumatic arthritis up to 6 years following surgery.
  
  
  CONCLUSIONS
  The helix wire is well suited for displaced or unstable 2- and 3-part proximal humerus fractures. Adequate functional outcome, a low number of implant displacements, a low number of application morbidity, and infrequent implant removals were recorded. The use of this device is not recommended for 4-part fractures.
authors: Department of Orthopedic Surgery, Inselspital Berne, Berne, Switzerland. fabian.krause@insel.ch
authors: Fabian G
authors: FG
authors: Krause
authors: Sebastian
authors: S
authors: Gathmann
authors: Ottmar
authors: O
authors: Gorschewsky
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001864:Bone Wires; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D005594:Fracture Fixation, Intramedullary / Q000295:instrumentation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012784:Shoulder Fractures / Q000601:surgery*; D016896:Treatment Outcome