title: Is locking nailing of humeral head fractures superior to locking plate fixation?
abstract: The optimal surgical treatment of displaced proximal humeral fractures is controversial. New implants providing angular stability have been introduced to maintain the intraoperative reduction. In a multi-institutional study, we prospectively enrolled and followed 152 patients with unilateral displaced and unstable proximal humeral fractures treated either with an antegrade angular and sliding stable proximal interlocking nail or an angular stable plate. Fractures were classified according to the Neer four-segment classification. Clinical, functional, and radiographic followups were performed 3, 6, and 12 months after surgery. Absolute and relative (to the contralateral shoulder) Constant-Murley scores were used to assess postoperative shoulder function. Using age, gender, and fracture type, we identified 76 pairs (152 patients) for a matched-pairs analysis. Relative Constant-Murley scores 12 months after treatment with an angular and sliding stable nail and after plate fixation were 81% and 77%, respectively. We observed no differences between the two groups. Stabilization of displaced proximal humeral fractures with either an angular stable intramedullary or an extramedullary implant seems suitable with both surgical treatment options.
  
  
  METHODS
  Level III, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
authors.affiliation: Department of Trauma and Reconstructive Surgery, University of Rostock, Schillingallee 35, D-18055, Rostock, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Gradl
authors.forename: A
authors.initials: A
authors.lastname: Dietze
authors.forename: M
authors.initials: M
authors.lastname: Kääb
authors.forename: W
authors.initials: W
authors.lastname: Hopfenmüller
authors.forename: T
authors.initials: T
authors.lastname: Mittlmeier
mesh_terms: D000368:Aged; D001858:Bone Nails; D001860:Bone Plates; D004867:Equipment Design; D004869:Equipment Safety; D005260:Female; D005594:Fracture Fixation, Intramedullary / Q000295:instrumentation* / Q000379:methods; D017102:Fracture Healing / Q000502:physiology; D006801:Humans; D015601:Injury Severity Score; D008297:Male; D008875:Middle Aged; D011336:Probability; D011446:Prospective Studies; D016059:Range of Motion, Articular / Q000502:physiology*; D020127:Recovery of Function; D018570:Risk Assessment; D012784:Shoulder Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D018709:Statistics, Nonparametric; D014057:Tomography, X-Ray Computed; D014193:Trauma Centers; D016896:Treatment Outcome