title: [First results with a multidirectional fixed angle implant for internal fixation of distal radius fractures].
abstract: BACKGROUND
  The management of fractures of the distal radius continues to evolve. New operative strategies have recently been developed including the use of fixed-angle plates. This study reviews the results of 20 patients with fractures of the distal radius treated with a new multidirectional fixed angle plate.
  
  
  METHODS
  A total of 20 patients with closed Colles type fractures of the distal radius were treated with Medartis (Aptus 2.5) palmar fixed-angle plates. Surgery was performed under plexus anesthesia using the standard or extended flexor carpi radialis (FCR) approach. Patients were evaluated prospectively with a mean follow-up of 26 weeks (range 23-28 weeks). Pain, range of motion, grip strength, DASH score, modified Mayo wrist score and radiographs were obtained. The level of significance was set at 95% and the χ(2) and ANOVA tests in combination with a post hoc Tukey test were used for statistical analysis.
  
  
  RESULTS
  The average range of motion (ROM) in extension-flexion was 87° (76% of the contralateral side) and in ulnar-radial deviation 42° (88% of the contralateral side). Pain values (visual analogue scale 0-100) at follow-up were 3 (without stress) and 24 (with stress). Grip strength improved to 84% of the contralateral side, the mean DASH score was 13 points and the modified Mayo wrist score confirmed the excellent results with a mean value of 83±27 points. Radiological examination showed a satisfactory result with an ulna variance of 0.9±0.4 mm, radio-ulnar inclination of 21±5° and palmar inclination of 4±6°.
  
  
  CONCLUSIONS
  Our data show that treating unstable distal radius fractures with multidirectional palmar fixed-angle plates is reliable and effective and produces good early functional and radiological results. However, long-term results with a larger number of patients and randomized prospective studies comparing this technique with other established procedures are required.
authors.affiliation: Unfallchirurgische Klinik, Medizinische Hochschule Hannover, Hannover, Deutschland. reinhard.meier@handchirurg.org
authors.forename: R
authors.initials: R
authors.lastname: Meier
authors.forename: C
authors.initials: C
authors.lastname: Krettek
authors.forename: C
authors.initials: C
authors.lastname: Probst
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019544:Equipment Failure Analysis; D005260:Female; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D006801:Humans; D007595:Joint Prosthesis; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D011474:Prosthesis Design; D011859:Radiography; D011885:Radius Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D016896:Treatment Outcome; D014954:Wrist Injuries / Q000000981:diagnostic imaging / Q000601:surgery*; D055815:Young Adult