title: [Standardised operation technique for ulna-shortening with a new sliding-hole plate].
abstract: Ulna-shortening is a widely accepted procedure for the treatment of ulna-impaction syndrome. High rates of non-unions however necessitate improving the operation technique. The new device introduced in this study is a 7-hole plate in which two proximal holes are sliding-holes. By correct placement of two distal screws and two screws in the sliding-holes, rotational stability is guaranteed. The osteotomy is performed while the plate is loosely fixed to the ulna. After fixation of the two distal screws, the sliding-holes facilitate reposition with a good closure of the osteotomy gap. Excentric placement of two more screws and placement of a lag screw across the oblique osteotomy leads to further compression at the osteotomy site. Ulna-variance can be adjusted exactly. So far the plate has been implanted in 15 patients. Ulna-variance was reduced from + 2 to - 2.2 mm. The clinical results are comparable to those of ulna-shortenings in the literature. The sliding-hole plate allows an exact connection with good closure of the osteotomy without malrotation. With this simplified technique, the risk of non-union can be reduced.
authors.affiliation: Klinik für Handchirurgie, Bad Neustadt/Saale, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Löw
authors.forename: M
authors.initials: M
authors.lastname: Rau
authors.forename: J
authors.initials: J
authors.lastname: Van Schoonhoven
authors.forename: H
authors.initials: H
authors.lastname: Kitzinger
authors.forename: H
authors.initials: H
authors.lastname: Krimmer
mesh_terms: D000328:Adult; D001182:Arthroscopy; D001860:Bone Plates; D001863:Bone Screws; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000295:instrumentation / Q000379:methods*; D011859:Radiography; D013997:Time Factors; D014457:Ulna / Q000000981:diagnostic imaging / Q000601:surgery*
vernacular_title: Standardisierte Operationstechnik der Verkürzungsosteotomie der Elle mit neuer Gleitlochplatte1.