Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Trauma - Elbow
Abstract number: 26474
ANATOMICAL FIT OF SIX DIFFERENT RADIAL HEAD PLATES
Klaus BURKHART, Yoon-Joo KIM, Tobias NOWAK, Pol ROMMENS, Lars MÜLER
Department for Trauma Surgery of the Center for Musculosceletal Surgery, Johannes
Gutenberg-University Mainz, Germany, Mainz (GERMANY)
Purpose: Bulky implants may lead to significant soft tissue irritation after plate
osteosynthesis of radial head fractures. The purpose of our study was to determine
the anatomical fit of so called precontoured radial head plates. Methods: Twentytwo
embalmed radii of human cadaver were stripped of soft tissues. Six radial head
and neck plates were investigated: 1. Medartis Radial-Head-Butress-Plate (MBP), 2.
Medartis Radial-Head-Rim-Plate (MRP), 3. Synthes Radial-Head-Plate (SHP), 4.
Synthes Radial-Neck-Plate (SNP), 5. Acumed Radial-Head-Plate (AHP) 6. Wright
Radial-Head-Plate (WHP) Five parameters of anatomical fit were tested: 1.Plate-tobone
contact: Plates were divided into 11 areas. Plate-to-bone distances were
measured at each area with simultaneous consideration of plate thickness within the
safe zone.2.Plate contact judged by 3 observers3. Pin- subchondral bone distance:
Screw-contact/distance to the subchondral zone will be assessed in lateral
radiographs.4.Plate-to-bone contact after adjustment of the plates.5.Reevaluation of
the adjusted plate contacts by the same 3 observersResults Bone-to-plate distance
for the MBP was 2,06 mm in mean (1,66-2,69), MRP 2,28 (1,83-3,14), SNP 2,51
(2,08-3,47), AHP 2,70 (2,24-3,42), SHP 3,05 (2,46-4,19) and WHP 3,12 (2,7-3,9).
The evaluations by the 3 observers showed clear differences. The more points one
plate achieved the better the anatomic fit. MBP achieved 65, SNP 32, MRP -21, AHP
-26, SHP -114, WHP -137 points.The study is not completes yet. Final results will be
presented.
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