Freigang, Viola and Gottsauner, Maximilian and Rupp, Markus and Pfeifer, Christian and Grechenig, Stephan and Kerner, Alexander and Alt, Volker and Baumann, Florian (2021) Surgical Drill Guide for Insertion of an Infra-Acetabular Screw Based on an Anatomically Precontoured Plate System: A Cadaveric Study. BIOMED RESEARCH INTERNATIONAL, 2021: 2321504. ISSN 2314-6133, 2314-6141
Full text not available from this repository. (Request a copy)Abstract
Purpose. Due to the anatomic structure of the pelvis, free-hand placement of screws in the acetabular fracture management can be difficult. Infra-acetabular screw fixation increases acetabular stability by distal fixation of the cup. Aim of this cadaveric study is to investigate if a plate-referenced drill guide can provide save placement of an infra-acetabular screw over a precontoured suprapectineal quadrilateral buttress plate (SQBP). Methods. We constructed a drill guide for an infra-acetabular screw based on the surface of an anatomically precontoured SQBP. A total of 12 adult cadaveric acetabular specimens were used for drill guide-assisted placement of the infra-acetabular screw. The drill guide contains a radiopaque spiral to allow longitudinal fine adjustment of the SQBP along the pelvic brim to assure correct position of the plate-drill-guide construct in relation to the Koehler's teardrop. After screw placement, we conducted a computed tomography (CT) scan of all specimens to assess the actual position of the screw in relation of the infra-acetabular corridor and the acetabular joint surface. Results. The position of the screw was within the infra-acetabular corridor in all cases. We did not see any intra-articular or intrapelvic screw penetration. The mean distance of the centerline of the screw to the medial border of the infra-acetabular corridor was 3.35 mm. The secure distance to the virtual surface of the femoral head to was 7.3 mm. Conclusions. A plate-referenced drill guide can provide safe placement of an infra-acetabular screw for treatment of acetabular fractures. Radiographic fine adjustment is necessary to access the optimal entry point.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUADRILATERAL SURFACE; INTRAPELVIC APPROACH; FIXATION STRENGTH; FRACTURES; REDUCTION; PLACEMENT; CORRIDOR; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Unfallchirurgie Medicine > Lehrstuhl für Mund-, Kiefer- und Gesichtschirurgie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 19 Jul 2022 12:51 |
| Last Modified: | 19 Jul 2022 12:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/45876 |
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