Halm-Zielke instrumentation for primary stable anterior scoliosis surgery: operative technique and 2-year results in ten consecutive adolescent idiopathic scoliosis patients within a prospective clinical trial
| Autor: | Donald P. K. Chan, K. Zielke, Henry Halm, Thomas Niemeyer, Winfried Winkelmann, Ulf Liljenqvist |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Technical Innovation
medicine.medical_specialty Adolescent Instrumentation Idiopathic scoliosis Hemorrhage Scoliosis Postoperative Complications medicine Humans Orthopedics and Sports Medicine Threaded rod Postoperative Period Prospective Studies Intraoperative Complications business.industry Equipment Design medicine.disease Surgery Orthopedic Fixation Devices Clinical trial Radiography Treatment Outcome Coronal plane Thoracolumbar kyphosis Implant sense organs business |
| Zdroj: | European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society. 7(5) |
| ISSN: | 0940-6719 |
| Popis: | Halm-Zielke instrumentation (HZI) was developed to eliminate the disadvantages of Zielke instrumentation (VDS) in terms of lack of primary stability and a kyphogenic effect. HZI is an anterior double-rod system. The system is composed of a lid-plate, which is fixed at the lateral aspect of the vertebral body with two screws, a sunk screw anteriorly and a VDS screw posteriorly. The lid-plate design provides the lowest possible implant profile. The longitudinal components consist of a threaded VDS rod and a solid, fluted rod. Correction is performed with the threaded rod and the solid rod. The solid rod allows internal derotation and relordosation, eliminates the Zielke three-point lever system and augments the system. The fluted design of the rod provides rotatory stability. This is a report of the first ten consecutive adolescent idiopathic scoliosis patients in a prospective clinical trial using HZI with a minimum follow-up of 2 years. Curves ranged from 36 degrees to 77 degrees. Correction of the frontal plane averaged 77.5% and 72.2% postoperatively and at follow-up, respectively. Thoracolumbar kyphosis was present in three patients and corrected in all from an average of +18 degrees to +1.7 degrees at follow-up. Implant-related complications were not observed. All patients were treated without any additional external immobilization. In our opinion, HZI is a major improvement on the original Zielke VDS. It eliminates the kyphogenic effect and provides primary stability. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink