Accuracy and initial stability of open- and closed-wedge high tibial osteotomy: a cadaveric RSA study
| Autor: | Albert van Kampen, Roy T. C. Welsing, W. J. Rijnberg, Nico Verdonschot, Robert D. A. Gaasbeek, Corne J. M. van Loon |
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| Rok vydání: | 2005 |
| Předmět: |
Joint Instability
musculoskeletal diseases Tissue engineering and reconstructive surgery [UMCN 4.3] Knee Joint Rotation medicine.medical_treatment Osteotomy Weight-Bearing High tibial osteotomy Cadaver Bone plate medicine Humans Orthopedics and Sports Medicine Range of Motion Articular Orthodontics Human Movement & Fatigue [NCEBP 10] Tibia biology business.industry Initial stability Anatomy musculoskeletal system biology.organism_classification Valgus Photogrammetry Linear Models Surgery Stress Mechanical Cadaveric spasm Range of motion business Bone Plates |
| Zdroj: | Knee Surgery, Sports Traumatology, Arthroscopy, 13, 8, pp. 689-94 Knee Surgery, Sports Traumatology, Arthroscopy, 13, 689-94 |
| ISSN: | 0942-2056 |
| Popis: | Item does not contain fulltext We analyzed the difference in angle-correction accuracy and initial stability between open-wedge (OWO) and closed-wedge tibial valgus osteotomy (CWO). Five fresh-frozen pairs of human cadaver lower limbs were used; their bone mineral density (BMD) was measured with DEXA and a planned 7 degrees valgus osteotomy was performed, either with an open (right knees) or closed (left knees) technique. All knees for osteotomy were fixed with a rigid locked plate. In OWO, tricalcium phosphate (TCP) wedges were inserted. The knees were subjected to an increasing cyclic axial load until failure, while measuring the relative displacement of the bony segments with roentgen stereophotogrammetric analysis. The mean postoperative valgus correction angle was 9.5 degrees +/-2.8 degrees for CWO (over-correction of 2.5 degrees ) and 6.2 degrees +/-2.0 degrees for OWO (under-correction of 0.8 degrees ) (P =0.08). The data of displacement under load bearing showed no significant differences in rotations and translations in any direction. No significant correlation between BMD and the moment of failure was found (P =0.27). This study has shown that both methods gave an acceptable correction with a high variation of postoperative correction angles. There was a tendency for over-correction in the CWO group but no significant difference was found. There was no difference in initial stability between CWO and OWO with a rigid locked-plate fixation. |
| Databáze: | OpenAIRE |
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