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30. Effect of Anterior Tibial Closing Wedge Osteotomy on Coronal Tibial Alignment in Relation to Preoperative Medial Proximal Tibial Angle and Wedge Height.

Author

Mayer, Philipp, Schuster, Philipp, Schlumberger, Michael, Michalski, Stefan, Geßlein, Markus, Beel, Wouter, Immendörfer, Micha, and Richter, Jörg

Subjects
TIBIA surgery, CONFIDENCE intervals, OSTEOTOMY, MULTIVARIATE analysis, RETROSPECTIVE studies, REGRESSION analysis, HEALTH outcome assessment, T-test (Statistics), REOPERATION, POSTOPERATIVE period, DESCRIPTIVE statistics, TIBIA, ANTERIOR cruciate ligament surgery, STATISTICAL correlation, DATA analysis software
Abstract

Background: The posterior tibial slope has been identified as an anatomic risk factor for anterior cruciate ligament insufficiency and reruptures after anterior cruciate ligament reconstruction. Anterior tibial closing wedge osteotomy for correction of sagittal plane deformities has the potential to cause an unintended change in coronal plane alignment. Purpose: To evaluate the effects of anterior tibial closing wedge osteotomies for correction of posterior tibial slope on coronal plane alignment using an infratuberosity surgical approach and to identify predictive factors for a change in medial proximal tibial angle (MPTA). Study Design: Case series; Level of evidence, 4. Methods: This study reports on retrospectively obtained data from radiographic measurements of 38 anterior tibial closing wedge osteotomies. All patients underwent revision anterior cruciate ligament reconstruction and had undergone ≥1 previous anterior cruciate ligament reconstruction. In all patients, an infratuberosity approach was used with angular stable plate fixation. Pre- and postoperative radiographs were examined retrospectively to detect changes in the sagittal and coronal plane alignment (posterior tibial slope and MPTA). A multivariate regression analysis was used to identify predictors for a change in MPTA. Results: The study group consisted of 14 women and 24 men whose mean ± SD age at the index procedure was 31.6 ± 8.7 years (range, 17-51 years). Posterior tibial slope decreased significantly (by 7.2° ± 2.3°; P <.001) from 14.6° ± 2.0° preoperatively to 7.4° ± 2.1° postoperatively. MPTA decreased significantly by 1.3° ± 1.5° (P =.005) from pre- to postoperative measurement. Mean wedge height was 9.3 ± 1.1 mm. A lower preoperative MPTA (coefficient = 0.32; P =.017; 95% CI, 0.06-0.59) and larger wedge height (coefficient = 0.48; P =.029; 95% CI, 0.05-0.9) were significant predictive factors for a decrease in MPTA. Conclusion: Anterior tibial closing wedge osteotomy for posterior tibial slope reduction resulted in a slight but significant decrease of the MPTA in the coronal plane. These changes were dependent on the preoperative MPTA and the wedge height. [ABSTRACT FROM AUTHOR]

Published
2023
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48. Stoff der Protestanten

Author

Meier, Esther, Rasche, Adelheid, Hubach, Hanns, Richter, Jörg, Horváth, Iringó T., Hänsch, Amalie, Ottweiler, Wibke, Schubert, Anselm, Schrader, Karin, Burghartz, Susanna, Overkamp, Anne Sophie, Sedler, Irmgard, Krull, Lena, Zander-Seidel, Jutta, and Hess, Daniel

Published
2022
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