RESUMO
BACKGROUND: Lower limb coronal alignment was thought to be a predictive factor for Unicompartmental Knee Arthroplasty (UKA) result. The tibial bony resection and implant position lead to joint line change postoperatively. Analysis was done to find out the correlation between these factors. METHODS: From 2019 to 2021, 90 medial Oxford UKA were implanted by a single surgeon. Hip Knee Ankle Angle (HKAA), Lateral Distal Femoral Angle (LDFA), Medial Proximal Tibial Angle (MPTA), and intraoperative bony resection thickness were measured. The medial joint line change was calculated. The correlation between joint line change and alignment change was evaluated. RESULTS: The mean tibial resection thickness was 4.3 mm. The mean tibial joint line was elevated by 2.3 mm, while the mean femoral joint line proximalized by 0.8 mm. HKAA changed from 8.4° varus preoperatively to 3.6° varus postoperatively. LDFA changed from 89.0° to 86.7°. MPTA changed from 85.6° to 86.6°. Preoperative HKAA showed a strong correlation with postoperative HKAA (p < 0.001), and preoperative MPTA showed a positive correlation with postoperative HKAA (p < 0.001). While preoperative LDFA had a negative correlation with postoperative HKAA (p < 0.001). The femoral joint line change and LDFA change had a significant correlation with HKAA change (p < 0.05). CONCLUSION: The change of joint line had no correlation with postoperative HKAA in Oxford UKA. Preoperative HKAA strongly correlated with postoperative HKAA; while preoperative smaller LDFA and larger MPTA had a moderate correlation with postoperative HKAA. The femoral joint line change and LDFA change had a weak to moderate correlation with HKAA change.
Assuntos
Artroplastia do Joelho , Articulação do Joelho , Humanos , Artroplastia do Joelho/métodos , Masculino , Feminino , Idoso , Pessoa de Meia-Idade , Articulação do Joelho/cirurgia , Tíbia/cirurgia , Estudos Retrospectivos , Fêmur/cirurgia , Prótese do Joelho , Período Pós-Operatório , Resultado do Tratamento , Idoso de 80 Anos ou mais , Osteoartrite do Joelho/cirurgiaRESUMO
Abstract Background: Lower limb coronal alignment was thought to be a predictive factor for Unicompartmental Knee Arthroplasty (UKA) result. The tibial bony resection and implant position lead to joint line change postoperatively. Analysis was done to find out the correlation between these factors. Methods: From 2019 to 2021, 90 medial Oxford UKA were implanted by a single surgeon. Hip Knee Ankle Angle (HKAA), Lateral Distal Femoral Angle (LDFA), Medial Proximal Tibial Angle (MPTA), and intraoperative bony resection thickness were measured. The medial joint line change was calculated. The correlation between joint line change and alignment change was evaluated. Results: The mean tibial resection thickness was 4.3 mm. The mean tibial joint line was elevated by 2.3 mm, while the mean femoral joint line proximalized by 0.8 mm. HKAA changed from 8.4° varus preoperatively to 3.6° varus postoperatively. LDFA changed from 89.0° to 86.7°. MPTA changed from 85.6° to 86.6°. Preoperative HKAA showed a strong correlation with postoperative HKAA (p < 0.001), and preoperative MPTA showed a positive correlation with postoperative HKAA (p < 0.001). While preoperative LDFA had a negative correlation with postoperative HKAA (p < 0.001). The femoral joint line change and LDFA change had a significant correlation with HKAA change (p < 0.05). Conclusion: The change of joint line had no correlation with postoperative HKAA in Oxford UKA. Preoperative HKAA strongly correlated with postoperative HKAA; while preoperative smaller LDFA and larger MPTA had a moderate correlation with postoperative HKAA. The femoral joint line change and LDFA change had a weak to moderate correlation with HKAA change.
RESUMO
El presente estudio comprende al enriquecimiento de la espinaca con óxido férrico (clavo oxidado). Donde se utilizó dosis determinadas de un gramo y dos gramos de clavo oxidado, para el enriquecimiento de suelo en las extensiones destinadas a la experimentación, con la intención de verificar si la planta de espinacas presentaba la capacidad de asimilar mayor cantidad de hierro con la incorporación del clavo oxidado, llegando a la conclusión que el óxido férrico preoveniente del clavo oxidado no es directamente asimilable por la planta, ya que debe tener condiciones especiales para su asimilación del sustrato (suelo).
RESUMO
El presente estudio comprende al enriquecimiento de la espinaca con óxido férrico (clavo oxidado). Donde se utilizó dosis determinadas de un gramo y dos gramos de clavo oxidado, para el enriquecimiento de suelo en las extensiones destinadas a la experimentación, con la intención de verificar si la planta de espinacas presentaba la capacidad de asimilar mayor cantidad de hierro con la incorporación del clavo oxidado, llegando a la conclusión que el óxido férrico preoveniente del clavo oxidado no es directamente asimilable por la planta, ya que debe tener condiciones especiales para su asimilación del sustrato (suelo).