Biomechanical analysis analyzing association between bone mineral density and lag screw migration

Lee, Hyeon Jun; Kim, Soo Ah; Jo, Sungmin; Jo, Suenghwan

doi:10.1038/s41598-023-27860-5

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…This approach will lead to a reduction of postoperative complications resulting from the deterioration of fixation (eg, cut-out, migration of osteosynthesis material, etc). [29][30][31] Currently, CT scanning appears to be the most suitable investigation for obtaining large amounts of data, being readily available and relatively cost-effective. This technique has been shown to be useful in the study of trabecular patterns.…”

Section: Introductionmentioning

confidence: 99%

Mapping the Spatial Evolution of Proximal Femur Osteoporosis: A Retrospective Cross-Sectional Study Based on CT Scans

Bot,

Chirla,

Hozan

et al. 2024

IJGM

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Purpose The purpose of this study was to quantify the modifications occurring in osteoporosis at the level of the human proximal femur throughout the trabecular structure, along with the identification of certain anatomic regions preferentially affected by osteoporosis. Another goal was to map the evolution of the radiodensity of the trabecular bone as osteoporosis progresses to an advanced stage. Methods The study included CT scans (right femur) from 51 patients, out of which 40 had various degrees of osteoporosis, but no other local pathology. Ten regions of interest in two orthogonal slices have been identified and the differences in radiodensity as well as their evolution have been statistically analyzed in terms of relative and absolute changes. Results A detailed spatial map showing the evolution of osteoporosis was obtained. As osteoporosis evolved, the relative decrease in radiodensity was inversely correlated to the radiodensity of the healthy bone. In particular, the region covering the Ward triangle decreased the most, by an average 61–62% in osteopenia and 101–106% in advanced osteoporosis, while the principal compressive group was affected the least, showing a decrease by an average 14–15% in osteopenia and 29–32% in advanced osteoporosis. The absolute decrease in radiodensity was not correlated to the radiodensity of the healthy bone and was shifted to the inferior-posterior edge of the femur. Inside the femoral head, the upper region was affected the most in absolute terms, while the greater trochanter was less affected than the femoral neck. The maximum metaphyseal cortical bone density was unaffected by the progression of osteoporosis. Conclusion Significant differences were noticed in terms of the absolute and relative osteoporotic changes in radiodensity related to different anatomical regions of the human femoral bone. These differences become more pronounced as the disease progresses.

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Section: Introductionmentioning

confidence: 99%

Mapping the Spatial Evolution of Proximal Femur Osteoporosis: A Retrospective Cross-Sectional Study Based on CT Scans

Bot,

Chirla,

Hozan

et al. 2024

IJGM

View full text Add to dashboard Cite

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Evaluation of post‐activation mandibular remodelling in children with craniofacial microsomia treated with distraction osteogenesis

Li,

Xia,

et al. 2024

Orthod Craniofacial Res

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ObjectivePatients with type IIA craniofacial microsomia (CFM) may benefit from mandibular distraction osteogenesis (MDO) treatment during childhood; however, remodelling of the mandible during the consolidation phase, which may affect the short‐term outcomes of MDO, has not yet been quantitatively analysed using computed tomography. Therefore, we aimed to investigate bone remodelling of the mandible in children with type IIA CFM treated with MDO before distractor removal and the factors that influence ramus vertical elongation efficiency.Materials and MethodsTwenty‐three children with unilateral CFM were studied between 2020 and 2024. Longitudinal computed tomography data (preoperative, end of active phase and at pre‐distractor removal) were analysed. Condyle positions and the mandibular cant were analysed using a paired‐sample t test. The relapse rates of vertical lengthening and mandibular cant were calculated. The correlation between distraction efficiency and preoperative craniofacial morphology was analysed.ResultsThe condyle on the affected side moved upwards and backwards by 28.84 ± 4.08 and 2.85 ± 4.33 mm, respectively during the active phase but lost 7.66 ± 2.64 mm of vertical extension during the consolidation phase. The relapse rates for vertical extension of the condyle and occlusal plane were 27% and 35%, respectively. The ratio of mandibular ramus height was positively related to EV.ConclusionsIn children with CFM, attention should be paid to vertical elongation instability and relapse of mandibular inclination during consolidation. Severe mandibular ramus hypoplasia is a preoperative risk factor for vertical skeletal relapse during consolidation. Further efforts are required to reduce the stress that leads to relapse.

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Biomechanical analysis analyzing association between bone mineral density and lag screw migration

Cited by 2 publications

References 38 publications

Mapping the Spatial Evolution of Proximal Femur Osteoporosis: A Retrospective Cross-Sectional Study Based on CT Scans

Mapping the Spatial Evolution of Proximal Femur Osteoporosis: A Retrospective Cross-Sectional Study Based on CT Scans

Evaluation of post‐activation mandibular remodelling in children with craniofacial microsomia treated with distraction osteogenesis

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