Digital wrist tomosynthesis (DWT)-based finite element analysis of ultra-distal radius differentiates patients with and without a history of osteoporotic fracture

Yadav, Ram N.; Oravec, Daniel J.; Morrison, Courtney K.; Bevins, Nicholas B.; Rao, Sudhaker D.; Yeni, Yener N.

doi:10.1016/j.bone.2023.116901

Cited by 3 publications

(2 citation statements)

References 54 publications

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“…The material parameters for cortical bone, cancellous bone, necrotic zone, and internal xation were inputted into ANSYS 17.0, with corresponding material properties assigned to each component of the analysis. The FNS internal xation device was fabricated using titanium alloy material [7][8]. According to relevant biomechanical studies, the unilateral loading pressure is calculated as 2.5 times the product of body weight (M), gravity coe cient (G), and a constant value of 0.5N.…”

Section: Materials Property Assignmentmentioning

confidence: 99%

Exploring the effect of TAD、Cal-TAD and NSA on the hip preservation outcome of the treatment of femoral head necrosis through rotational osteotomy at the base of the femoral neck by using finite element analysis

Sun,

Bowen,

Zhiyuan

et al. 2024

Preprint

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Background：The calcar referenced tip-apex distance (TAD), calcar referenced tip-apex distance(Cal-TAD), and Neck-shaft Angle (NSA) have demonstrated reliability in predicting the efficacy of internal fixation following femoral neck fracture. Surgical Hip Dislocation Combined with Femoral Neck Rotational Osteotomy (SHD-FNRO) has been established as an effective treatment for femoral neck rotational osteotomy. However, the potential of TAD, Cal-TAD, and NSA as predictive factors for hip preservation outcomes remains unexplored. Purposes:The prediction value of TAD, Cal-TAD and NSA on hip preservation outcome after SHD-FNRO surgery was discussed by comparing the outcomes of hip preservation in different patients with SHD-FNRO. Methods: The clinical data of 33 patients (33 hips) who underwent rotational osteotomy at the base of the femoral neck in our hospital from 01/01/2017 to 01/12/2021 were retrospectively analyzed. Immediately after surgery, X-ray measurements were taken to assess TAD, Cal-TAD, and NSA. Subsequently, the patients were categorized into group A (successful hip preservation) and group B (failed hip preservation) for statistical analysis. Three-dimensional models with varying neck angles were constructed to evaluate maximum displacement and changes in osteotomy surface stress. Results: During an average follow-up period of approximately 40 months, a total of 26 patients achieved survival while 7 patients experienced failure in preserving the hip joint. There was no statistically significant difference observed in terms of TAD and Cal-TAD between the two groups (P>0.05). However, a statistically significant distinction was found in NSA between the two groups (P < 0.05). Biomechanical analysis revealed a close association between NSA and postoperative biomechanical alterations. Conclusion：The use of TAD and Cal-TAD demonstrated limited impact on the outcome of hip preservation in the treatment of femoral head necrosis with SHD-FNRO, while the magnitude of cervical stem angle exhibited a significant correlation with the success rate of hip preservation. Therefore, it is imperative to accurately measure and adjust the size of the cervical trunk angle during surgery to achieve enhanced postoperative efficacy.

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Section: Materials Property Assignmentmentioning

confidence: 99%

Exploring the effect of TAD、Cal-TAD and NSA on the hip preservation outcome of the treatment of femoral head necrosis through rotational osteotomy at the base of the femoral neck by using finite element analysis

Sun,

Bowen,

Zhiyuan

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The material parameters for cortical bone, cancellous bone, necrotic zone, and internal xation were inputted into ANSYS 17.0 Detailed information is presented in Table 2 , with corresponding material properties assigned to each component of the analysis. The FNS internal xation device was fabricated using titanium alloy material [7][8].…”

Section: Materials Property Assignmentmentioning

confidence: 99%

Factors influencing the outcome of hip preservation in femoral head necrosis treated with rotational osteotomy via the base of the femoral neck, combined with finite element analysis

Sun,

Bowen,

Zhiguang

et al. 2023

Preprint

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Background :The tip-apex distance (TAD), calcar referenced tip-apex distance (Cal-TAD), and neck-shaft angle (NSA) demonstrate reliability in predicting outcomes following internal fixation of femoral neck fractures. However, the potential influence of TAD, Cal-TAD, and NSA on predicting hip preservation outcomes through trans-trochanteric rotational osteotomy at the base of the femoral neck for treating femoral head necrosis remains unexplored. Purposes: To assess the prognostic value of TAD, Cal-TAD, and NSA for hip preservation outcomes following rotational osteotomy at the base of the femoral neck in conjunction with finite element analysis, we compared the outcomes of different patients who underwent this procedure for femoral head necrosis. Methods: The clinical data of 33 patients (33 hips) who underwent rotational osteotomy at the base of the femoral neck between January 2017 and December 2021 in our hospital were retrospectively analyzed. TAD, Cal-TAD, and NSA were measured on immediate postoperative radiographs, and the patients were categorized into Alive and Dead groups based on hip preservation outcomes for statistical analysis. Additionally, three-dimensional models with varying neck shaft angles were constructed to examine changes in maximum displacement of the femoral head and stress on the osteotomy surface. Results:During a mean follow-up period of approximately 40 months, 26 patients survived while 7 patients experienced hip preservation failure. The differences in age, TAD, and Cal-TAD between the two groups were not statistically significant (P>0.05), whereas NSA exhibited statistical significance (P<0.05). Biomechanical analysis revealed a close association between NSA and postoperative biomechanical changes. Conclusion: When performing rotational osteotomy at the base of the femoral neck for the treatment of femoral head necrosis, both TAD and Cal-TAD exhibit negligible impact on hip preservation outcomes, while the size of NSA significantly influences surgical success rates. Therefore, meticulous attention should be given to precise measurement and adjustment of NSA during surgery in order to achieve optimal surgical outcomes.

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Strength and strain distributions obtained from digital wrist tomosynthesis discriminate patients with and without a history of fragility fracture

Yadav,

Oravec,

Cushman

et al. 2025

Bone

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Digital wrist tomosynthesis (DWT)-based finite element analysis of ultra-distal radius differentiates patients with and without a history of osteoporotic fracture

Cited by 3 publications

References 54 publications

Exploring the effect of TAD、Cal-TAD and NSA on the hip preservation outcome of the treatment of femoral head necrosis through rotational osteotomy at the base of the femoral neck by using finite element analysis

Exploring the effect of TAD、Cal-TAD and NSA on the hip preservation outcome of the treatment of femoral head necrosis through rotational osteotomy at the base of the femoral neck by using finite element analysis

Factors influencing the outcome of hip preservation in femoral head necrosis treated with rotational osteotomy via the base of the femoral neck, combined with finite element analysis

Strength and strain distributions obtained from digital wrist tomosynthesis discriminate patients with and without a history of fragility fracture

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