Mechanical testing of the thoracic spine and related implants

Mannen, Erin M.; Anderson, Dennis E.

doi:10.1016/b978-0-08-100286-5.00008-1

Cited by 2 publications

(3 citation statements)

References 43 publications

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“…Notably, 200 N is also the routine maximum fatigue compressive force applied in the dynamic tests of ACDs according to ASTM F2346 [21,29,30]. In order to bridge the loading parameters in biomechanical tests with cervical spines from cadaver donors and in static and dynamic tests following ASTM F2346, an extra equivalent moment can be obtained by finely adjusting the distance between the centers of the cuboid block 01 and ACD during the finite element simulations of the static and fatigue experiments.…”

Section: The Rationality Of the Static Load Settingsmentioning

confidence: 99%

“…In dealing with such problems, the tests conducted by ASTM F2346 allow for the analysis of individual disc replacement devices and the comparison of the mechanical performance of multiple artificial intervertebral disc designs in a standard model [18][19][20][21][22][23]. Specialized test fixtures have been developed by leading machine manufacturers to conduct both static and cyclic testing of ACDs following the ASTM F2346 standard in recent decades.…”

Section: Introductionmentioning

confidence: 99%

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Biomimetic Design of Fatigue-Testing Fixture for Artificial Cervical Disc Prostheses

Cheng

Bai²,

Wang

2023

Metals

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To investigate the biomechanical performances of artificial cervical disc (ACD) prostheses, many studies have been conducted, either with cervical sections of cadavers under physiological loads or with block-like testing fixtures obeying the ASTM F2346 standard. Unfortunately, both methods are almost impossible to utilize for accurate results of lifetime anti-fatigue experiments for at least 10 million cycles due to the difficulties in cadaver preservation and great deviations of natural cervical bodies, respectively. Based on normal human cervical structural features, a novel specimen fixture was designed for testing the fatigue behavior of ACD prostheses under flexion, extension, and lateral bending conditions, with aspects of both structural and functional bionics. The equivalence between the biomimetic fatigue-testing fixture and the natural cervical sections was investigated by numerical simulations and mechanical experiments under various conditions. This study shows that this biomimetic fatigue-testing fixture could represent the biomechanical characteristics of the normal human cervical vertebrae conveniently and with acceptable accuracy.

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Section: The Rationality Of the Static Load Settingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biomimetic Design of Fatigue-Testing Fixture for Artificial Cervical Disc Prostheses

Cheng

Bai²,

Wang

2023

Metals

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“…Proper consent was obtained from the radiology department before collecting data. Since bone fusion gets complete by 6 to 9 months after surgery [10] [11], pre-operative and post-operative CT scan data of patients who underwent scoliosis correction not more than 2 months and with the age group between 10 to 20 years were selected for this study. Only 1 patient fulfilled the above-mentioned criteria.…”

Section: Data Collectionmentioning

confidence: 99%

Load bearing analysis on Lumbosacral Disc in Pre-operative and Post-operative Thoracic Scoliosis Patient

Palaniswamy¹,

Shuib²,

Koshy³

2021

AJMedTech

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Scoliosis is a musculoskeletal disorder seen all around the world. It affects both the alignment of the vertebra and intervertebral disc. Scoliosis can be treated conservatively with a cast and brace or surgically with spinal instrumentation. During planning for surgical instrumentation, several factors need to be considered. Among those, biomechanical changes in the non-scoliotic vertebrae and discs are important. This is vital in determining the future degenerative changes of the spine. For this reason, this study was conducted with a finite element model of the lumbosacral joint using CT scan files to find the total deformation and equivalent static strain of the lumbosacral disc between pre and post-operative thoracic scoliosis patient. From the results, it is evident that there is a biomechanical change in the lumbosacral disc and structural change in the vertebral alignment followed immediately after corrective surgery. The correction in the alignment of the scoliotic spine brings changes to the biomechanical functionality and load-bearing capacity of the lumbosacral intervertebral disc before and after surgery.

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Mechanical testing of the thoracic spine and related implants

Cited by 2 publications

References 43 publications

Biomimetic Design of Fatigue-Testing Fixture for Artificial Cervical Disc Prostheses

Biomimetic Design of Fatigue-Testing Fixture for Artificial Cervical Disc Prostheses

Load bearing analysis on Lumbosacral Disc in Pre-operative and Post-operative Thoracic Scoliosis Patient

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