Preliminary biomechanical results of a novel pin configuration for external fixation of vertical shear pelvic fractures

Stewart, Rebecca G.; Kieser, David; Scholze, Mario; Hammer, Niels; Stone, Brad; Hooper, G.

doi:10.1111/ans.14822

Cited by 7 publications

(3 citation statements)

References 19 publications

(49 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be observed that following partial resection of the muscles or longer term conservation with the PE solution, joint motion increases. While musculoskeletal tissues are generally used for preliminary biomechanical tests providing useful data (Scholze et al, 2018; Stewart et al, 2018), thoracic and visceral soft tissue mechanical properties render these areas unsuitable for obtaining data similar to the unfixed condition (own unpublished results). Phenoxyethanol‐embalmed tissues appear well suited for morphometric analyses in the context of surgical research given tissue shrinkage is less marked than in formaldehyde‐fixed tissues (Trowbridge et al, 2017; Becker et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Phenoxyethanol‐Based Embalming for Anatomy Teaching: An 18 Years' Experience with Crosado Embalming at the University of Otago in New Zealand

Crosado

Löffler

Ondruschka

et al. 2020

Anatomical Sciences Ed

Self Cite

View full text Add to dashboard Cite

Embalming fixatives such as formaldehyde and phenol have been associated with occupational health hazards. While anatomists aim at replacing these chemicals, this seems presently unfeasible in particular for formaldehyde. Furthermore, fixation protocols usually require well-equipped facilities with highly experienced staff to achieve good fixation results in spite of only a minimal use of formaldehyde. Combining these aspects, a technique robust enough to be carried out by morticians is presented, resulting in durable tissues with minimal formaldehyde use. An embalming protocol involving phenoxyethanol was established, using concentrations of 7 and 1.5 Vol% of phenoxyethanol in the fixative and the conservation fluid, respectively. Visual, haptic, histological, and biomechanical properties and their perceived potential to positively influence student learning outcomes were compared to standard embalming techniques. The phenoxyethanol technique provides esthetic, durable, and odorless tissues. Bleaching is less pronounced compared to ethanol-or formaldehydebased protocols. The tissues remain pliable following the phenoxyethanol-based embalming and can be used for biomechanical experiments to some extent. Phenoxyethanol-fixed tissues are well suited for undergraduate teaching with perceived positive learning outcomes and partly for postgraduate training. Phenoxyethanol tissues provide the option to obtain well-preserved histology samples, similar to those derived from formaldehyde. The provided protocol helps replace the use of phenol and formaldehyde for conservation purposes and minimizes the use of formaldehyde for the initial injection fixation. Phenoxyethanol-based embalming forms an effective alternative to standard embalming techniques for human cadavers. It is simple to use, allowing fixation procedures to be carried out in less sophisticated facilities with non-anatomy staff. Anat Sci Educ 0: 1-16.

show abstract

Section: Resultsmentioning

confidence: 99%

Phenoxyethanol‐Based Embalming for Anatomy Teaching: An 18 Years' Experience with Crosado Embalming at the University of Otago in New Zealand

Crosado

Löffler

Ondruschka

et al. 2020

Anatomical Sciences Ed

Self Cite

View full text Add to dashboard Cite

show abstract

“…In displaced unstable pelvic injuries, the volume of the pelvis is increased and therefore accommodates larger volumes of free fluid. Thus, intrapelvic haemorrhage may result in haemodynamic instability and death, which makes these injuries some of the most time-critical injuries in emergency settings 4. Furthermore, these injuries are commonly associated with multiple other injuries and therefore damage control orthopaedics is necessary to initially stabilise the pelvis and reduce the intrapelvic volume in an attempt to tamponade the bleeding and prevent further neurovascular injury.…”

Section: Introductionmentioning

confidence: 99%

“…External fixation also permits easier access to the abdomen if emergent abdominal or pelvic surgery is required. External fixation may also permit a more erect patient posture which improves cardiopulmonary physiology, mobility and nursing care, which reduces the risk of respiratory compromise, pneumonia, venous thromboembolism and decubitus ulcers 4 10 11…”

Section: Introductionmentioning

confidence: 99%

Relative position of the supra-acetabular bone to the crestal plane: a radiological analysis

et al. 2019

View full text Add to dashboard Cite

IntroductionDisplaced unstable pelvic injuries are life threatening and require rapid reduction and stabilisation, typically achieved with an external fixator. Recently, the benefits of supra-acetabular pins have been proven; however, these are usually inserted under fluoroscopic guidance. In austere environments and in extremis, this facility is limited and fixation using anatomical landmarks is required. Thus, the aim of this study is to determine the relative position of the supra-acetabular bone to the crestal plane and examine its consistency in military-aged European personnel.MethodsA radiological review of 50 randomised pelvic CT scans in European patients aged 18–30 years from a Level 1 trauma centre was performed. The CT scans were analysed using 3D rendering software. The relative position of the supra-acetabular bone to the crestal plane was determined.ResultsThe supra-acetabular bone relative to the crestal plane was approximately 28° caudal and 24° medial to the crestal plane. The mean minimum distance from the pin’s entry point to the sciatic notch was approximately 73 mm. There were no differences noted between genders or hemipelvic side.ConclusionsThe supra-acetabular bone maintains a consistent relative position to the crestal plane. Thus, with the surgeon’s thumb on the anterior superior iliac spine (ASIS) and index finger on the iliac tubercle, defining the crestal plane, a supra-acetabular pin can be inserted into the anterior inferior iliac spine, which lies 3 cm inferior and 2 cm medial to the ASIS, and advanced along the supra-acetabular bone by angling the pin 30° caudal and 25° medial to the crestal plane.

show abstract

Achievable pin spanning angulation in anterosuperior pelvic external fixation

Young

Daily

Kee

et al. 2020

Eur J Orthop Surg Traumatol

View full text Add to dashboard Cite

Preliminary biomechanical results of a novel pin configuration for external fixation of vertical shear pelvic fractures

Abstract: It was shown that this new design may reliably withstand a seated physiological load of 250 N. However, none of the three pin configurations tested can reliably withstand a standing load of 650 N. Further experiments are needed to quantify these findings under physiological loading.

Cited by 7 publications

References 19 publications

Phenoxyethanol‐Based Embalming for Anatomy Teaching: An 18 Years' Experience with Crosado Embalming at the University of Otago in New Zealand

Phenoxyethanol‐Based Embalming for Anatomy Teaching: An 18 Years' Experience with Crosado Embalming at the University of Otago in New Zealand

Relative position of the supra-acetabular bone to the crestal plane: a radiological analysis

Achievable pin spanning angulation in anterosuperior pelvic external fixation

Contact Info

Product

Resources

About