Mechanical analysis of the vascularized fibular graft prosthetic composite (VFGPC) for internal hemipelvectomy reconstruction

Jonathan Morris, Rui Yang, Michael Roth, Jonathan Gill, Richard Gorlick, Yungtai Lo, Bang H. Hoang, Evan S. Garfein, David S. Geller

Research output: Contribution to journalArticle

Abstract

INTRODUCTION: The vascularized fibular graft prosthetic composite (VFGPC) is used for reconstruction after internal hemipelvectomy. The purpose of this study was to create a mathematical model that calculates the mechanical effects of the vascularized fibular graft on the VFGPC. METHODS: The effects of the VFG positioning were calculated based on three-dimensional static analyzes to determine the direction, magnitude, and distribution of the forces through the prosthesis and VFG. The shear stress (SS) and cyclic loads to failure (CLF) were calculated. By varying the location of the VFG on the sacrum the zone of acceptable placement was calculated. RESULTS: Utilization of the VFG decreased the forces through the implant by 15-35% and decreased SS 20-54%, depending on stance. The CLF improved by 94%. The zone of acceptable placement for the VFG was found to be between 0° and 15° of the vertical axis in the sagittal plane and 0° and 30° of the posterior axis in coronal plane. CONCLUSION: Determining the position of the VFG pre-operatively allows for the creation of a customized cutting jig can be utilized to create graft allowing for accurate fibular osteotomies, minimization of ischemia time, and decreased intra-operative handling of the graft.

Original languageEnglish (US)
Pages (from-to)864-869
Number of pages6
JournalJournal of Surgical Oncology
Volume115
Issue number7
DOIs
StatePublished - Jun 1 2017

Fingerprint

Hemipelvectomy
Transplants
Sacrum
Osteotomy
Prostheses and Implants
Theoretical Models
Ischemia

Keywords

  • internal hemipelvectomy
  • pelvic tumors
  • Peri-acetabular reconstruction
  • vascularized fibular graft

ASJC Scopus subject areas

  • Surgery
  • Oncology

Cite this

Mechanical analysis of the vascularized fibular graft prosthetic composite (VFGPC) for internal hemipelvectomy reconstruction. / Morris, Jonathan; Yang, Rui; Roth, Michael; Gill, Jonathan; Gorlick, Richard; Lo, Yungtai; Hoang, Bang H.; Garfein, Evan S.; Geller, David S.

In: Journal of Surgical Oncology, Vol. 115, No. 7, 01.06.2017, p. 864-869.

Research output: Contribution to journalArticle

@article{af7a118e97744d9ab5a58d1ea40d7a1a,
title = "Mechanical analysis of the vascularized fibular graft prosthetic composite (VFGPC) for internal hemipelvectomy reconstruction",
abstract = "INTRODUCTION: The vascularized fibular graft prosthetic composite (VFGPC) is used for reconstruction after internal hemipelvectomy. The purpose of this study was to create a mathematical model that calculates the mechanical effects of the vascularized fibular graft on the VFGPC. METHODS: The effects of the VFG positioning were calculated based on three-dimensional static analyzes to determine the direction, magnitude, and distribution of the forces through the prosthesis and VFG. The shear stress (SS) and cyclic loads to failure (CLF) were calculated. By varying the location of the VFG on the sacrum the zone of acceptable placement was calculated. RESULTS: Utilization of the VFG decreased the forces through the implant by 15-35{\%} and decreased SS 20-54{\%}, depending on stance. The CLF improved by 94{\%}. The zone of acceptable placement for the VFG was found to be between 0° and 15° of the vertical axis in the sagittal plane and 0° and 30° of the posterior axis in coronal plane. CONCLUSION: Determining the position of the VFG pre-operatively allows for the creation of a customized cutting jig can be utilized to create graft allowing for accurate fibular osteotomies, minimization of ischemia time, and decreased intra-operative handling of the graft.",
keywords = "internal hemipelvectomy, pelvic tumors, Peri-acetabular reconstruction, vascularized fibular graft",
author = "Jonathan Morris and Rui Yang and Michael Roth and Jonathan Gill and Richard Gorlick and Yungtai Lo and Hoang, {Bang H.} and Garfein, {Evan S.} and Geller, {David S.}",
year = "2017",
month = "6",
day = "1",
doi = "10.1002/jso.24593",
language = "English (US)",
volume = "115",
pages = "864--869",
journal = "Journal of Surgical Oncology",
issn = "0022-4790",
publisher = "Wiley-Liss Inc.",
number = "7",

}

TY - JOUR

T1 - Mechanical analysis of the vascularized fibular graft prosthetic composite (VFGPC) for internal hemipelvectomy reconstruction

AU - Morris, Jonathan

AU - Yang, Rui

AU - Roth, Michael

AU - Gill, Jonathan

AU - Gorlick, Richard

AU - Lo, Yungtai

AU - Hoang, Bang H.

AU - Garfein, Evan S.

AU - Geller, David S.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - INTRODUCTION: The vascularized fibular graft prosthetic composite (VFGPC) is used for reconstruction after internal hemipelvectomy. The purpose of this study was to create a mathematical model that calculates the mechanical effects of the vascularized fibular graft on the VFGPC. METHODS: The effects of the VFG positioning were calculated based on three-dimensional static analyzes to determine the direction, magnitude, and distribution of the forces through the prosthesis and VFG. The shear stress (SS) and cyclic loads to failure (CLF) were calculated. By varying the location of the VFG on the sacrum the zone of acceptable placement was calculated. RESULTS: Utilization of the VFG decreased the forces through the implant by 15-35% and decreased SS 20-54%, depending on stance. The CLF improved by 94%. The zone of acceptable placement for the VFG was found to be between 0° and 15° of the vertical axis in the sagittal plane and 0° and 30° of the posterior axis in coronal plane. CONCLUSION: Determining the position of the VFG pre-operatively allows for the creation of a customized cutting jig can be utilized to create graft allowing for accurate fibular osteotomies, minimization of ischemia time, and decreased intra-operative handling of the graft.

AB - INTRODUCTION: The vascularized fibular graft prosthetic composite (VFGPC) is used for reconstruction after internal hemipelvectomy. The purpose of this study was to create a mathematical model that calculates the mechanical effects of the vascularized fibular graft on the VFGPC. METHODS: The effects of the VFG positioning were calculated based on three-dimensional static analyzes to determine the direction, magnitude, and distribution of the forces through the prosthesis and VFG. The shear stress (SS) and cyclic loads to failure (CLF) were calculated. By varying the location of the VFG on the sacrum the zone of acceptable placement was calculated. RESULTS: Utilization of the VFG decreased the forces through the implant by 15-35% and decreased SS 20-54%, depending on stance. The CLF improved by 94%. The zone of acceptable placement for the VFG was found to be between 0° and 15° of the vertical axis in the sagittal plane and 0° and 30° of the posterior axis in coronal plane. CONCLUSION: Determining the position of the VFG pre-operatively allows for the creation of a customized cutting jig can be utilized to create graft allowing for accurate fibular osteotomies, minimization of ischemia time, and decreased intra-operative handling of the graft.

KW - internal hemipelvectomy

KW - pelvic tumors

KW - Peri-acetabular reconstruction

KW - vascularized fibular graft

UR - http://www.scopus.com/inward/record.url?scp=85019540951&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85019540951&partnerID=8YFLogxK

U2 - 10.1002/jso.24593

DO - 10.1002/jso.24593

M3 - Article

C2 - 28543392

AN - SCOPUS:85019540951

VL - 115

SP - 864

EP - 869

JO - Journal of Surgical Oncology

JF - Journal of Surgical Oncology

SN - 0022-4790

IS - 7

ER -