AN ASSESSMENT OF HOW BONE STRESS ACROSS THE FIRST METATARSOPHALANGEAL JOINT VARIES IN DIFFERENT FOOT STRUCTURES, UTILISING FINITE ELEMENTAL ANALYSIS

R. Russell; R. Mootanah; A. Truchetet; S. Rao; H.J. Hillstrom

doi:10.1302/1358-992X.95BSUPP_21.BOFAS2012-013

Article alerts Social media

Current issue

Foot & Ankle

AN ASSESSMENT OF HOW BONE STRESS ACROSS THE FIRST METATARSOPHALANGEAL JOINT VARIES IN DIFFERENT FOOT STRUCTURES, UTILISING FINITE ELEMENTAL ANALYSIS

The British Orthopaedic Foot & Ankle Society (BOFAS) Annual Scientific Meeting

R. Russell
R. Mootanah
A. Truchetet
S. Rao
H.J. Hillstrom

AN ASSESSMENT OF HOW BONE STRESS ACROSS THE FIRST METATARSOPHALANGEAL JOINT VARIES IN DIFFERENT FOOT STRUCTURES, UTILISING FINITE ELEMENTAL ANALYSIS

Russell R, Mootanah R, Truchetet A, Rao S, Hillstrom H. AN ASSESSMENT OF HOW BONE STRESS ACROSS THE FIRST METATARSOPHALANGEAL JOINT VARIES IN DIFFERENT FOOT STRUCTURES, UTILISING FINITE ELEMENTAL ANALYSIS. Orthop Procs. 2013;95-B(SUPP_21):13-13. doi:10.1302/1358-992X.95BSUPP_21.BOFAS2012-013

Russell, R., et al. “AN ASSESSMENT OF HOW BONE STRESS ACROSS THE FIRST METATARSOPHALANGEAL JOINT VARIES IN DIFFERENT FOOT STRUCTURES, UTILISING FINITE ELEMENTAL ANALYSIS.” Orthopaedic Proceedings, vol. 95-B, no. SUPP_21, 2013, pp. 13-13., https://doi.org/10.1302/1358-992X.95BSUPP_21.BOFAS2012-013

Russell, R., Mootanah, R., Truchetet, A., Rao, S., & Hillstrom, H. (2013). AN ASSESSMENT OF HOW BONE STRESS ACROSS THE FIRST METATARSOPHALANGEAL JOINT VARIES IN DIFFERENT FOOT STRUCTURES, UTILISING FINITE ELEMENTAL ANALYSIS. Orthopaedic Proceedings, 95-B(SUPP_21), 13-13. https://doi.org/10.1302/1358-992X.95BSUPP_21.BOFAS2012-013

Russell, R., Mootanah, R., Truchetet, A., Rao, S. and Hillstrom, H. (2013) “AN ASSESSMENT OF HOW BONE STRESS ACROSS THE FIRST METATARSOPHALANGEAL JOINT VARIES IN DIFFERENT FOOT STRUCTURES, UTILISING FINITE ELEMENTAL ANALYSIS.” Orthopaedic Proceedings, 95-B(SUPP_21), pp. 13-13. Available at: https://doi.org/10.1302/1358-992X.95BSUPP_21.BOFAS2012-013

Russell, R., R. Mootanah, A. Truchetet, S. Rao, and H.J. Hillstrom. “AN ASSESSMENT OF HOW BONE STRESS ACROSS THE FIRST METATARSOPHALANGEAL JOINT VARIES IN DIFFERENT FOOT STRUCTURES, UTILISING FINITE ELEMENTAL ANALYSIS.” Orthopaedic Proceedings 95-B, no. SUPP_21 (2013): 13-13. https://doi.org/10.1302/1358-992X.95BSUPP_21.BOFAS2012-013

Russell R, Mootanah R, Truchetet A, Rao S, Hillstrom H. AN ASSESSMENT OF HOW BONE STRESS ACROSS THE FIRST METATARSOPHALANGEAL JOINT VARIES IN DIFFERENT FOOT STRUCTURES, UTILISING FINITE ELEMENTAL ANALYSIS. Orthop Procs. 2013 Apr 1;95-B(SUPP_21):13-13. https://doi.org/10.1302/1358-992X.95BSUPP_21.BOFAS2012-013

Copy to clipboard

BibTeX

EndNote

RIS

Abstract

Introduction

Osteoarthritis commonly affects the first metatarsophalangeal joint. Stress across this joint has been postulated to increase the incidence of osteoarthritis. Certain foot structures have been associated with a higher incidence of osteoarthritis of the big toe. Utilizing finite elemental analysis, bone stress across the first metatarsophalangeal joint was calculated during mid stance phase of gait and compared in different foot structures.

Method

A geometrically accurate three dimensional model of the first metatarsophalangeal joint was created utilising a high resolution 7 tesla MRI and Mimics v14 imaging software. Planus, rectus and cavus feet were simulated by varying the metatarsophalangeal declination angle to 10.1, 20.2 and 30.7 degrees, respectively. A non-manfold computer aided design technique in Mimics v14.2 and finite element method in ANSYS v12 FE were utilised to create the boundary conditions, representing the double support stance phase of gait. Using information from 61 asymptomatic patients with different foot types walking over a Novel emed-x plantar pressure measuring system, plantar loading conditions were applied. Finite elemental analysis was used to predict stress in the first metatarsophalangeal joint in the different foot types.

Results

The peak stresses in the distal first metatarsophalangeal joint cartilage were 1.1×10(6) Pa, 6.0×10(5) Pa and 9.7×10(5) Pa for planus, rectus and cavus foot types, respectively. This corresponds to 83.3 percent and 61.6 percent increases in first metatarsophalangeal joint contact stress for the planus and cavus feet relative to the rectus foot.

Conclusion

The results suggest there is a higher contact stress of the first metatarsophalangeal joint in patients with pes planus and pes cavus compared to the rectus foot. This may account for the increase risk of first metatarsophalangeal joint osteoarthritis in patients with pes planus.

Further work has been initiated utilising this model to measure first metatarsophalangeal joint stress with different hindfoot loading.