PMID: 9427833Jan 1, 1997Paper

Further studies into proximal interphalangeal joint dimensions for the design of a surface replacement prosthesis: medullary cavities and transverse plane shapes

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
H E Ash, A Unsworth

Abstract

The proximal and middle phalanges from 83 proximal interphalangeal joints (PIPJs) were set in clear plastic and sectioned in the transverse plane leaving the heads whole. The sections were cleaned, shadowgraphed and measured. The medullary canals were marked on sagittal and frontal plane shadowgraphs of the intact bones and analysed. The information was then used in the design of a surface replacement prosthesis for the PIPJs. The main dorsal surface of the proximal phalanx (PP) was found to be angled to the longitudinal baseline of the bone by a mean of 5.19 degrees. This angle increased just proximal to the phalangeal head to a mean of 11.84 degrees. The mean ratio between these angles was 2.71. The phalangeal shaft bone was thicker laterally than dorsally and palmarly, and thicker dorsally than palmarly for the proximal and middle phalanges throughout the length of the bone. The shape and size of the transverse cross-section of the medullary canal changed throughout the length of the shaft. The centreline of the PP medullary canal coincided with the midline of the bone in the frontal plane and was approximately a straight line along the length of the canal. In the sagittal plane the centreline was slightly palmar to the midl...Continue Reading

References

Jan 1, 1975·Scandinavian Journal of Plastic and Reconstructive Surgery·C G HagertA Movin
Jan 1, 1996·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·H E Ash, A Unsworth

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Citations

May 29, 2000·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·H E Ash, A Unsworth
Mar 12, 2008·The Journal of Hand Surgery, European Volume·J Field
Jun 30, 2011·Computer Methods in Biomechanics and Biomedical Engineering·Kent D ButzEric A Nauman
Jan 10, 2014·The Journal of Hand Surgery, European Volume·C RiesB Hohendorff
Sep 3, 2013·Hand : Official Journal of the American Association for Hand Surgery·Kent D ButzEric A Nauman

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