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The shape of the distal femur: a palaeopathological comparison of eburnated and non-eburnated femora
  1. Lee Shepstonea,
  2. Juliet Rogersb,
  3. John Kirwanb,
  4. Bernard Silvermanc
  1. aSchool of Health Policy and Practice, University of East Anglia, Norwich, bRheumatology Unit, Bristol University Division of Medicine, cDepartment of Mathematics, University of Bristol
  1. Dr L Shepstone, School of Health Policy and Practice, University of East Anglia, Norwich, NR4 7TJ.

Abstract

OBJECTIVES To determine the difference in shape of the distal femur, viewed axially in two dimensions, between eburnated and non-eburnated femora.

METHODS A comparison of 52 non-eburnated and 16 eburnated femora drawn from a large archeological skeletal population. Eburnation was taken to indicate late stage osteoarthritis. Shape variability, based on landmarks, was quantified using a principal components analysis after a Procrustes alignment.

RESULTS A statistically significant difference was found between the two groups. This was with respect to the patellar groove and the shape of the medial condyle. The latter difference is consistent with bone remodelling as a knee stabilising mechanism.

CONCLUSIONS Anatomical shape can be quantified using an uncomplicated statistical technique. It was used to quantify the shape of the distal femur and demonstrate shape differences associated with osteoarthritis of the knee.

  • osteoarthritis
  • knee
  • bone remodelling

https://doi.org/10.1136/ard.58.2.72

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