The pattern of degenerative joint disease (DJD) of the intervertebral and apophyseal joints of the vertebral column of 81 skeletons from the thirteenth to fourteenth! century medieval priory cemetery of St. Andrew, Fishergate, York, was :recorded in relation to their location of interment: eastern cemetery, southern cemetery, and intramurally (within the priory buildings). Archaeological context and ethnohistorical accounts support the interpretation that people of different social status were buried in these areas. Linear discriminant function analysis and paired Kolmogorov-Smirnov tests showed that the differences in vertebral column DJD pattern and severity among the three subgroups were not statistically significant. As the archaeological and historical evidence seems reliable, it is argued that the analysis of DJD of the vertebral column might not be ideal to study the effects of normal activity patterns, a conclusion which supports the results of recent bioarchaeological research. Further, high-low plots demonstrate that the differences in DJD pattern were located between intervertebral and apophyseal joints of individuals rather than between subgroups of the cemetery. It is thought that this difference was produced as a response to erect posture during bipedal locomotion, reflecting vertebral curvatures, rather than differing occupational stresses. Thus, due to biological. constraints on its function, the vertebral column might not be an ideal structure to study markers of occupational stress. (C) 1997 Wiley-Liss, Inc.
