Bone radiogrametry: caliper versus magnifying glass

Calcified Tissue International
H Rico, E R Hernandez

Abstract

Radiogrametry was done on 100 hands by two observers using two methods: (1) caliper and (2) magnifying glass measurement. At the mid-point of the second metacarpal, the total width (D) and medullary width (d) were measured and cortical thickness (C) was calculated from the difference (D-d). Statistical analysis disclosed that the intra-observer CV is smaller for both observers using the magnifying glass than with the caliper (1.9 and 2.1% vs. 2.8 and 4.3%, respectively). The inter-observer CV is also less with the magnifying glass (4.2 and 5.7% vs. 6.2 and 6.9%, respectively). Although measurements made with each method correlate significantly, the values (mean +/- SD) obtained in isolated measurements using each method differ significantly, with C for both observers, as well as the intra-observer coefficient of variation (CV), being smaller. These results, which demonstrated different bone mass values as quantitated using a caliper or magnifying glass, indicate the greater reliability and precision of the latter method.

References

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Citations

Jan 1, 1991·Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research·H E Meema
Sep 1, 1991·Clinical Rheumatology·E R HernandezH Rico
Jun 18, 2003·European Journal of Radiology·Pierre NanyanDaniel Courteix
Aug 1, 1996·European Journal of Clinical Investigation·E RipollH Rico
Apr 20, 2001·Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry·Z HuachouA Nagano
Apr 1, 1992·European Journal of Pediatrics·J PalaciosJ I Rodríguez

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