Date: October 2011.
Source: American Journal of Physical Medicine & Rehabilitation; 90(10): 844–850.
Abstract: The objective of this pilot study was to determine the usability of stereophotogrammetry (SP) as a non-invasive technique for obtaining linear measures and anatomical data of the torso in people with osteogenesis imperfecta (OI) in comparison to clinical observations. Ten participants were recruited from subjects enrolled in ongoing IRB-approved OI protocols at the National Institute of Child Health and Human Development (NICHD). Using a Gulick tape measure, anthropometer, and the SP system proprietary software, linear measurements of the torso were taken. In addition, the presence or absence of specific torso deformities was documented from both clinical observation and evaluation of SP images.. Measurements of torso diameter and circumference by SP demonstrated strong agreement with the manual measurements (ICC=0.995, 0.964, respectively). Substantial and statistically significant agreement was present between SP image evaluation and clinical observation for pectus carinatum (κ = 0.52±0.23) as well as thoracic scoliosis (κ = 0.72±0.12). The κ values between clinical observation and SP evaluations of other torso deformities were not significant. The strong correlations and p values determined by this study demonstrate the potential value of SP in studying persons with truncal deformities. However, the weak agreement between SP and some clinical observations suggests that further development of SP image analysis tools is required before SP can be used as a standard method of diagnosis or assessment of treatment success.

Article: Digital Stereophotogrammetry as a New Technique to Quantify Truncal Deformity: A Pilot Study in Persons with Osteogenesis Imperfecta.
Authors: Lisa R Gabor, Andrew P Chamberlin, Ellen Levy, Monique Perry, Holly Cintas, and Scott M Paul. Rehabilitation Medicine Department, Clinical Center, National Institutes of Health, Bethesda, MD.