The reviewed studies were classified into 9 of the 15 potential study designs described by the AAOP study design classification scale .
Abbreviations: AAOP = American Academy of Orthotists and Prosthetists, ADL = activity of daily living, BP = body-powered, EES = empirical evidence statement, EMG = electromyography, fMRI = functional magnetic resonance imaging, MYO = myoelectric, OIF/OEF = Operation Iraqi Freedom/ Operation Enduring Freedom, ROM = range of motion, SHAP = Southampton Hand Assessment Procedure, TD = terminal device.
Funding/Support: This material was based on work supported by the AAOP.
Based on five studies of low to moderate quality, with quality assessment based on the AAOP Evidence Report Guidelines described in the "Methods" (p.
Additionally, the AAOP guidelines  that were used to assess quality of studies in group II and III could not be applied to systematic reviews and publications of device description that we designated as "individual opinion" (X2 [Appendix 1, available online only]) for want of a better fitting category.
Abbreviations: 3-D = three-dimensional, AAOP = American Academy of Orthotists and Prosthetists, CAD/CAM = computer-aided design/computer-aided manufacturing, CI = confidence interval, CT = computer tomography, ECF = extracellular fluid, EV = external validity, IV = internal validity, MR = magneto-rheologic, MRI = magnetic resonance imaging, PVD = peripheral vascular disease, SD = standard deviation, SEM = standard error of the mean, SXCT = spiral X-ray computer tomography.
Department of Education Grant (H235K080004) to the AAOP.
Only the region of the socket comparable with the electronic AAOP shape file, which ended approximately 1 cm above the knee, was used for evaluation.
The digitized socket shape was aligned with the electronic AAOP file shape with algorithms described in detail elsewhere .
Comparisons were made between the socket shapes and electronic AAOP files for volume, cross-sectional area, radii, and PT diameter.