The fatality risk for older crash occupants continues to trend upward with small, elderly females identified as a vulnerable group. During near-side crashes, the thorax remains the most frequent and severely injured body region. The biomechanical responses of 5th percentile female ATDs, the SID-IIs and WorldSID-05F, were compared to the responses of five small, elderly, post-mortem human subjects (PMHS) tested in a realistic near-side crash scenario at 50 kph. Each subject was seated on a mass production seat equipped with side airbag and standard three-point restraint with a pretensioner. One SID-IIs test and four WorldSID-05F tests, two tests using the RibEye multi-point deflection measurement system and two tests using IR-TRACCs, were compared to spinal kinematic corridors created from five PMHS tests and BioRank was calculated using the Biofidelity Ranking System. All five PMHS and each ATD were fitted with a chestband to quantify external chest deflection. Despite similarities in spinal kinematics (BRS<2) and AP chest deflection, differences in lateral chest deflection resulted in inaccuracies in injury prediction from the SID-IIs ATD compared to actual injuries sustained by the PMHS. These results suggest updated injury metrics are needed for current side-impact ATDs to accurately predict injury risk for small females in side-impact scenarios with combined loading present.