A 14-year-old male has localized back pain after diving. Which test would best assess the symmetry of PSIS during single limb stance?

• A. Single-Leg Stance Test
• B. Stork Standing Test
• C. Balance Beam Test
• D. Functional Reach Test

Answer: (B)

The Stork Standing Test is particularly effective in assessing the symmetry of the posterior superior iliac spine (PSIS) during single limb stance for several reasons. This test focuses on the stability and balance of the individual while standing on one leg, which inherently places an emphasis on the pelvis and lower back.

During the Stork Standing Test, the patient is required to balance on one leg while flexing the hip of the opposite leg. This position helps to highlight any asymmetries in the pelvic alignment, particularly in the PSIS region. If one side of the pelvis drops or elevates during this stance, it can indicate muscular imbalances, joint restrictions, or other mechanical issues that may be contributing to the localized back pain experienced by the patient.

In contrast, the Single-Leg Stance Test largely serves to assess general balance rather than specific anatomical alignment, and the other tests, such as the Balance Beam Test and Functional Reach Test, are more focused on overall stability and mobility rather than isolating the pelvic region. Thus, the Stork Standing Test is the most suitable choice for evaluating symmetry in the PSIS during a single limb stance in this context.