The posterior Chapman point for the ileum corresponds to which spinal levels?

• A. T10 and T11
• B. T12 and L1
• C. T8 and T9
• D. L1 and L2

Answer: (A)

Chapman points reflect where visceral structures refer pain and reflexively tense the surrounding tissues; posterior points line up with the spinal levels that supply the corresponding organ via autonomic nerves. For the ileum, a part of the midgut, the conventional mapping places the posterior Chapman point around the lower thoracic region, specifically near the transverse processes of the T10 and T11 vertebrae. This is why the tomographic area to palpate and treat on the back is described as two adjacent thoracic levels: T10 and T11. The other level pairs do not align with the typical posterior mapping used for the ileum, so they’re not considered correct in standard charts.