In a right SBS sidebending dysfunction, how do the right and left hands present?

• A. Right hand: Fingers separate and inferior; Left hand: Fingers approximate and superior
• B. Right hand: Fingers approximate and superior; Left hand: Fingers separate and inferior
• C. Right hand: Fingers neutral; Left hand: Fingers neutral
• D. Right hand: Fingers separate and superior; Left hand: Fingers approximate and inferior

Answer: (A)

Sidebending dysfunction of the SBS means one side of the cranial base sits relatively lower while the other sits higher, and this asymmetry shows up in how your monitoring hands contact the skull. For a right-sided sidebending, the right side of the sphenoid/occiput pair is depressed, so the right-hand contact tends to be more spread apart and sit lower (inferior). The left-hand contact moves closer together and sits higher (superior). That opposite pattern between the two hands is the telltale sign of right SBS sidebending. Other patterns would show different relationships—for example, a pattern where both hands are neutral or where the right hand is elevated and separated would not match a right-side tilt.