Measuring skin to subarachnoid space depth in Egyptian population: A prospective cohort study.

Background: Lumbar puncture is a difficult medical skill and is used for administering subarachnoid anesthetic medications. Estimation of skin to subarachnoid space depth (SSD) helps to reduce post spinal anesthetic complications.

Aims: To measure the SDD in overall Egyptian population and to find a formula for predicting SSD in Egyptian patients.