Definition

1. Adjective:
   • Of or relating to the ischium: Pertaining to the ischial bone, which is the lower and back part of the hip bone.
   • Relating to or caused by sciatica: Pertaining to the condition characterized by pain along the path of the sciatic nerve, often due to compression or irritation.

Usage and Examples

• Adjective:
  • The patient complained of severe sciatic pain radiating down his leg. (The pain is related to the sciatic nerve or the condition of sciatica.)
  • The surgeon examined the sciatic notch in the pelvis. (This refers to the anatomical structure related to the ischium.)

Advanced Usage

• "Sciatic nerve": The large nerve extending from the lower back down the back of each leg, formed by nerve roots from the spinal cord.
  • Compression of the sciatic nerve can cause numbness and tingling.
• "Sciatic foramen": An opening in the pelvis through which the sciatic nerve passes.
  • The piriformis muscle is located near the sciatic foramen.

Variants and Related Words

• Sciatica (noun): A medical condition involving pain, weakness, or tingling along the sciatic nerve pathway.
  • She was diagnosed with sciatica after an MRI scan.
• Ischiatic (adjective): A less common synonym for 'sciatic,' specifically relating to the ischium.
  • The ischiatic tuberosity is the part of the pelvis you sit on.

Synonyms

• Ischial: Pertaining to the ischium.
• Ischiatic: (Technical) Relating to the ischium.

Notes on Different Meanings

• The primary use of sciatic is medical/anatomical. Its first meaning relates to the ischium (a bone). Its second, more common meaning relates to the sciatic nerve and the pain condition (sciatica) associated with it. These meanings are connected, as the sciatic nerve passes near the ischial region.

Adjective

1. of or relating to the ischium (or the part of the hipbone containing it)
   • sciatic nerve
2. relating to or caused by or afflicted with sciatica