Radial groove

{{Short description|Spiral groove on the surface of the humerus}}

{{Infobox bone

| Name = Humerus

| Latin = sulcus nervi radialis

| Image = Radial sulcus.png

| Caption = Left humerus. Posterior view. (Label, visible at center, is "Groove for radial nerve")

| Image2 =

| Caption2 =

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The radial groove (also known as the musculospiral groove, radial sulcus, or spiral groove) is a broad but shallow oblique depression for the radial nerve and deep brachial artery. It is located on the center of the lateral border of the humerus bone.{{Cite journal|author=Sadan AY|author2=Ibrahim TEKDEMIR|author3=Ugur SAYLI|author4=Alaittin ELHAN|author5=K. Mine ERBIL|author6=Ruhgun BASAR|date=October 1999|title=Relation of the Radial Nerve with the Sulcus Nervi Radians: A Morphometric Study|url=https://www.jstage.jst.go.jp/article/ofaj1936/76/4/76_197/_pdf|journal=Okajimas Folia Anatomica Japonica|volume=76|issue=4|pages=197–202|doi=10.2535/ofaj1936.76.4_197|pmid=10565203|doi-access=free}} It is situated alongside the posterior margin of the deltoid tuberosity, ending at its inferior margin.{{Cite book |last=Martini |first=Frederic |title=Human Anatomy |last2=Tallitsch |first2=Robert B. |last3=Nath |first3=Judi L. |publisher=Pearson |year=2017 |isbn=9780134320762 |edition=9th |pages=177}}

Although it provides protection to the radial nerve, it is often involved in compressions on the nerve (due to external pressure due to surgery) that can cause radial nerve palsy.