Definition

1. Noun:
   • Anatomical landmark: A specific, roughened, and often slightly raised area or bump located on the lateral (outer) surface of the humerus (the long bone of the upper arm).
   • Muscle attachment site: It serves as the primary point of insertion for the deltoid muscle, a large, triangular muscle responsible for lifting the arm at the shoulder.

Usage Examples

• Noun:
  • The surgeon carefully identified the deltoid tuberosity to plan the incision.
  • In anatomy class, we learned that the deltoid tuberosity is a key site for muscle attachment.
  • The fracture was located just distal to the deltoid tuberosity.

Advanced Usage

• "Palpation of the deltoid tuberosity": In physical examination or clinical practice, feeling for this bony landmark to assess shoulder anatomy or locate injection sites.
  • Palpation of the deltoid tuberosity helps in administering intramuscular injections into the deltoid muscle.

Variants and Related Words

• Deltoid eminence: A less common synonym for the deltoid tuberosity.
• Deltoid muscle: The muscle that attaches to the deltoid tuberosity.
• Humerus: The bone on which the deltoid tuberosity is located.
• Tuberosity: A general anatomical term for a large, rounded, and usually roughened projection on a bone that serves as a site for muscle or ligament attachment.

Synonyms

• Deltoid eminence (anatomical synonym)
• Insertion point of the deltoid (functional description)

Related Phrases

• Attachment site for the deltoid: A descriptive phrase explaining its function.
  • The deltoid tuberosity is the crucial attachment site for the deltoid muscle.

Related Idioms

(This is a specific anatomical term, so common idioms are not applicable.)

Noun

1. a bump on the outside of the humerus where the deltoid muscle attaches