Ulna

Os ulnae

The ulna is the longer forearm bone with a prominent olecranon process at its proximal end. The trochlear notch articulates with the trochlea of the humerus. The coronoid process prevents posterior dislocation. The head and styloid process are at the distal end.

Loại Bone
Hệ thống cơ thể Skeletal
Vùng cơ thể Forearm
Cấu trúc cha forelimb zeugopod bone
Tên Latin Os ulnae
FMA ID 23466

Chức năng

The medial bone of the forearm forming the primary articulation at the elbow. Provides stability during forearm rotation and serves as the axis around which the radius rotates.

Tầm quan trọng lâm sàng

Olecranon fractures result from direct falls on the elbow. Monteggia fractures involve ulnar shaft fracture with radial head dislocation. The ulnar nerve passes posterior to the medial epicondyle, vulnerable to compression.

Câu hỏi thường gặp

What is the Ulna?
The ulna is the longer forearm bone with a prominent olecranon process at its proximal end. The trochlear notch articulates with the trochlea of the humerus. The coronoid process prevents posterior dislocation. The head and styloid process are at the distal end.
What is the function of the Ulna?
The medial bone of the forearm forming the primary articulation at the elbow. Provides stability during forearm rotation and serves as the axis around which the radius rotates.
What body system is the Ulna part of?
The Ulna is part of the Skeletal.
What conditions affect the Ulna?
Olecranon fractures result from direct falls on the elbow. Monteggia fractures involve ulnar shaft fracture with radial head dislocation. The ulnar nerve passes posterior to the medial epicondyle, vulnerable to compression.
Where is the Ulna located?
The Ulna is located in the Forearm region of the body.

Cấu trúc liên quan

articulation joint nutrient foramen conduit outer fibrous layer of periosteum capsular layer of periosteum periosteum pre-cartilage condensation pre-chondrogenic condensation postcranial axial skeleton axial skeleton radial element actinost cavity of bone organ bone organ cavity

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Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.