Ulna

Parent Structures

• Bones of the Forearm

Bone Classification

• Long

Bony Features

• Articular area on Ulna for Intra-articular disc
• Brachialis Impression
• Coronoid Process
• Head of the Ulna
• Neck of the Ulna
• Olecranon
• Radial Notch on Ulna
• Supinator Crest
• Trochlear Notch
• Tuberosity of the Ulna
• Ulnar Styloid Process

Attaching Structures as Origin

• Abductor Pollicis Longus - Upper Part o the Posterior Surface below the Anconeus
• Extensor Indicis - Lower Part of the Posterior Surface
• Extensor Pollicis Longus - Lateral part of the Middle Third of the Posterior Surface
• Flexor Carpi Ulnaris - Upper two-thirds of the Posterior Border of the Ulna via an aponeurotic attachment
• Flexor Digitorum Profundus - Upper three quarters of the anterior and medial surfaces
• Interosseous Membrane of the Forearm - Lateral Side along the length
• Pronator Quadratus - Lower Quater of the Anterior Surface of the Ulna
• Pronator Teres - Pronator Ridge

Attaching Structures as Insertion

• Anconeus - Upper Quarter of the Posterior Surface

Associated Joints

• Elbow
• Superior Radioulnar

Structures Attaching to Bony Features as Origin

• Coronoid Process
  • Flexor Digitorum Profundus - Medial Side
  • Flexor Digitorum Superficialis - Sublime Tubercle at the upper medial part
• Olecranon
  • Flexor Carpi Ulnaris - Medial Border
  • Transverse Ulnar Collateral Ligament
• Radial Notch on Ulna
  • Annular Ligament - Posterior Aspect
  • Quadrate Ligament - Lower Border
• Supinator Crest
  • Supinator
• Ulnar Styloid Process
  • Palmar Ulnocarpal Ligament - anterior edge
  • Ulnar Collateral Carpal Ligament

Structures Attaching to Bony Features as Insertion

• Coronoid Process
  • Anterior Ulnar Collateral Ligament - Attaches to the Medial Edge of the Coronoid Process
  • Brachialis - Triangular Brachialis Imporession on the Inferior part of the Coronoid Process
  • Transverse Ulnar Collateral Ligament
• Olecranon
  • Anconeus - Lateral Surface
  • Posterior Ulnar Collateral Ligament - Attaches to the Medial Edge of the Olecranon
• Radial Notch on Ulna
  • Annular Ligament - Anterior Aspect
  • Radial Collateral Ligament
• Tuberosity of the Ulna
  • Brachialis