Upper limb
Coracoclavicular ligament (Conoid & Trapezoid ligaments)
Ligamentum coracoclaviculare (Lig. trapezoideum & Lig. conoideum)
- Origin
- Coracoid process of the scapula
- Insertion
- Conoid tubercle and trapezoid line on the inferior surface of the clavicle
- Function
- Primary vertical stabilizer of the clavicle relative to the scapula; couples scapular tilt to clavicular axial rotation
- Innervation
- Suprascapular nerve (C5–C6)
- Movement & chain
- Transmits forces that drive ~40° posterior axial clavicular rotation during arm elevation
- Palpation
- Deep palpation in infraclavicular fossa near the coracoid process
- Clinical
- Complete tear causes high-grade AC separation (Rockwood types III–V) requiring surgical reconstruction (e.g., TightRope procedure).
- Segmental innervation
- C5–C6
- In clinical practice
- Post-surgical immobilization protocols and gradual scapular kinetic chain rehabilitation
- Region in the model
- Upper limb