Scapholunate ligament complex
Citation, DOI & article data
Citation:
Dixon, A., Knipe, H. Scapholunate ligament complex. Reference article, Radiopaedia.org. (accessed on 30 Sep 2022) https://doi.org/10.53347/rID-34420
Permalink:
rID:
34420
Article created:
19 Feb 2015 by Dr Andrew Dixon ◉
Revisions:
6 times by 2 users - see full revision history
System:
Section:
Synonyms:
- Scapholunate ligament
The scapholunate ligament complex is a U-shaped ligamentous complex joining the lunate and the scaphoid.
Gross anatomy
It is divided into dorsal, volar and intermediate components with surrounding secondary stabilizers.
Dorsal component
- short, transverse collagen fibers
- 3 mm thick
- blends with joint capsule, scaphotriquetral and intercarpal ligaments
- strongest portion of the complex
- controls flexion/extension
- complete defect is usually symptomatic
Volar component
- oblique collagen fibers
- 1 mm thick
- blends with extrinsic volar radioscapholunate ligament
- controls rotational motion
- major proprioceptive role
Intermediate/interosseous component
- located proximally and centrally and therefore may be referred to as the central or proximal component
- fibrocartilage
- sparse neurovascular supply
- weakest portion of the complex
- extends a few millimeters into the joint, akin to a meniscus
- often asymptomatic when torn in isolation
- usually tears at the scaphoid attachment
Secondary stabilizers
- scapho-trapezial-trapezoidal ligament
- radio-scapho-capitiate ligament
Related pathology
Quiz questions
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References
- 1. Bateni CP, Bartolotta RJ, Richardson ML et-al. Imaging key wrist ligaments: what the surgeon needs the radiologist to know. AJR Am J Roentgenol. 2013;200 (5): 1089-95. doi:10.2214/AJR.12.9738 - Pubmed citation
- 2. Berger RA. The gross and histologic anatomy of the scapholunate interosseous ligament. J Hand Surg Am. 1996;21 (2): 170-8. doi:10.1016/S0363-5023(96)80096-7 - Pubmed citation
Related articles: Anatomy: Upper limb
-
skeleton of the upper limb
- clavicle
- scapula
- humerus
- radius
- ulna
- hand
- accessory ossicles of the upper limb
- accessory ossicles of the shoulder
- accessory ossicles of the elbow
-
accessory ossicles of the wrist (mnemonic)
- os centrale carpi
- os epilunate
- os epitriquetrum
- os styloideum
- os hamuli proprium
- lunula
- os triangulare
- trapezium secondarium
- os paratrapezium
- os radiostyloideum (persistent radial styloid)
- joints of the upper limb
-
pectoral girdle
-
shoulder joint
- articulations
- associated structures
- joint capsule
- bursae
- ligaments
- movements
- scapulothoracic joint
-
glenohumeral joint
- arm flexion
- arm extension
- arm abduction
- arm adduction
- arm internal rotation (medial rotation)
- arm external rotation (lateral rotation)
- circumduction
- arterial supply - scapular anastomosis
- ossification centers
-
shoulder joint
-
elbow joint
- proximal radioulnar joint
- ligaments
- associated structures
- movements
- alignment
- arterial supply - elbow anastomosis
- development
-
wrist joint
- articulations
-
ligaments
- intrinsic ligaments
- extrinsic ligaments
- radioscaphoid ligament
- dorsal intercarpal ligament
- dorsal radiotriquetral ligament
- dorsal radioulnar ligament
- volar radioulnar ligament
- radioscaphocapitate ligament
- long radiolunate ligament
- Vickers ligament
- short radiolunate ligament
- ulnolunate ligament
- ulnotriquetral ligament
- ulnocapitate ligament
- ulnar collateral ligament
- associated structures
- extensor retinaculum
- flexor retinaculum
- joint capsule
- movements
- alignment
- ossification centers
-
hand joints
- articulations
- carpometacarpal joint
-
metacarpophalangeal joints
- palmar ligament (plate)
- collateral ligament
-
interphalangeal joints
- palmar ligament (plate)
- collateral ligament
- movements
- ossification centers
- articulations
-
pectoral girdle
- spaces of the upper limb
- muscles of the upper limb
- shoulder girdle
- anterior compartment of the arm
- posterior compartment of the arm
-
anterior compartment of the forearm
- superficial
- intermediate
- deep
-
posterior compartment of the forearm (extensors)
- superficial
- deep
- muscles of the hand
-
accessory muscles
- elbow
- volar wrist midline
- palmaris longus profundus
- aberrant palmaris longus
- volar wrist radial-side
- accessory flexor digitorum superficialis indicis
- flexor indicis profundus
- flexor carpi radialis vel profundus
- accessory head of the flexor pollicis longus (Gantzer muscle, common)
- volar wrist ulnar-side
- dorsal wrist
- blood supply to the upper limb
-
arteries
- subclavian artery (mnemonic)
- axillary artery
- brachial artery (proximal portion)
- ulnar artery
- radial artery
- veins
-
arteries
- innervation of the upper limb
- intercostobrachial nerve
-
brachial plexus (mnemonic)
- branches from the roots
- branches from the trunks
- branches from the cords
- lateral cord
- posterior cord
- medial cord
- terminal branches
- lymphatic drainage of the upper limb
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