Lunotriquetral ligament
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At the time the article was created Craig Hacking had no recorded disclosures.
View Craig Hacking's current disclosuresAt the time the article was last revised Arlene Campos had no financial relationships to ineligible companies to disclose.
View Arlene Campos's current disclosures- Lunotriquetral ligaments
The lunotriquetral ligament joins the lunate and triquetrum of the carpals.
Gross anatomy
The lunotriquetral ligament arises from the volar aspect of the distal lunate and triangular fibrocartilage to distally attach to the medial margin of the hamate. Similar to the scapholunate ligament, it has three portions – volar, proximal and dorsal bands.
Dorsal component
less flexible than the scapholunate ligament
limits the amount of dorsiflexion between the lunate and triquetrum
Volar component
important component contributing to carpal stability
limits triquetral extension
thickest portion (2-2.5 mm) 3
linear in shape
runs parallel to the space between the lunate and triquetrum
some fibers are joined by the volar ulnolunate ligament
Proximal component
triangular in shape with the apex directed distally
some fibers are joined by the superficial fibers of the volar radiolunate ligament
Related pathology
complete tears of the volar band of the lunotriquetral ligament leads to volar intercalated segmental instability (VISI) 3,4
calcification of the lunotriquetral ligament forms part of the spectrum of CPPD disease
References
- 1. Susan Standring. Gray's Anatomy. (2015) ISBN: 9780702052309 - Google Books
- 2. Bateni C, Bartolotta R, Richardson M, Mulcahy H, Allan C. 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
- 3. Ritt M, Bishop A, Berger R, Linscheid R, Berglund L, An K. Lunotriquetral Ligament Properties: A Comparison of Three Anatomic Subregions. J Hand Surg Am. 1998;23(3):425-31. doi:10.1016/s0363-5023(05)80460-5
- 4. van de Grift T & Ritt M. Management of Lunotriquetral Instability: A Review of the Literature. J Hand Surg Eur Vol. 2016;41(1):72-85. doi:10.1177/1753193415595167 - Pubmed
Incoming Links
- Wrist
- Volar intercalated segment instability
- Calcium pyrophosphate dihydrate deposition disease
- Lunate
- Palmer classification of TFCC abnormalities
- Mayfield classification of carpal instability (perilunate instability)
- Triangular fibrocartilage complex injury
- Wrist ligaments
- MRI of the wrist (an approach)
- Ulnar impaction syndrome
- Long radiolunate ligament
- Extensor carpi ulnaris tendinopathy
- Triquetrum
- Perilunate dislocation
- Ulnocapitate ligament
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