Lunotriquetral Ligament: Difference between revisions
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== Clinically Relevant Anatomy == | |||
The lunotriquetral joint is stabilized by the lunotriquetral ligament and has three components - dorsal, palmer and proximal membranous<ref name=":1">Beeker RW, Rehman UH (2022). [https://europepmc.org/article/NBK/nbk557729#free-full-text Carpal Ligament Instability].</ref>. | |||
* The lunotriquetral ligament unites the lunate and triquetrum of the carpals. | |||
* It originates from the volar side of the distal lunate and triangular fibrocartilage and attaches itself distally to the medial end of the hammate. | |||
* The lunotriquetral ligament unites the lunate and triquetrum of the carpals. | |||
* It originates from the volar side of the distal lunate and triangular fibrocartilage and attaches itself distally to the medial end of the hammate. | |||
* Similar to the scapholunate ligament, there are three sections: the volar ligament, the proximal ligament, and the dorsal ligament. | * Similar to the scapholunate ligament, there are three sections: the volar ligament, the proximal ligament, and the dorsal ligament. | ||
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* Some fibres are joined by the superficial fibres of the volar radiolunate ligament | * Some fibres are joined by the superficial fibres of the volar radiolunate ligament | ||
== Mechanism of Injury / Pathological Process | == Mechanism of Injury / Pathological Process == | ||
Isolated lunotriquetral injuries can occur when a person falls onto an outstretched arm while the wrist is in radial deviation and extension<ref name=":1" />.<br> | |||
== Clinical Presentation == | == Clinical Presentation == | ||
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The literature suggests that soft tissue reconstruction is an effective procedure for this group. | The literature suggests that soft tissue reconstruction is an effective procedure for this group. | ||
Arthrodesis of lunotriquetral joints is associated with a high nonunion rate (up to 57%), so the indications for surgery need to be very clear.<ref name=":0" /><br> | Arthrodesis of lunotriquetral joints is associated with a high nonunion rate (up to 57%), so the indications for surgery need to be very clear.<ref name=":0">https://pubmed.ncbi.nlm.nih.gov/26188693/</ref><br> | ||
== Differential Diagnosis<br> == | == Differential Diagnosis<br> == |
Revision as of 13:46, 20 December 2022
Clinically Relevant Anatomy[edit | edit source]
The lunotriquetral joint is stabilized by the lunotriquetral ligament and has three components - dorsal, palmer and proximal membranous[1].
- The lunotriquetral ligament unites the lunate and triquetrum of the carpals.
- It originates from the volar side of the distal lunate and triangular fibrocartilage and attaches itself distally to the medial end of the hammate.
- Similar to the scapholunate ligament, there are three sections: the volar ligament, the proximal ligament, and the dorsal ligament.
Dorsal component[edit | edit source]
- It is less flexible than the scapholunate ligament.
- It limits the amount of dorsiflexion between the lunate and triquetrum.
Volar component[edit | edit source]
- The ligament is important component contributing to carpal stability.
- It limits triquetral extension and is linear in shape.
- It runs parallel to the space between the lunate and triquetrum.
- Some fibres are joined by the volar ulnolunate ligament
Proximal component[edit | edit source]
- It is triangular in shape with the apex directed distally
- Some fibres are joined by the superficial fibres of the volar radiolunate ligament
Mechanism of Injury / Pathological Process[edit | edit source]
Isolated lunotriquetral injuries can occur when a person falls onto an outstretched arm while the wrist is in radial deviation and extension[1].
Clinical Presentation[edit | edit source]
add text here relating to the clinical presentation of the condition
Diagnostic Procedures[edit | edit source]
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Outcome Measures[edit | edit source]
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Management / Interventions
[edit | edit source]
Conservative treatments are generally considered to be the first-line treatment for mild lunotriquetrical instability.
Temporary arthroscopic pinning and / or wound resection is recommended as minimally invasive surgery.
Surgical interventions can be performed for more dissociative injuries.
The literature suggests that soft tissue reconstruction is an effective procedure for this group.
Arthrodesis of lunotriquetral joints is associated with a high nonunion rate (up to 57%), so the indications for surgery need to be very clear.[2]
Differential Diagnosis
[edit | edit source]
add text here relating to the differential diagnosis of this condition
Key Evidence[edit | edit source]
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Resources
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Case Studies[edit | edit source]
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References[edit | edit source]
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- ↑ 1.0 1.1 Beeker RW, Rehman UH (2022). Carpal Ligament Instability.
- ↑ https://pubmed.ncbi.nlm.nih.gov/26188693/