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Ligament of elbow
MRI of the elbow (T1 weighted) showing an unimpaired radial collateral ligament and extensor tendon.
The
radial collateral ligament
(
RCL
),
lateral collateral ligament
(
LCL
), or
external lateral ligament
[Explain 1]
is a
ligament
in the
elbow
on the side of the
radius
.
Structure
[
edit
]
The composition of the triangular ligamentous structure on the lateral side of the elbow varies widely between individuals
[1]
and can be considered either a single ligament,
[2]
in which case multiple distal attachments are generally mentioned and the
annular ligament
is described separately, or as several separate ligaments,
[1]
in which case parts of those ligaments are often described as indistinguishable from each other.
In the latter case, the ligaments are collectively referred to as the lateral collateral ligament complex (LCLC), consisting of four ligaments:
[1]
- the radial collateral ligament [proper] (RCL), from the
lateral epicondyle
to the annular ligament deep to the
common extensor tendon
[1]
- the lateral ulnar collateral ligament (LUCL), from the lateral epicondyle
[3]
to the
supinator crest
on the ulna. Near the attachment on the humerus this ligament is normally indistinguishable from the RCL and can be considered the posterior portion of it.
[1]
Martin 1958
described the distal part of the LUCL as "a definite bundle which normally crosses the annular band and gains attachment to the supinator crest, frequently to a special tubercle on that crest" but didn't name it.
[4]
- the annular ligament (AL), from the posterior to the anterior margins of
radial notch
on the ulna, encircles the
head of radius
and holds it against the radial notch of ulna.
[5]
- the accessory lateral collateral ligament (ALCL), from the inferior margin of the annular ligament to the supinator crest.
Clinical significance
[
edit
]
The radial collateral ligament may be involved in
lateral epicondylitis
.
[6]
Additional images
[
edit
]
Explanations
[
edit
]
References
[
edit
]
- ^
a
b
c
d
e
Carrino et al. 2001
, Discussion, see also
Figure 4
- ^
Palastanga & Soames 2012
, Radial collateral ligament, p.133
- ^
"The Elbow Joint"
.
TeachMeAnatomy
. 2012-03-20
. Retrieved
2017-07-24
.
- ^
de Haan et al. 2011
, Results
- ^
"Radio-Ulnar Joints"
.
Earth's Lab
. Retrieved
2017-11-18
.
- ^
Jacobson, Jon A.; Chiavaras, Mary M.; Lawton, Jason Michael; Downie, Brian; Yablon, Corrie M.; Lawton, Jeffrey (2014).
"Radial Collateral Ligament of the Elbow"
.
Journal of Ultrasound in Medicine
.
33
(6): 1041?1048.
doi
:
10.7863/ultra.33.6.1041
.
hdl
:
2027.42/135312
.
ISSN
1550-9613
.
Bibliography
[
edit
]
- Carrino JA, Morrison WB, Zou KH, Steffen RT, Snearly WN, Murray PM (January 2001).
"Lateral Ulnar Collateral Ligament of the Elbow: Optimization of Evaluation with Two-dimensional MR Imaging"
.
Radiology
.
218
(1): 118?25.
doi
:
10.1148/radiology.218.1.r01ja52118
.
PMID
11152789
.
- de Haan J, Schep NW, Eygendaal D, Kleinrensink GJ, Tuinebreijer WE, den Hartog D (2011).
"Stability of the Elbow Joint: Relevant Anatomy and Clinical Implications of In Vitro Biomechanical Studies"
.
The Open Orthopaedics Journal
.
5
: 168?76.
doi
:
10.2174/1874325001105010168
.
PMC
3104563
.
PMID
21633722
.
- Martin, BF (July 1958).
"The annular ligament of the superior radio-ulnar joint"
.
J. Anat
.
92
(Pt3): 473?82.
PMC
1245018
.
PMID
13563324
.
- Palastanga, Nigel; Soames, Roger (2012).
Anatomy and Human Movement: Structure and Function
(6th ed.). Elsevier.
ISBN
9780702040535
.