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Transcript 
Imaging Anatomy of Elbow
A 20 minutes Lecture
Kyung Jin Suh Dongguk University, Korea [email protected]
Elbow Stabilizer
Ulnohumeral
joint
Main
Ulnohumeral joint
Radiohumeral
joint
Anterior bundle of MCL
Lateral MCL
Common
Flex Tendon
Secondary
Radiohumeral joint
Ant bundle
of MCL
Common
Ext. Tendon
Secondary
Common flexor-pronator
Common extensor
Primary
Lat UCL
Stabilizer
Main
Ulnohumeral joint
Anterior bundle of MCL
Lateral UCL
Secondary
Radiohumeral joint
Common flexor-pronator
Common extensor
Ligaments
Medial collateral ligament
Anterior bundle
Posterior bundle
Transverse bundle
Distal Insertion of the Anterior Bundle
Proximal ins: Collateral ligament recess
Distal ins: Tightly attached to sublime tubercle
T- sign: Partial undersurface tear
of anterior bundle of MCL
Am J Sports Med 1994; 22:33–36
Distal Insertion of the Anterior Bundle
Radiology 2004;231:797-803
Lateral collateral ligament
Annular lig
Radial collateral lig
Lat ulnar collateral lig (LUCL)
Accessory lig (accessory LUCL)
Muscles
Four anatomic divisions
Anterior: Biceps brachii, Brachialis
Posterior: Triceps, Anconeus
Medial: Pronator teres, Flexors
Lateral: Supinator, BR, Extensors
A
L
M
P
Medial: Flexor-pronator muscle groups
Pronator teres (PT)
Flex Carpi Radialis (FCR)
Palmaris longus (PL)
Flex Digitorum Superficialis (FDS)
Flex Carpi Ulnaris (FCU)
PT
FCR PL FDS FCU
Medial: Flexor-pronator muscle groups
PT FCR PL FDSFCU
PT FCR PL FDSFCU
PT
PT FCR PL FDSFCU
PT
FCR-PL
FDS
FCU
PT FCR PL FDSFCU
PL
PT
FCR
PL
FDS
FCU
FDP
PT FCR PL FDSFCU
PT
FCR
PL
FDS
FCU
FDP
PT FCR PL FDSFCU
Lateral: BR-Extensor-Supinator
Brachioradialis (BR)
Ext Carpi Radialis Longus (ECRL)
BR
Ext Carpi Radialis Brevis (ECRB)
Ext Digitorum Communis (EDC)
Extensor digiti minimi (EDM)
Ext Carpi Ulnaris (ECU)
Supinator
Common
Extensor
Tendon
ECRLB EDC
ECU
Lateral: BR-Extensor-Supinator
BR ECRLB EDC
ECU
BR
ECRL
BR ECRLB EDC
ECU
BR
ECRL
BR ECRLB EDC
ECU
BR
ECRLB
EDC
ECU
BR ECRLB EDC
ECU
BR
ECRLB
EDC
ECU
BR ECRLB EDC
ECU
BR
ECRLB
EDC
ECU
BR ECRLB EDC
ECU
Supinator
Ulnar and humeral heads
Superficial and deep layers
Proximal edge of superficial layer:
Arcade of Frohse
Full supination
Posterolateral
Common extensor Radial nerve
Humeral insertion of supinator
Capsular insertion of supinator
Radial n and PIN
Capsular insertion of supinator
Radial n and PIN
Arcade of Frohse
Superficial layer of supinator
Superficial layer of supinator
Superficial layer of supinator
Anterior muscle groups
Brachialis
Biceps brachii
- bicipital aponeurosis
(lacertus fibrosus)
Flexed abducted supinated (FABS) position
AJR 2004;182:944-946
Bicipital aponeurosis
Bicipital aponeurosis
Bicipital aponeurosis
Bicipital aponeurosis
Posterior
Triceps
Long head
Lateral head
Medial head
Anconeus
Posterior
Triceps
Long head
Lateral head
Medial head
Anconeus
Medial head of Triceps
Medial head of Triceps and Anconeus
Anconeus
Nerves
MN
RN
RN
MN
PIN
UN
UN
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