Elbow Flashcards
What joint of the humerus aligns with the head of the radius
Capitulum
What part of the humers aligns with the ulna
Trochlea
How man humeral fossae name them
2 Fossae
How many recesses (jct btwn 2 bones
4 Recesses. Key point-2 bones equal one joing and 1 joint equals 1 recess or joint space
Image of humeral fossae
fat pads not displayed
Image of olecranon fossa LAX
Note humeral troch
Reivew of the 4 elbow recess
a jct bwtween 2 bones
Image lateral and annular recess
radio capitellar joing
Image of medial recess 3
Humero ulnar joint anterior
image of posterior recess
humer ulnar joint posterior
Name the 4 muscles orginating from the common extensor tendon Lateral compatment
ECRB ED EDM ECU
Image of Extnsor digiti minimi
Its relationship with ED
True or False Does the anconeous orginat on the common extensor tendon
FALSE
What lies deep to the commone extensor tendon
The Radial collateral ligament RCL. Common extensor tendon takes up 60% and the other 40% is RCL at the lateal epicondyle
Name the common flexor tendons
FCU FDS FCR
True or False the pronator tere orginates from the common flexor tendon
False orignates just proximal to the common flexor or medial epicondyle
Anterior band of the UCL has a normal gap of and an abnormal gap of what with valgus stress
normal is less 2mm and abnormal is greater than 2mm
What are muscles that do not orginate at the common extensor or flexor bu provide moement of the elbow
Biceps brachii flex Brachialis flexor of forearm Brachioradialis flexes forearm Supinator supinate forearm Triceps brachii extensor of forearm
Image lateral approach to the distal biceps tendon
must supinate hand
Image injection set up for lateral approach
probe in plane and short axis
Image of distal bicep dorsal approach
Hand in pronation
What are the nerves at the anterior elbow
radial posterior interosseous median and ulnar
Image of anterior pyramid
radial n lateralbrachial n medial
Location of split from the radial nerve where does the cutaneous sensor and posterior interosseous go
The PIN splits laterally and cutaneous sensor splits medially
Image of the PIN
Note bony landmark
Image of PIN and compression at radial head what is this called
Radial tunnel syndrome and anterior forearm pain
Image of the Ulnar Nerve What is the gap you must do
Probe position in SAX on the Olecranon process and Medial epicondlyle Sometime you do not see the starry night of the ulnar nerve secondary to the medial triceps the reslin is the retinaculum
Ulnar nerve subluxation over
medial epicondyle but also in sever cases the medial tricep can also sublux
What is cubital tunnel syndrome
Ulnar ner entrapment 3 cm distal from the ulnar grove as the never passes under the roof of the cubital tunnel. The roof is a membrane called Osbornes fascia or osbornes ligament
Image of mechanism of ulnar nerve entrapment or compression
remember osbornes fascia ligament with flexion
Eval nerve proximal to ulnar grove
Look for stenotic dilation of ulnar nerve
What is the Struthers ligament?
located 8 cm proximal to ulnar grove and can cause ulnar nerve entrapment
Where is the bicipito radial bursa and how large is it
distal bicep tendon and radial tuberosity 2.4 to 3.9 cm
Image of bicipito radial bursa
a serous bursa
Why a biciptal complete tear may not retract from the radial tuberosity
Bicipital aponeurosis aka lacertus fibrosus
Image of a subcutaneous Olecranon bursa
Not visible with normal bursa
What are 5 causes of bursitis at the elbow
Trauma infection gout ra oa
What does the word enthesis mean
insertion of tendons and tendon attachments
Image of tendon footprint
Unirom linear anechoic footprint
What does enthesitis mean
insertional pathology and infammation at insertion.
What is the difference between enthesophyte and osteophyte
growing into the bone
What is the greek word for Psoriasis
Itch look for enthesophytes
Image of common extensor tear
distinct fiber interruption
The UCL is referred to what is on the exam Joint space opening of what is a partial thickness tear and greater than what is a full thickness tear
medial collateral ligament
What is the insertion of the UCL
Sublime tubercle of Ulna
What are the lanmarks for the triceps tendon
Humeral trochhlea and distal ulnar olecranon
Image of fx to coronoid process
CP on the ulna
Image erosion at the annular head of the radius
Idnetify erosions
Image of erosions at capitellum
both are humeral landmarks
Image of fluid at recess
annular and coronoid recess or fossa
Image of olecranon recess
check for fluid
What is cat scratch fever
evaluate joint recesses for synovial hypertrophy enlargement of lymph nodes cause I 5 types of infection
What is RA nodules at the elbow
firm under skin and close to joints affected by RA
Loose bodies in the elbow joint what are they
cartilage or cartilage and bone resulting from any process that leads to disruption of the articular surface
Images of loose bodies in elbow joint
Presence of loose bodies in elbow joint
Image of loose bodies in the medial and lateral recess
Humer Ulnar joint and radio capitellar joint
What is Panners Disease
Osteochondrosis of the capitellum
Tophaceous deposits at the elbow mimic what
Olecranon bursal effusion with observation
Image of double contour sign
Not along the cartilage interface
Image of Lymph Nodes and Lipoma What is one difference
Wee defined border
Image of a Schwannoma
Often hypoechoic with posterior acoustic enhancement
