Anatomy PathologiesUpper extremity Flashcards
Dislocated epiphysis of femoral head that occurs in children 10-17 years old can result in what change to the angle of inclination?
Angle of inclination reduces to about 90 degrees, this is called coxa vara
Radiology to confirm dx
Which arteries can cause bleeding and femoral head necrosis
Injury to the retinacular arteries
Bone graft using the fibula utilizes what area of the fibula?
middle third where the nutrient foramen is
what tarsal most likely to fracture?
5th
Varicose Veins, Thrombosis, Thromboplebitis all cause due to a failure of valves in the perforating vines that are tributaries from the ———— vein.
great saphenous vein
winged scapula
can’t comb hair
long thoracic injury
serratus anterior not working
What nerve can be injured during surgery in the shoulder/axilla that leads to the pt not being able to do pull ups or climb or use crutches?
Thoracodorsal Nerve that innverates the lats
injury to the dorsal scapular nerve would affect the
Levator SCapulae
Loss of sensation on the lateral side of the proximal arm skin could be caused by a shoulder joint dislocation, humeral surgical neck fracture, intramuscular injection of medication. You should definitely test what muscle function?
Deltoid
Triangular and quadrangular space formed by the teres major and long head of the triceps. what exits the triangular space and what exits the quadrangular space?
Traingular space contains: circumflex scapular artery
Quadrangular Space:
- Posterior circumflex humeral artery
- Axillary Nerve
How would you test for a rotator cuff injury?
ask patient to lower arms (Adduct from 90degrees)
Why is the supraspinatus the most injured rotator cuff muscle?
It is limited by the acromion and so gets torn and inflamed
Pain during abduction (50degrees to 130 degrees) is referred to as
Painful arc syndrome
Painful arc syndrome is a result of
Subacromia bursitis and calcification
What bursa is affected in Painful arc syndrome?
The bursa that sits between the tendon of the supraspinatus and the acromion, coracoacromial ligament, and deltoid.
If the axillary vein were blocked, what collateral venous route could be affected?
Thoracoepigastric Vein
What Axillary lymph node is the first to be enlarged usually as result from infection or cancer of the shoulder and thoracic region
The Humeral Group
The cephalic vein is obstructed by a lymph node. Which one most likely?
Apical axillary lymph node
A surgeon completes an axillary lymph node dissection. Which two muscles are at risk because of the nerves that run through the axilla?
The serratus anterior (Long thoracic)
the Latissimus dorsi (Thoracodorsal nerve)
The Dorsal scapular nerve is injured. You are no longer able to
elevate the scapula because the levator scapulae and rhomboids are innervated by the dorsal scapular nerve
A swimmer hypertrophies the middle and posterior scalene muscles and all of a sudden isn’t able to comb her hair because
The serratus anterior is innervated by the long thoracic nerve which
rotates inferior angle of the scapula (punching/reaching forward)
-holds scapula against thoracic wall
The axillary nerve has been damaged when an elderly woman FOOSHd. Even though the arm is stable, what part of the humerus is likely affected?
Surgical neck. Pt probably lost sensation to lateral aspect of the upper arm. can’t abduct past 15 degrees
You can’t feel the skin on the lateral side of dorsum of the hand and the lateal 3 and a half fingers. What nerve is likely affected?
Superficial branch of the Radial nerve
You can’t extend your wrist
(deep branch of the) Radial nerve issue
The proximal posterior aspect of your arm is compressed after sleeping on a table all night. What could this result in
Saturday Night Palsy
What area of the humerus would put the radial nerve and deep arm vessels at risk if fractured?
The Radial groove (mid humeral fracture)
The distal end of the humerus if fractured could result in injury that would affect a patient’s ability to
abduct the thumb, flex the first 2 fingers. Because this would affect the median nerve that crosses lateral to the median epicondyle
The medial epicondyle is fractured. The patient can’t flex his 5th and part of his 4th fingers. What nerve injury is responsible for this?
ulnar
Shoulder dystocia or falling on the head and neck can cause injury to what cervical level leading to Erb’s Palsy
C5, C6 (Erb’s Palsy)
What muscles are paralyzed in Erb’s palsy?
Deltoid, Biceps, Brachialis, brachioradialis
this leads to waiters tip
Klumpke’s palsy is injury to what part of the brachial plexus?
The inferior part: C8, T1 possibly from sudden pull of the arm like grabbing a tree branch of grabbing arm during delivery of baby
In Backpacker’s palsy, microinjuries to the superior trunk of the brachial plexus can lead to sensory deficits in the distribution of the what 2 nerves
Musculocutaneous and Radial nerve
A man paints his ceiling and experiences pain running down his arm numbness and tingling. What aspect of the brachial plexus is affected?
superior part
You want to operate on someone’s upper limb without using general anesthesis. What plexus would you try to anesthetize and where would you inject?
anesthetize the angle between the posterior border of the sternocleidomastoid and the clavicle. It has to go into the axillary sheath containing the cords not into the vessels.
a pt presents with crepitus in the shoulder, she is a softball pitcher and also plays racquetball. The shoulder is tender and has similar pain levels with active and passive movement. What is the insertion, innervation and origin of the presenting tendinitis of this muscle
She has biceps tendinitis which affects the long head of the biceps originates at the supraglenoid tubercle of the scapula and inserts on the radial tuberosity and bicipital aponeurosis. The tendon is in a synovial sheath that travels through the intertubercular groove and can sustain microtrauma from repeated actions like throwing
Dislocation of the long head of the biceps is associated with what other injury 70% of the time
Rotator cuff injuries
If the tendon of the long of the biceps ruptures, where does the detached muscle belly go?
It’s pulled distally— popeye deformity
A kid is playing football and is hit and his arm is fucked up. What’s ikely ∂islocated?
the proximal humeral epiphysis