UE: Osteology Flashcards
What is a Greenstick Fracture?
An incomplete fracture of the clavical that usually occurs in Children
What is the most common bone to be fractured due to direct and indirect injuries from falling?
Clavical
The supraglenoid tubercle of the scapula is superior to the glenoid cavity and is the attachment point for what muscle? /
Long head of biceps brachii
The infraglenoid tubercle is inferior to the glenoid cavity of the scapula and is the attachment point for what muscle?
Long Head of the Triceps Brachii
What bony landmark comes off the scapular spine and acts as the attachment point of the shoulder with an articular surface for the clavical?
What landmark is the attachment point for the Deltoid Muscle off the scapular spine?
Acrominon
Deltoid Tubercle
The posterior surface of the scapula is bony and ________, while the costal anterior surface is smooth and ______.
The posterior surface of the scapula is bony and Convex, while the costal anterior surface is smooth and Concave.
Which “neck” of the humerus is the common fracture site?
Which “neck” of the humerus is between the humeral head and humeral tubercles?
Surgical Neck
Anatomical Neck
The Greater Humeral Tubercle is on the lateral border of the humerus, and is the attachment point for what 3 muscles of the rotator cuff?
Supraspinatus M.
Infraspinatus M.
Teres Minor M.
NOTE: due to the attachment of these muscles, the Glenoid Humeral Tubercle is susceptible to avulsion
The Lesser Humeral Tubercle projects anteriorly and is the attachment point for what muscle?
Subscapularis M.
The Intertubercular Groove is located between the greater and lesser humeral tubercles and transmits the long head of what muscle?
The attachment site for what 3 muscles?
Long Head of Biceps Brachii
Pectoralis Major M, Teres Major M. Latissimus Dorsi M.
What bony landmark on the humerus is a common site of origin for Antebrachial Extensors?
Antebrachial Flexors?
Lateral Epicondyle
Medial Epicondyle
The Medial Humeral Epicondyle contains a groove for what nerve, that when struck is not “humerus”, and quite painful
Ulnar N.
Severe Abduction of the extended elbow can result in avulsion of what bony landmark on the humerus?
Medial Humeral Epicondyle
The Trochlea of the humerus articulates with the Trochlear Notch on the proximal portion of what long bone?
The Trochlea is found on what anatomical side of the humerus?
Ulna B.
Medial
The Capitulum of the humerus articulates with the concave head of what long bone?
Radius
When the antebrachium is flexed, the ___________ of the humerus accomadates the radial head, and the ___________ accomodates the coronoid process of the ulna.
When the antebrachium is flexed, the Radial Fossa of the humerus accomadates the radial head, and the Coronoid Fossa accomodates the coronoid process of the ulna.
Fracturing the elbow is common in falls due to the triceps brachii M. causing an avulsion fracture to what bone specifically?
Olecranon of the Ulna
What is the most commonly fractured carpal bone, that is often misdiagnosed as a severe sprain because it is not often visible on a radiograph?
Scaphoid
NOTE: This is the largest bone in the proximal row and exists in the floor of the Anatomical Snuff Box
What is the largest carpal bone?
Capitate
Going laterally to medially, what are the carpals in the “first most proximal row” closest to ulna and radius?
What are the carpals in the “second distal row closest to metacarpals”?
First Row: Scaphoid, Lunate, Triquetrum, Pisiform
(Some Lunatics Try Piss)
Second Row: Trapezium, Trapezoid, Capitate, Hamate
(Time To Cut Him)
Carpal bones posterior to the Flexor retinaculum is known as the Carpal tunnel, which transmits tendons of what 3 flexor Ms. , and what nerve?
Flexor Digitorum Profundus M.
Flexor Digitorum Superficialis M.
Flexor Carpi Radialis M.
Median N.
Remember: Carpal Tunnel has Profound, Super, Radiating Tendons
What carpal bones contribute to Guyon’s Tunnel?
What nerve is transmitted through there?
Pisiform and Hamate
Ulnar N.
Boxer’s Fracture occurs when an individual punches something with a closed fist, and fractures what bone?
Head of the 5th Metacarpal
All of your fingers, possess a middle phalange except what finger/phalanx?
1st Phalanx/pollux/Thumb
Because of the intricate relationship between _________ and ________ tendons, bone fragments must be realigned carefully to maintain function.
Because of the intricate relationship between Phalanges and Flexor tendons, bone fragments must be realigned carefully to maintain function.
What structure most commonly tears in individuals repeartedly throwing a ball, usually in response to a sudden contraction of Biceps Brachii M.?
The tear mainly occurs in what portion of the structure?
Glenoid Labrum
Anterosuperior portion of the Glenoid Labrum
T/F: The Sternoclavicular Joint, Acromioclavicular Joint, and Articular Disc of the Distal Radial Joint, are all fibrocartilaginous discs
True
Which of the following is a fibrocartilagenous ring that surrounds and deepens the glenoid cavity?
A. Sternoclavicular Joint
B. Acromioclavicular Joint
C. Glenoid Labrum
D. Articular Disc of the Distal Radioulnar Joint
Glenoid Labrum
Which of the following extends between the medial edge of the Ulnar Notch of the Radius and Styloid Process of the Ulna?
What’s another name?
A. Sternoclavicular Joint
B. Acromioclavicular Joint
C. Glenoid Labrum
D. Articular Disc of the Distal Radioulnar Joint
Articular Disc of the Distal Radioulnar Joint
Triangular L.
