This document is designed to summarise all the information you need on the arm. The colours and design help in making studying more fun while also implementing memorisation with the layout.
Medial and lateral epicondyles, give attachment
Bones
to muscles and ligaments. Laterally rounded
- Humerus - shaft and lower (distal) end capitulum, for articulation with head of radius.
- Radius and ulna (proximal ends Medially pulley-shaped trochlea for articulation with
trochlear notch of ulna.
Joints
Radial fossa lies above capitulum, it receives the
- Elbow joint head of radius when the elbow is flexed
Muscles and fasciae Coronoid fossa, above the trochlea, anteriorly, it
Blood vessels receives the coronoid process of ulna when elbow is
flexed
- Arteries
- Veins Olecranon fossa above the trochlea, posteriorly, it
receives the olecranon process of ulna when the
Nerves elbow is extended.
About halfway down the shaft, on the anterolateral
surface of the humerus is a roughened elevation,
called the deltoid tuberosity for insertion of the Radius is lateral bone of forearm
deltoid muscle. Behind and below tuberosity is the
Upper end articulates with:
spiral groove for the radial nerve and arteria profunda
brachii - Humerus at elbow joint
- Ulna at proximal radioulnar joint
Head
- Upper end is concave to articulate with
convex capitulum of humerus
- Circumference of head articulates medially
with radial notch of ulna
Neck
The following muscles - Bicipital/radial
attach to the humerus along its shaft: tuberosity on medial
side for biceps
Anteriorly – coracobrachialis, deltoid, brachialis,
brachioradialis
Posteriorly – medial and lateral heads of the triceps
(spiral groove separates their respective origins)
, In response to minor injury, or
sometimes for no obvious reason at
Olecranon process = prominence of elbow. all, this point of insertion becomes
inflamed.
Notch on anterior surface = trochlear (semilunar)
notch; articulates with trochlea of humerus.
Coronoid process, below trochlear notch
Radial notch on lateral surface for articulation with
Brachial fascia (deep fascia of the arm)
head of radius
- Continuous above with fascia covering
deltoid & pectoralis major
- On each side gives off a strong intermuscular
septum, attached to corresponding
supracondylar ridges & epicondyles of
humerus
- This divides arm into anterior & posterior
R = radial fossa for head of radius, when elbow flexed. fascial compartments
C = coronoid fossa for coronoid process of ulna when Anterior compartment
elbow flexed. I am so bored of my life I want to die an
O = olecranon fossa for olecranon process of ulna in 1. Bicep brachii
full extension 2. Brachialis
3. Coracobrachialis
Posterior compartment
4. Triceps
At elbow, brachial fascia attaches to epicondyles of
humerus & olecranon of ulna & is continuous with the
antebrachial fascia (deep fascia of the forearm)
Lateral cord of brachial plexus (C5 - C7) –
musculocutaneous nerve
Posterior cord of BP (C5 – T1) - Radial nerve
Can be caused by partial tearing or degeneration of
the origin of the superficial extensor muscles from
lateral epicondyle. Pain radiating down lateral side of main
forearm. Common in tennis players, violinists and flexor
housewives at the
elbow
joint
Similar to tennis elbow but affecting origin of flexor
muscles on medial epicondyle. The anterior forearm
contains several muscles that are involved with flexing
fingers and thumb and with flexing and pronating the
wrist. The tendons of these muscle come together in a
common tendinous sheath, which originates from the
medial epicondyle of the humerus at the elbow joint.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller mayaazz. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.32. You're not tied to anything after your purchase.
