UPPER LIMB MUSCLES OF ARM, CUBITAL FOSSA, AND ELBOW JOINT Dr.Nivin Sharaf MD M.B.BCH.
-
Upload
arthur-shapley -
Category
Documents
-
view
230 -
download
0
Transcript of UPPER LIMB MUSCLES OF ARM, CUBITAL FOSSA, AND ELBOW JOINT Dr.Nivin Sharaf MD M.B.BCH.
UPPER LIMBMUSCLES OF ARM, CUBITAL FOSSA,
AND ELBOW JOINT
Dr.Nivin Sharaf MD M.B.BCH
Objectives-Identify the following structures: humerus (medial & lateral epicondyles, lateral condyle (capitulum), medial condyle (trochlea), radius (head, styloid process, tuborosity), ulna (olecranon, coronoid process, styloid process) -Describe the movements of flexion and extension of the elbow joint. -Describe the articulation of the elbow joint with the radius and ulna. -Explain where you would aspirate a joint effusion. -Describe the course of neurovascular structures in the arm (brachial artery and vein, nerves - medial, ulnar and radial), and their relation in the cubital fossa-Name and identify the anatomical region of the cubital fossa (location, boundaries)
SurfaceAnatomy
Surface anatomy
• .
Bony Skeleton
Humerus and Scapula (Ant)
Humerus and Scapula (Post)
Supra scapularFossa
Infra scapularFossa
InferiorAngle
Humeral Head
Humeral NeckAnatomical
Humeral NeckSurgical
Radial groove
Medial epicondyle
Humerus and Scapula (Post)
Supra scapularFossa
Infra scapularFossa
InferiorAngle
Humeral Head
Humeral NeckAnatomical
Humeral NeckSurgical
Radial groove
Medial epicondyle
Elbow joint
http://www.joint-pain-expert.net/images/elbow_joint_anatomy001.jpg
Ligaments of Elbow
ELBOW= hinge jt.Humerus:-medial & lateral epicondyles,-lateral condyle (capitulum), -medial condyle (trochlea)-coronoid fossa -olecranon fossa
Radius:-head, -tuborosity (biceps insertion)
Ulna:-olecranon, -coronoid process- tuborosity (brachialis insertion)
Fibrous capsule of the elbow joint. -Strong collateral ligaments on each side.- Annular ligament encircles radial head
Triceps tendon
Cubital tunnel syndrome
Muscles
Anterior arm
Mainly Flexors BBCBrachialisBicepsCoraco brachialis
Nerve Supply!
Musculo Cutaneous Nerve
Posterior arm
Arm muscles
http://www.highfive.me.uk/Resources/Anatomy/UpperArm/All.JPG
Cubital Fossa
Surface Anatomy
Roof of cubital fossa. -superficial veins: Median Cubital v. Cephalic v. Basilic v.
Cubital fossa.– anterior to the elbow Boundaries:- Epicondyles * (medial & lateral)- Pronator Teres- Brachioradialis
Contents: - Brachial a (radial / ulnar aa)- Biceps tendon & aponeurosis- Median n
Floor of cubital fossa.- Brachialis m- Supinator m- Radial nerve: deep branch (muscular, articular) superficial branch (cutaneous)
Cubital Fossa
Identify the borders of the cubital fossa: Brachioradialis m. laterally, Pronator teres medially and Brachialis which forms the floor of the fossa.
Cubital Fossa
Contents
Lateral to medial, the Bicipital tendon, the Brachial artery, and the Median nerve. The Brachial veins may be removed. You should look for the branching of the Brachial a. into Radial and Ulnar aa. and the Superficial branch of the Radial nerve running underside Brachioradialis muscle
Course of nerves in anterior and posterior arm.
Brachial Plexus
Randy Travis Drinks Cold Tea
Axilallry N and Radial N
Radial Nerve
Axillary nerve
Posterior View
Axillary nerve suppliesDeltoid muscleTeres MinorSkin over deltoid
Radial NerveSupplies all the extensors+Brachio Radialis
Median Nerve
• Supplies all the flexors of the arm except
• Flexor Carpi Radialis (Radial N)
• Flexor Carpi Ulnaris (Ulnar N)
• Medial ½ of FDP
Radial Nerve
Brachial Plexus
Links
• http://www.bing.com/images/search?q=posterior+forarm&form=QBIR&qs=n#focal=703fca7fd9d811d3076749b41e801de4&furl=http%3A%2F%2Fwww.anatomyfacts.com%2FMuscle%2FMuscleBone_files%2Fimage019.gif
• http://www.med.umich.edu/lrc/coursepages/M1/anatomy/html/musculoskeletal_system/forearm_questions.html
• www.getbodysmart.com• http://www.becomehealthynow.com/body/muscles/atlas/anconeus.shtml
References
• Google images• Netter Anatomy Atlas• University of Washington website• Bing Images• Yahoo Images• http://www.med.umich.edu/lrc/coursepages/M1/anatomy/html/images/wrist_ant.jpg• http://www.med.umich.edu/lrc/coursepages/M1/anatomy/html/musculoskeletal_system/forearm_que
stions.html• http://iris3.med.tufts.edu/dentgross/labguide/SupHand2R.jpg• http://www.dasd.k12.pa.us/57592111818543/lib/57592111818543/Muscles_of_the_Posterior_Trunk,_
Shoulder_and_Arm_Numbered.jpg• http://www.yamli.com/#t=image&q=axillary%20nerve&s=120&safe=1&isz=all&sm=ltr
• 1. Deltoid: scapula/clavicle to humerus- abducts arm• 2. Levator scapulae: C-vertebrae to scapula- elevates scapula• 3. Infraspinatus: lower scapular spine to humeral head- lateral rotation of humerus• 4. Teres major: scapula to anterior humerus- medial rotation of humerus'• 5. Teres Minor: scapula to posterior humerus- lateral rotaion of humerus• 6. Supraspinatus: upper scapular spine to humeral head- abducts humerus• 7. Trapeziues: Vertebrae/Occipital to scapula/clavicle- abduct arm, rotate, abduct scapula• 8. Rhomboidius: T-vertebrae to scapula- raise/adduct scapula• 9. Latissimus Dorsi: T-, L-, S- vertebrae to humerus- extend/adduct arm• 10. Biceps: scapula to radius- flex elbow• 11. Triceps: scapula/humerus to ulna- extend elbow• 12. Pronator: Medial humerus to radius- medial rotation of forearm (pronation)• 13. Flexor carpi radialis: medial humerus to 2nd/3rd metacarpal- flex/abduct hand• 14. Flexor Digitorum: medial humerus/ulna to phalanges- flex fingers• 15. Extensor carpi ulnaris: lateral humerus to 5th metacarpal- extend/adduct hand • 16. Extensor digitorum: lateral humerus to phalanges- extend fingers• 17. Extensor carpi radialis: lateral humerus to 2nd/3rd metacarpal- extend/adduct hand