BMS Anatomy Asynchronous Lecture 6: Muscles of the Rotator Cuff and Shoulder Joint PDF
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Uploaded by ARenee
CCNM
Dr. K. Lumsden, Dr. M. Doroudi
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Summary
This document is an asynchronous lecture on the muscles of the rotator cuff. The lecture covers the four muscles of the rotator cuff: supraspinatus, infraspinatus, teres minor, and subscapularis. It also examines their functions and locations.
Full Transcript
BMS Anatomy Asynchronous Lecture 6 Muscles of the Rotator Cuff and Shoulder Joint Presented By: (Toronto Campus) Moore's Clinically Oriented Anatomy, by Arthur F. Dalley II Ph.D. FAAA (Author), Anne M. R. Agur BSc (OT) MSc Ph.D. FAAA (Author), 9th ed. Dr. M. Doroudi; [email protected] Upper Limb Cha...
BMS Anatomy Asynchronous Lecture 6 Muscles of the Rotator Cuff and Shoulder Joint Presented By: (Toronto Campus) Moore's Clinically Oriented Anatomy, by Arthur F. Dalley II Ph.D. FAAA (Author), Anne M. R. Agur BSc (OT) MSc Ph.D. FAAA (Author), 9th ed. Dr. M. Doroudi; [email protected] Upper Limb Chapter; 178 – 182 Dr. K. Lumsden; [email protected] Boucher Campus) Link to the recorded lecture of this session (Boucher). https://ccnm.ca.panopto.com/Panopto/Pages/Viewer.aspx?id=a8e5da7 2-0bae-447a-9c68-af2b011e6472&instance=Moodle Link to the recorded lecture of this session (Toronto). https://ccnm.ca.panopto.com/Panopto/Pages/Viewer.aspx?id=434bae0 2-806c-4bf4-84a9-af2b011e7102&instance=Moodle Ø Deltoid: Ori: 1. Lateral clavicle (anterior fibers) 2. Acromion (lateral fibers) 3. Spine of scapula (posterior fibers) Ins: Deltoid tuberosity of humerus Fun: N: Axillary ØSubscapularis: Ori: Subscapular fossa Ins: Lesser tubercle of humerus Fun: N: Upper and lower subscapularis Ø Supraspinatus: Ori: Supraspinous fossa Ins: Greater tubercle of humerus Fun: N: Suprascapular Ø Infraspinatus: Ori: Infraspinous fossa Ins: Greater tubercle of humerus Fun: N: Suprascapular Ø Teres Minor: Ori: The superior lateral border of scapula Ins: Greater tubercle of humerus Fun: N: Axillary Ø Teres Major; Ori: The inferior lateral border of scapula Ins: Medial lip of intertubercular (bicipital) sulcus (groove) of humerus Fun: N: Upper & lower subscapular Rotator Cuff Muscles Includes 4 Muscles: Supraspinatus Infraspinatus Teres Minor Subscapularis § They strengthen the shoulder joint capsule all around except inferiorly. This explains why dislocations of the humerus occur most commonly in a downward direction. Axillary Spaces Ø Axillary N. Ø Posterior femoral circumflex A. Circumflex scapular A. Ø Radial N. Ø Profunda brachii A.
