The data related to the detectability of each of the ten specific areas are shown in table 1. The pectoralis major attaches to the lateral lip of the intertubercular sulcus. All of these areas are attachment points for muscles that act on the forearm, wrist. Prominent only in the lower region where it forms lateral supracondylar ridge. Oct 15, 2017 thethe intertubercular sulcus, also known as the intertubercular groove, or bicipital groove, is a groove separating the greater and lesser tubercles of the humerus. Fibrocartilage lines the intertubercular sulcus of the humerus and protects both the bone and the tendon of the long head of biceps brachii where the tendon passes through the sulcus.
The latissimus dorsi attaches to the floor of the intertubercular sulcus. The lesser tuberosity is located inferior to the head, on the anterior part of the humerus, its very prominent and palpable. In life, the transverse humeral ligament connects the two tubercles to bridge the groove and form a canal. Anterior ridge extends to lateral lip of intertubercular sulcus. The biceps brachii muscle biceps is a large, thick muscle of the upper arm consisting of two heads long head. Features of the humerus musculoskeletal, skeletal anatomyzone. Anatomically intertubercular or bicipital groove is located in the anteromedial surface of the humerus. The structure indicated is the intertubercular sulcus of the humerus the intertubercular sulcus, also known as the intertubercular groove, or bicipital groove, is a groove separating the greater and lesser tubercles of the humerus the tendon of the long head of the biceps muscle runs in this groove and attaches on the supraglenoid tubercle of the scapula. The pectoralis majors primary functions are flexion, adduction.
The lady between two majors teres major to medial lip of groove. The bicipital groove lodges the long tendon of the biceps brachii between the tendon of the pectoralis major on the lateral lip and the tendon of the teres major on the medial lip. What function does the intertubercular sulcus serve. The attachment of the pronator teres tendon was located between those of the medial intermuscular septum and the common flexor tendon at the superior aspect of the epicondyle, extending laterally to the epicondylar ridge and extending inferiorly to the summit of the anterosuperior tubercle but never reaching the intertubercular sulcus. Beneath the pectoralis major is the pectoralis minor, a thin, triangular muscle. The intertubercular sulcus bicipital groove extends longitudinally down the proximal shaft.
If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks. If you can imagine the upper part of the shaft of humerus is cylindrical and lower part is triangul. Intertubercular groove definition of intertubercular groove. The intertubercular sulcus is the site of three important muscle attachments. Tendon of the long head of biceps brachii leaves the joint cavity through the aperture provided by intertubercular sulcus. Additionally, the 9 cmlong biceps tendon travels between the lesser and greater tubercle in the intertubercular sulcus. Learn distal attachment shoulder with free interactive flashcards.
It begins between the two tubercles and houses the tendon of the long head of the biceps brachii muscle. Intermediateweighted fatsuppressed mr image oriented along the course of the long head of the biceps profiles the proximal attachment to the glenoid and labrum as well as showing the intra and extraarticular segments. Choose from 500 different sets of distal attachment shoulder flashcards on quizlet. M benjamin, j r ralphs, r l newell, and e j evans department of anatomy, university of wales college of cardiff, uk. The greater and lesser tubercles of humerus are separated from each other by a deep groove, the intertubercular groove bicipital groove, which lodges the long tendon of the biceps brachii and transmits a branch of the anterior humeral circumflex artery to the shoulderjoint. Oct 26, 2018 the muscles attachment of humerus are as follows.
Thats a little bit about the intertubercular sulcus. The long head of biceps brachii muscle runs along this groove. It lies within the intracapsular space but it still remains extrasynovial. The shoulder is structurally and functionally complex as it is one of the most freely moveable areas in the human body due to the articulation at the glenohumeral joint. As the tendon exits the sulcus, it makes a 3040 degree turn towards the supraglenoid tubercle elser et al, 2011. Loss of the fibrocartilaginous lining of the intertubercular. Middle part forms the anterior region of deltoid tuberosity. May 11, 2020 the biceps brachii muscle is one of the chief muscles of the arm. The transverse humeral ligament connects the lesser and greater tubercles. Anatomy, back, latissimus dorsi statpearls ncbi bookshelf.
The anterior border is a continuation of the lateral lip of the intertubercular sulcus or bicipital groove. Muscle attached on the intertubercular sulcus of the humerus. Both the greater and lesser tubercles serve as attachment sites for muscles that act. Lattisimus dorsi tendon of long head of biceps passes through this grrove crest of lesser tubercle. Intertubercular sulcus musculoskeletal, skeletal anatomyzone. The long biceps tendon makes a sharp turn at the humeral head and continues its course in the bicipital groove intertubercular.
The body of the humerus has three borders and three surfaces. The intertubercular sulcus or the bicipital groove lodges the tendon of the long head of biceps arising from the supraglenoid tubercle. The intertubercular groove or also known as the bicipital sulcus is a deep groove that begins between the two tubercles and extends longitudinally down the proximal shaft of the humerus. Even though the muscle has a broad attachment on the trunk and strong. Then place the sentences in order of muscle location from superior to inferior latissimus dorsi teres major deltoid supraspinatus subscapularis teres minor infraspinatus drag the text blocks below into their correct order. It connects the scapula and the two bones of the lower arm, the radius and ulna. The insertion point of the latissimus dorsi is therefore sandwiched between the insertion points of the teres major and the pectoralis major. Nov 02, 2019 intertubercular sulcus or bicipital groove between greater and lesser tubercle. Intertubercular sulcus an overview sciencedirect topics. This book is distributed under the terms of the creative commons.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. The bicipital groove intertubercular groove, sulcus intertubercularis is a deep groove on the humerus that separates the greater tubercle from the lesser tubercle. Bicipital intertubercular groove is located between the two tuberosities. Pdf 3d bicipital groove shape analysis and relationship to. Its origin and insertion act on both the shoulder joint and the elbow joint, which is why this muscle participates in the more than few movements of the arm. Anatomy questions and study guide quizlet flashcards by. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Intertubercular sulcus between the greater and lesser tubercles allows passage of tendon of the long head of the biceps brachii. Between the greater tubercle and the lesser tubercle is the bicipital groove intertubercular sulcus. Loss of the fibrocartilaginous lining of the intertubercular sulcus associated with rupture of the tendon of the long head of biceps brachii. Match of the attachments in the sentence with the appropriate muscle.
This article is within the scope of wikiproject anatomy, a collaborative effort to improve the coverage of anatomy on wikipedia. Detailed mrianatomic study of the lateral epicondyle of the. It contains the shoulder girdle, which connects the upper limb to the axial skeleton via the sternoclavicular joint. The subscapularis is inserted to the lesser tubercle. The inclination of the medial wall of the intertubercular sulcus medial wall angle ranges from 40 to 70 and low angles have been associated with increased incidence of biceps tendon instability. Pdf the bicipital groove of the proximal humerus is formed by the medial. Correlation between anatomical parameters of intertubercular.
Long bicipital tendon including superior labral anterior. Bicipital groove, sulcus intertubercularis intertubercular groove a furrow running down the shaft of the humerus between the two tubercles, lodging the tendon of the long head of the biceps, and giving attachment in its floor to the latissimus dorsi muscle. It has been found to be roundcordlike in the sulcus and wideflat in the intraarticular portion. It derives its name from its two heads which attach to the coracoid process and supraglenoid tubercle of the scapula. The high range of motion of the shoulder comes at the expense of decreased stability of the joint, and it is. Greater tubercle of right humerus all three of the muscles that attach to the greater tubercle are part of the rotator cuff, a muscle group that stabilizes the shoulder joint. Three muscles are inserted in the region of the intertubercular sulcus. The radial collateral ligament attached to the superior aspect of the intertubercular sulcus and inferior aspect of the superior tubercle and was indistinguishable from the attachment of the lateral ulnar collateral ligament. The pectoralis major from latin pectus, meaning breast is a thick, fanshaped muscle, situated at the chest of the human body. The latissimus dorsi attachment on the intertubercular sulcus extends farther. Anatomy, shoulder and upper limb, shoulder statpearls. Bicipital groove or intertubercular sulcus is bounded by lesser tubercle. The upper part of the greater tubercle receives the attachment of the supraspinatus. The teres major attaches to the medial lip of the intertubercular sulcus.
It provides a smooth, resilient, lubricated gliding surface on the bone. The bicipital groove is typically 46 mm deep 1 it contains the tendon of the long head of the biceps brachii muscle, which is ensheathed in a synovial reflection of the. Intertubercular sulcus definition of intertubercular sulcus. Anatomy and function of the tendon of the long head of the. Upper one third forms the lateral lip of the intertubercular sulcus. Lateral lip of intertubercular bicipital groove and crest of greater tubercle of humerus. Due to this muscles broad attachment on the spinous processes, ongoing.
Miscellaneous conditions of the shoulder radiology key. The bicipital groove intertubercular groove, sulcus intertubercularis is a deep groove on the humerus that separates the greater tubercle from the lesser. It makes up the bulk of the chest muscles and lies under the breast. How does one explain the muscle attachments of humerus. Forms the medial lip of the intertubercular sulcus.