Biceps Brachii: Difference between revisions
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Origin of Short Head: Apex of the coracoid process of[[Image:Amand.jpg|right|400x500px]] the scapula.<br> | Origin of Short Head: Apex of the coracoid process of[[Image:Amand.jpg|right|400x500px]] the scapula.<br> | ||
<div>Origin of Long Head: Supraglenoid tubercle of the scapula.<ref name="Florence P.muscles testing and function with posture and pain.1993" | <div>Origin of Long Head: Supraglenoid tubercle of the scapula.<ref name="Florence P.muscles testing and function with posture and pain.1993"/><br></div> | ||
=== Insertion<br> === | === Insertion<br> === | ||
Tuberosity of the radius and aponeurosis of the biceps brachii (lacertus fibrosus).<ref name="Florence P.muscles testing and function with posture and pain.1993" | Tuberosity of the radius and aponeurosis of the biceps brachii (lacertus fibrosus).<ref name="Florence P.muscles testing and function with posture and pain.1993"/><br> | ||
=== Nerve<br> === | === Nerve<br> === | ||
Musculocutaneous C5, 6.<ref name="Florence P.muscles testing and function with posture and pain.1993" | Musculocutaneous C5, 6.<ref name="Florence P.muscles testing and function with posture and pain.1993"/><br> | ||
=== Artery<br> === | === Artery<br> === | ||
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== Function == | == Function == | ||
Flexes the shoulder joint. The short head assists with shoulder adduction. The long head may assist with abduction if the humerus is laterally rotated. With the origin fixed, flexes the elbow joint, moving the forearm toward the humerus and supinates the forearm. With the insertion fixed, flexes the elbow joint, moving the humerus toward the forearm, as in pull-up or chinning<br>exercises.<ref name="Florence P.muscles testing and function with posture and pain.1993" | Flexes the shoulder joint. The short head assists with shoulder adduction. The long head may assist with abduction if the humerus is laterally rotated. With the origin fixed, flexes the elbow joint, moving the forearm toward the humerus and supinates the forearm. With the insertion fixed, flexes the elbow joint, moving the humerus toward the forearm, as in pull-up or chinning<br>exercises.<ref name="Florence P.muscles testing and function with posture and pain.1993"/><br> | ||
== Assessment == | == Assessment == | ||
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=== Muscle test === | === Muscle test === | ||
Patient: Supine or sitting.<br>Fixation: The examiner places one hand under the elbow to cushion it from table pressure.<br>Test: Elbow flexion slightly less than or at a right angle, with the forearm in supination.<br>Pressure: Against the lower forearm, in the direction of extension.<ref name="Florence P.muscles testing and function with posture and pain.1993" | Patient: Supine or sitting.<br>Fixation: The examiner places one hand under the elbow to cushion it from table pressure.<br>Test: Elbow flexion slightly less than or at a right angle, with the forearm in supination.<br>Pressure: Against the lower forearm, in the direction of extension.<ref name="Florence P.muscles testing and function with posture and pain.1993"/> | ||
=== <br>palpation === | === <br>palpation === | ||
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=== Weakness === | === Weakness === | ||
<br> Decreases the ability to flex the forearm<br>against gravity. Interferes markedly with daily activities such as feeding oneself or combing the hair.<ref name="Florence P.muscles testing and function with posture and pain.1993" | <br> Decreases the ability to flex the forearm<br>against gravity. Interferes markedly with daily activities such as feeding oneself or combing the hair.<ref name="Florence P.muscles testing and function with posture and pain.1993"/> | ||
=== shortness === | === shortness === | ||
Revision as of 15:31, 6 June 2017
Original Editor - Esraa Mohamed Abdullzaher
Top Contributors - Esraa Mohamed Abdullzaher, Lucinda hampton, Kim Jackson, Joao Costa, Sai Kripa, Hing Long Yip, 127.0.0.1, Admin, George Prudden, WikiSysop and Wendy Snyders
Description[edit | edit source]
commonly known as the biceps, is a two-headed muscle that lies on the upper arm between the shoulder and the elbow.[1]
Origin[edit | edit source]
Origin of Short Head: Apex of the coracoid process of
the scapula.
Insertion
[edit | edit source]
Tuberosity of the radius and aponeurosis of the biceps brachii (lacertus fibrosus).[2]
Nerve
[edit | edit source]
Musculocutaneous C5, 6.[2]
Artery
[edit | edit source]
Muscular branches of brachial artery[3]
Function[edit | edit source]
Flexes the shoulder joint. The short head assists with shoulder adduction. The long head may assist with abduction if the humerus is laterally rotated. With the origin fixed, flexes the elbow joint, moving the forearm toward the humerus and supinates the forearm. With the insertion fixed, flexes the elbow joint, moving the humerus toward the forearm, as in pull-up or chinning
exercises.[2]
Assessment[edit | edit source]
Muscle test[edit | edit source]
Patient: Supine or sitting.
Fixation: The examiner places one hand under the elbow to cushion it from table pressure.
Test: Elbow flexion slightly less than or at a right angle, with the forearm in supination.
Pressure: Against the lower forearm, in the direction of extension.[2]
palpation[edit | edit source]
length test[edit | edit source]
pathology[edit | edit source]
Weakness[edit | edit source]
Decreases the ability to flex the forearm
against gravity. Interferes markedly with daily activities such as feeding oneself or combing the hair.[2]
shortness[edit | edit source]
Flexion deformity of the elbow if combined with brachialis muscle shortness.[2]
Treatment[edit | edit source]
strenghening
[6][edit | edit source]
stretching[edit | edit source]
Resources[edit | edit source]
See also[edit | edit source]
Recent Related Research (from Pubmed)[edit | edit source]
References[edit | edit source]
- ↑ Florence P.muscles testing and function with posture and pain.1993
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Florence P.muscles testing and function with posture and pain.1993
- ↑ https://rad.washington.edu/muscle-atlas/biceps-brachii/
- ↑ https://www.youtube.com/watch?v=EIeTYmD4aes
- ↑ https://www.youtube.com/watch?v=SSepwDda21Y
- ↑ https://www.youtube.com/watch?v=Id8FkHucAN0
- ↑ https://www.youtube.com/watch?v=TuS_ZnOkg3k
