Scapular Adduction – Also called scapular extension or retraction. It is a movement the opposite of abduction. Throwing the shoulder back and pinching the shoulder blades together illsutrates adduction of the shoulder girdles.
What causes adduction of the scapula?
Adduction is accomplished primarily by the pectoralis major, latissimus dorsi, teres major, triceps, and coracobrachialis. The deltoid and the supraspinatus, a muscle that runs along the scapula in the back, are the two main abductors of the shoulder.
What muscles are used to adduct the scapula?
Retraction of the scapula is sometimes called adduction of the scapula. The scapula is moved posteriorly and medially along the chest wall. Muscles: rhomboideus major, minor, and trapezius are the prime movers.
What causes abduction of the scapula?
The trapezius and serratus anterior muscles work in tandem to coordinate rotation and movement of the scapula to accommodate the full range of motion of the arm. Specifically, they facilitate abduction of the arm from 90 degrees and further upwards.What does the scapula do during shoulder abduction?
The scapula on the thorax contributes to elevation (flexion and abduction) of the humerus by upwardly rotating the glenoid fossa 50° to 60° from its resting position.
What is protraction of the scapula?
Scapular protraction describes the forward movement of the scapula about the thoracic wall (scapulothoracic joint). As the scapula moves away from the midline it can also be referred to as scapular abduction. This motion usually occurs in conjunction with some scapular lateral rotation.
What is an example of adduction?
Adduction is the movement of a body part toward the body’s midline. So, if a person has their arms straight out at the shoulders and brings them down to their sides, it is adduction. … Closing arms to the chest or bringing knees together are other examples of adduction.
Which muscles do shoulder abduction?
The primary muscles involved in the action of arm abduction include the supraspinatus, deltoid, trapezius, and serratus anterior.What is shoulder abduction and adduction?
Shoulder abduction is a movement of the arm away from the body and should not be confused with shoulder adduction, which involves movement toward the center of the body.
What is abduction of the shoulder?Shoulder abduction When you raise your arm out from the sides of your body, it’s an abduction of your shoulder. A normal range for abduction, starting with your palms at your sides, is around 150 degrees in a healthy shoulder.
Article first time published onWhich of the following correctly describes adduction?
Which of the following best describes adduction? moving a body part toward the median plane. Which of the following best describes flexion? bending a body part, or decreasing as bending a body part, or decreasing the angle between two bones.
What muscle depresses and Protracts scapula?
MuscleOriginActionTrapeziusOccipital Bone Ligamentum Nuchae & Spinous Process of Thoracic VertebraeElevates, Retracts & Depresses, Rotates the Scapula Upward & Extends the NeckSubclavius1st RibDepresses & Protracts the ShoulderSubscapularisSubscapular Fossa of the ScapulaMedial Rotation of the Shoulder
What parts of the scapula can be palpated?
The spine of the scapula (B) can be palpated all the way to the medial border of the scapula. The spine of the scapula can be best palpated if you strum it perpendicularly by moving your palpating fingers up and down across it as you work your way posteriorly and then medially.
What is horizontal adduction?
horizontal adduction (horizontal flexion) Movement of the arm or thigh in the transverse plane from a lateral position to an anterior position. … General Links for this Work.
What is the main function of the scapula?
The scapula is an important bone in the function of the shoulder joint. It engages in 6 types of motion, which allow for full-functional upper extremity movement including protraction, retraction, elevation, depression, upward rotation, and downward rotation.
What is protraction and retraction?
Protraction and retraction are opposites. During protraction, the scapulae move away from the spine as you round the upper back (thoracic spine). … In retraction, the scapulae move towards the spine and towards each other. Retracting is done by squeezing the shoulder blades together.
What adduction means?
Adduction: Movement of a limb toward the midline of the body. The opposite of adduction is abduction.
What does abduction mean in medical terms?
Abduction: The movement of a limb away from the midline of the body. The opposite of abduction is adduction.
What two characteristics describe adduction?
Two characteristics describe adduction. A movement towards the midline of the body. A movement along the frontal plane. How much movement is found in a diarthrosis?
What is an example of protraction?
Examples of protraction include: With the shoulder in 90o of abduction, brings the arms forward as if to hug someone. The scapulae begin to slide laterally and then anteriorly along the thorax, this is protraction.
Where does abduction and adduction occur?
Abduction and adduction motions occur within the coronal plane and involve medial-lateral motions of the limbs, fingers, toes, or thumb. Abduction moves the limb laterally away from the midline of the body, while adduction is the opposing movement that brings the limb toward the body or across the midline.
What is Triangle auscultation?
The triangle of auscultation is a relative thinning of the musculature of the back, situated along the medial border of the scapula which allows for improved listening to the lungs.
How do you remember abduction or adduction?
The easiest way to remember the difference is that an adduction movement ‘adds’ something to the body by bringing it closer. Abduction means ‘kidnapping’, as in taking something further away from the midline.
What is the difference between adduction and horizontal adduction?
How does “horizontal adduction” differ from just “adduction”? “Horizontal Adduction” is adduction (bone moving closer to midline) in the horizontal plane. … “Adduction” is a bone moving closer to the midline in the frontal plane.
What is abduction muscle?
Abductor muscle: Any muscle used to pull a body part away from the midline of the body. For example, the abductor muscles of the legs spread the legs away from the midline and away from one another.
Is shoulder adduction concentric or eccentric?
When you abduct your shoulders with webbed gloves, your medial deltoids contract concentrically. But then your latissimus fires eccentrically to slow the movement and change directions to a shoulder adduction.
How do you do shoulder abduction?
Shoulder abduction: Stand and hold a weight in your hand with your palm facing your body. Slowly raise your arm to the side with your thumb pointing up. Then raise your arm over your head as far as you can without pain. Hold this position for as long as directed.
Why is it important to know about abduction and adduction?
It’s important to be more intentional about including abduction and adduction exercises into your regular workout routine. These exercises can help protect your joints and lower body from injury, and can also help prevent falls.
What is shoulder horizontal abduction?
Reach forward to place your hands directly in front of you at shoulder height. … Keep your palms down. Reach out to the sides of your body with both hands at the same time. Hold for a count of three to five seconds and repeat 10 times.
Why is dorsiflexion called?
Dorsiflexion and plantar flexion refer to extension or flexion of the foot at the ankle. These terms refer to flexion in direction of the “back” of the foot, which is the upper surface of the foot when standing, and flexion in direction of the sole of the foot.
Which of the following movements is an example of abduction?
Spreading the fingers or toes apart is also abduction, while bringing the fingers or toes together is adduction. For the thumb, abduction is the anterior movement that brings the thumb to a 90° perpendicular position, pointing straight out from the palm.
