Weakness was due to loss of function of the adductor pollicis because of ulnar nerve injury, peripheral neuropathy, local muscle avulsion, partial amputation, or aplasia. In addition, you might want to watch our anatomy and physiology lectures on YouTube, or check our anatomy and physiology notes.Eighteen patients with disability due to weak pinch were treated with extensor carpi radialis brevis (ECRB) adductor-plasty.
#THUMB ABDUCTION FREE#
Take a free abduction and adduction quiz to test your knowledge, or review our quick abduction vs adduction video. Just like with the hand, devation of the 2nd toe away from the body’s midline is called lateral abduction, whereas movement toward the midline is called medial abduction. Toe adduction adds them right back together. When the toes move away from the midline of the foot, toe abduction occurs. During adduction of the thigh, you ADD the lower limb right back toward the body’s midline. So radial deviation is movement on the radial side, whereas ulnar deviation occurs on the opposite side.ĭuring thigh abduction (also called hip abduction or leg abduction), the lower limb moves away from the body’s midline. Remember, the radius is on the thumb side, which where you check the radial pulse. These movements are also referred to as radial deviation and ulnar deviation. Adduction of the wrist has it going in the opposite direction, toward the body’s midline. Abduction of the wrist has it moving away from the body’s midline, in the same direction as arm abduction. When determining abduction and adduction of the wrist, I find that it helps to stand in the anatomical position. Wrist Abduction and Adduction (Ulnar Deviation & Radial Deviation) Adduction of the thumb has it added back to the hand. Abduction of the thumb has it moving within the sagittal plane, in an anterior motion. The thumb (pollex) is different from the fingers. When it deviates toward the body, it’s called medial abduction. When the middle finger (3rd digit), which serves as the midline reference of the hand, deviates to the away from the body, it’s called lateral abduction.
During arm adduction (or shoulder adduction), you ADD them right back toward the midline.įinger abduction occurs when the fingers move away from the midline reference of the hand, whereas finger adduction occurs when you add them back toward the hand’s midline reference. Arm Abduction and Adductionĭuring arm abduction (also called shoulder abduction), the arms move away from the body’s midline. Let’s take a look at examples of abduction and adduction on the body. What is Adduction?Īdduction (think: ADDuction) occurs as the structure is ADDED back toward its midline reference point. The structure is being moved away from its midline reference point.
That’s exactly what’s going on with this movement. What does “abduct” mean? When you hear on the news that a man was abducted, you know it means that someone took him away. However, the thumb is a notable exception to this rule, as it moves within the sagittal plane during abduction and adduction when in the anatomical position.Ībduction (think: ABDUCTion) is the movement of a structure away from its midline reference point. Unlike flexion and extension movements, which mostly take place within the sagittal plane, you’ll notice that abduction and adduction motions mostly take place within the frontal, or coronal, plane.
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