ASSIGNMENT #6: . Grasping expectations & illustrations
Power Grasp
Hook Grasp
Spherical Grasp
Cylindrical Grasp
The power grasp is used to control tools or instruments when strength from the hand is required to perform activities. This play sword and tennis racquet are both held with my ulnar fingers flexed and radial fingers slightly flexed. My thumb is in extension and adduction. The object is stabilized in the ulnar side of the hand and controlled with radial side of my hand. This grasp will best prepare me to win my sword fight or tennis match against my friends. (Case-Smith & O’Brien, 2015)
The hook grasp is used to hold or carry objects such as a purse or the handles of grocery bags. Here I was carrying a water bottle and a bag using the hook grasp. My fingers are flexed at both my interphalangeal joints and metacarpophalangeal joints and my transverse metacarpal arch is flat (Case-Smith & O’Brien, 2015).
The spherical grasp is used to hold small ball. Here my wrist is extended, fingers are abducted and there is slight flexion at the metacarpophalangeal joints and interphalangeal joints in order to firmly grasp the ball before throwing it (Case-Smith & O’Brien, 2015).
Disk Grasp
Lateral Pinch
The cylindrical grasp is used to hold a cup or can of soup with your hand around the object. My transverse arch is flattened in order to allow the fingers to hold against the cup. My fingers are slightly abducted and there is slight interphalangeal and metacarpophalangeal joint flexion in order to best grip this particular cup. Since this cup is empty and it does not weigh much, I do not need to apply addition palmar surface to the cup (Case-Smith & O’Brien, 2015).
The disk grasp is used to hold a disk such as a jar lid of a jelly container. Here, my fingers are holding the lid with the extension of the metacarpophalangeal joints and flexion of the interphalangeal joints. My wrist is flexed and the thumb is slightly extended due to the size of the lid (Case-Smith & O’Brien, 2015).
The lateral pinch is used to exert power on or with a small object. For example, in order to press the key into the key hole, my index finger is slightly flexed and the thumb is flexed and adducted. My pad of my thumb is placed against the radial side of the index finger near the distal interphalangeal joint (Case-Smith & O’Brien, 2015).
Pincer Pinch
Three-jaw chuck/ Tripod Grasp
Tip Pinch
The pincer grasp is used to hold tiny objects with just the index finger and the thumb. My thumb is opposed to the index finger pad and the object is supported within the finger pads with the ulnar fingers flexed (Case-Smith & O’Brien, 2015).
The tripod grasp is used to hold and manipulate a writing utensil or eating utensil. When holding the crayon, my thumb is simultaneously opposed to the index and middle finger pads. This provides stability for better accuracy of the crayon.
The three-jaw chuck can also be used to hold a writing utensil or to take off the lid of a honey jar (Case-Smith & O’Brien, 2015).
The tip pinch grasp is used to secure and hold tiny objects such as small beads. This grasp is done with my thumb tip meeting the top of my index finger while forming a circle. Most of my joints in the index finger and thumb are slightly flexed (Case-Smith & O’Brien, 2015).