Biomechanics of Contacts

-

Every morning I put my contacts on my eyes. To begin I reach out in front of me to grasp my container case. My upper extremities are functioning in the sagittal plane about the coronal axis. My arm is slightly flexed and my hands are in the supine position as I hold the container. With one hand I maintain the grasp I have on the container. With the other hand I scoop my contact out of the container with my second phalange. The wrist participates in pronation/supination in the horizontal plane about the vertical axis. The osteokinematics of the motion is pronation to supination with flexion of the arm at the elbow as the phalange moves towards the eye. This is an open kinematic chain because the distal portion of the chain is moving. The arthrokinematics of this movement occurs when the ulna (moving segment that is convex) rolls anteriorly and glides posteriorly on the stable humerus. The prime movers for the elbow flexion is the brachialis muscle. This muscle performs a concentric contraction.

Comments

Post a Comment

Popular posts from this blog

Man from the South

-
In "Man from the South," we see a young and fearless solider being persuaded into a bet that could leave him little-fingerless. Even though the narrator and his new lady friend discourage him from playing into the bet he believes that he will beat the old man and win his Cadillac. The narrator built up the moment where the solider would either lose his finger or win and then the old man's wife barged in to stop him. She explained how her husband had collected many fingers and lost several cars with this same bet. The solider obviously did not recognize the power of his little finger. Assuming he lost the bet he would be losing about half of the strength of his left hand. Operating a firearm without a little finger would be hard for the solider. He could aim, pull and squeeze with his right hand but he needs the full strength of his left hand to support and stabilize the weapon. He might be able to use a prop to stabilize the weapon but this might not be the case for a...
Read more

Imposter Phenomenon

-
 Imposter phenomenon/syndrome is something that can affect any new employees. It can make you feel unprepared, inadequate, and out of place in a new and competitive environment. The article, "Facing Imposter Syndrome as a New Grad," is very helpful in guiding new grads to assess and confront the characteristics of someone struggling with this issue. I scored less than 30 on the Clance IP Scale meaning I show very few characteristics of Imposter Syndrome. I feel that the questions asked in this assessment were very indicative of the external locus of control that I discussed in my previous blog. I personally relate to a more internal locus of control in that I don't believe I am lucky or successful by chance. I believe that hard work, dedication and passion promote success.  Overall these materials were helpful in identifying negative thought patterns and feelings associated with imposter syndrome. With this knowledge I will be more prepared to confront imposter syndrome h...
Read more

Mobility Skills

-
The order for restoring confidence in mobility skills based on increasing activity demands is a concept that therapists can use to determine where to start with a client who has decreased mobility. The base of the hierarchy is bed mobility, then mat transfers, wheelchair transfers, ADL bed transfer, functional ambulation for ADL, toilet and tub transfer, car transfer, functional ambulation for community mobility, and lastly community mobility and driving. The order of the sequence allows for the completion of one skill to be followed by a more difficult skill. As OT's we want to promote independence. This hierarchy sets the client up to achieve several goals on the road to recovery.  I like this approach because it can be useful for any level of mobility skill. If a client's baseline is ADL bed transfer we assume that bed mobility, mat and wheelchair transfers (if needed) have already been accomplished. I did most of my observation hours in a pediatric outpatient clinic wher...
Read more