Kinesiology 4585 Lecture Notes - Lecture 8: Popliteus Muscle, Knee Pain, Palpation

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silverprairie-dog97

19 Mar 2018

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Knee assessment: observation looking at musculature, scars, fluid/swelling (intra-articular, extra articular) Looking to see if there is fluid in the knee and if it is intra or extra-articular. If fluid moves, it is inside the capsule. Wipe down the outside of the knee then wipe the inside of the knee. Alternate one side to the other multiple times. Note: can also test for temperature as well: arom, prom, rrom mainly flexion and extension. Push down on their leg and don"t let them move it. ** can also check adductors and abductors during this as these muscles cross the knee: palpation can be done either before or after special tests. Clinically they usually palpate first, do special tests, then go back and palpate it again. Gives you an idea of where the pain is and can rule out some other special tests.

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Part I. Stretch reflexes. First do muscle stretch reflexes which are also called deep tendon reflexes. It is important the subject relax the muscle being tested. Tell the subject to let the muscle go limp. Rate each response according to the following scale: +4 very brisk, hyperactive, large movement at joint. +3 brisker than average, medium movement at joint +2 average, small movement at joint +1 somewhat diminished, very small or no movement at joint 0 no response A. Patellar (also called the knee jerk reflex) â activation of femoral nerve. The receptor is located in the quadriceps muscle, the effector is the quadriceps muscle. The nerve ending is responding to the stretch of the muscle caused by striking the tendon. 1. A subject is allowed to sit comfortably on a table with knees dangling over the edge. 2. Using a reflex hammer (or substitute as described above) strike the patellar tendon just below the kneecap. 3. Observe the action caused by the reflex. 4. Record your results using the graded scale above. B. Biceps Reflex â activation of the musculocutaneous nerve 1. Rest subjectâs left forearm along your left forearm. 2. Subjectâs hand should rest in or near the bend of your elbow. 3. Press your left thumb on the subjectâs biceps tendon, apply a little pressure. 4. Strike your thumb with the reflex hammer, this will transfer the pressure to the biceps tendon. 5. Watch carefully for twitching of the biceps muscle. Usually, the forearm will not move. 6. Record your results using the graded scale above. C. Triceps reflex â activation of the radial nerve. This is a difficult reflex to observe, but give it a try. 1. The subject should have the arm relaxed and elbow bent. 2. Support the entire weight of the arm with your left hand. 3. Strike the triceps tendons, just above the elbow. 4. Watch carefully for twitching of the biceps muscle. 5. Record your results using the graded scale above. Both B and C show up best on someone who doesnât have a lot of subcutaneous fat and who has good muscle definition. D. Achilles reflex (also called ankle-jerk reflex) â activation of the poplitealnerve. The principle is similar to the knee-jerk reflex. Here the stretch receptors are located in the gastrocnemius muscle. 1. Have the subject take her/his shoes and socks off, exposing the Achilles tendon on the back of the ankle. 2. Strike the Achilles with the reflex hammer (or substitute) and observe the extension of the foot downward. 3. Record the results using the graded scale above. Part II. Cutaneous reflexes A. Plantar reflex This reflex differs from the four muscle stretch reflexes. In this reflex, receptors are stimulated in the sole of the foot (cutaneous receptors). The reflex pathway travels up the leg to the integrating center. While in the integrating center, the reflex travels up the spinal cord through the pyramidal tracts, which are nerve pathways between the spinal cord and brain. 1. The subject needs to lie on his or her back, with shoes and socks off. 2. Using the end of the handle of the reflex hammer, trace a path along the lateral side from heel to the little toe to the big toe. 3. Observe for the flexion (toe curling) which is recorded as a normal plantar reflex. 4. If the toes curl, this is called a Negative Babinski response and is normal. If the toes flare, then an abnormal response is recorded and is called a Positive Babinski response and indicates CNS damage. 5. Record the results. B. Ciliospinal reflex â This reflexive pathway is from the skin to the thoracic spinal cord, through the sympathetic trunk, then to the dilator pupillae muscle of the eye. This is another test of the CNS. 1. Pinch the back of the subjectâs neck, 2. Watch pupils for a response. 3. A normal response is dilation of the pupil. 4. Record your results.

Kinesiology 4585 Lecture Notes - Lecture 8: Popliteus Muscle, Knee Pain, Palpation

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