Carpal Tunnel Syndrome

Musculoskeletal System


Clinicals - History

Fact Explanation
{"ops":[{"insert":"Pain and paresthesia"},{"insert":"\n"}]}
{"ops":[{"insert":"This is most commonly felt in the palmar surface of the thumb, index, and middle fingers, plus the radial aspect of the ring finger; however, the whole hand can be affected.\n\nRarely, the pain can radiate to the elbow or even the shoulder. Note that paresthesias occurring proximal to the wrist are suggestive of an alternate diagnosis.\n\nThe underlying cause is compression of the median nerve as it passes through the narrowed carpal tunnel."}]}
{"ops":[{"insert":"Flick sign"},{"insert":"\n"}]}
{"ops":[{"insert":"Pain and paresthesias improve after shaking out hands. This is highly sensitive and specific (93% and 96%, respectively) for carpal tunnel syndrome (CTS)."}]}
{"ops":[{"insert":"Loss of motor function"},{"insert":"\n"}]}
{"ops":[{"insert":"Adduction and opposition of the thumb can be affected, leading to difficulty in grasping objects firmly, or in performing tasks requiring fine motor control (e.g., picking up a needle or buttoning a shirt).\n\nThis is because injury to the median nerve to leads to weakness and clumsiness of the hand."}]}
{"ops":[{"insert":"Workplace exposure"},{"insert":"\n"}]}
{"ops":[{"insert":"Workplace exposure to activities requiring prolonged wrist flexion or extension, overuse of flexor muscles, or exposure to vibration is a risk factor for CTS.\n\nThis type of exposure can be seen in manual workers employed in construction, logging, manufacturing, or certain service industries; and in artisans."}]}
{"ops":[{"insert":"Extrinsic and intrinsic risk factors"},{"insert":"\n"}]}
{"ops":[{"insert":"Extrinsic risk factors include obesity, hypothyroidism, pregnancy, menopause, renal failure, oral contraceptive use, and congestive heart failure. These conditions affect the body\u0027s fluid regulation, and can increase the fluid volume within the carpal tunnel.\n\nIntrinsic risk factors refer to tumors and similar pathologies that increase the pressure on the median nerve, by taking up space within the carpal tunnel."}]}
{"ops":[{"insert":"Pain and paresthesia"},{"insert":"\n"}]}
{"ops":[{"insert":"This is most commonly felt in the palmar surface of the thumb, index, and middle fingers, plus the radial aspect of the ring finger; however, the whole hand can be affected.\n\nRarely, the pain can radiate to the elbow or even the shoulder. Note that paresthesias occurring proximal to the wrist are suggestive of an alternate diagnosis.\n\nThe underlying cause is compression of the median nerve as it passes through the narrowed carpal tunnel."}]}
{"ops":[{"insert":"Flick sign"},{"insert":"\n"}]}
{"ops":[{"insert":"Pain and paresthesias improve after shaking out hands. This is highly sensitive and specific (93% and 96%, respectively) for carpal tunnel syndrome (CTS)."}]}
{"ops":[{"insert":"Loss of motor function"},{"insert":"\n"}]}
{"ops":[{"insert":"Adduction and opposition of the thumb can be affected, leading to difficulty in grasping objects firmly, or in performing tasks requiring fine motor control (e.g., picking up a needle or buttoning a shirt).\n\nThis is because injury to the median nerve to leads to weakness and clumsiness of the hand."}]}
{"ops":[{"insert":"Workplace exposure"},{"insert":"\n"}]}
{"ops":[{"insert":"Workplace exposure to activities requiring prolonged wrist flexion or extension, overuse of flexor muscles, or exposure to vibration is a risk factor for CTS.\n\nThis type of exposure can be seen in manual workers employed in construction, logging, manufacturing, or certain service industries; and in artisans."}]}
{"ops":[{"insert":"Extrinsic and intrinsic risk factors"},{"insert":"\n"}]}
{"ops":[{"insert":"Extrinsic risk factors include obesity, hypothyroidism, pregnancy, menopause, renal failure, oral contraceptive use, and congestive heart failure. These conditions affect the body\u0027s fluid regulation, and can increase the fluid volume within the carpal tunnel.\n\nIntrinsic risk factors refer to tumors and similar pathologies that increase the pressure on the median nerve, by taking up space within the carpal tunnel."}]}

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