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Carpal Tunnel Syndrome      Nabilah Ayob      060 100 814
Carpal Tunnel       • The carpal tunnel is         formed between the         carpal bones of the         wrist and the tr...
Carpal Tunnel Syndrome• Carpal tunnel syndrome (CTS) is a  collection of symptoms and signs  that occurs following entrapm...
Pathophysiology[2]The tendons of the hands are wrapped with a lining thatproduce a synovium fluid which lubricates the ten...
Epidemiology• Race  – Whites at highest risk of developing CTS.  – Very rare in some racial groups (eg, nonwhite    South ...
Causes• CTS is associated with many different factors  – Demographic : Increasing age, Female sex, Dominant    hand, Race ...
Work RelatedRepetitive Task                       ProfessionGrabbing & tugging cloth              Tailor, sewerHandling ob...
Non-Work RelatedArthritisDiabetesThyroid gland imbalanceGoutBroken or dislocated bones of the wristHormonal changes associ...
Signs and Symptoms                                              Aching in the  Tingling in the      Numbness in the       ...
Diagnosis• CTS is a clinical  diagnosis [2]• Sensory examination  – Abnormalities in sensory    modalities may be    prese...
Diagnosis• Motor examination  – Wasting and weakness    of the median-    innervated hand muscles    (LOAF muscles) may be...
Special Test• No good clinical test exists  to support the diagnosis of  CTS.   – Hoffmann-Tinel sign      • Gentle tappin...
Special Test     – The carpal compression test[6]          • This test involves applying firm            pressure directly...
ElectroDiagnostic        • Electrodes are placed on          the forearm and a mild          electrical current is passed ...
Management                     (Non Surgical)• Physical Therapy• Given CTS is associated with low  aerobic fitness and inc...
• Occupational Therapy• A physical therapist will observe and evaluate the  dynamics and ergonomics or the working environ...
• Splint• Wrist splints are recommended for use either at night,  or both day and night although they get in the way  when...
Medication• Short (1-2 wk) courses of regular NSAIDs can be of benefit,  particularly if there is any suggestion of inflam...
Management                  Surgical• Patients whose condition does not improve  following conservative treatment and pati...
Open Carpal Tunnel Release• The surgeon makes a 2-5  inch incision in the lower  palm and wrist area. [8]• The carpal liga...
Endoscopic Carpal Tunnel Release• A tiny, ½-inch incision is made on  the palm side of the wrist.• A fiber optic camera is...
Complication• Carpal tunnel syndrome may continue to  increase median nerve damage, leading to  permanent impairment and d...
Prognosis• Carpal tunnel syndrome appears to be progressive over  time and can lead to permanent median nerve damage.• Whe...
References1. Moore K. L. & Dalley A.F , 2006, Lippincott Williams   and Wilkins Clinically oriented anatomy, Chapter 6   U...
5. Bland,J. (2007) Carpal tunnel syndrome. BMJ   August 20076. Rodner, C,M. and Katarincic, J. (2006) Open   carpal tunnel...
Carpal tunnel syndrome
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Carpal tunnel syndrome

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Power point presentation by me a med student on Carpal tunnel syndrome =)

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Carpal tunnel syndrome

  1. 1. Carpal Tunnel Syndrome Nabilah Ayob 060 100 814
  2. 2. Carpal Tunnel • The carpal tunnel is formed between the carpal bones of the wrist and the transverse carpal ligament. • The ligament is an unyielding thick fibrous tissue which does not allow for changes in volume within the carpal tunnel. [1]
  3. 3. Carpal Tunnel Syndrome• Carpal tunnel syndrome (CTS) is a collection of symptoms and signs that occurs following entrapment of the median nerve within the carpal tunnel. [2]• Usual symptoms include numbness, paresthesias, and pain in the median nerve distribution.• These symptoms may or may not be accompanied by objective changes in sensation and strength of median-innervated structures in the hand. [2]
  4. 4. Pathophysiology[2]The tendons of the hands are wrapped with a lining thatproduce a synovium fluid which lubricates the tendons With repetitive movement of the hand, the lubrication system may malfunction This reduction in lubrication results in inflammation and swelling of the tendon area Abnormally high carpal tunnel pressures exist in patients with CTS. This pressure causes obstruction to venous outflow, back pressure, edema formation, and ultimately, ischemia in the nerve.
  5. 5. Epidemiology• Race – Whites at highest risk of developing CTS. – Very rare in some racial groups (eg, nonwhite South Africans)[2]• Sex – Female-to-male ratio is 3-10:1 [2]• Age – The peak age range for development of CTS is 45- 60 years. Only 10% of patients with CTS are younger than 31 years [2]
  6. 6. Causes• CTS is associated with many different factors – Demographic : Increasing age, Female sex, Dominant hand, Race (white) [3] – Genetic : Square wrist, Thickened transverse ligament, Short stature – Medical Condition : Diabetes, Thyroid disease, Hereditary neuropathy, Arthritis [3] – Occupation : Due to repetitive movement – Injury or trauma – Pregnancy• Most cases have no known cause
  7. 7. Work RelatedRepetitive Task ProfessionGrabbing & tugging cloth Tailor, sewerHandling objects on conveyor belt Assembly-line workerHand weeding GardenerUsing spray gun PainterKnitting HomemakerTurning keys LocksmithTyping Clerical workerUsing scanner at checkout counter CashierScrubbing JanitorStringed instruments Musician
  8. 8. Non-Work RelatedArthritisDiabetesThyroid gland imbalanceGoutBroken or dislocated bones of the wristHormonal changes associated with menopauseOral use of contraceptivesPregnancyWrist cystsGynecological surgery
  9. 9. Signs and Symptoms Aching in the Tingling in the Numbness in the thumb, perhaps fingers fingers moving up as far as the neckBurning pain from Change in touch or Clumsiness in the wrist to the temperature hands fingers sensation Weakness of grip,ability to pinch and Swelling of hand Change in sweat other thumb and forearm functions of hand actions
  10. 10. Diagnosis• CTS is a clinical diagnosis [2]• Sensory examination – Abnormalities in sensory modalities may be present on the palmar aspect of the first 3 digits and radial one half of the fourth digit
  11. 11. Diagnosis• Motor examination – Wasting and weakness of the median- innervated hand muscles (LOAF muscles) may be detectable. – L - First and second lumbricals – O - Opponens pollicis – A - Abductor pollicis brevis – F - Flexor pollicis brevis
  12. 12. Special Test• No good clinical test exists to support the diagnosis of CTS. – Hoffmann-Tinel sign • Gentle tapping over the median nerve in the carpal tunnel region elicits tingling in the nerves distribution. – Phalen sign • Tingling in the median nerve distribution is induced by full flexion (or full extension for reverse Phalen) of the wrists for up to 60 seconds • This test has 80% specificity but lower sensitivity.
  13. 13. Special Test – The carpal compression test[6] • This test involves applying firm pressure directly over the carpal tunnel, usually with the thumbs, for up to 30 seconds to reproduce symptoms. • Reports indicate that this test has a sensitivity of up to 89% and a specificity of 96%. – The square wrist sign • The ratio of the wrist thickness to the wrist width is greater than 0.7. • This test has a modest sensitivity/specificity of 70%.• Several other tests have been advocated, but they rarely provide additional information beyond that which the Phalen and square wrist signs provide
  14. 14. ElectroDiagnostic • Electrodes are placed on the forearm and a mild electrical current is passed through the arm. • Measurement of how fast & how well the median nerve responds indicates if there is damage to the nerve. • ED tests can help: – identify peripheral neuropathy – locate other sites of compression – establish severity
  15. 15. Management (Non Surgical)• Physical Therapy• Given CTS is associated with low aerobic fitness and increased BMI, it is inherent to provide the patient with an aerobic fitness program.• Stationary biking, cycling, or any other exercise that puts strain on the wrists probably should be avoided.• It may be possible to enlarge the carpal tunnel by specific stretching techniques. Such an exercise program may provide a new noninvasive treatment for CTS in the future.[2]
  16. 16. • Occupational Therapy• A physical therapist will observe and evaluate the dynamics and ergonomics or the working environment.• Ergonomics is the study and control of the effects of postures, stresses, motions, and other physical forces on the human body engaged in work. [7]• Physical therapist will show employees how to adjust their work area, handle tools, or perform tasks in a way that puts less stress on the body.• They may teach employees a number of exercises to increase flexibility of their arm/hand region while they are at work.[7]• Specific stretching/strengthening program for the hand and wrist may be useful in improving strength and dexterity (particularly following surgical treatment), although it can exacerbate symptoms.
  17. 17. • Splint• Wrist splints are recommended for use either at night, or both day and night although they get in the way when doing daily activities. These help to keep wrist straight and reduce pressure on the compressed nerve.• Most individuals with mild-to-moderate carpal tunnel syndrome (CTS; according to electrophysiologic data) respond to conservative management, usually consisting of splinting the wrist at nighttime for a minimum of 3 weeks. [2]
  18. 18. Medication• Short (1-2 wk) courses of regular NSAIDs can be of benefit, particularly if there is any suggestion of inflammation in the wrist region. Likewise, if edema is thought to be prominent, then a short course of a mild diuretic may be of benefit.• NSAIDs provide pain relief and reduction of inflammation. Reducing inflammation in the structures passing through the carpal tunnel decreases pressure and provides some relief to the compressed nerve. [2]• Conditions that cause edema may increase pressure in the carpal tunnel. Diuretics may be beneficial in reducing edema.• Steroid injection into the carpal tunnel is of benefit, as is oral prednisone .• Vitamin B-6 or B-12 supplements are of no proven benefit.• Overuse of legal drugs (eg, caffeine, nicotine, alcohol) can contribute to CTS and should therefore be reduced
  19. 19. Management Surgical• Patients whose condition does not improve following conservative treatment and patients who initially are in the severe carpal tunnel syndrome should be considered for surgery.• There are 2 types of surgery :
  20. 20. Open Carpal Tunnel Release• The surgeon makes a 2-5 inch incision in the lower palm and wrist area. [8]• The carpal ligament is opened. This frees the median nerve.• The incision is closed with stitches. A bulky bandage is applied to the wound, with care taken to ensure that digit movement is NOT restricted.• Effective release of TCL has been shown to increase carpal tunnel volume by 24% [6]
  21. 21. Endoscopic Carpal Tunnel Release• A tiny, ½-inch incision is made on the palm side of the wrist.• A fiber optic camera is passed through which allows the surgeon to view the inside of the carpal tunnel.• Another tiny incision is made. Surgical tools are passed in and these instruments are used to release the carpal ligament and free the median nerve.• After the camera and instruments are removed, a few stitches are necessary to close the incisions. A bulky bandage is placed over the wounds. [8]
  22. 22. Complication• Carpal tunnel syndrome may continue to increase median nerve damage, leading to permanent impairment and disability.• Some individuals can develop chronic wrist and hand pain.[2]
  23. 23. Prognosis• Carpal tunnel syndrome appears to be progressive over time and can lead to permanent median nerve damage.• Whether any conservative management can prevent progression is unclear.• Even with surgical release, it appears that the syndrome recurs to some degree in a significant number of cases possibly in up to one third after 5 years.• Initially, approximately 90% of mild to moderate CTS cases respond to conservative management. Over time, however, a number of patients progress to requiring surgery.[2]
  24. 24. References1. Moore K. L. & Dalley A.F , 2006, Lippincott Williams and Wilkins Clinically oriented anatomy, Chapter 6 Upper Limbs, 6:8182. http://emedicine.medscape.com/article/327330 accessed on 10 September 20113. http://www.bupa.co.uk/individuals/health- information/directory/c/carpal-tunnel accessed on 10 September 20114. http://www.concordortho.com/patient- education/topic-detail- popup.aspx?topicID=699047371a7cfea5c5064b8bdb7 d68b5 accessed on 10 September 2011
  25. 25. 5. Bland,J. (2007) Carpal tunnel syndrome. BMJ August 20076. Rodner, C,M. and Katarincic, J. (2006) Open carpal tunnel release. Techniques in orthopaedics 21(1): 3-117. American Physical Therapy Association (1996), APTA publication Carpal Tunnel Syndrome a Physical Therapist’s Perspective8. Robbins D, (2010) , Lecture on Carpal Tunnel Syndrome ppt.

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