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Carpal Tunnel Syndrome- Endoscopic Release Surgery

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Carpal Tunnel Syndrome is a common condition that affects the hand and wrist.  It occurs when the Median Nerve in the wrist is compressed.  Nerves carry messages between our brains, spinal cord, and body parts.  The Median Nerve carries signals for sensation and muscle movement.  When the Median Nerve is compressed or entrapped, it cannot function properly.  This syndrome has received much attention in the last few years because of suggestions that it may be linked with jobs that require repeated use of the hands.  In actual fact, little proof of this exists.
 
Carpal Tunnel Syndrome is more common in women and people between the ages of 30 and 60 years old.  It is the most common nerve entrapment syndrome and affects up to 10% of the population.  Individuals with Carpal Tunnel Syndrome may feel numbness, pain, and a “tingly” sensation in their fingers, wrists, and arms.  They may have difficulty performing grasping and gripping activities because of discomfort or weakness.

Read more about Carpal Tunnel Syndrome- Endoscopic Release Surgery

  • Introduction
  • Anatomy
  • Causes
  • Symptoms
  • Diagnosis
  • Surgery
  • Treatment
  • Recovery
  • Introduction
  • Anatomy
  • Causes
  • Symptoms
  • Diagnosis
  • Surgery
  • Treatment
  • Recovery

Introduction

Carpal Tunnel Syndrome is a common condition that affects the hand and wrist.  It occurs when the Median Nerve in the wrist is compressed.  Nerves carry messages between our brains, spinal cord, and body parts.  The Median Nerve carries signals for sensation and muscle movement.  When the Median Nerve is compressed or entrapped, it cannot function properly.  This syndrome has received much attention in the last few years because of suggestions that it may be linked with jobs that require repeated use of the hands.  In actual fact, little proof of this exists.
 
Carpal Tunnel Syndrome is more common in women and people between the ages of 30 and 60 years old.  It is the most common nerve entrapment syndrome and affects up to 10% of the population.  Individuals with Carpal Tunnel Syndrome may feel numbness, pain, and a “tingly” sensation in their fingers, wrists, and arms.  They may have difficulty performing grasping and gripping activities because of discomfort or weakness.
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Anatomy

The Median Nerve passes from the arm, through the wrist, and into our fingers.  At the center of the wrist joint, the Median nerve goes through a passageway called the Carpal Tunnel.  Our wrist bones form the bottom of the Carpal Tunnel.  The Transverse Carpal Ligament covers the top.  Ligaments are strong bands of tissues that connect bones together.  In addition to the Median Nerve, the Carpal Tunnel also contains many tendons.  These tendons attach to the muscles that allow our fingers to bend or flex.
 
The Median Nerve supplies the sense of feeling to our thumb, index finger, middle finger, and half of the ring finger.  It also sends messages to the Thenar Muscles that move the thumb.  We use the Thenar Muscles when we position our thumb to grasp and hold objects.  If the Median Nerve is compressed in the Carpal Tunnel, it will send faulty messages as it travels into the hand and fingers.
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Causes

Carpal Tunnel Syndrome develops when the tissues and tendons in the Carpal Tunnel swell and make the area within the tunnel smaller.  This can happen in association with other medical conditions or when the tendons are irritated from overuse.  The increased pressure within the tunnel causes the Median Nerve to become compressed.  The pressure disrupts the way the nerve works and causes the symptoms of Carpal Tunnel Syndrome.
 
Usually, the cause of Carpal Tunnel Syndrome is unknown.  However, there are several circumstances that can create pressure on the Median Nerve.
 
Pressure may develop from prolonged wrist positioning that compromises the position of the median nerve.  The median nerve may become irritated when our wrists are bent downward or flexed for long periods of time.  Irritation may occur when the wrist is flexed and the hand is turned towards the side of the little finger.  We position our hands like this when we hold on to the handlebars on a bicycle or the handles used to push a wheelchair or a lawnmower.  These hand positions are also used when we grasp carpentry tools, such as the handle on a hammer or a paint roller.  Other factors that appear to contribute to the development of Carpal Tunnel Syndrome include cold temperature and repetitive, forceful, vibratory, and fast movements, such as those used in the meat packing industry.
 
Some medical conditions, such as diabetes and thyroid disease, are associated with Carpal Tunnel Syndrome.  Rheumatoid arthritis, joint dislocation, and fractures can cause the space in the tunnel to narrow.  Some women develop Carpal Tunnel Syndrome because of swelling from fluid retention caused by hormonal changes.  This may occur during pregnancy, premenstrual syndrome, or menopause.
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Symptoms

The primary symptoms of Carpal Tunnel Syndrome are pain, numbness, and tingling.  The numbness and tingling is typically present in the thumb, index, middle, and half of the ring finger.  Some people describe the pain as a deep ache or burning.  Your pain may radiate into your arms.  Your thumb may feel weak and clumsy.  You may have difficulty grasping items, and you may drop things.  Your symptoms may be more pronounced at night, when you perform certain activities, or in cold temperatures.

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Diagnosis

Your doctor can diagnose Carpal Tunnel Syndrome by conducting a medical examination, reviewing your medical history, and asking you about your activities and symptoms.  During the physical exam, your doctor will check your wrist and hand for sensation, and perform a thorough hand examination. 
 
Your doctor may ask you to perform a couple of simple tests to determine if there is pressure on the Median Nerve.  For the Phalen’s Test, you will firmly flex your wrist for 60 seconds.  The test is positive if you feel numbness, tingling, or weakness.  To test for the Tinel’s Sign, your doctor will tap on the Median Nerve at the wrist.  The test is positive if you feel tingling or numbness in the distribution of the median nerve.  Lab tests may be ordered if your doctor suspects a medical condition that is associated with Carpal Tunnel Syndrome.  Your doctor may take an X-ray to identify arthritis or fractures. 
 
In some cases, physicians use nerve conduction studies to measure how well the Median Nerve works and to help specify the site of compression.  Physicians commonly use a test called a Nerve Conduction Velocity (NCV) test.  During the study, a nerve is stimulated in one place and the amount of time it takes for the message or impulse to travel to a second place is measured.  Your doctor will place sticky patches with electrodes on your skin that covers the Median Nerve.  The NCV may feel uncomfortable, but only during the time that the test is conducted.
 
An Electromyography (EMG) test is often done at the same time as the NCV test.  An EMG measures the impulses in the muscles to identify poor nerve input.  Healthy muscles need impulses to perform movements. Your doctor will place fine needles through your skin and into the muscles that the Median Nerve controls.  Your doctor will be able to determine the amount of impulses conducted when you contract your muscles.  The EMG may be uncomfortable and your muscles may remain a bit sore following the test.
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Surgery

Surgery is recommended when non-surgical options do not work or if the condition becomes worse.  There are a few types of outpatient surgery to remove pressure on the Median Nerve.  Your doctor will help you decide which option is best for you.

Endoscopic Carpal Tunnel Release surgery is done using an endoscope placed in a small incision.  An endoscope is small device with a light and a lens that allows the surgeon to view the Carpal Tunnel without disturbing the nearby tissues.  It may be used in conjunction with a camera or video system.
 
Endoscopic Carpal Tunnel Release most often uses a local or regional anesthetic to numb the wrist and hand area.  In some cases, individuals are sedated for the surgery.  The surgeon makes a small opening below the crease of the wrist and inserts the endoscope to view the Carpal Tunnel.  Some surgeons make a second incision in the palm of the hand.  Guided by the endoscope, the surgeon places a tube called a cannula along the side of the Median Nerve.  A special surgical instrument is inserted through the cannula that makes an incision in the Transverse Carpal Ligament.  This surgery also opens the Carpal Tunnel and makes it larger to take pressure off of the Median Nerve.  Because Endoscopic Carpal Tunnel Release spares some of the tissue in the palm, individuals may heal faster and experience less discomfort.
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Treatment

The symptoms of Carpal Tunnel Syndrome can often be relieved without surgery.  Some medical conditions associated with Carpal Tunnel Syndrome can be treated.  For some people, refraining from the activities that cause discomfort will make the symptoms go away on their own.  You may find it helpful to change your patterns of hand use, take breaks from repetitive activities, and use positioning devices at your workstation to relieve pressure on the Median Nerve.
 
Some cases of Carpal Tunnel Syndrome respond to treatments that relieve pain and provide rest.  Your doctor may recommend that you wear a splint at night to support your wrist and relieve pressure on the median nerve.
 
Splints may also be worn during activities that aggravate your symptoms to position the wrist properly and provide wrist support.  Your doctor may suggest over-the-counter anti-inflammatory medication to help reduce your pain and swelling.  Sometimes doctors choose to inject corticosteroid medication to provide symptom relief.
 
Your doctor may recommend that you participate in therapy following non-surgical or surgical treatment.  A therapist can teach you exercises to gain strength, joint stability, and coordination.  It may take several months for strength in the wrist and hand to return to normal.
 
A therapist can make recommendations to help improve your function with daily tasks.  A therapist can make workstation modifications and recommend different ways to perform your activities to reduce the chance of future problems.  For instance, if you type or work on a computer, it may be helpful to have your therapist examine your workstation.  There are several products that may help you improve your posture and aid in wrist positioning during activities such as typing.  These specialists may also be able to recommend tools with special grips or handles to provide you with better wrist positioning.
 
Work and activity modifications may help to relieve pressure on the median nerve.  This can include eliminating activities that cause symptoms or taking frequent rest breaks when performing such activities.
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Recovery

Following surgery, your incision will be wrapped in a soft dressing.  Your physician may recommend that you wear a splint to provide support and promote healing.  You will be able to move your fingers immediately after surgery.  You will need to avoid heavy grasping or pinching motions for about six weeks.  Your doctor may recommend that you participate in occupational or physical therapy to gain strength, joint stability, and coordination.  It may take several months for strength in the wrist and hand to return to normal.

Recovery from Carpal Tunnel Surgery is individualized and depends on the extent of the condition and the type of surgery performed.  Your doctor will tell you what to expect.
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Copyright ©  - iHealthSpot Interactive - www.iHealthSpot.com

This information is intended for educational and informational purposes only. It should not be used in place of an individual consultation or examination or replace the advice of your health care professional and should not be relied upon to determine diagnosis or course of treatment.

The iHealthSpot patient education library was written collaboratively by the iHealthSpot editorial team which includes Senior Medical Authors Dr. Mary Car-Blanchard, OTD/OTR/L and Valerie K. Clark, and the following editorial advisors: Steve Meadows, MD, Ernie F. Soto, DDS, Ronald J. Glatzer, MD, Jonathan Rosenberg, MD, Christopher M. Nolte, MD, David Applebaum, MD, Jonathan M. Tarrash, MD, and Paula Soto, RN/BSN. This content complies with the HONcode standard for trustworthy health information. The library commenced development on September 1, 2005 with the latest update/addition on February 16, 2022. For information on iHealthSpot’s other services including medical website design, visit www.iHealthSpot.com.

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Anchor Physical Therapy Spine & Sports Medicine
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Anchor Physical Therapy Spine & Sports Medicine in Broomfield, Colorado just outside of Denver offers comprehensive care for orthopedic injuries of the back & neck (spine), shoulder & elbow, hand & wrist, hip & knee, and foot & ankle. Our certified physical therapists and hand therapists provide expertise in sports performance, sport-specific training, Sports Medicine, Concussion Program, sports injury prevention, Worker's Compensation, Cold Laser Therapy, Trigger Point Dry Needling, Functional Dry Needling, Custom Orthotics, as well as Wellness Services including balance and fall prevention, craniosacral therapy, gravity fitness classes, indoor cycling, massage, nutritional counseling, tai chi and yoga all with convenient class schedules. We provide proven techniques to treat Back Pain, Headaches, Low Back Pain, Neck Pain, Sports-Related Injury, Tendonitis, TMJ Dysfunction, Arthritis, Carpal Tunnel, Hand Pain, Rheumatoid Arthritis, Tendonitis, Bursitis/Tendonitis, Heel Spurs, Plantar Fasciitis, Migraines and Osteoarthritis.