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causes of carpal tunnel

Common Causes of Carpal Tunnel Syndrome

Common Carpal Tunnel Causes

Carpal Tunnel happens when the tendons become swollen (tenosynovitis) or if the tunnel size itself decreases because of injury-causing compression to the median nerve.  When compression occurs, a person can experience numbness, tingling, or a dull sensation of the thumb, index, middle and ring fingers. Symptoms may include pain during pinching and gripping, or a feeling of clumsiness and the inability to hold things. The best way to avoid carpal wrist pain is to understand the main causes of carpal tunnel and use that information at work and at home.

WHAT IS THE CARPAL TUNNEL?
The carpal tunnel is a small space at the wrist in which the median nerve and nine tendons pass through. The median nerve travels on top of the tendons through the tunnel. The tunnel itself is made up of your wrist bones and along the top of the tunnel is a thick fibrous ligament called the transverse carpal ligament.

COMMON CAUSES OF CARPAL TUNNEL
Carpal Tunnel is typically not related to a specific injury. Some common causes of carpal tunnel syndrome include:

Genetic Predisposition – Many cases can be a result of physical characteristics of carpal tunnel or medical conditions associated with CTS, which also run in the family.

Repetitive Movements – Certain types of work, leisure, and sports activities require use of the hand and wrist repetitively. Occupations such as manufacturing/assembly line workers, grocery checkers, musicians, carpenters, and many others require the same movements. Common hobbies such as golfing, knitting, and gardening also require repeated movements that cause carpal tunnel syndrome.

Injury or Trauma – Sprain or fracture of the wrist can cause swelling and pressure to the median nerve.

Pregnancy & Menopause – Hormonal fluctuation in women plays a role in CTS. Such fluctuation may cause fluid retention and other changes that cause swelling in the body. Fluid retention frequently occurs during the last trimester of pregnancy and is the reason for CTS.

Medical Conditions – Diabetes, hypothyroidism, lupus, obesity, and rheumatoid arthritis.

ACTIVITIES TO AVOID TO MINIMIZE SYMPTOMS

  • Avoid keeping your wrists bent in either direction. The best position for the wrist is neutral (straight)
  • Avoid rapid repetitive forceful or prolonged hand or arm use such as seen with factory work or data entry.
  • Avoid tight gripping and pinching
  • Avoid pressure to the palm or wrist
  • Avoid extreme cold or vibration.
avoiding workplace hazards for feet and hands

Avoiding Workplace Hazards for Feet and Hands

avoiding workplace hazards for feet and hands

OSHA Estimates totals for foot and hand types of injuries annually at 320,000 hand and finger injuries, 70,000 eye injuries, 70,000 head and face injuries, and 110,000 foot and toe injuries in 1987. Close to 30% of the total injury base. Sharp or heavy falling objects are the primary sources of foot injuries. So how does one go about avoiding workplace hazards for feet and hands?

To help you get started we have listed out some of the common injuries and actions that lead to workplace injuries of the hand and foot. This is by no means complete as there certainly could be burns or lacerations or multiple levels of sprains/strains in either body area in addition to those noted.

Foot Injuries

One’s feet provide support and movement. Yet, the 26 bones in the human foot can be easily damaged. According to the BLS, 40 laborers suffer disabling injuries to their feet and toes every day. These injuries account for 8.5 percent of all lost-time injuries in the construction industry.

  • Compression – when foot or toe is squeezed between two objects
  • Puncture – when a sharp object like a nail, penetrates the shoe
  • Slipping – loss of traction due to oil, water or chemicals
  • Chemicals/Solvents – may penetrate ordinary safety shoes and can harm feet
  • Temperature Extremes – insulated boots may be necessary, depending on climate
  • Wetness – extended exposure to water may result in discomfort and possible infection
  • Electricity – a danger when using power tools or electric equipment

Some of the most common foot and leg injuries include:

  • Fractures – A fracture of the bones in the leg, foot, or knee may be caused by falling objects or an accidental fall from a height. Some fractures can be treated by using a lightweight cast and crutches, while more serious fractures may require surgery and extensive physical therapy.
  • Knee Tendonitis – Knee Tendonitis is a swelling of the tendons surrounding the knee. Individuals who spend a lot of time walking, standing, or lifting objects while at work are at risk of developing this painful condition. Older individuals are, particularly at risk.
  • Knee Bursitis – Knee Bursitis is a swelling of a fluid sac that provides cushioning for your knee joint. Like tendonitis, bursitis can cause severe pain, inflammation, and loss of mobility.
  • Loss of Limb – The most serious workplace accidents may require amputation. These life-altering accidents can have devastating effects on an individual’s quality of life and ability to work. Amputation cases are especially complicated because they involve issues of retraining, prosthetic replacement, wound care, and home modification. Leg and foot injuries can be among the most devastating for an individual to sustain as well as the most difficult to overcome. Using crutches or a wheelchair can severely limit a person’s mobility, and make it difficult to complete, let alone enjoy, everyday activities at work, at home, and in the community.
    Leg and foot injuries can also make it very difficult, if not impossible, to return to one’s pre-injury employment. Individuals who perform manual labor rely on the use of their legs and feet to perform nearly every aspect of their jobs. Furthermore, many workplaces are also not properly equipped for individuals with limited mobility.

hand injury


Hand Injuries

The hands are an extremely important part of the body and can be damaged in a matter of seconds, leaving a Laborer permanently disabled. According to the Bureau of Labor Statistics (BLS), Laborers suffer over 8,600 disabling hand injuries each year, accounting for roughly 18 percent of all disabling injuries.

The most common dangers include:

  • Pinch or crush points
  • Hot surfaces
  • Rotating devices
  • Chemicals
  • Machinery not properly locked out

Some common hand, wrist, and arm injuries that can occur in the workplace include:

  • Fractures – A hand, wrist, or arm fracture can occur due to falling objects or other accidents. Some fractures can be severe and may require extensive reconstructive surgery.
  • Nerve damage – An accident may damage the nerves in the hand and arm, which may cause numbness and pain.
  • Loss of limb – A serious accident may require the amputation of an arm or hand. This serious injury can dramatically affect all aspects of your life. Individuals must relearn how to conduct even simple functions, and while prosthetic limbs can help, they are expensive. Furthermore, approximately 60-80% of amputees experience phantom limb syndrome, causing them to feel sensations such as aching, itching, and burning to emanate from the body part that is no longer there.

In addition to hand and arm injuries that are caused by an accident, many common injuries are caused or worsened by repetitive stress.
These ailments include:

  • Carpal tunnel syndrome – People with carpal tunnel syndrome experience pain and tingling sensations in their thumbs and fingers. Although the exact cause of carpal tunnel syndrome is unknown, many researchers believe that performing repetitive manual tasks, such as typing on a keyboard, may cause or worsen the condition. Carpal tunnel syndrome may require wrist surgery, steroid injections, or the use of a brace.
  • Repetitive strain injuries – Repetitive strain injuries are characterized by painful sensations while performing a repetitive task, such as lifting heavy objects. These injuries can worsen the more an activity is performed. Injuries to the arm and hand, whether suffered by an accident or through repetitive strain, can permanently impact a person’s life. Even the completion of simple, everyday tasks may become difficult and exhausting, diminishing one’s overall quality of life.

Understanding what the injuries are is the first step in prevention. If you are looking to put protocols in place to help team members avoid workplace hazards for feet and hands, please reach out to a physical therapy clinic that specializes in industrial rehabilitation. They can work with you to improve the safety of the workplace and the employees.

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