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A South Melbourne & Point Cook Physical Therapy Clinics Putting You First.Don’t Put Up With Pain. Start Healing Now.

    South Melbourne
  • 300 Albert Road
  • South Melbourne VIC 3205
    • Phone
  • 03 9699 2499

    Point Cook
  • 220 Point Cook Road
  • Point Cook VIC 3030
    • Phone
  • 03 8386 7400

    Opening Hours
  • Mon to Fri 8:00am – 6:00pm
  • Saturday 8:00am – 1:00pm

Anatomy of the Thumb

Thumb injuries usually affect two thumb tendons. These tendons are called the abductor pollicis longus (APL) and the extensor pollicis brevis (EPB).

Thumb Injuries such as Trigger finger or Trigger Thumb can affect tendons that move the fingers. These are held in place on the bones by a series of ligaments called pulleys. These ligaments form an arch on the surface of the bone that creates a sort of tunnel for the tendon to run in along the bone. To keep the tendons moving smoothly under the ligaments, the tendons are wrapped in a slippery coating called tenosynovium.

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THUMB TENDONITIS

Introduction
The condition called de Quervain’s tenosynovitis causes pain on the inside of the wrist and forearm just above the thumb. It is a common problem affecting the wrist and is usually easy to diagnose.

Causes of Thumb Tendonitis
Repeatedly performing hand and thumb motions such as grasping, pinching, squeezing, or wringing may lead to the inflammation of tenosynovitis. This inflammation can lead to swelling, which hampers the smooth gliding action of the tendons within the tunnel. Arthritic diseases that affect the whole body, such as rheumatoid arthritis, can also cause tenosynovitis in the thumb. In other cases, scar tissue from an injury can make it difficult for the tendons to slide easily through the tunnel.

Symptoms of Thumb Tendonitis

  • At first, the only sign of trouble may be soreness on the thumb side of the forearm, near the wrist. If the problem isn’t treated, pain may spread up the forearm or further down into the wrist and thumb.
  • As the friction increases, the two tendons may actually begin to squeak as they move through the constricted tunnel. This noise is called crepitus. If the condition is especially bad, there may be swelling along the tunnel near the edge of the wrist. Grasping objects with the thumb and hand may become increasingly painful.
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TRIGGER FINGER AND TRIGGER THUMB

Introduction
Trigger finger and trigger thumb are conditions affecting the movement of the tendons as they bend the fingers or thumb toward the palm of the hand. This movement is called flexion.

Causes of Trigger Finger or Thumb
Triggering is usually the result of a thickening in the tendon that forms a nodule, or knob. The pulley ligament may thicken as well.

The constant irritation from the tendon repeatedly sliding through the pulley causes the tendon to swell in this area and create the nodule. Rheumatoid arthritis, partial tendon lacerations, repeated trauma from pistol- gripped power tools, or long hours grasping a steering wheel can cause triggering. Infection or damage to the synovium causes a rounded swelling (nodule) to form in the tendon. Triggering can also be caused by a congenital defect that forms a nodule in the tendon. The condition is not usually noticeable until infants begin to use their hands.

Symptoms of Trigger Finger or Thumb

  • Pain and a funny clicking sensation when the finger or thumb is bent.
  • Tenderness usually occurs over the area of the nodule, at the bottom of the finger or thumb.
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Diagnosis of Thumb Injuries

At the Centre for Musculoskeletal Medicine we usually diagnose Thumb injuries easily through a physical examination. Most of the time no special tests are required, however distinguishing between different Thumb injuries, which often carry the very similar symptoms can be the major concern.

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Thumb Injury Treatment

  • Shock Wave,  soft tissue and stretches to help control the swelling of the tenosynovium and ease symptoms.
  • Platelet Rich Plasma – to stimulate healing and reduce pain
  • Prolotherapy – to stimulate healing and reduce pain
  • Special exercises are used to encourage normal gliding of the tendon.
  • Wear a special forearm and thumb splint called a thumb- spica splint. This splint keeps the wrist and lower joints of the thumb from moving. The splint allows the APL and EPB tendons to rest, giving them a chance to begin to heal.
  • Cortisone injection. Cortisone reduces the swelling of the tenosynovium and may temporarily relieve your symptoms. Cortisone injections will usually control the inflammation in the early stages of the problem.
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