THERA-EGG - Resistive Hand Exerciser

  • $17.99
    Unit price per 
Shipping calculated at checkout.


The ergonomically-shaped THERA-EGG, Resistive Hand Exerciser provides an effective means to rehabilitate and strengthen fingers, hands and wrists. Small and easy to use, it can be used anytime, anywhere, increasing patient compliance. Latex free.

  • The THERA-EGG is available in four color coded densities making it suitable for most stages of rehabilitation - Orange is extra soft. Green is Soft. Blue is Medium and Plum is firm..
  • Made of a non-allergenic visco-elastic polymer that will not crack, leak, or melt.
  • Molded in the shape of an egg to fit the natural contours of the hand.
  • Can be heated to provide additional relief for arthritic and injured hands.
  • Used for muscle strength improvement, dexterity and mobility improvement, grip strengthening, rheumatoid joint loosening, sport strength training, stress reduction, treatment for Repetitive Strain Injuries (RSI) 

Hot or Cold Therapy

Heating the THERA-EGG in your palm with the narrow end pointed toward the thumb in a container of warm water for 3 to 4 minutes prior to activities could improve peripheral circulation in the hands and fingers by affecting superficial vasodilation within the muscular system. Chilling the THERA-EGG in a refrigerator could reduce local edema and desensitize painful areas. CAUTION: Do not place the THERA-EGG alone in a microwave. Always heat fully immersed in a cup of water.

Directions of Use

Follow instructions and recommendations by your doctor or practitioner. Read the instructions prior to using the THERA-EGG. Do not exceed the prescribed number of repetitions. Consult your doctor or therapist if soreness or inflammation occurs.

Care and Cleaning

If used properly, the THERA-EGG will give long and trouble-free use. If it becomes dirty, simply wash in warm soapy water, rinse and pat dry with a cloth towel. (Do not use paper towel as it may leave lint on the surface). Dusting the surface of the THERA-EGG with baby powder or talcum powder will remove any surface tackiness.

Finger Flexion: Place the THERA-EGG in your palm with the narrow end; pointed toward the thumb. Using one finger at a time, squeeze and release. Repeat. THERAPIST NOTE: Placing the THERA-EGG in the hand with the pointed side facing the ulnar direction and squeezing with each individual digit will help to increase intrinsic strength of the lumbricales which will increase flexion strength at the metacarpophalangeal joints.

Finger Adduction: Place the THERA-EGG between your index and middle fingers
with the narrow end pointing away from the palm. Squeeze fingers together with a scissors action and release. Repeat. THERAPIST NOTE: Placing the Eggsercizer between the second and third digits and squeezing will assist in strengthening the muscles of adduction in the hand and wrist including the extensor carpi radialis brevis, the extensor carpi radialis longus and the extensor carpi ulnaris.

Thumb Flexion: Place the THERA-EGG in your palm with the narrow end pointed toward the thumb and index finger. Apply pressure on the THERA-EGG. Hold, relax and repeat. THERAPIST NOTE: Placing the THERA-EGG in the hand with the pointed side between the thumb and the index finger and applying pressure with the thumb on the THERA-EGG will help increase the intrinsic strength of the thumb muscles.
Pinch Grip: Hold the THERA-EGG between the thumb and index finger, pointed end towards the thumb. Squeeze and release. Repeat. THERAPIST NOTE: Placing the THERA-EGG between the thumb and index finger and applying pressure will aid in increasing the pinch strength of the flexor pollicis brevis, the flexor pollicis longus and the lumbricales of the index finger.
Grip Strength Pronated: Place the THERA-EGG in your palm with the narrow end pointed away from your thumb, turn your forearm and hand that the palm faces downward. Using all your fingers, squeeze and release. Repeat. THERAPIST NOTE: Squeezing the THERA-EGG with the pronated will increase strength of the flexor carpi radialis, flexor carpi ulnaris, flexor digitorum superficialis, and the pronator teres and the pronator quadratus. Additional affected muscles will be the flexor digitorum profundus, flexor digitorum superficialis.
Grip Strength Supinated: Place the THERA-EGG in your palm with the narrow end pointed away from your thumb, turn your forearm and hand so that the palm faces upward. Using all your fingers, squeeze and release. Repeat. THERAPIST NOTE: Squeezing the THERA-EGG in a supinated position will help to improve gross motor strength of the flexor carpi radialis and the flexor carpi ulnaris musculature. The flexor digitorum superficialis will be strengthened, and the supinator will also increase in strength.