Anterior Shoulder Instability

RapidForce Shapes are uniquely designed to provide pain relief and dynamic mechanical support to the muscles, ligaments and tendons of the shoulder.

Anterior instability is an injury to the glenohumeral joint in the shoulder. The rounded top portion of the upper arm bone (humerus) is dislocated from the shoulder socket (glenoid cavity) and thrust toward the front side (anterior) of the body. Pain from anterior instability will be located in the front of the shoulder, 2–3 inches above the armpit.

The RapidForce Star Shape is designed to reduce shoulder pain, including pain from anterior shoulder instability. The Star Shape has a central core that is placed on the skin 2–3 inches above the armpit, right above the area where the upper arm meets the shoulder joint to stabilize the area. The Shape’s six arms are stretched outwards, creating dynamic structural support.

If you'd like assistance choosing the best RapidForce Shape for your needs, please email us at

Disclaimer: Please see your medical professional with any kind of pain. Pain could be an indication of a serious condition. RapidForce Shapes are not meant to replace professional medical advice, professional treatment, or a professional treatment plan.

The RapidForce Difference

  • STRONG - Thick multi-layered system that is 15x stronger than kinesiology tape
  • FLEXIBLE - Conforms and moves with your body any direction you go
  • LONG LASTING - Stays put for 3-5 days for 24-hour pain relief and support
  • SIMPLE - Easy-to-apply: simply peel, place, stretch, and secure

RapidForce Shapes for Shoulder Pain

Star Shape

From $8.95

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Application Instructions

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Time it Right

While RapidForce Shapes can be applied at any time, they should be applied 1–2 hours before beginning strenuous physical activity. The Shapes can start working is as little as two hours, but some applications take up to four hours.

Prep Skin Thoroughly

Wash and dry the skin to remove oils, moisture, and dirt. Trim or shave body hair; this helps create a more secure bond and more comfortable removal. Apply the provided Skin Tac liquid adhesive wipe. Allow 30 seconds for it to dry.

Customize Stretch

Secure the Shape’s central core to the most painful spot. For daily wear or moderate-to-light athletics, a mild stretch of 1/2” is ideal. Application instructions vary based on Shape, so read and follow the instructions mailed with your shape(s).

Secure Bond

With both the Shape and the skin at room temperature, carefully begin applying the shape. Once the shape is secure, rub it vigorously to maximize adhesive bond to skin.

  1. 1. Locate a point 2–3 inches above the armpit

    1. Locate a point 2–3 inches above the armpit

  2. 1. Locate a point 2–3 inches above the armpit

    2. Apply the center of the Star Shape

    Peel off the backing of the central core of the Star Shape and orient it so the short are align with the armpit. Place over the front of the shoulder. Press to secure the bond.

  3. 1. Locate a point 2–3 inches above the armpit

    3. Apply the arms - 1/2” Stretch

    Peel off the middle backing of one of the arms, leaving the end tab in place. While stabilizing the center with one hand, customize the stretch based on intensity of activity and place straight out from the center. Smooth the fabric onto the skin, moving from the center of the Shape outwards. Remove the backing from the end tab and place on the skin. Do not stretch this small piece. Press over the entire arm of the Star Shape for about 10 seconds to secure the bond. 

  4. 1. Locate a point 2–3 inches above the armpit

    4. Apply the other Arms - 1/2" Stretch

    Repeat for all arms, following application method from Step 3.

  5. 1. Locate a point 2–3 inches above the armpit

    5. Feel Relief and Remove

    You may begin feeling relief within a few hours. However, it could take up to 24 hours. RapidForce shapes can provide pain relief and muscle support for up to five days but can be removed at any time. To remove, pull from the end of the arms to the center. If hair is present, pull in the direction of the hair’s growth to reduce discomfort. For easier removal, use mild warm water in the shower and then remove the shape slowly.