More Hamstring Injury Facts:

Oral Medications can mask the pain but do not aid in the healing of a Hamstring muscle injury. Anti-inflammatories and Pain killers can cause Hamstring muscle related injuries to worsen.

One out of three athletes who sustain an initial hamstring injury will reinjure their hamstring within a year of returning to play. It is theorized that weakness in the hamstring muscle due to incomplete or improper (scar tissue) healing will often cause a hamstring re-injury.

A Grade 1 Hamstring Injury is a mild strain with a few torn muscle fibers in the hamstring.

A Grade 2 Hamstring Injury is a moderate strain and the patient shows a definite loss in strength.

A Grade 3 Hamstring Injury is a complete tear of the hamstring muscles.

10% to 23% of all acute soccer injuries are typically hamstring tears and hamstring strains (also known as strain injuries of the posterior thigh).

A complete tear of the Hamstring will require reattachment surgery. There is no avoidance of this.


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Hamstring Cramps

A muscle cramp is a painful, prolonged muscle spasm.

Hamstring muscle cramp occurs when the muscles in the upper thigh contract involuntarily.

The hamstring muscles, along with the quadriceps, calves, feet, hands, and abdominals are the most common muscle groups affected by cramps. It is estimated that 95% of the populations will have a cramp at some time during their life, with the risk of cramping increasing with age.

A muscle cramp may occur during activity but can also occur when you are sitting or even sleeping. Cramps can be a minor annoyance or extremely painful and can cause you to immediately stop whatever you are doing until the pain passes.

A cramp can involve the entire muscle, only part of it, or the group of muscles that act together (i.e. the hamstring group of muscles; semitendinosus, biceps femoris, and semimembranosus).

The hamstring muscles are long muscles that cross 2 joints, your hip and knee, and work by contracting and expanding.

The contraction and expansion motion of the hamstring muscles is determined by the signals that are sent to the brain. When a muscle contracts involuntarily (i.e. the signal for the muscle to contract overcomes the signal for it to expand, or relax) it can result in a hamstring muscle cramp.

In some cases, a severe muscle cramp may not release on its own and stretching it manually may be necessary to help relax and lengthen the contracted muscle. If the connective tissue attached to the muscle is weak or the cramp is particularly severe, it may cause the tendons or ligaments to strain or tear. For someone with weak bone structure (i.e. severe osteoporosis), muscle cramps have even been known to cause bone fractures.

Causes of Hamstring Cramps

A muscle cramp is caused by abnormal activity in the hamstrings, either in the nerve signals or within the muscles themselves. This abnormal activity can be caused by:

Hamstring muscle cramps occur with muscle fatigue.
  • Vigorous activity - the cramp may occur during the activity or several hours later.
  • Muscle fatigue from overexerting or repetitive use of the muscle, or from sitting in an awkward position.
  • Lactic acid build up when overloading or overexerting the muscle.
  • Low electrolyte levels or dehydration - Muscles require water, calcium, magnesium, and potassium to function properly.
  • A muscle that has been overstretched or held in one position for a long time.
  • New exercises that involve unused muscles.
  • Inadequate blood supply caused by narrowing of the arteries (atherosclerosis).
  • Multiple sclerosis, muscular dystrophy, other nervous system diseases, or spinal cord damage.
  • Disease such as diabetes, kidney disease, anemia, or thyroid abnormalities.

Hamstring Cramp Symptoms

When you experience a cramp in the hamstring muscles you may feel:

  • A sudden burst of pain, often severe, that stops after a few seconds to a few minutes.
  • A bulge in the cramped muscle that will feel very hard and tense.
  • Tenderness and swelling that may last for several days.
  • Night time wakening if the cramps occur during sleep (nocturnal cramps).

Treating Hamstring Muscle Cramps

The treatment for a muscle cramp is pretty much the same as the treatment for a muscle spasm which is as follows:

Hamstring spasms are frustrating to live with especially when they occur during activity and sports. Keeping your body hydrated and replacing electrolytes during and following activities are positive steps toward preventing spasms. When a spasm occurs, there are home treatments you can use to relax the muscle and reduce the spasm. Proper treatment will get you back to regular activities sooner, stop your pain, and reduce the risk of hamstring muscle injury and further spasm.

If you are getting spasms due to a pinched nerve from a spinal injury, you really need to see your physician. You might be able to use conservative treatment methods to help reduce the frequency or severity of such spasms, but the underlying cause will remain without assistance from a physician or surgeon.

The most widely recommended conservative - yet effective - treatments for muscle spasm are:

  • massage
  • change of diet - eat foods rich in postassium, magnesium and calcium
  • drink more water - stay hydrated
  • heat application
  • stretching
  • increase blood flow

Outside of change in diet, the remaining conservative treatments focus on heat (this temporarily increases flexibility and elongates muscles, tendons and ligament), an increase in blood flow and stretches. Cold compression IS NOT a good method to deal with hamstring muscle cramps, but can be used if you suffer re-injury of your hamstring due to the cramps or other activities. Anytime when your hamstring is swollen, inflamed or painful without experiencing the cramps, you should be using cold. The rest of the time, when you are suffering from hamstring muscle cramps, you should be using Circulation Boost to relieve your hamstring muscle cramps.

Promoting blood flow within a muscle or soft tissue injury to help improve muscle function and/or heal muscle strians/tears is a concept that has been utilized for centuries. This is where the focus has to be if you are seeking long-term improvement.

Oxygen and nutrients, carried within the blood, are critical for the body to heal itself. Without proper blood flow, recovering from an injury or condition will be delayed...sometimes for a very long period of time.

why tshellz stimulates blood flow

More blood now begins to flow effectively to spasming muscles in and around the treated area. Spasmed muscles are typically starved for nutrients - and need the extra blood flow to recover as it is through the blood the body carries the oxygen, water and nutrients needed for proper and long-term healing.

Now, on to recommendation number two in the journey to deal with your spasming muscle...

The Leg TShellz Wrap® - Increased Blood Flow & Improved Flexibility For Your Hamstring

Improved tissue flexibility and increased blood flow can best be achieved at home via use of the TShellz Wrap®. Using a Leg TShellz Wrap® on your hamstring stimulates blood flow wherever you apply the wrap - blood flow that relaxes the spasming muscle to end the spasm cycle. Use of this device results in a dramatic increase in blood flow to the area - all in a non-invasive manner.

Have you seen what happens when you add water to a flower wilted from drought? In essence, your injured muscle is much like a "wilted" flower; your body wants to heal its injury, but needs lots of nutrients to do it. Blood brings new life to your tissue by delivering healing nutrients and oxygen that are vital for their health. In addition, the blood carries away toxins and waste, cleaning the area and healing it faster. Without a good supply of blood, your spasming hamstring muscle simply won't get the nutrients it needs and will continue to spasm.

tshellz coverage hamstring muscles

Using a TShellz Wrap® will not expose you to the risk of causing further harm to soft tissue like you can when using rigorous exercise. The Leg TShellz Wrap® accomplishes the goal of enhanced blood flow without the need for intensive exercise and as such reduces your risk of re-injury.

The healing energy from the TShellz Wrap® will warm soft tissues, improve blood circulation, and boost metabolism and enzyme activity. In stimulating localized blood flow to damaged soft tissue, you provide needed oxygen, water and nutrients to grow and add collagen. In addition, you will experience a clearing of toxins and excess fluid build up from the injury site. Over the intermediate term, this helps to reduce incidents of swelling as trapped fluids will be whisked away - reducing pressure on blood vessels.


Who Should Use the TShellz Wrap®

We recommend the use of a TShellz Wrap®:

  • If you are experiencing muscle spasms, the TShellz Wrap® will introduce heat and increased blood circulation to the area (Localized Enhanced Circulatory Response) - exactly what is needed to stop a spasming muscle.
  • If you are dealing with conditions affecting your range of motion such as an impingement or even arthritis.
  • If you have a chronic leg condition that has lasted for years- this device is intended to kick start the recovery process and help strengthen the surrounding and supporting tissues. Many of our past clients had suffered for years, then were completely amazed at the results only after a few months of treatments.
  • If you are encountering hamstring spasms at work , the TShellz Wrap® will help relax your hamstring prior to work and after a day at the job. This will help reduces the frequency or risk of muscle spasms.
  • If you are still trying to enjoy your favorite activities such as gardening, tennis, golf, etc - use the TShellz Wrap® prior to activity to help reduce chances of re-injuring or re-aggravating those targeted tissues.
  • If you are experiencing atrophy in your hamstrings or quadriceps and want to reduce the chance of re-injury - this is a perfect treatment to use on a regular basis.
  • If you have been to a physical therapist (PT) for some form of soft tissue treatment, massage or stretching, then this is exactly what you need.
  • If you have injured your leg and need surgery, then you will find the T•Shellz blood circulation boost to be a powerful tool after surgery to help surgically repaired tissues recover for long-term health. (once the surgery wound has healed and your physician has given the ok - 6 weeks after surgery minimum)
  • If you are experiencing tightness in your muscle(s) and want to reduce the chance of re-injury while stretching - we recommend the use of a TShellz Wrap® before you stretch.

Increased Blood Circulation = Reduced Risk of Muscle Spasm


Increased Blood Circulation = Increased Healing Capability

TShellz Wraps® contain a unique Carbon Fiber Energy Pad which is flexible and will shape to conform to your body. This Energy Pad emits a uniform wave of perfectly safe energy over its entire surface. This energy is absorbed by soft tissue in the treatment area, opening blood vessels, resulting in an increase in blood flow. Increased blood circulation is what your body needs to accelerate the healing of soft tissue and this is why we recommend the TShellz Wrap®.

The TShellz Wrap® is an FDA Registered Medical Device and is suitable for use in therapeutic clinics and FROM HOME. It is completely safe for people and patients to use for themselves.

The technology found in a TShellz Wrap® has been used for decades in the worlds of professional and amateur sports - a contributing factor as to why athletes seem to recover from injuries so quickly.

Have you ever wondered by an athlete can return to activity after 3 or 4 weeks following a soft tissue injury - while your average person takes much longer to return back to normal? The secret isn't really that much of a secret - it involves consistent treatments (meaning multiple times a day) using a treatment like the TShellz Wrap® to stimulate blood flow to the injured tissues. Most athletes have the luxury of using in-house facilities many times per day.

How many us can afford the time and money to visit a clinic multiple times a day? Very few indeed. This is how you can gain some of the advantages that athletes enjoy in their injury recovery - by using a device like the TShellz Wrap® two or three times a day on a consistent basis.

Consistent Treatments = Consistent And Long Term Improvement

What Else Makes the TShellz Wrap® So Special?

We believe the TShellz Wrap® to be one of the most effective home treatments to increase localized blood flow to soft tissue in and around the treatment area.

We can promise that you will receive a product that is designed to be safe and does what it is supposed to do... reduce pain (as stated in "Therapeutic Heat and Cold", 4th edition. - Ed. Justus F. Lehmann, M.D., Williams, and Wilkin) temporarily increase length & flexibility of soft tissue (as stated in "Therapeutic Heat and Cold", 4th edition. - Ed. Justus F. Lehmann, M.D., Williams, and Wilkin) and aid your body in recovering from tendon, muscle and other soft tissue injuries via enhanced blood flow.

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The unit plugs into a standard wall outlet to get its power. The nice thing about the power supply is that the same unit can be used in North America and overseas as well. It has the capability to operate between 110v and 230v.

The TShellz Wrap® has a special signal controller that can be set for 3 different power levels of application (3=High, 2=Medium, 1=Low). The cord is long enough that you can sit or lie comfortably and watch TV, read or surf the net while you're using it.

Treatments are max 30 minutes in duration and the device can be worn over clothing. This allows you to use the device at work, at home, or really anywhere you have access to an electrical outlet.

Directly below you will find some summarized points from Chapter 9 of "Therapeutic Heat and Cold", 4th edition.
( link) Ed. Justus F. Lehmann, M.D., Williams, and Wilkin.

Generally it is accepted that heat on soft tissue (muscles, tendons, ligaments) provides the following desirable effects:

  • Increases extensibility of collagen tissue. Tissues heated to 45 degrees Celsius and then stretched exhibit a nonelastic residual elongation of about 0.5 to 0.9 percent that persists after the stretch is removed. This does not occur in these same tissues when stretched at normal tissue temperatures.
    Stretching of tissue in the presence of heat would be especially valuable in working with ligaments, joint capsules, tendons, fasciae ... that have become scarred, thickened, or contracted. Such stretching at 45 degrees Celsius caused much less weakening in stretched tissues for a given elongation than a similar elongation produced at normal tissue temperatures.
    Experiments cited clearly showed low-force stretching could produce significant residual elongation when heat is applied together with stretching or range-of-motion exercises. This is safer than stretching tissues at normal tissue temperatures.
  • Muscle spasms have long been observed to be reduced through the use of heat, be they secondary to underlying skeletal, joint, or neuropathological conditions.
  • Pain relief, via the reduction of spasms (attendant or secondary). Pain is also at times related to lack of blood supply due to tension or spasm that can be improved by hyperemia (an increase in blood flow).
  • Heating muscles produces an increased blood flow level similar to that seen during exercise. Temperature elevation also produces an increased blood flow and dilation directly ... probably through direct action on their smooth muscles. The release of bradykinin, released as a consequence of sweat-gland activity, also produces increased blood flow and vasodilation.
  • Increased peripheral circulation provides the transport needed to help evacuate (fluid), which can help inflammation, decrease pain, and help speed healing.

...A Quick Recap of Benefits That Can Be Achieved Via the TShellz Wrap®..

  • We have TShellz Wraps® that can fit on the back, hip, leg, arm, shoulder, knee, plantar, toes, wrist and ankle
  • It can be used before exercise to warm up the problematic joint to reduce the risk of injury (heat elongates soft tissue and makes it more flexible)
  • FDA Registered medical device for use in home or clinics - high quality, 1 year warranty, 60 day trial period (100% refund guaranteed)
  • Increases temporary flexibility and length of tissues (reducing the re-injury factor)
  • It soothes pain and whisks away toxins
  • Carbon fiber Energy Pad is strong, lightweight, and flexible - contours very easily
  • A boost in blood flow helps maximize the body's ability to recover from soft tissue damage. This can be beneficial in saving time and money when associated with doctor or physio visits
  • A boost in blood flow will maximize the body's ability to recover quickly. This can be beneficial in post-surgery rehabilitation, getting you back to work faster. Do not use until at least 6 weeks after surgery, and only after approval from your doctor.

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When Should I Use My TShellz Wrap During the Day?

The most common question we receive from individuals prior to purchasing is - how many times a day should I be using my TShellz Wraps® and when should I be using them? While treatment plans will differ for each individual and their specific condition, there are general guidelines that should be adhered to.

  • Use a Cold Compress or Ice Pack when you are experiencing inflammation (usually after exertion or movement of the injury area).

The Leg TShellz Wrap® would then be used:

  • Right after rising from bed in the morning (as this is when it is most stiff)
  • Prior to going to bed at night (to relax the hamstring, allowing for better sleep with extended legs)
  • Before you know you will be using your injured muscles (going to work, driving, walking/running, etc).

Product Advisors are available 9:00 am to 5:00 pm Eastern Standard Time Monday to Friday.

Learn More About Hamstring Injuries & Treatments

I want to learn more about Hamstring Post-Surgery Recovery

I want to learn more about the TShellz® Circulatory Boost Wrap

I want to learn more about Ice & Heat: Which Is Better For Treatment?

I want to learn more about Stretching for the Hamstring

I want to learn more about Soft Tissue Injury Treatments

During your recovery, you will probably have to modify and/or eliminate any activities that cause pain or discomfort at the location of your soft tissue injury until the pain and inflammation settle. Always consult your doctor and/or Physical Therapist before using any of our outstanding products, to make sure they are right for you and your condition. The more diligent you are with your treatment and rehabilitation, the faster you will see successful results!


Hamstring Injury Facts:

Hamstring Muscles cross both your hip and knee, and help extend (straighten) the hip or bend the knee.

A Hamstring injury is an injury to one of the three different hamstring muscles in the back of the thigh.

The three Hamstring muscles name are: Biceps Femoris, Semitendinousus, Semimembranosus muscles.

Continually using your Hamstring muscles while injured will lead to a worse injury; and yes, it is difficult to avoid using the Hamstring.

Most Hamstring injuries happen while playing sports, such as soccer or football.

Once you have suffered one Hamstring injury, there is a very good chance you will suffer another Hamstring injury.


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