Strain (injury)

Last updated
Strain
Other namesMuscle strain, pulled muscle, torn muscle
2010-10-02 pulled hamstring.jpg
Two images of the same strain to the hamstring and associated bruising. One of the pictures was shot through a mirror.
Specialty Emergency medicine
Symptoms Bruise, swelling, redness and soreness
CausesExcessive stress and/or repeated injury on a muscle
3D animation depicting strain 3D Medical Animation Depicting Strain-Tendon.jpg
3D animation depicting strain

A strain is an acute or chronic soft tissue injury that occurs to a muscle, tendon, or both. The equivalent injury to a ligament is a sprain. [1] Generally, the muscle or tendon overstretches and partially tears, under more physical stress than it can withstand, often from a sudden increase in duration, intensity, or frequency of an activity. Strains most commonly occur in the foot, leg, or back. Immediate treatment typically includes four steps abbreviated as R.I.C.E.: rest, ice, compression, elevation.

Contents

Signs and symptoms

Typical signs and symptoms of a strain include pain, functional loss of the involved structure, muscle weakness, contusion, and localized inflammation. [2] A strain can range from mild overstretching to severe tears, depending on the extent of injury. [1]

Cause

A strain can occur as a result of improper body mechanics with any activity (e.g., contact sports, lifting heavy objects) that can induce mechanical trauma or injury. Generally, the muscle or tendon overstretches and is placed under more physical stress than it can withstand. [1] Strains commonly result in a partial or complete tear of a tendon or muscle, or they can be severe in the form of a complete tendon rupture. Strains most commonly occur in the foot, leg, or back. [3] Acute strains are more closely associated with recent mechanical trauma or injury. Chronic strains typically result from repetitive movement of the muscles and tendons over a long period of time. [1]

Degrees of Injury (as classified by the American College of Sports Medicine): [4]

To establish a uniform definition amongst healthcare providers, in 2012 a Consensus Statement on suggested new terminology and classification of muscle injuries was published. [5]

The classifications suggested were:

The major difference suggested was the use of "indirect" muscle injury verse "grade 1" to provide subclassifications when advanced images were negative.

Indirect Muscle Injury FUNCTIONAL (Negative MSK US & MRI) [6]

• Type 2: Neuromuscular muscle disorder

STRUCTURAL MUSCLE INJURY (Positive MSK US & MRI) [6] • Type 3: Partial Muscle Tear • Type 4: (Sub) total tear

DIRECT MUSCLE INJURY • Bump or Cut: Contact-related

Risk factors

Although strains are not restricted to athletes and can happen while doing everyday tasks, people who play sports are more at risk for developing a strain. It is common for an injury to develop when there is a sudden increase in duration, intensity, or frequency of an activity. [3]

Treatment

The first-line treatment for a muscular strain in the acute phase include five steps commonly known as P.R.I.C.E. [7] [8]

Immediate treatment is usually an adjunctive therapy of NSAIDs and Cold compression therapy. Cold compression therapy acts to reduce swelling and pain by reducing leukocyte extravasation into the injured area. [9] [10] NSAIDs such as Ibuprofen/paracetamol work to reduce the immediate inflammation by inhibiting Cox-1 and Cox-2 enzymes, which are the enzymes responsible for converting arachidonic acid into prostaglandin. However, NSAIDs, including aspirin and ibuprofen, affect platelet function (this is why they are known as "blood thinners") and should not be taken during the period when tissue is bleeding because they will tend to increase blood flow, inhibit clotting, and thereby increase bleeding and swelling. After the bleeding has stopped, NSAIDs can be used with some effectiveness to reduce inflammation and pain. [11]

A new treatment for acute strains is the use of platelet rich plasma (PRP) injections which have been shown to accelerate recovery from non-surgical muscular injuries. [12]

It is recommended that the person injured should consult a medical provider if the injury is accompanied by severe pain, if the limb cannot be used, or if there is noticeable tenderness over an isolated spot. These can be signs of a broken or fractured bone, a sprain, or a complete muscle tear. [13]

See also

Related Research Articles

<span class="mw-page-title-main">Tendinopathy</span> Inflammation of the tendon

Tendinopathy is a type of tendon disorder that results in pain, swelling, and impaired function. The pain is typically worse with movement. It most commonly occurs around the shoulder, elbow, wrist, hip, knee, or ankle.

<span class="mw-page-title-main">Shoulder problem</span> Medical condition

Shoulder problems including pain, are one of the more common reasons for physician visits for musculoskeletal symptoms. The shoulder is the most movable joint in the body. However, it is an unstable joint because of the range of motion allowed. This instability increases the likelihood of joint injury, often leading to a degenerative process in which tissues break down and no longer function well.

<span class="mw-page-title-main">Sprain</span> Damage to one or more ligaments in a joint

A sprain is a soft tissue injury of the ligaments within a joint, often caused by a sudden movement abruptly forcing the joint to exceed its functional range of motion. Ligaments are tough, inelastic fibers made of collagen that connect two or more bones to form a joint and are important for joint stability and proprioception, which is the body's sense of limb position and movement. Sprains may be mild, moderate, or severe, with the latter two classes involving some degree of tearing of the ligament. Sprains can occur at any joint but most commonly occur in the ankle, knee, or wrist. An equivalent injury to a muscle or tendon is known as a strain.

<span class="mw-page-title-main">Bruise</span> Type of localized bleeding in tissues outside blood vessels

A bruise, also known as a contusion, is a type of hematoma of tissue, the most common cause being capillaries damaged by trauma, causing localized bleeding that extravasates into the surrounding interstitial tissues. Most bruises occur close enough to the epidermis such that the bleeding causes a visible discoloration. The bruise then remains visible until the blood is either absorbed by tissues or cleared by immune system action. Bruises which do not blanch under pressure can involve capillaries at the level of skin, subcutaneous tissue, muscle, or bone.

<span class="mw-page-title-main">Back injury</span> Damage or wear to bones, muscles or other tissues of the back

Back injuries result from damage, wear, or trauma to the bones, muscles, or other tissues of the back. Common back injuries include sprains and strains, herniated discs, and fractured vertebrae. The lumbar spine is often the site of back pain. The area is susceptible because of its flexibility and the amount of body weight it regularly bears. It is estimated that low-back pain may affect as much as 80 to 90 percent of the general population in the United States.

<span class="mw-page-title-main">Achilles tendinitis</span> Medical condition of the ankle and heel

Achilles tendinitis, also known as achilles tendinopathy, occurs when the Achilles tendon, found at the back of the ankle, becomes sore. Achilles tendinopathy is accompanied by alterations in the tendon's structure and mechanical properties. The most common symptoms are pain and swelling around the affected tendon. The pain is typically worse at the start of exercise and decreases thereafter. Stiffness of the ankle may also be present. Onset is generally gradual.

A soft tissue injury is the damage of muscles, ligaments and tendons throughout the body. Common soft tissue injuries usually occur from a sprain, strain, a one-off blow resulting in a contusion or overuse of a particular part of the body. Soft tissue injuries can result in pain, swelling, bruising and loss of function.

<span class="mw-page-title-main">Bowed tendon</span>

Tendinitis/tendonitis is inflammation of a tendon, often involving torn collagen fibers. A bowed tendon is a horseman's term for a tendon after a horse has sustained an injury that causes swelling in one or more tendons creating a "bowed" appearance.

<span class="mw-page-title-main">Patellar tendinitis</span> Human disease

Patellar tendinitis, also known as jumper's knee, is an overuse injury of the tendon that straightens the knee. Symptoms include pain in the front of the knee. Typically the pain and tenderness is at the lower part of the kneecap, though the upper part may also be affected. Generally there is no pain when the person is at rest. Complications may include patellar tendon rupture.

<span class="mw-page-title-main">Snapping hip syndrome</span> Medical condition

Snapping hip syndrome, also referred to as dancer's hip, is a medical condition characterized by a snapping sensation felt when the hip is flexed and extended. This may be accompanied by a snapping or popping noise and pain or discomfort. Pain often decreases with rest and diminished activity. Snapping hip syndrome is commonly classified by the location of the snapping as either extra-articular or intra-articular.

<span class="mw-page-title-main">Sprained ankle</span> Medical condition

A sprained ankle is an injury where sprain occurs on one or more ligaments of the ankle. It is the most commonly occurring injury in sports, mainly in ball sports such as basketball, volleyball, football, and tennis.

<span class="mw-page-title-main">Anterior cruciate ligament injury</span> Ligament injury near the knee

An anterior cruciate ligament injury occurs when the anterior cruciate ligament (ACL) is either stretched, partially torn, or completely torn. The most common injury is a complete tear. Symptoms include pain, an audible cracking sound during injury, instability of the knee, and joint swelling. Swelling generally appears within a couple of hours. In approximately 50% of cases, other structures of the knee such as surrounding ligaments, cartilage, or meniscus are damaged.

<span class="mw-page-title-main">Golfer's elbow</span> Tendon inflammation disease of the elbow

Golfer's elbow, or medial epicondylitis, is tendinosis of the medial common flexor tendon on the inside of the elbow. It is similar to tennis elbow, which affects the outside of the elbow at the lateral epicondyle. The tendinopathy results from overload or repetitive use of the arm, causing an injury similar to ulnar collateral ligament injury of the elbow in "pitcher's elbow".

Cold compression therapy, also known as hilotherapy, combines two of the principles of rest, ice, compression, elevation to reduce pain and swelling from a sports or activity injury to soft tissues and is recommended by orthopedic surgeons following surgery. The therapy is especially useful for sprains, strains, pulled muscles and pulled ligaments.

<span class="mw-page-title-main">RICE (medicine)</span> Medical acronym

RICE is a mnemonic acronym for the four elements of a treatment regimen that was once recommended for soft tissue injuries: rest, ice, compression, and elevation. It was considered a first-aid treatment rather than a cure and aimed to control inflammation. It was thought that the reduction in pain and swelling that occurred as a result of decreased inflammation helped with healing. The protocol was often used to treat sprains, strains, cuts, bruises, and other similar injuries. Ice has been used for injuries since at least the 1960s, in a case where a 12-year-old boy needed to have a limb reattached. The limb was preserved before surgery by using ice. As news of the successful operation spread, the use of ice to treat acute injuries became common.

<span class="mw-page-title-main">Musculoskeletal injury</span> Medical condition

Musculoskeletal injury refers to damage of muscular or skeletal systems, which is usually due to a strenuous activity and includes damage to skeletal muscles, bones, tendons, joints, ligaments, and other affected soft tissues. In one study, roughly 25% of approximately 6300 adults received a musculoskeletal injury of some sort within 12 months—of which 83% were activity-related. Musculoskeletal injury spans into a large variety of medical specialties including orthopedic surgery, sports medicine, emergency medicine and rheumatology.

<span class="mw-page-title-main">Knee pain</span> Medical condition

Knee pain is pain in or around the knee.

The treatment of equine lameness is a complex subject. Lameness in horses has a variety of causes, and treatment must be tailored to the type and degree of injury, as well as the financial capabilities of the owner. Treatment may be applied locally, systemically, or intralesionally, and the strategy for treatment may change as healing progresses. The end goal is to reduce the pain and inflammation associated with injury, to encourage the injured tissue to heal with normal structure and function, and to ultimately return the horse to the highest level of performance possible following recovery.

Running injuries affect about half of runners annually. The frequencies of various RRI depend on the type of running, such as speed and mileage. Some injuries are acute, caused by sudden overstress, such as side stitch, strains, and sprains. Many of the common injuries that affect runners are chronic, developing over longer periods as the result of overuse. Common overuse injuries include shin splints, stress fractures, Achilles tendinitis, Iliotibial band syndrome, Patellofemoral pain, and plantar fasciitis.

<span class="mw-page-title-main">Ankle problems</span> Medical condition

Ankle problems occur frequently, having symptoms of pain or discomfort in the ankles.

References

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  2. Brumitt, Jason; Cuddeford, Tyler (November 2015). "Current Concepts of Muscle and Tendon Adaptation to Strength and Conditioning". International Journal of Sports Physical Therapy. 10 (6): 748–759. ISSN   2159-2896. PMC   4637912 . PMID   26618057.
  3. 1 2 Mulcahey, Mary K. (June 2020). "Sprains, Strains and Other Soft-Tissue Injuries". OrthoInfo. American Academy of Orthopaedic Surgeons. Retrieved 5 December 2020.
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  7. MedicalMnemonics.com: 235
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  10. "Clinical Studies on Cold and Compression Therapy" (PDF). Endomed, Inc. December 2007. Retrieved 5 December 2020.
  11. Day, Richard O.; Graham, Garry G. (1 December 2004). "The Vascular Effects of COX-2 selective inhibitors". Australian Prescriber. 27 (6): 142–145. doi: 10.18773/austprescr.2004.119 .
  12. Halpern, Brian C.; Chaudhury, Salma; Rodeo, Scott A. (2012-07-01). "The role of platelet-rich plasma in inducing musculoskeletal tissue healing". HSS Journal. 8 (2): 137–145. doi:10.1007/s11420-011-9239-7. ISSN   1556-3316. PMC   3715623 . PMID   23874254.
  13. Neustaedter, Randy. "Natural Treatment for Injuries". Retrieved 5 December 2020.