Sprain Information

A sprain (from Middle French espraindre - to wring) is an injury to ligaments that is caused by being stretched beyond their normal capacity and possibly torn. A muscular tear caused in the same manner is referred to as a strain. In cases where either ligament or muscle tissue is torn, immobilization and surgical repair may be necessary. Ligaments are tough, fibrous tissues that connect bone to bone across the joints. Sprains can occur in any joint but are most common in the ankle.^[1]

Symptoms

• Pain
• Swelling
• Bruising
• Hemarthrosis
• Decreased ability to move the joint
• If the ligament is ruptured, one may hear a popping sound
• Difficulty using the affected extremity

Diagnosis

The diagnosis of sprain injury is made by a physical examination. In most cases an x-ray of the affected joint is obtained to ensure that there are no fractures. If a tear in the ligament is suspected, then an MRI is obtained. MRI is usually ordered after swelling has subsided and can readily identify the presence of a ligament injury.^[2]

Causes

Sprains typically occur when the joint is overextended. This can cause over stretching of the ligament, tear or rupture the ligament.^[3]

Joints involved

Although any joint can experience a sprain, some of the more common include:

• the ankle. It is the most common, and has been said that sprains such as serious ankle sprains are more painful and take longer to heal than actually breaking the bones in that area.^[4] See sprained ankle for more details.
• the knee. Perhaps one of the more talked about sprains is that to the anterior cruciate ligament (ACL) of the knee. This is a disabling sprain common to athletes, especially in football, basketball, pole vaulting, softball, baseball, soccer and judo. See Anterior cruciate ligament injury.
• the fingers.
• the wrist.
• the toes.

Risk factors

There are certain factors which increase risk of sprains. Fatigue of muscles generally leads to sprains. When one suddenly starts to exercise after a sedentary lifestyle, sprains are quite common. Not warming-up is the most common cause of sprains in athletes. Warming-up loosens the joint, increases blood flow and makes the joint more flexible. Poor conditioning of the body can also lead to sprains.^{[citation needed]}

Diagnosis of sprains is not difficult but in most cases x-rays are obtained to ensure that there is no fracture. In many cases, if the injury is prolonged, magnetic resonance imaging (MRI) is performed to look at surrounding soft tissues and the ligament.^[5]

Treatment

The first modality for a sprain can be remembered using the acronym RICE.^[6] The treatment of sprains depends on the extent of injury and the joint involved. Medications like non-steroidal anti-inflammatory drugs can relieve pain. Weight bearing should be gradual and advanced as tolerated.^[7]

• Rest: The sprain should be rested. No additional force should be applied on site of the sprain. In case of, for example, a sprained ankle, walking should be kept to a minimum.^[8]

• Ice: Ice should be applied immediately to the sprain to minimize swelling and ease pain. It can be applied for 10-15 minutes at a time (longer application of ice may cause damage instead of healing), 3-4 times a day. Ice can be combined with a wrapping to minimize swelling and provide support.^[8]

• Compression: Dressings, bandages, or ace-wraps should be used to immobilize the sprain and provide support. When wrapping the injury, more pressure should be applied at the far end of the injury and decrease in the direction of the heart, the reason for this is that it causes unnecessary fluid to be flushed back up the blood stream easier in order to be recycled. Compresion should not cut off the circulation of the limb.^[8]

• Elevate: Keeping the sprained joint elevated (in relation to the rest of the body) will also help to minimize swelling.^[8]

Ice and compression (cold compression therapy) will not completely stop swelling and pain, but will help to minimize them as the sprain begins to heal itself. Careful management of swelling is critical to the healing process as additional fluid may pool in the sprained area.

The joint should be exercised again fairly soon, in milder cases from 1 to 3 days after injury.^[9] Special exercises are sometimes needed in order to regain strength and help reduce the risk of ongoing problems. The joint may need to be supported by taping or bracing, helping protect it from re-injury.^[9]

Functional rehabilitation

Prolonged immobilization delays the healing of a sprain, as it usually leads to muscle atrophy and stiff joint. The components of an effective rehabilitation for all sprain injuries include increasing range of motion and progressive muscle strengthening exercise.^[10]

References

1. ^ Sprain Treatment Retrieved on 2010-01-26
2. ^ How To Perform Treatment of a Sprained Ankle About health online portal. Retrieved on 2010-02-01
3. ^ Sprains and Strains: What's the Difference American academy of orthopaedic surgeons. Retrieved on 2010-01-26
4. ^ Holes Human Anatomy & Physiology, Shier, David, Jackie Butler, Ricki Lewis, Mc Graw Hill 2007, Eleventh Ed., p.157,160
5. ^ Strains and sprains information Mayo Clinic. Retrieved on 2010-01-26
6. ^ Mnemonic at medicalmnemonics.com 235
7. ^ Sprain and Strain Symptoms and Treatment About Network. Retrieved on 2010-01-26
8. ^ ^{a b c d} "Sprained Ankle". American Orthopaedic Foot and Ankle Society. 2005-03. http://orthoinfo.aaos.org/topic.cfm?topic=A00150. Retrieved 2008-04-01.
9. ^ ^{a b} Ankle Sprains: Healing and Preventing Injury Written by familydoctor.org editorial staff. American Academy of Family Physicians. Reviewed/Updated: 08/06. Created: 01/96
10. ^ Sprained ankle American academy of orthopedic surgeons. Retrieved on 2010-01-26

Categories: Diseases involving the fasciae | Injuries

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