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Ankle Sprain

Definition:
An ankle sprain is a tear of the ligaments that support the ankle. Ligaments are strong bands of tissue that cross joints and connect bones to each other.

Causes:
Ankle sprains may be caused by:

  • Falling
  • Sudden twisting of the ankle, such as:
    • Stepping on an uneven surface or in a hole
    • Taking an awkward step when running, jumping, or stepping up or down
    • Inversion of the foot, which causes your ankle to "roll over" when playing sports or exercising
Risk Factors:
A risk factor is something that increases your chances of getting a disease or condition. In this case, these include:
  • Playing sports
  • Poor coordination
  • Poor balance
  • Inadequate strength in muscles and tight ligaments
  • Loose joints
Symptoms:
When you have a sprained ankle, you will likely have :
  • Pain, swelling and bruising around the ankle
  • Worsening of pain when walking, standing, pressing on the sore area, or moving the ankle inward
  • Inability to move the ankle joint without pain
  • Popping or tearing sound at the time of the injury (possibly)
Diagnosis:
An ankle sprain may not require a visit to the doctor. However, you should call your doctor or visit an emergency room if:
  • You can't move your ankle without significant pain.
  • You can't put any weight on that foot.
  • Pain is over a bony part of your foot or ankle.
  • Pain interferes significantly with walking.
  • Pain is not relieved by ice, pain relief medication and elevation.
  • You feel numbness in the leg, foot or ankle.
  • Pain does not improve within five to seven days
  • You are not certain about the severity of the injury.
  • You don't know how to care for this injury.

The doctor will:

  • Ask you about your symptoms and how the injury occurred
  • Examine your ankle to assess the severity of the injury

Tests may include:

  • X-rays – to make sure that no bones are broken
  • MRI scan – to see if a ligament has torn completely (rarely needed)

Ankle sprains are graded according to the damage to the ligaments. The more ligaments involved, the more severe the injury.

Grade1
  • Some minor tearing of ligament tissue, but the ankle remains stable.
Grade 2
  • Partial tearing of ligament tissue
  • Mild instability of the joint
  • Usually involves damage to two ankle ligaments
Grade 3
  • Complete tearing of two or three of the ligaments
  • Significant instability of the joint
Treatment:
Treatment for a sprained ankle includes:

Rest – Avoid putting any pressure on your ankle by not walking on it. Using crutches will allow for partial weight bearing.

Ice – Apply ice or a cold pack to the ankle for 15 to 20 minutes, 4 times a day for at least 2 to 3 days. This helps reduce pain and swelling. Wrap the ice or cold pack in a towel. Do not apply the ice directly to your skin.

Compression – Wrap your ankle in an elastic compression bandage (e.g., Ace bandage). Wrap from the toes going up toward the knee. This will limit swelling of your ankle and foot.

Elevation – Keep your ankle raised above the level of your heart for 48 hours. This will help drain fluid and reduce swelling.

Medication – Take one of the following drugs to help reduce inflammation and pain:

  • Ibuprofen (Motrin, Advil)
  • Naproxen (Aleve, Naprosyn)
  • Acetaminophen (Tylenol)
  • Aspirin

Rehabilitation Exercises – Begin exercises to restore flexibility, range of motion, and strength of the muscles around your ankle as recommended by your health care professional.

Brace – You may need to wear a brace to immobilize your ankle. In many instances, a brace, which stabilizes and compresses the ankle, will allow for early weight bearing and an earlier return to activity. You will be rehabilitating the ankle as it heals. If you play sports, you may need to wear an ankle brace or tape your ankle when you return to play.

Leg Cast – A cast is very rarely needed for an ankle sprain. If you have a severe sprain, your doctor may recommend a short leg cast for 2 to 3 weeks, but this is very rare. In many cases, there are special braces that can be used instead of a cast.

Surgery – Surgery is rarely needed to repair an ankle sprain, but it may be necessary to repair a third degree sprain in which all three ligaments are torn.

Prevention:
Many ankle sprains cannot be prevented. However, you can reduce your risk of spraining an ankle:
  • Take a break from sports or exercise when you feel tired.
  • Do exercises that strengthen leg and foot muscles.
  • Learn the proper technique for exercise and sporting activities. This will decrease stress on all your muscles, ligaments and tendons, including those around your ankle.
  • If you have injured your ankle before, you are much more likely to injure it again. You may reduce your risk of repeated sprains by wearing an Air-Cast or an ankle brace.
 
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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