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An ankle sprain occurs when the strong ligaments that support the ankle stretch beyond their limits and tear. Ankle sprains are common injuries that occur among people of all ages. They range from mild to severe, depending upon how much damage there is to the ligaments.
Cause
Your foot can twist unexpectedly during many different activities, such as:
- Walking or exercising on an uneven surface
- Falling down
- Participating in sports that require cutting actions or rolling and twisting of the foot—such as trail running, basketball, tennis, football, and soccer
- During sports activities, someone else may step on your foot while you are running, causing your foot to twist or roll to the side.
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Bruising and swelling are common signs of a sprained ankle.
Treatment
Almost all ankle sprains can be treated without surgery. Even a complete ligament tear can heal without surgical repair if it is immobilized appropriately.
Home Treatments
For milder sprains, your doctor may recommend simple home treatment.
RICE
The RICE protocol is effective for most sports-related injuries. RICE stands for Rest, Ice, Compression, and Elevation.
Rest
Take a break from the activity that caused the injury. Your doctor may recommend that you use crutches to avoid putting weight on your leg.
Ice
Use cold packs for 20 minutes at a time, several times a day. Do not apply ice directly to the skin
Compression
To prevent additional swelling and blood loss, wear an elastic compression bandage.
Elevation
To reduce swelling, recline when you rest, and put your leg up higher than your heart. Non-steroidal anti-inflammatory medicines. Drugs like aspirin and ibuprofen reduce pain and swelling.
Nonsurgical Treatment
Some sprains will require treatment in addition to the RICE protocol and medications.
Crutches
In most cases, swelling and pain will last from 2 to 3 days. Walking may be difficult during this time and your doctor may recommend that you use crutches as needed.
Immobilization
During the early phase of healing, it is important to support your ankle and protect it from sudden movements. For a Grade 2 sprain, a removable plastic device such as a cast-boot or air stirrup-type brace can provide support. Grade 3 sprains may require a short leg cast or cast-brace for 2 to 3 weeks.
Your doctor may encourage you to put some weight on your ankle while it is protected. This can help with healing.
Physical therapy
Early motion
To prevent stiffness, your doctor or physical therapist will provide you with exercises that involve range-of-motion or controlled movements of your ankle without resistance.
Strengthening exercises
Once you can bear weight without increased pain or swelling, exercises to strengthen the muscles and tendons in the front and back of your leg and foot will be added to your treatment plan. Water exercises may be used if land-based strengthening exercises, such as toe-raising, are too painful. Exercises with resistance are added as tolerated.
Proprioception (balance) training
Poor balance often leads to repeat sprains and ankle instability. A good example of a balance exercise is standing on the affected foot with the opposite foot raised and eyes closed. Balance boards are often used in this stage of rehabilitation.
Endurance and agility exercises
Once you are pain-free, other exercises may be added, such as agility drills. Running in progressively smaller figures-of-8 is excellent for agility and calf and ankle strength. The goal is to increase strength and range of motion as balance improves over time.
Surgical Treatment
Surgical treatment for ankle sprains is rare. Surgery is reserved for injuries that fail to respond to nonsurgical treatment, and for patients who experience persistent ankle instability after months of rehabilitation and nonsurgical treatment
Arthroscopy
During arthroscopy, your doctor uses a small camera, called an arthroscope, to look inside your ankle joint. Miniature instruments are used to remove any loose fragments of bone or cartilage, or parts of the ligament that may be caught in the joint.
Reconstruction
Your doctor may be able to repair the torn ligament with stitches or sutures. In some cases, he or she will reconstruct the damaged ligament by replacing it with a tissue graft obtained from other ligaments and/or tendons found in the foot and around the ankle.