Shin Splints, Anterolateral Shin Splint, Posteromedial Shin Splint

A shin splint is a painful condition that occurs from damage to muscles along the shin, and the pain can occur anywhere from just below the knee to above the AidMyAnkle The typical cause is continued, repeated stress to the lower leg, and is common in runners.

Shin splints may be caused by:
• An inexperienced runner just beginning to run (too much too fast).
• Running on side slopes (ie. banked tracks).
• Tight Calf Muscles, exerting extra force on shin muscles.
• A sudden change from soft to hard running surfaces.
• Poor or worn out footwear.
• Excessive uphill running.
• Poor running mechanics. This could include: heavy forward lean, excessive weight on the ball of the foot, running with toes pointed outward, landing too far back on the heels causing the foot to flap down, and overpronation. Of all of the possible causes, pronation (foot roll) is the most likely to be overlooked.

Anterolateral Shin Splints

Anterolateral shin splints affect muscles in the front and outside parts of the shin, and is the result of a natural imbalance in the size of opposing muscles. Shin muscles pull the foot up, whereas the large and powerful calf muscle pulls the foot down everytime the heel strikes the ground when running. These calf muscles can exert a lot of force, enough force that can actually injure the shin muscles. Anterolateral shin splints will cause pain in the front and outside of the shin. Initial pain is felt when the heel strikes the ground though eventually the pain just stays constant.

To allow this type of shin splint to heal, the person must stop running and do other kinds of exercise recommended by their doctor or physical therapist. Such exercises usually involve stretching the calf muscle, as tight calf muscles put a lot of pressure on the shin muscle and tendons. A constant regimen of ultrasound is commonly recommended to help massage the affected muscles and tendons, allowing them to heal more quickly and reduce inflammation and pain in the area. Treatment of the calf muscle with ultrasound will also help increase the flexibility of this muscle, thus indirectly reducing the average level of strain on the shin muscle and tendon group.

Posteromedial shin splints

Posteromedial shin splints affect muscles in the back and inner part of the lower leg. These muscle groups are responsible for lifting the heel to support the runners weight on the ball portion of the foot when running. This type of shin splint is often caused by running on a banked track or non-level running surface or wearing improper shoes that do not protect the foot from rolling (pronation). Pain begins on the inside of the lower leg (usually within 7 inches above the ankles), but will worsen and continue to rise up the leg. Initially, only tendons of the muscles will become inflamed, but if running continues, the muscles themselves could become affected. At the worst, the tendon could become detached from the bone - a painful occurrence that causes bleeding and excessive inflammation.

To allow a posteromedial shin splint to heal, the running must temporarily stop running and do other kinds of exercise recommended by their doctor or physical therapist. Special shoes may be prescribed during the healing phase, and it may be advisable to look into potential problems with pronation of the feet. This can often be solved by researching and using shoes that better prevent pronation and/or the avoidance of running on side slopes.