An ankle sprain is a common injury that occurs in both athletes and
non-athletes. A sprain by definition is the stretching of tissues that
surround a joint. When discussing sprains, the tissues in question are
ligaments that are dense fibrous structures that run from one bone to
another. The severity of the sprain is dependent on the degree that the
ligaments are stretched. Ligaments will allow a certain amount of stretch,
however, when this limit is passed the ligament either stays stretched
out, a deformity known as attenuation, or it ruptures completely.
Depending on the mechanism of action, this injury can involve the
ligaments on either the inside (medial) or outside (lateral) portion of
the ankle. The most common mechanism of injury involves the foot turning
inward in relation to the leg, a term we define as inversion. When this
occurs, the ligaments on the outside of the ankle undergo a pathological
stress and are often injured. If this occurs, it is of utmost importance
to assess the integrity of the ligaments in question. This is easily
accomplished through a special study called stress radiography. The
physician can easily perform this study in the office and, following the
measurement of certain angles, can discuss the extent of ligament injury.
In certain cases, further radiographic studies may be indicated and can be
discussed in further detail.
Treatment of ligament injuries varies with relation to anatomical
location and severity of injury. Your physician will discuss the
appropriate method of treatment with you in detail. Minor sprains may
require several weeks of bracing in a variety of different devices.
Additionally, resting the affected extremity as well as taking
anti-inflammatory medications will assist in the healing process. Severe
sprains without obvious loss of ligament integrity will require more
extensive immobilization that may or may not include non-weightbearing
casting. Severe sprains resulting in torn ligaments often require surgical
intervention to assure that strength is restored to the affected joint.
Your surgeon will be able to discuss these procedures in more detail.
Often, ligament injuries are not treated aggressively at the onset of
injury. This may result in loss of joint integrity and congruity. When
this occurs, the patient may have difficulty with recurrent sprains with
or without strenuous activity. These injuries often affect the lifestyle
of the patient. When these problems are seen and appropriately diagnosed,
surgical ligament reconstruction is warranted. Specific surgical
procedures can be discussed with your Podiatric surgeon.