Plantar fasciitis is a common foot condition characterized by heel pain, involving inflammation or degeneration of the plantar fascia, a thick band of tissue running along the bottom of the foot. While many conservative treatments exist, cortisone shots are an option for pain relief.
Cortisone Shots for Plantar Fasciitis
Cortisone, or corticosteroid, is a synthetic hormone with strong anti-inflammatory properties. When injected for plantar fasciitis, it reduces inflammation in the affected tissue, alleviating pain and swelling.
The injection targets the area of most severe pain, concentrating its anti-inflammatory effects precisely where needed. While effective for pain relief, a cortisone shot primarily manages symptoms and does not repair underlying tissue damage.
The Injection Procedure and Recovery
Before a cortisone shot, a healthcare provider confirms the diagnosis through a consultation. The injection itself is a quick outpatient procedure.
During the procedure, a local anesthetic is often used to numb the area for comfort. The injection site is typically on the inner part of the foot, avoiding the heel’s fat pad to minimize risks. Ultrasound guidance may be used for precise needle placement. Some patients might experience a temporary increase in pain, a “cortisone flare,” within the first few days. Rest for 24-48 hours is usually recommended, with limited activity, as pain relief can begin within hours to several days.
Potential Outcomes and Considerations
Cortisone shots offer pain relief, reduced inflammation, and improved mobility. While relief can vary, often lasting three to six months, effectiveness may diminish significantly after 12 weeks.
Despite potential relief, adverse effects exist. These include temporary pain flare-ups in about 30% of patients, usually resolving within 72 hours. Rarer risks involve skin discoloration, heel fat pad atrophy, and infection. A very rare but serious complication is plantar fascia rupture, reported in about 1.5% of cases. Multiple injections are generally not recommended due to these risks, as they can weaken the plantar fascia and lead to rupture or tissue damage.
When to Consider a Cortisone Shot
Cortisone injections are not a first-line treatment for plantar fasciitis. They are usually considered after several months of conservative approaches, such as rest, icing, stretching exercises, supportive footwear, and orthotics, have not provided adequate relief.
A cortisone shot suits those with severe or chronic pain limiting daily activities. It often integrates into a broader treatment strategy, including physical therapy and activity modifications. Consulting a healthcare provider is important to discuss appropriateness, weighing benefits against risks.