Subtalar Joint Arthritis: Causes, Symptoms, and How Podiatrists Can Help

Arthritis in the foot and ankle can make everyday activities painful and frustrating. One commonly overlooked source of chronic foot pain is subtalar joint arthritis. This condition affects the joint below the ankle and can significantly impact walking, balance, and mobility. Fortunately, podiatrists play an important role in diagnosing and treating subtalar joint arthritis to help patients stay active and comfortable.

What Is the Subtalar Joint?

The subtalar joint is located just below the ankle joint, between the talus and calcaneus (heel bone). This joint allows the foot to move side to side and adapt to uneven surfaces while walking. It plays a critical role in balance, shock absorption, and proper foot mechanics.

When arthritis develops in this joint, the cartilage that cushions the bones begins to wear down. As the joint becomes inflamed and damaged, movement becomes painful and stiff.

What Causes Subtalar Joint Arthritis?

Several conditions can lead to arthritis in the subtalar joint, including:

Post-Traumatic Arthritis

One of the most common causes is previous injury, especially a calcaneal (heel bone) fracture or severe ankle sprain. Damage to the joint surfaces can eventually lead to arthritis years later.

Osteoarthritis

Normal wear and tear over time can gradually break down cartilage within the joint.

Rheumatoid Arthritis

Autoimmune inflammatory conditions can affect multiple joints in the foot, including the subtalar joint.

Flat Feet or Abnormal Foot Mechanics

Poor alignment and instability can place excessive stress on the subtalar joint over time.

Coalition or Congenital Conditions

Some patients are born with abnormal connections between foot bones, increasing the risk of joint degeneration later in life.

Symptoms of Subtalar Joint Arthritis

Symptoms often develop gradually and may worsen over time. Common signs include:

• Pain below the ankle, especially on uneven ground
• Stiffness in the back or side of the foot
• Difficulty walking on hills or uneven surfaces
• Swelling around the hindfoot
• Reduced side-to-side foot motion
• Limping or altered walking pattern
• Tenderness around the subtalar joint
• Difficulty with prolonged standing or walking

Many patients notice that walking on gravel, grass, or sloped surfaces becomes particularly uncomfortable.

How Is Subtalar Joint Arthritis Diagnosed?

A podiatrist will perform a thorough examination of the foot and ankle, evaluating joint motion, alignment, and areas of tenderness. Imaging studies may include:

• X-rays to assess joint narrowing and bone spurs
• CT scans for detailed evaluation of joint damage
• MRI if soft tissue injuries or inflammation are suspected

Proper diagnosis is important because subtalar joint arthritis can sometimes mimic ankle arthritis or tendon disorders.

How Podiatrists Help Treat Subtalar Joint Arthritis

Podiatrists specialize in foot and ankle conditions and offer both conservative and surgical treatment options tailored to each patient’s needs.

Conservative Treatment Options

Many patients experience significant relief without surgery.

Custom Orthotics

Custom orthotics can help stabilize the hindfoot, reduce abnormal motion, and relieve pressure on the subtalar joint.

Bracing and Supportive Footwear

Ankle braces or supportive shoes can improve stability and decrease painful joint movement.

Anti-Inflammatory Medications

NSAIDs may help reduce inflammation and discomfort.

Activity Modification

Limiting high-impact activities and avoiding uneven terrain can reduce symptoms.

Physical Therapy

Stretching and strengthening exercises may improve function and reduce stress on surrounding structures.

Corticosteroid Injections

Targeted injections can help decrease inflammation and provide temporary pain relief.

Weight Management

Reducing excess body weight decreases stress placed on the foot and ankle joints.

When Surgery May Be Needed

If conservative care no longer provides relief, surgical treatment may be recommended.

Subtalar Joint Fusion

This procedure permanently joins the bones of the subtalar joint together to eliminate painful motion. While some side-to-side motion is lost, many patients experience substantial pain relief and improved quality of life.

Corrective Procedures

In some cases, additional procedures may be necessary to correct deformity or improve alignment.

A podiatric surgeon can determine the best surgical approach based on the severity of arthritis and the patient’s activity level.

Why Early Treatment Matters

Ignoring subtalar joint arthritis can lead to worsening pain, deformity, and reduced mobility. Early diagnosis and treatment often help slow progression and maintain function for longer periods.

Patients who seek treatment early frequently achieve better outcomes with less invasive therapies.

When to See a Podiatrist

You should consider seeing a podiatrist if you experience:

• Persistent pain below the ankle
• Difficulty walking on uneven surfaces
• Swelling or stiffness in the hindfoot
• Chronic foot instability
• Pain that limits daily activities

Early evaluation can help identify the source of pain and prevent further joint damage.

Final Thoughts

Subtalar joint arthritis can significantly affect mobility and quality of life, but effective treatments are available. From custom orthotics and bracing to advanced surgical care, podiatrists are uniquely trained to diagnose and manage this condition.

If foot or hindfoot pain is interfering with your daily activities, a podiatrist can help create a personalized treatment plan to reduce pain, improve function, and keep you moving comfortably.

By: Dr. Yavor Geshev, DPM, FACPM, DABFAS, DABPM