Foot Drop

Foot Drop: A Patient’s Guide to Understanding and Treatment

Foot drop is a general term for difficulty lifting the front part of the foot. If you have foot drop, the front of your foot might drag on the ground when you walk. To compensate, you may lift your knee higher than usual, as if you were climbing stairs (known as a "steppage gait").

Common Symptoms

• Inability to Lift the Foot: Difficulty pulling the toes toward the shin.
• Dragging of the Toes: Catching your toes on carpet or uneven surfaces.
• Numbness: Loss of sensation on the top of the foot or the outer side of the lower leg.
• Muscle Atrophy: Shrinking of the muscles in the leg used to lift the foot.
• Unilateral or Bilateral: It typically affects only one foot, but both can be involved depending on the cause.

Common Causes

Foot drop is a symptom of an underlying problem, not a disease itself.

• Nerve Injury: The most common cause is compression of the peroneal nerve (the nerve that controls the muscles that lift the foot). This can happen during hip or knee replacement surgery or from a herniated disc in the spine, or after back surgery.
• Muscle Disorders: Conditions like muscular dystrophy or polio.
• Neurological Disorders: Multiple sclerosis (MS), stroke, or Amyotrophic Lateral Sclerosis (ALS).

Conservative Treatment Options

In many cases, foot drop can be managed without major surgery, especially if the nerve damage is temporary.

• Bracing (AFOs): An Ankle-Foot Orthosis is a brace that fits into your shoe to hold your foot in a normal position. Advanced options like the Xtern AFO attach to the outside of the shoe for better comfort.
• Physical Therapy: Exercises to strengthen leg muscles and maintain the range of motion in your ankle.

Surgical Treatment: Ankle Fusion (IM Nail)

If foot drop is permanent and has led to severe instability or painful arthritis, your surgeon may recommend an Ankle Fusion (Arthrodesis). One of the most stable methods for this is using an Intramedullary (IM) Nail.

How it Works

The surgeon inserts a sturdy metal rod (the IM nail) through the heel and into the centers of the tibia (shin bone) and talus (ankle bone). Screws are then used to lock the rod in place, allowing the bones to grow together into one solid piece.

Why the IM Nail?

• High Stability: The rod is positioned in the center of the bone, providing maximum internal support.
• Compression: The device allows the surgeon to "squeeze" the bones together, which encourages faster and stronger bone fusion.
• Permanent Correction: It eliminates the "drop" by fixing the ankle at a permanent 90-degree angle, providing a stable platform for walking.

Patient Satisfaction and Outcomes

Research into ankle fusion via IM nail shows high levels of patient success, particularly for those who struggled with instability.

Recovery Expectations

• The First 6–10 Weeks: You will likely be non-weight-bearing (no walking on the foot) to allow the bones to begin fusing.
• The Long Term: Once fused, you will not be able to "flex" the ankle, but most patients walk with a nearly normal gait by using shoes with a slight "rocker" sole.

When to Contact Your Surgeon

If your foot drop is accompanied by sudden, severe back pain or a loss of bladder/belly control, seek emergency medical care immediately, as this may indicate a serious spinal issue.

Patient Tip: While the idea of a "fused" joint sounds intimidating, most patients find that a stable, pain-free ankle is much easier to walk on than a "floppy" or unstable foot.

Schedule an appointment with Dr Sandhu today to discuss your options!

2120 N. MacArthur Blvd
Irving, TX 75061
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