About chronic exertional compartment syndrome
Muscles in the lower leg are grouped into compartments wrapped by tough tissue called fascia. During exercise, muscles swell with blood flow. In chronic exertional compartment syndrome, the fascia does not allow enough room, so pressure rises and causes pain, tightness, and sometimes numbness or weakness.
CECS is most common in runners, soldiers, and athletes in sports with a lot of running. It is often mistaken for shin splints, but its pattern is distinctive: symptoms come on at a similar time or distance each session and settle within minutes of stopping.
CECS is different from acute compartment syndrome, a surgical emergency after a serious injury. Severe, worsening leg pain after trauma, or pain that does not ease with rest, needs emergency care.
Common symptoms
- Aching, burning, or cramping in the lower leg that builds during exercise
- Symptoms that start at a predictable time or distance
- Relief within minutes of stopping activity
- Numbness or tingling in the foot during exercise
- Weakness in the foot, sometimes with foot slap, during exercise
- Symptoms in both legs in many cases
Common causes and risk factors
- Repetitive running or marching
- Muscle growth or increased training volume
- Individual differences in how stiff or tight the fascia is
How we diagnose it
Our physicians first take a detailed history and use diagnostic ultrasound to rule out other causes of exercise-related leg pain, such as stress fractures, tendon problems, and muscle herniation. Dr. Chen performs compartment pressure testing, measuring the pressure inside the affected compartments before and after exercise to confirm the diagnosis. Nerve or vascular testing may be added when symptoms suggest a nerve or artery problem.
How Propel treats chronic exertional compartment syndrome
We start by looking at training volume, running mechanics, footwear, and recovery. Some people improve with changes to running form, such as moving from a heel strike to a forefoot strike, or by shifting to different training. For others, symptoms return every time they run.
When CECS is confirmed and limits activity, Dr. Gruner performs ultrasound-guided fasciotomy, which releases the tight fascia through small incisions. Dr. Chen offers botulinum toxin injections into the affected muscles, a nonsurgical option that may lower pressure during exercise for some athletes, though evidence is still growing. Rehab and a gradual return to running follow either treatment.
What to expect at your visit
- 1.
We listen first
Your visit opens with a real conversation: how the problem started, what you have already tried, and the activity you want back.
- 2.
Exam and in-office ultrasound
A hands-on exam, then ultrasound at the exam table, often while you move, so your physician can see the tendon, joint, or nerve involved.
- 3.
A clear diagnosis and plan
You leave knowing what is wrong and what your options are, from strength-based rehab to procedures, and why we recommend each one.
- 4.
Treatment and follow-through
Most procedures happen here in the office. We coordinate with your physical therapist and check progress against the goals you set.
Questions about chronic exertional compartment syndrome
- How is CECS different from shin splints?
- Shin splints usually cause tenderness along the bone that can linger after exercise. CECS causes tightness, pain, or numbness in the muscle that builds during exercise and fades within minutes of stopping. Pressure testing helps tell them apart.
- What does compartment pressure testing involve?
- A thin needle connected to a pressure monitor is placed into the leg compartment after numbing the skin, usually under ultrasound guidance. Pressure is measured at rest and again after exercise that brings on your symptoms.
- How is ultrasound-guided fasciotomy different from traditional surgery?
- Ultrasound-guided fasciotomy releases the fascia through small incisions while the physician watches the tissue and nearby nerves and vessels in real time. It is done in an office setting with local numbing rather than a large open incision.