Disc Disorders
Spinal discs act as cushions between vertebrae, allowing flexibility and shock absorption. A bulging disc happens when a disc extends beyond its normal boundary. Unlike a herniated disc, where the outer wall tears and the inner material leaks out, a bulging disc remains intact but protrudes outward, sometimes putting pressure on nearby nerves. At Desert Spine and Pain, we help patients in Phoenix and across Arizona understand whether a bulging disc is the true source of their pain — and how to treat it. Led by Dr. David L. Greenwald, M.D., FAANS, FACS, one of the nation’s top neurosurgeons, we provide expert care ranging from conservative therapy to minimally invasive surgical options when needed.
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Each disc has a tough outer ring (annulus fibrosus) and a soft inner core (nucleus pulposus). A bulging disc occurs when the disc flattens and expands outward, often due to degeneration. Many bulging discs cause no symptoms and are discovered incidentally on imaging. But when they press on nerves, they may cause pain, numbness, or weakness.
Age-related wear and tear – Most common cause
Degenerative Disc Disease – Ongoing breakdown of disc structure Read about Degenerative Disc Disease
Repetitive stress – Heavy lifting, twisting, or prolonged sitting
Trauma or injury – Accidents, falls, or sports injuries
Poor posture – Strain on spinal discs over time
Genetics – Family history of disc problems
Obesity – Added stress on the spine
Symptoms depend on the location of the bulge:
Cervical (neck) disc bulge – Neck pain, radiating arm pain, numbness, or weakness
Thoracic (mid-back) disc bulge – Local pain, stiffness, or radiating rib/chest pain (rare)
Lumbar (lower back) disc bulge – Back pain, buttock pain, sciatica (radiating leg pain), tingling, or weakness.
At Desert Spine and Pain, our diagnostic process includes:
Medical history & exam – To understand symptoms and triggers.
MRI – The best tool for identifying disc bulges and nerve involvement.
X-rays or CT scans – To rule out other structural problems.
Because not all bulging discs cause pain, accurate diagnosis is essential to avoid unnecessary treatments.
Rest and temporary activity modification
Medications (anti-inflammatories, muscle relaxants)
Physical Therapy to improve core strength and posture
Heat, ice, and ergonomic adjustments
Lifestyle changes (weight loss, posture correction, quitting smoking)
Epidural Steroid Injections to reduce nerve inflammation
Facet joint or trigger-point injections for associated pain
If symptoms persist or worsen, surgical options may include:
Microdiscectomy – Removes the portion of disc pressing on a nerve
Disc Replacement – Artificial disc preserves motion (in select cervical cases)
Lumbar Fusion – For severe degeneration or instability
Minimally Invasive Spine Surgery – Smaller incisions, quicker recovery
Mild bulges – May improve within 4–6 weeks with conservative care
Injection-based care – Relief may last months, often aiding rehabilitation
Surgery – MIS microdiscectomy recovery is often 6–12 weeks; fusion recovery may take longer
Nationally recognized neurosurgeon – Dr. Greenwald specializes in advanced disc surgery
Conservative-first approach – Surgery is only recommended when truly necessary
Comprehensive care – Diagnosis, non-surgical treatment, injections, and advanced surgery all under one roof
Compassionate support – Helping patients feel reassured every step of the way
No. A bulging disc protrudes outward without rupture, while a herniated disc involves a tear and leakage of disc material.
Yes. Many bulging discs improve with time, therapy, and lifestyle adjustments.
No. Most patients improve with conservative treatments and never need surgery.
Recovery varies. MIS microdiscectomy patients often return to light activity in weeks, while fusion requires several months.
We provide precision diagnosis, prioritize conservative care, and offer minimally invasive surgery when needed — led by one of the nation’s top neurosurgeons.
Dr. David L. Greenwald, MD
Neuro-Spine Surgeon
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