Lumbar Radiculopathy: Proper Diagnosis Key to Effective Treatment of Back and Leg Pain
Physical Examination
You may be asked to stand, walk or lie down on the exam table during the physical
examination. In a lying position, your physician will raise each of your legs
to demonstrate flexibility and strength in your low back and legs. The following
table is a summary for the examination performed and possible findings:
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Nerve Root Involved
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Possible Exam Findings with Nerve Root Compression
|
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L2
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Decreased hip flexor strength |
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L3
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Decreased patellar reflex Sensation loss of the anterior thigh Weakness in quadriceps muscle Pain in the area of the anterior thigh |
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L4
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Sensory loss of the anterior lateral or medial foot Possible decreased patellar tendon reflex Weakness of the quadriceps Pain in the area of the anterior leg |
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L5
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Sensory loss in the dorsum of the foot and great toe Weakness of the anterior tibialis, great toe (extensor hallicus longus), and hip abductors Pain down the side of the leg |
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S1
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Decreased Achilles reflex Sensory loss of the lateral foot and the small toe Weakness of the gastrocnemius, gluteus maximus, plantar flexor, and great toe Pain down the back of the leg into the bottom or side of the foot |
Diagnostic Studies
To further determine the source of your symptoms, and to confirm your diagnosis,
your physician may request other tests such as an X-Ray or MRI (Magnetic Resonance
Imaging).
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MRI
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| X-RAY |
An X-Ray is used to show the bony anatomy of the spine. In an X-Ray, the physician
is looking for the alignment and integrity of the bony structures. Integrity
in this sense means no degeneration in the bone structures.
An MRI produces images of the soft tissues of the spine. Using an MRI, the physician
looks at the soft tissue structures such as the discs, ligaments, spinal cord,
and spinal nerves. The physician looks at the integrity of the discs themselves
for degeneration (dark in color because of loss of hydration), bulging or herniation
(where the disc contents protrude into the spinal canal and compress the nerves
or spinal cord). If there is a herniation present, the MRI helps the physician
determine if the nerves are being pinched or smashed by the herniated disc.
Treatment
Low back pain with lumbar radiculopathy is often treated conservatively. This
may include a combination of rest, medication, and a home exercise or structured
physical therapy program.
Surgery may be recommended if symptoms persist after conservative treatment.
These symptoms may include severe pain, increasing numbness, or weakness of
the legs. The decision for surgical intervention is often made when conservative
treatment has failed and the symptoms are interfering with your daily function
causing lifestyle changes such as an inability to work or participate in the
activities you enjoy.
Understanding Lumbar Radiculopathy
A combination of medical history, physical examination, and diagnostic testing
helps your physician understand your symptoms. It is important for you as the
patient to understand your symptoms, as well. Understanding your symptoms allows
you to seek treatment when appropriate. Your family physician is an excellent
source for initial assessment and treatment, followed by referral to a spine
specialist when necessary.
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