Numbness And Tingling In Leg: Causes And Treatments
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Numbness and Tingling in Leg

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Numbness and Tingling in Leg

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Numbness and tingling is usually a symptom of a nerve being compressed or pinched, either at the spine or along its path in the body.  A herniated disk is one of neck and back pain with symptoms radiating down the arm or leg.

What is a Herniated Disk?

Your spine is made up of 33 vertebrae (bones) that are stacked on top of one another. Between each vertebra is a cushion-like piece of cartilage called an “intervertebral disk.” Imagine the disk as a tire, with gelatin filling the hole in the tire. The rubbery outer part is called the “annulus,” and the gelatin is called the “nucleus.” When we’re young—under 30 years of age—the disk is made mostly of gelatin. As we age, we start to lose some of that gelatin. The disk becomes flatter and less flexible, making it easier to injure. In some cases, the gelatin can push out through a crack in the rubbery exterior and lead to a herniation (bulge) or rupture (tear). Herniated disks are most common in the neck (cervical spine) and low back (lumbar spine). In the low back, disks may become damaged by excessive wear and tear or an injury. Your risk for developing a herniated disk increases due to:
  • Age – most herniated disks occur in people who are 30 to 50 years of age as a result of age-related disk degeneration. Herniated disks are less common after the age of 50, however, because with aging there is less fluid to push out of the disk
  • Obesity – increased weight results in increased pressure on the disks
  • Occupation – jobs that are physically demanding and involve repetitive tasks such as lifting, pushing, pulling, and twisting place additional stress on the disks
  • Low levels of physical activity – people who are not physically active are less able to handle physical demands

Signs and Symptoms of a Herniated Disc

You might have mild to intense neck or back pain—or no pain at all. Herniated disks sometimes show up on the diagnostic images of people who have no symptoms. When the disk ruptures (“herniates”) and a portion of the disk pushes outside its normal boundaries, it can “pinch” or press on spinal nerves or the spinal cord. This condition is called “radiculopathy.” The pressure can lead to back pain or to pain, numbness, or weakness in the legs. The type and location of your symptoms depends on the location and the amount of pressure on the nerves:
  • If you have a herniated disk in the cervical spine, you may have pain, tingling, numbness, weakness, or any combination of these symptoms in the arm, shoulder, or neck
  • If you have a herniated disk in the lumbar spine, you may have pain, tingling, numbness, weakness, or any combination of these symptoms in the back, buttocks, or legs; most likely, your symptoms will be on only one side of your body
Often, symptoms from herniated disks are made worse by certain activities or positions. If you have a herniated disk in the lumbar spine:
  • Pain may get worse with sitting, bending, and reaching
  • Pain may be worst first thing in the morning and after staying in one position for a long time
  • You may need to switch positions frequently
  • You may prefer to stand rather than sit
If you have a herniated disk in the neck, symptoms are often worse with prolonged sitting and when lying down.

How Is a Herniated Disc in the Low Back Diagnosed?

Your physical therapist will conduct a thorough evaluation that includes a review of your medical history and will use screening tools to determine the likelihood of a herniated disk. For example, the therapist will:
  • Ask you very specific questions about the location and behavior of your pain, weakness, and other symptoms
  • Ask you to fill out a body diagram to indicate specific areas of pain, numbness, and tingling
  • Perform tests of muscle strength and sensation to determine the severity of the pressure on your nerves
  • Examine your posture and observe how you walk and perform other activities
  • Measure the range of motion of your spine and your arms and legs
  • Perform special tests, such as the straight leg raise test or the crossover straight leg raise test, that help diagnose a herniated disk
  • Use manual therapy to evaluate the mobility of the joints and muscles in your spine
  • Test the strength of important muscle groups
If you have muscle weakness and loss of sensation or very severe pain, special diagnostic tests, such as magnetic resonance imaging (MRI), electromyography, or nerve conduction studies may be needed. Physical therapists work closely with physicians and other health care providers to make certain that you receive an accurate diagnosis and appropriate treatment. Research shows that in all but the most extreme cases (usually involving muscle weakness or high levels of pain), conservative care, such as physical therapy, has better results than surgery. If your physical therapist’s evaluation indicates that there are no signs of nerve compression and you don’t have any signs of muscle weakness or numbness, treatment can begin right away. If the evaluation indicates that the herniated disk might be compressing the nerves, your therapist will consult with a physician specialist.

How Can a Physical Therapist Help Treat a Herniated Disc?

Your physical therapist’s overall purpose is to help you continue to participate in your daily activities and life roles. The therapist will design a treatment program based on both the findings of the evaluation and your personal goals. Your treatment program most likely will include a combination of exercises.
Your therapist will design:
  • Exercises that involve specific movements to relieve nerve pressure and decrease pain and other symptoms, especially during the early stages of treatment
  • Stretching and flexibility exercises to improve mobility in the joints and the muscles of your spine, arms, and legs—improving motion in a joint can be key to pain relief
  • Strengthening exercises—strong trunk muscles provide support for your spinal joints, and strong arm and leg muscles help take some of the workload off those joints
  • Aerobic exercise, which has been proven to be helpful in relieving pain, promoting a healthy body weight, and improving overall strength and mobility—all important factors in managing a herniated disk
This might sound like a lot of exercise, but don’t worry: research shows that the more exercise you can handle, the quicker you’ll get rid of your pain and other symptoms. Your physical therapist also might decide to use a combination of other treatments:
  • Manual therapy to improve the mobility of stiff joints and tight muscles that may be contributing to your symptoms
  • Posture and movement education to show you how to make small changes in how you sit, stand, bend, and lift—even in how you sleep—to help relieve your pain and help you manage your condition on your own
  • Special pain treatments—such as ice, traction, and electrical stimulation—to reduce pain that is severe and not relieved by exercise or manual therapy
Once your pain is gone, it will be important for you to continue your new posture and movement habits to keep your back healthy. References: http://www.moveforwardpt.com/SymptomsConditionsDetail.aspx?cid=79ef56df-780e-4ad0-963f-94364404125a#.VZB6NvlViko

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Ron Miller

RON MILLER, DPT, OCS, Cert DN


Doctor of Physical Therapy | Board Certified Orthopaedic Physical Therapy Clinical Specialist | Post-Doctoral Orthopaedic Residency Trained | Certified in Dry Needling | Titleist Performance Institute Certified

Dr. Ron Miller is the owner and founder of Pursuit Physical Therapy. His core belief is that it is not about the physician, the physical therapist, or the insurance company: it is about what is truly best for the patient. Dr. Miller started...

Carey Rothschild

CAREY ROTHSCHILD, DPT, OCS, SCS, CSCS, CKTP


Doctor of Physical Therapy and Assistant Professor at the University of Central Florida | Board Certified Orthopaedic Clinical Specialist
| Board Certified Sport Clinical Specialist

Dr. Carey Rothschild is an Assistant Clinical Professor in the Doctor of Physical Therapy Program at the University of Central Florida.  Dr. Rothschild earned a Bachelor of Health Science in Physical Therapy in 1999 from the University of Florida and a Doctor of Physical Therapy from Boston University in 2005...

Carey Rothschild
Michael Fabrick

MICHAEL FABRICK, DPT, Cert. DN


Doctor of Physical Therapy | Certified in Dry Needling | Pursuit Sports Performance Specialist | Professional Tennis Tour Physical Therapist

Dr. Michael Fabrick was born and raised in Hanover, Pennsylvania and attended Slippery Rock University where he received his Bachelor’s degree in Exercise Science. He then went on to receive his Doctorate Degree in Physical Therapy in May of 2020. During his final tenure as a Doctoral intern, he trained underneath Todd Ellenbecker, who is one of the world’s leading experts on shoulder rehabilitation and is the Vice President of Medical Services for the ATP World Tour...

MARYANN DANIELS, PT, MCMT, IDN


Physical Therapist | Dry Needling Certified | Mastery Certified In Manual Therapy | Pelvic Floor And Post Partum Specialist

Maryann was originally born in Connecticut but moved to Florida with her family at the age of 9 and she grew up in Jupiter, Florida. She then went to college at the University of Central Florida...

Kayla Cook, DPT, HSP, CSCS


Doctor of Physical Therapy | Hesch Sacroiliac Practitioner | Certified Strength And Conditioning Specialist | Ehlers-Danlos Syndrome Specialist | Volleyball Specialist

Dr. Kayla Cook was born and raised in Northern California and received her undergraduate degree in Kinesiology from California State University in Sacramento.  She then received her Doctorate in Physical Therapy from The University of St Augustine for Health Sciences...

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  • See Why Treatment Needs To Be Individualized, Not Standardized...So You Get Faster Results
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