Effectiveness of Oral Prednisone in Improving Physical Functioning and Decreasing Pain in People With Sciatica (ACT FAST)
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ClinicalTrials.gov Identifier: NCT00668434 |
Recruitment Status :
Completed
First Posted : April 29, 2008
Results First Posted : April 28, 2015
Last Update Posted : April 28, 2015
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Condition or disease | Intervention/treatment | Phase |
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Sciatica | Drug: Prednisone Drug: Placebo | Phase 2 |
Sciatica is most often caused by a herniated disc in the lumbar region of the back and results from inflammation of the nerve roots as they exit the spine. It is a very common cause of back and leg pain, loss of function, and inability to work. Although sciatica is common, the effectiveness of current treatments is limited. Epidural steroid injections (ESIs), which can reduce inflammation of the nerve roots, are commonly used to decrease sciatica pain and restore normal function in patients. The exact effectiveness of ESIs, however, is unknown. If inflammation, and not compression, is the main cause of sciatica, it is reasonable to consider giving the steroid orally rather than by injection. If oral steroids prove effective, patients and clinicians will have access to a simple, inexpensive therapy that can be prescribed by primary care physicians without delay. This study will determine the effectiveness of the oral steroid prednisone in decreasing pain and improving function in people with sciatica.
Participants in this study will attend a screening visit at which they will answer questions about their health to determine eligibility, undergo a neurologic exam, and have a plain lower spine x-ray. An MRI of the lower spine will be performed for those who meet clinical eligibility. Participants whose MRI shows that a disc has ruptured in a specific way will be randomly assigned to receive either a 15-day course of prednisone capsules or a 15-day course of placebo capsules. Participants will take their assigned study medications in addition to their usual pain medications.
At Week 3, participants will return for a follow-up visit during which they will answer questions about their pain and general health and wellness. Participants who are still having considerable pain will be offered an epidural steroid injection (ESI) as a part of the study. At Week 6, participants will be called at home for a telephone interview and again answer questions about their general health and wellness; this telephone call will last about 20 minutes. If they continue to have considerable pain, they will be offered a second ESI as part of the study.
At Week 12, an interviewer will phone participants to determine if their pain has decreased and whether they have been able to return to their normal activities. The telephone contact will last about 20 minutes. Additional information about their back problems will be obtained from their medical records and from Kaiser Permanente's computerized medical records on their use of health care and medicines for back problems. At Week 24, participants will attend an evaluation visit at the Spine Clinic to assess their progress and symptoms. At Week 52 (1 year from randomization), participants will undergo a final telephone interview.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 269 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Triple (Participant, Care Provider, Investigator) |
Primary Purpose: | Treatment |
Official Title: | A Corticosteroid Taper for Acute Sciatica Treatment (The ACT FAST Study) |
Study Start Date : | November 2008 |
Actual Primary Completion Date : | September 2012 |
Actual Study Completion Date : | September 2013 |

Arm | Intervention/treatment |
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Experimental: Prednisone
Participants will receive a 15-day tapering course of prednisone capsules.
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Drug: Prednisone
For participants who weigh 50 kg or more, the prednisone dose will be 60 mg daily for 5 days, then 40 mg daily for 5 days, and then 20 mg daily for 5 days. For participants who weigh less than 50 kg, the dose will be 40 mg daily for 10 days, and then 20 mg daily for 5 days. |
Placebo Comparator: Placebo
Participants will receive a 15-day course of placebo capsules.
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Drug: Placebo
Placebo capsules will look the same as the study medication but will not contain active medicine. |
- Oswestry Disability Index, v2 [ Time Frame: Baseline, Week 3 follow-up ]The Oswestry Disability Index, v2 is a back-pain-specific measure of disability and functional status. It is measured on a 0-to-100 scale, with higher numbers indicating greater disability.
- Pain Numerical Rating Scale [ Time Frame: Baseline, Week 3 follow-up ]Ordinal scale of average level of pain as perceived by the participant over the prior 3 days; measured on a 0-to-10 scale, with higher numbers indicating greater pain.
- Oswestry Disability Index, v2 [ Time Frame: Baseline, Week 52 follow-up ]The Oswestry Disability Index, v2 is a back-pain-specific measure of disability and functional status. It is measured on a 0-to-100 scale, with higher numbers indicating greater disability.
- Pain Numerical Rating Scale [ Time Frame: Baseline, Week 52 follow-up ]Ordinal scale of average level of pain as perceived by the participant over the prior 3 days; measured on a 0-to-10 scale, with higher numbers indicating greater pain.

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Ages Eligible for Study: | 18 Years to 70 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Seeks care at a Kaiser Permanente clinic spine care specialist at the San Jose, Redwood City, or Roseville site
- Complains of low back pain and functionally incapacitating leg pain extending below the knee with a nerve root distribution
- Score of at least 20 on the modified Oswestry Disability Index
- Appears, in the opinion of the study physician, to be very likely to have a herniated lumbar disc
- MRI study confirms a herniated disc consistent with the signs and symptoms
Exclusion Criteria:
- Onset of sciatica symptoms occurred more than 3 months before study entry
- Cauda equina syndrome
- Active cancer
- Acute spinal fracture
- Currently taking oral steroids
- Diabetes mellitus and taking insulin or glycohemoglobin greater than 10%
- Systolic blood pressure greater than 180 mm Hg or diastolic blood pressure greater than 110 mm Hg
- Pregnant or breastfeeding
- Active peptic ulcer disease
- History of intolerance to steroid therapy
- Bleeding diathesis or anticoagulant therapy
- Ongoing litigation or workers compensation claim for low back pain or sciatica
- Underwent previous lumbar surgery
- Received epidural steroid injection (ESI) within the 12 months before study entry
- Unable to read or speak English
- Progressive or severe motor loss

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00668434
United States, California | |
Kaiser Permanente Northern California, Redwood City | |
Redwood City, California, United States, 94063 | |
Kaiser Permanente | |
Roseville, California, United States, 95661 | |
Kaiser Permanente Northern California, San Jose | |
San Jose, California, United States, 94119 |
Principal Investigator: | Harley Goldberg, DO | Kaiser Permanente San Jose Medical Center | |
Principal Investigator: | Andrew L. Avins, MD, MPH | Kaiser Permanente Division of Research | |
Principal Investigator: | William Firtch, MD | Kaiser Permanente Redwood City | |
Principal Investigator: | Mark Tyburski, MD | Kaiser Permanente, Roseville |
Responsible Party: | Kaiser Permanente |
ClinicalTrials.gov Identifier: | NCT00668434 |
Other Study ID Numbers: |
R01AR053960 ( U.S. NIH Grant/Contract ) R01AR053960 ( U.S. NIH Grant/Contract ) |
First Posted: | April 29, 2008 Key Record Dates |
Results First Posted: | April 28, 2015 |
Last Update Posted: | April 28, 2015 |
Last Verified: | April 2015 |
Back Pain Leg Pain |
Sciatica Sciatic Neuropathy Mononeuropathies Peripheral Nervous System Diseases Neuromuscular Diseases Nervous System Diseases Neuralgia Pain Neurologic Manifestations |
Prednisone Anti-Inflammatory Agents Glucocorticoids Hormones Hormones, Hormone Substitutes, and Hormone Antagonists Physiological Effects of Drugs Antineoplastic Agents, Hormonal Antineoplastic Agents |