1 Consultant Spine Surgeon, Department of Spine Surgery, Barts Health NHS Trust, London, UK. 2Complex Spine Fellow, Department of Spine Surgery, Barts Health NHS Trust, London, UK.
Abstract: Spondylolisthesis is a common finding in the adult patient but seldom requires surgical intervention. Up to 18% of the population show spondylolisthesis on spinal imaging with the vast majority requiring little or no treatment. This review explores the aetiology of spondylolisthesis, alongside key findings in the history and examination that should prompt referral, as well as presenting the evidence supporting surgical treatment. Spondylolisthesis affects patients at nearly every stage of life and understanding why and how to manage this common problem will aid in counselling patients and making the right referrals.
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• Surgical treatment for spondylolisthesis is rarely required.
• Risk factors depend on the patient's age and include specific athletic activities, trauma and degenerative changes to
the posterior elements.
• Examination findings can be normal.
• Surgical options include repair, decompression, and stabilisation of affected segments.
• Spondylolisthesis is a common incidental finding.
• Not every spondylolisthesis needs treatment.
• Uncontrolled pain is a valid reason for referral.
• Analgesia, physiotherapy, and injection therapy manage most cases successfully.
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1University of Ottawa, Neurosurgery, Ottawa Civic Hospital, Ottawa, ON. 2,3University of Toronto, Division of Orthopaedics, Department of Surgery; Holland Musculoskeletal Program and Division of Orthopaedic Surgery, Sunnybrook Health Sciences Centre, Toronto, ON.
Abstract: Degenerative conditions of the spine are a major cause of disability, and represent a large economic burden on the health care system. In this review, we have described some of the most common degenerative pathologies of the lumbar spine—low back pain, spinal stenosis, degenerative spondylolisthesis, lumbar disc herniation and cauda equina syndrome—and the diagnostic approach and immediate management from the perspective of the primary care physician. We have emphasized clinical pearls seen in these conditions and specific indications for surgical referral, as well as red flags that should prompt urgent referral for life-threatening entities, such as malignancy and infection.
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1. Evaluate for hip and knee joint pathology, and vascular pathology, especially in older patients presenting with unilateral radiating leg symptoms.
2. Spine surgery is more successful in treating leg dominant pain symptoms than back dominant mechanical pain symptoms.
3. Screen every patient presenting with a lumbar spine complaint for concomitant cervical and thoracic stenosis, in particular looking for evidence of cord compression (i.e. myelopathy). Be suspicious in patients with bilateral leg symptoms.
Clinicians should ensure that a focused history and a thorough physical examination is performed to help place patients with low back pain into several key categories: (a) nonspecific low back pain (Pattern I or II), (b) back pain potentially associated with radiculopathy leg symptoms (Pattern III) or leg claudication from structural spinal stenosis (Pattern IV), or (c) back pain potentially associated with another specific spinal cause (i.e. red flags). The history should also include assessment of psychosocial risk factors, which predict risk for chronic disabling back pain.3
Unless there are red flag symptoms or signs, routine imaging or other diagnostic tests in patients with acute nonspecific low back pain is not required.3
Diagnostic imaging and special investigations in patients with low back pain in the presence of severe or progressive neurologic deficits or when serious underlying conditions are suspected on the basis of history and physical examination.
Surgery can be helpful for patients with leg dominant symptoms (sciatica/radiculopathy, Pattern III) or leg claudication from spinal stenosis (Pattern IV). There is a limited role for surgery for back pain dominant symptoms in the absence of specific structural correlative pathology (i.e. Pattern I or II).3
Approximately 15% of patients with lumbar spinal stenosis will have concurrent cervical or thoracic canal stenosis. One must screen for the presence of upper motor neuron signs and symptoms. Degenerative lumbar stenosis always presents without upper motor findings but may occasionally have focal root compression signs.
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Stenosis in the Lumbar Spine: Diagnosis and Treatment
Teaser:
Charles D. Ray, MD, FACS, FRSH (Lond.), President, American College of Spine Surgery; President, International Spine Arthroplasty Society; Past President, North American Spine Society, Yorktown, VA, USA.
Stenoses, or nerve entrapment, can occur at several sites. The focus here is on lumbar spine segments. Compression by stenosis can exist wherever nerve tissue is protectively covered by bone or where thick ligaments are located adjacent to nerve. Overgrowth of bone by spurs is the most common cause of compression producing disability and pain. Neurologic changes are rare. Diagnostic radiological imaging is needed, sometimes aided by selective injections of medications. Due to the limitations of non-surgical treatment, surgical decompression is common with generally good results. Key words: spinal stenosis, vertebral bone spurs, claudication, surgical decompression, nerve injections.
