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Harrington rods were intended to provide a means to reduce the curvature and to provide more stability to a spinal fusion. Before the
Harrington rod was invented, scoliosis patients had their spines fused without any instrumentation to support it; such fusions required many months in plaster casts,
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As exemplified by Pecina and Dapic in the
European Spine Journal (February 2007), flatback syndrome is not inevitable and does not happen to every person with a low Harrington rod instrumented fusion – there are many people who have had Harrington rods for decades with no adverse
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of the lower back (i.e. the backwaist curve), the spine is straightened out into an unnatural position. At first, the unfused spinal segments compensate for the straightening effects, but eventually the discs degenerate and wear down. The patient then develops back pain, has difficulty standing
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Harrington rod instrumentation was used to treat instability and deformity of the spine. Instability occurs when the spine no longer maintains its normal shape during movement. Such instability results in nerve damage, spinal deformities, and disabling pain. Spinal deformities may be caused by
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but early results proved fusion as part of the procedure was mandatory, as movement of the unfused spine would cause the metal to fatigue and eventually break. The procedure required the use of a postoperative plaster cast or bracing until vertebral fusion had occurred.
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Flatback syndrome is a problem that develops in some patients treated with
Harrington rod instrumentation, where the rod extends down into lower part of the lumbar spine. Because the Harrington cannot follow the natural
293:"Harrington rod, a spinal instrument used in traditional scoliosis surgery - Information provided by Ann Arbor Spine Center - Southeast Michigan - Ypsilanti, Brighton, Chelsea, Novi, Ann Arbor"
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The device itself was a stainless steel distraction rod fitted with hooks at both ends and a ratchet and was implanted through an extensive
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233:. By far, the most common use for the Harrington rod was in the treatment of scoliosis, for which it was invented.
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upright, and experiences limitations when walking. Eventually, the problem requires surgery to realign the spine.
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20-year follow-up of
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if you can. Unsourced or poorly sourced material may be challenged and
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322:"Polio struck terror in Houston and across the nation"
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Surgical implant typically used to stabilise scoliosis
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Medscape – Modern
Posterior Thoracic Instrumentation
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and large curvatures could progress despite fusion.
245:spinal approach, the hooks being secured onto the
160:. Historically, this rod was implanted along the
180:The Harrington implant was developed in 1953 by
164:to treat, among other conditions, a lateral or
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360:Vol 16 No 2 Feb 2007 (subscription only)
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141:Harrington rods used in spinal fusion
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379:Orthopedic surgical procedures
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297:www.annarborspinecenter.com
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190:Baylor College of Medicine
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247:vertebral
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215:fractures
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