Sciatica After Disc Replacement

Sciatica Animation

Sciatica or sciatic neuralgia is a commoncondition in which one of the spinal nerve roots of the sciatic nerve is compressed resultingin lower back, buttock and leg pain. Sciatic nerve is a large nerve derived from 5 spinalnerve roots: L4, L5, S1, S2 and S3. It runs from the lumbar spine through the buttockdown the leg and the foot on the posterior aspect. There is one sciatic nerve on eachside of the body. Typically, only one side of the body is affected.A typical sciatica pain is described as a sharp shooting pain in the lower back, downthe buttock, thigh and leg on one side of the body. There may also be numbness, burningand tingling sensations. The pain can get

worse with sitting, moving, sneezing, or coughing.The patterns of pain depend on which nerve root is compressed, and follow the dermatomedistribution. The most common cause of sciatica is a herniatedspinal disc. The spinal disc is a soft elastic cushion that sits in between the vertebraeof the spine. With age, the discs become rigid and may crack, the gellike center of thedisc may protrude out and become a herniation outside the normal boundaries of the disc.Disc herniation presses on the nerve root as it exits the spine.In majority of the cases the condition resolves by itself after a few weeks of rest and conservativetreatment. Pain relief, nonsteroidal antiinflammatory

drugs and muscle relaxants may be prescribed.Stretching exercises and physical therapy may be recommended.Surgery may be needed if the pain doesn't go away after 3 months or more of conservativetreatments. The herniated disc may be removed in a procedure called discectomy. Or, in anotherprocedure called laminotomy, part of the bone of the vertebrae may be cut to make room forthe nerve.

ProDiscC Cervical Artificial Disc Replacement ACDF Fusion Orthopedic Spine Surgeon in Vail

the ProDiscC total disc replacementfrom Synthes Spine is a FDA approved spinal implant intended to reconstructthe diseased intervertebral disc in the cervical spine the ProDiscC is indicated for patientssuffering from intractable symptomatic cervical disc disease or SCDD at one level between C threeand C seven the ProDiscC is a ball and socketimplant that is composed of two cobalt chrome alloy endplates and apolyethylene insert

the polyethylene insert is affixed to thebottom endplate forming the ball and a polished dome in the top endplate forms the socket the implants components work togetherwith the surrounding spinal structures to provide stability and function the ProDiscC implant is secured tothe vertebral bodies above and below the disc space and held in place with two central keels all bone contacting surfaces of the ProDiscC implant

have a plasma sprayed titanium coatingto promote boney on growth providing longterm implant stability the ProDiscC is a zero profileimplant that does not contact soft tissue structures after it is implanted first an incision is made in the neck atthe location of the diseased disc the soft tissues are moved away from thefront of the diseased disc the surgeon then performs a discectomyand remobilization removing the diseased disc and releasingpressure on the surrounding nerves and

spinal cord once the disc space is cleared and thesegment is remobilized a trial is used to assess the implants size and positionwithin the disc space next keel channels are prepared in thevertebral bodies above and below the disc space the keel channels for the ProDiscCimplant can be prepared using either a milling technique or a chiseling technique

in the milling technique a milling bitis used to create the channels for the ProDisc C keel the chisel technique utilizes two chiselsto create the keel channels the primary chisel is inserted over thetrial and advanced into the vertebral bodies the step is repeated with a secondarychisel to remove any remaining bits of bone from the keel channels both the milling and chiselinginstruments

are designed to ensure that the finalplacement of the implant precisely matches the placement of the trial after the keel channels have beenprepared the vertebral bodies are ready to be implanted with the ProDisc C implant the implant is attached to the insertor the keels are aligned with the keelchannels and the implant is inserted all blockinto the vertebral bodies the instruments are removed and thefinal implant placement is confirmed

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