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骨科手术早知道103:脊柱侧弯矫形内固定术(Scoliosis Derotation with In...

 医不了人心 2017-03-15


  脊柱侧弯是脊柱异常的弯曲,大多数病例,尤其是那些青少年期发病的,似有一定的遗传基础。矫正脊柱侧弯通过包括沿着弯曲植入多个螺钉及钩,用内固定来减轻弯曲的角度。另外可能需要骨移植或骨移植材料对脊柱进行融合,使脊柱更挺直,外观上的弯曲更轻。



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Introduction(介绍)

Scoliosis is an abnormal curvature of the spine. The majority of cases, particularly those occurring in adolescents, tend to have a genetic basis. However, certain neuromuscular disorders, such as muscular dystrophy, can cause scoliosis. Additionally, asymmetric spinal disc degeneration can cause the spine to curve, resulting in a form or scoliosis that primarily affects adults. Correcting scoliosis usually involves placing multiple screws or hooks along the length of the curve and using instrumentation to decrease the curvature. Bone grafts or bone graft substitutes may be added to fuse the vertebrae in the straighter, less curved spine configuration.

  脊柱侧弯是脊柱异常的弯曲,大多数病例,尤其是那些青少年期发病的,似有一定的遗传基础。然而,某些神经肌肉疾病,比如肌营养不良,也会引起脊柱侧弯。另外,不对称性椎间盘退变也会引起脊柱弯曲,这种脊柱侧弯主要影响成人。矫正脊柱侧弯通过包括沿着弯曲植入多个螺钉及钩,用内固定来减轻弯曲的角度。另外可能需要骨移植或骨移植材料对脊柱进行融合,使脊柱更挺直,外观上的弯曲更轻。



Incision & Instrumentation (切口、内固定)

A long incision is made in the middle of the back. Once the spine is exposed, surgical instruments are used to prepare for the instrumentation. Holes are made in the pedicle of multiple vertebrae on both sides of the spine. Screws are placed in the drilled holes and metal rods are positioned between the screws and fastened in place. The rods are then rotated in a fashion that straightens the spine. The rod and screw instrumentation prevents the vertebrae from moving while the bone graft fusion takes place.

  在背部正中作一个长切口,在脊柱显露后,用手术器械准备内固定。在脊柱的两侧,在多个椎体的椎弓根部位钻孔,并拧入螺钉,在螺钉之间用金属棒连接固定在一起。金属棒塑形旋转,使脊柱变直。钉棒内固定可以在植骨融合的过程中防止椎体的移动。



Bone Graft (骨移植)

Bone grafting can be done with pieces of a patient’s own bone (autograft), processed bone from a bone bank (allograft), or a bone graft substitute (demineralized bone, ceramic extender, or bone morphogenetic protein). To harvest a patient’s own bone for grafting, a second incision is made over the back of the pelvis. Bone is removed from the iliac crest and placed along the prepared sites on the spine where the top layer of bone was removed for the fusion. The bone grafts eventually grow in place, fusing the spine and providing stability.

  植骨可来自患者自已的骨碎片(自体植骨),来自骨库的加工骨(同种异体骨)或骨移植材料(脱钙骨、多孔陶瓷或骨形态发生蛋白)。如果从患者身上取移植骨,往往在骨盆后方另外作一个切口。从髂棘上取骨,并放置于刚才准备好的部位,此处外层骨皮质已去除以利于融合。最终,骨头在此生长,将脊柱融合并提供额外的稳定性。




Summary (总结)

Surgical correction can reduce spinal curvature from scoliosis by over 50 percent. A brace is usually not necessary after surgery. If bone graft was removed from the pelvis, it is common to experience some pain from the site for a short period of time.

  手术矫正能减少脊柱侧弯50%以上的曲度。术后通常不需要支具。如果从骨盆取骨移植,术后短时间内往往有局部疼痛。


(胡佰文   



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