Neurologic deficit of endoscopic complications 최우진, 전기현, 김현성, 김관태 허리사랑병원.

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Presentation transcript:

Neurologic deficit of endoscopic complications 최우진, 전기현, 김현성, 김관태 허리사랑병원

Case data ( N= yrs – 2007 ) 허리사랑병원 PELD & PEID L1-24 L2-324 L3-495 L L5-S1387 total1023

Direct Neural Injury  upper level disc & far lateral disc & interlaminar approach 에서 발생될 수 있다.  초창기엔 scope view 없이 large forcep 사용 에서 위험성이 높았다.  dura tear 나 small forcep 에 의한 some root leaflet 의 손상이 수술중 발생한다면 일단 수술은 끝까지 마치고 판단한다.  Unexperienced period

Disc 5-1 Rt inferior PEID like transdural approach  Point: axillar 접근시엔 channel oblique tip 의 위치가 caudal-medial 방향으로 접근해야 함

far lateral disc 3-4, 5-1 Lt Point: oblique channel 이 round 보다 디스크제거가 더 용이하나 bleeding 으로 view 가 덜 좋고 Scope 시야내에 root 가 있을 수 있으므로 더 주의해야한다.

Interlaminar axillar trial of recurred disc L5-S1 Lt Point: wide laminectomy 의 revision 은 bone margin 따라 shoulder 로 접근해야한다.

Trial interlaminar app: Disc L4-5 Rt inferior sequestrated

Trial interlaminar app Recurred 4-5 Rt after open surgery Packing lateral exiting zone, medial pedicle

Trial to L3-4 PEID

1 st 36/M, disc 3-4 Lt inferior PEID preoppostop

2 nd 69/M, 3-4 Rt inferior PEID preoppostop

3 rd Foot drop after PEID L3-4 Rt  65/F  Rt thigh pain & gait disturbance agg 1 weeks Dx: disc 3-4 rt inferior spinal stenosis spondylolisthesis 3-4 Parkinson & DM medication 중임

X-ray & CT

MRI

Clinical course  Postop: Subside severe rt leg pain  POD #1 Rt ankle dorsiflex GO Rt knee flex GIV MRI 후 observation  POD #4 open decompression L3-4-5  두달입원하며 Walker 잡고 보행할정도 호전됬 으나 foot drop 은 dense 하게 지속됨

Preop postop#1 postop#4

Endoscopic view : L3-4 Rt

왜 neurologic deficit 발생했나 ?  Ischemia - pressure injury for root traction >> direct root inrury  Initial traction point – rupture site  Initial disc space decompression fail  Oblique channel tip – compression  Long continuous traction time  Indication fail : stenosis & listhesis Parkinson & DM

Risk of traction ischemia in PEID  Combined stenosis  Old age  Upper level  Adhesive root  Initial shoulder approach than axillar  Long continous traction without decompression  Preop. weakness or severe pain  Hard, thick disc  Root 밑으로 빵빵하고 pulsation 없을때 특히 주위

Prevention of traction injury in PEID  Intermittent traction  Initial decompression without channel traction ( probe, RF, punch, forcep 만 넣어서 먼저 제거함 )  More upper site traction if possible  Initial axillar decompression if possible  Wide opening of lig flavum  Upper level L3-4 이상은 bone 작업없이 자 제

Neurologic deficit of endoscopic lumbar discectomy Risk: 1. upper level disc 2. far lateral disc 3. severe compression disc Cause: Pressure injury > direct Method: pressure 가 전혀 없는 곳부터 channel & scope 보면서 target 를 피해서 접근해 들 어가 initial decompression 후 root pressure 풀 어 놓고 channel 접근하면 안전함.

Further trial of Endoscopic spine surgery is effective bone work & fusion 감사합니다.