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Endoscopic decompression for intraforaminal and extraforaminal nerve root compression

OBJECTIVE: The purpose of this study was to evaluate the outcome of endoscopic decompression surgery for intraforaminal and extraforaminal nerve root compression in the lumbar spine. METHODS: The records from seventeen consecutive patients treated with endoscopic posterior decompression without fusion for intaforaminal and extraforaminal nerve root compression in the lumbar spine (7 males and 10 females, mean age: 67.9 +/- 10.7 years) were retrospectively reviewed. The surgical procedures consisted of lateral or translaminal decompression with or without discectomy. The following items were investigated: 1) the preoperative clinical findings; 2) the radiologic findings including MRI and computed tomography-discography; and 3) the surgical outcome as evaluated using the Japanese Orthopaedic Association scale for lower back pain (JOA score). RESULTS: All patients had neurological findings compatible with a radiculopathy, such as muscle weakness and sensory disturbance. MRI demonstrated the obliteration of the normal increased signal intensity fat in the intervertebral foramen. Ten patients out of 14 who underwent computed tomography-discography exhibited disc protrusion or herniation. Selective nerve root block was effective in all patients. During surgery, 12 patients were found to have a protruded disc or herniation that compressed the nerve root. Sixteen patients reported pain relief immediately after surgery. CONCLUSIONS: Intraforaminal and extraforaminal nerve root compression is a rare but distinct pathological condition causing severe radiculopathy. Endoscopic decompression surgery is considered to be an appropriate and less invasive surgical option

Keywords : Adult,Aged,Aged,80 and over,Back Pain,Decompression,Surgical,diagnostic imaging,Diskectomy,Endoscopy,Female,Humans,Low Back Pain,Lumbar Vertebrae,Magnetic Resonance Imaging,Male,methods,Middle Aged,Muscle Weakness,Pain,pathology,Patients,Radiculopathy,Retrospective Studies,Spine,surgery,Tomography,X-Ray Computed,Treatment Outcome,, Decompression,Intraforaminal,Extraforaminal, permanent nerve block for back pain

Date of Publication : 2011 Mar 26

Authors : Doi T;Harimaya K;Matsumoto Y;Tono O;Tarukado K;Iwamoto Y;

Organisation : Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. toshidoi@ortho.med.kyushu-u.ac.jp

Journal of Publication : J Orthop Surg Res

Pubmed Link : https://www.ncbi.nlm.nih.gov/pubmed/21439083

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