Cauda Equina ; Humans ; Lumbar Vertebrae/diagnostic imaging* ; Spinal Stenosis/diagnostic imaging*

OBJECTIVE: To summarize the clinical manifestations, imaging characteristics and experience of surgical treatment of tethered cord syndrome (TCS) accompanied by dermal sinus tract (DST) in adulthoods. METHODS: The authors retrospectively analyzed a series of 25 adult patients with TCS due to DST that were surgically treated under microscope from September 2010 to October 2019. There were 10 males and 15 females with an average age of 29.7 years (rang, 18-48 years). Characterized cutaneous malformation and dermal sinus were found in the lumbosacral region in all the 25 patients. Clinically, all the patients presented with chronic back and lower-extremity pain, numbness and weakness of lower limbs, and bowel and bladder dysfunction. Two cases were admitted to the emergency room with acute infectious cerebral spinal fluid (CSF) leakage complicated with meningitis. According to magnetic resonance imaging (MRI) images, the subdural course of DST whose traction of the spinal cord, the location of the conus medullaris, the presence of subdural lesions, and the diameter of the internal filum terminale were evaluated. The surgical procedure included separating and excising of the DST, section of the internal filum terminale, detethering of the TCS, and reconstruction of the dural sac under microscopy. The patients remained in prone position in 7 days postoperation. RESULTS: MRI showed that the position of the conus medullaris was lower than the level of lumbar 2 vertebrae, and the distal part of the DST entered the subdural stretched part of the spinal cord, to constitute one of the factors of TCS in all the 25 patients. Twenty patients had fatty infiltration of internal filum terminale and another patient had thickened (approximately 5 mm in diameter) internal filum terminale resulting in tightening the conus medullaris. A total of 25 operations were performed including completely dissection and resection of the DST through the skin down to the subdural space, section of the internal filum terminale, detethering of the TCS, and the subdural dermoid cysts were removed in two patients. There were no postoperative complications. The postoperative pathology was consistent with the structure of the DST and internal filum terminale. The local pain was relieved, and the lower-extremity weakness and bowel and bladder dysfunction were gradually relieved postoperatively. The period of follow-up ranged from 3 months to 9 years (mean, 3.9 years). The neurological function of all the patients was intact, and MRI showed that the physiological curvature of the thoracolumbar spine remained normal. There was no recurrence of TCS observed during the follow-up. CONCLUSION The adult TCS accompanied with DST is characterized by typical cutaneous malformation in the lumbosacral region and tethering of the spinal cord. The patients are usually combined with internal filum terminale enlargement tightening of conus medullaris as well. The surgical treatment including totally resection of the DST and section of the internal filum terminale to detethering the TCS at the same time under microscopy. The outcome of surgical treatment is satisfactory.
Male ; Female ; Humans ; Adult ; Spina Bifida Occulta/surgery* ; Retrospective Studies ; Neural Tube Defects/surgery* ; Cauda Equina/surgery* ; Spinal Cord/abnormalities* ; Magnetic Resonance Imaging/methods* ; Pain

OBJECTIVE: To summarize the characteristics of sacral cysts containing fila terminale and to explore the surgical treatment methods. METHODS: The clinical features, imaging characteristics and surgical methods of 21 cases of sacral cysts containing fila terminale from July 2010 to March 2017 were reviewed and analyzed. Lumbosacral and perineal pain, weakness of the lower limbs and bladder and bowel dysfunction were the common clinical symptoms. MRI showed that the cysts located in the sacral canal. The lower T1 and higher T2 signals were found on MRI. There were fila terminale within the cysts which tethered the spinal cord. No enhancement was visible within the lesion. The key steps of operation included the resection of the cyst wall, the cutting off of the fila terminale, the release of the tethered cord and the reconstruction of the cisterna terminalis. RESULTS: The total and subtotal resections of cyst walls were achieved in 14 and 7 cases, respectively. The fila terminales were separated and cut off in all the cases, and the tethered cords were released completely. The reconstructions of the cisterna terminalis were accomplished in all the cases. There was no new-onset dysfunction except for 7 cases of mild numbness around anus postoperatively. Pathological examinations confirmed that the cyst wall was fibrous connective tissue, and hyperplasia of fibrous tissue and/or adipose tissue was found within the thickened fila terminale. The lumbosacral and perineal pain disappeared. The weakness of the lower extremities and the bladder and bowel dysfunction gradually improved. The period of follow-up ranged from 3 months to 7 years (average: 2.25 years). The spinal function of all the patients restored to McCormick grade Ⅰ. Only 1 case encountered recurrence of cyst. CONCLUSION The sacral cysts containing fila terminale are rare. The common symptoms include lumbosacral and perineal pain and symptoms of tethered cord. MRI is helpful to the diagnosis, which shows the signal of cerebrospinal fluid and the fila terminale in the cyst as well as tlow-placed conus medullaris. Microsurgery should remove the cyst wall, cut off the fila terminale, release the tethered cord and reconstruct the cisterna terminalis.
Cauda Equina ; Cysts ; Humans ; Magnetic Resonance Imaging ; Neoplasm Recurrence, Local ; Neural Tube Defects ; Spinal Cord

STUDY DESIGN: A retrospective comparative analysis of 64 patients with cauda equina syndrome (CES), who underwent either decompression alone (NF) or fusion (F) surgery. PURPOSE: We compared the outcomes and timing effects. OVERVIEW OF LITERATURE: CES can cause loss of autonomic control of vesicular function and lower limb neurological deficits. Prompt diagnosis and emergency surgery markedly improve outcome. Although decompression only is a mainstream technique, there is guarded recovery of vesicular dysfunction. Decompression ventrally in a narrow window requires manipulation of neural tissue in an already jeopardised critical canal and may accentuate irreversible damages. In F surgery, the adequate exposure leads to a lower neural manipulation. METHODS: Until January 2008, we treated CES with decompression (laminectomy and/or discectomy). However, from that month forward, all our single-level CES patients have received a fusion operation. In this study, characteristic categorical variables and outcomes were analysed. RESULTS: In a retrospective analysis of 64 patients, NF (n=37) and F (n=27) who received treatment, we found that both groups improved significantly on follow-up in all objective parameters. Although, the comparison of clinical and functional outcome data between the two groups was statistically insignificant, the average value of objective outcome such as vesicular function, low back pain (LBP), and complications was better for patients in F group compared with NF group. However, the patient satisfaction for the F group was also lower, in view of their residual symptoms and disabilities. Contrary to common perceptions, we found that the timing of surgery does not influence the recovery rate for either approach. CONCLUSIONS: Although both the techniques appear to be equally effective, the fusion approach overall showed a definite edge over non-fusion, with respect to reduced incidence of iatrogenic dural tears, LBP, and overall outcome, even despite the lower patient satisfaction.
Cauda Equina ; Constriction, Pathologic ; Decompression ; Diagnosis ; Diskectomy ; Emergencies ; Follow-Up Studies ; Humans ; Incidence ; Intervertebral Disc Displacement ; Low Back Pain ; Lower Extremity ; Patient Satisfaction ; Polyradiculopathy ; Retrospective Studies ; Spinal Fusion ; Tears

Spinal adhesive arachnoiditis is an inflammation and fibrosis of the subarachnoid space and pia mater caused by infection, trauma, spinal vascular anomalies, and iatrogenic (surgery and/or puncture). Adhesive arachnoiditis develops various symptoms and signs (gait disturbances, radiating pain, paralysis, and incontinence). On the other hand, adhesive arachnoiditis associated with cauda equina syndrome has not been reported in Korea until now. The authors experienced cauda equina syndrome caused by adhesive arachnoiditis of the lumbar spine with satisfactory results following decompression. We report this case with a review of the relevant literature.
Adhesives ; Arachnoid ; Arachnoiditis ; Cauda Equina ; Decompression ; Fibrosis ; Hand ; Inflammation ; Korea ; Paralysis ; Pia Mater ; Polyradiculopathy ; Spine ; Subarachnoid Space

BACKGROUND: The incidence of cardiovascular and neurovascular diseases has been increasing with the aging of the population, and antiplatelet drugs (APDs) are more frequently used than in the past. With the average age of spinal surgery patients also increasing, there has been a great concern on the adverse effects of APD on spine surgery. To our knowledge, though there have been many studies on this issue, their results are conflicting. In this study, we aimed to determine the influence of APDs on spine surgery in terms of intraoperative bleeding and postoperative spinal epidural hematoma complication. METHODS: Patients who underwent posterior thoracolumbar decompression and instrumentation at our institution were reviewed. There were 34 APD takers (APDT group). Seventy-nine non-APD takers (NAPDT group) were selected as a control group in consideration of demographic and surgical factors. There were two primary endpoints of this study: the amount of bleeding per 10 minutes and cauda equina compression by epidural hematoma measured at the cross-sectional area of the thecal sac in the maximal compression site on the axial T2 magnetic resonance imaging scans taken on day 7. RESULTS: Both groups were homogeneous regarding age and sex (demographic factors), the number of fused segments, operation time, and primary/revision operation (surgical factors), and the number of platelets, prothrombin time, and activated partial thromboplastin time (coagulation-related factors). However, the platelet function analysis-epinephrine was delayed in the APDT group than in the NAPDT group (203.6 seconds vs. 170.0 seconds, p = 0.050). Intraoperative bleeding per 10 minutes was 40.6 ± 12.8 mL in the APDT group and 43.9 ± 9.9 mL in the NAPDT group, showing no significant difference between the two groups (p = 0.154). The cross-sectional area of the thecal sac at the maximal compression site by epidural hematoma was 120.2 ± 48.2 mm2 in the APDT group and 123.2 ± 50.4 mm2 in the NAPDT group, showing no significant difference between the two groups (p = 0.766). CONCLUSIONS: APD medication did not increase intraoperative bleeding and postoperative spinal epidural hematoma. Therefore, it would be safer to perform spinal surgery without discontinuation of APD therapy in patients who are vulnerable to cardiovascular and neurovascular complications.
Aging ; Blood Platelets ; Cauda Equina ; Decompression ; Hematoma ; Hematoma, Epidural, Spinal ; Hemorrhage ; Humans ; Incidence ; Magnetic Resonance Imaging ; Partial Thromboplastin Time ; Platelet Aggregation Inhibitors ; Prothrombin Time ; Spine*

PURPOSE: Sacral dimples are a common cutaneous anomaly in infants. Spine ultrasonography (USG) is an effective and safe screening tool for patients with a sacral dimple. The aim of this study was to determine the clinical manifestations in patients with an isolated sacral dimple and to review the management of spinal cord abnormalities identified with USG. METHODS: We reviewed clinical records and collected data on admissions for a sacral dimple from March 2014 through February 2017 that were evaluated with spine USG by a pediatric radiologist. During the same period, patients who were admitted for other complaints, but were found to have a sacral dimple were also included. RESULTS: This study included 230 infants under 6-months-old (130 males and 100 females; mean age 52.8±42.6 days). Thirty-one infants with a sacral dimple had an echogenic filum terminale, and 57 children had a filar cyst. Twenty-seven patients had a low-lying spinal cord, and only one patient was suspected of having a tethered cord. Follow-up spine USG was performed in 28 patients, which showed normalization or insignificant change. CONCLUSION: In this study, all but one infant with a sacral dimple had benign imaging findings. USG can be recommended in infants with a sacral dimple for its convenience and safety.
Cauda Equina ; Child ; Diagnostic Imaging ; Female ; Follow-Up Studies ; Humans ; Infant* ; Lumbosacral Region ; Male ; Mass Screening ; Skin Abnormalities ; Spinal Cord ; Spine ; Ultrasonography

PURPOSE: The filum terminale (FT) is a fibrous band that connects the conus medullaris to the posterior body of the coccyx. Considering the advances of ultrasonography (US) technology and improvements in the resolution of US images, we aimed to re-establish the US features of the normal FT in infants younger than 6 months of age. METHODS: We retrospectively reviewed 30 spinal US scans, stored as video clips. The internal structure of the FT and the marginal echogenicity of the FT were assessed, and transverse and longitudinal US were compared. RESULTS: On US, a central echogenic line was defined in 18 (60%) normal FTs; however, there was no visible internal structure in 12 cases (40%). The marginal echogenicity of the FT was hyperechoic in eight cases (27%) in comparison with the cauda equina and was isoechoic in 22 cases (73%). In differentiating the normal FT from the surrounding nerve roots, transverse US was superior in 18 cases (60%), while longitudinal US was superior in two cases (7%). CONCLUSION: On US, the central canal of the FT was defined in 60% of normal FTs. Hyperechoic marginal echogenicity and the use of transverse US were helpful in distinguishing the normal FT from the nerve roots of the cauda equina.
Cauda Equina* ; Coccyx ; Humans ; Infant ; Infant, Newborn ; Retrospective Studies ; Spinal Cord ; Ultrasonography

STUDY DESIGN: Case report. OBJECTIVES: We report a case of widespread lumbosacral subdural abscess in a patient who underwent bee venom therapy. SUMMARY OF LITERATURE REVIEW: Subdural abscess is rare, but has a poor prognosis. Therefore, prompt recognition and appropriate treatment are paramount. MATERIALS AND METHODS: A 54-year-old woman was hospitalized due to severe back pain. Two days previously, she had undergone bee venom therapy. The patient then visited the emergency room because of severe back pain. However, a paraspinal infection was not detected on enhanced magnetic resonance imaging (MRI). Six days after admission, the patient showed signs of meningeal irritation and an emergency cerebrospinal fluid analysis showed typical findings of bacterial meningitis. Although adequate antibiotic treatment was administered, 20 days after admission, the patient's symptoms became aggravated. Pachymeningeal enhancement, myelomeningitis, and subdural abscess compressing the cauda equina were found on enhanced MRI. Thus, laminectomy between L3–L4 and L5–S1 was performed, as well as subdural abscess drainage. Antibiotic agents were applied for 6 weeks after the operation, and resolution of the subdural abscess was identified on follow-up MRI. RESULTS: In this patient, lumbosacral subdural abscess occurred due to bee venom therapy. It was cured by adequate surgical and antibiotic treatment. CONCLUSIONS: Bee venom therapy can cause subdural abscess of the spinal cord. Even if it is a rare case, this possibility is worth consideration in the Korean medical context.
Abscess ; Back Pain ; Bee Venoms ; Bees ; Cauda Equina ; Cerebrospinal Fluid ; Drainage ; Emergencies ; Emergency Service, Hospital ; Female ; Follow-Up Studies ; Humans ; Laminectomy ; Magnetic Resonance Imaging ; Meningitis, Bacterial ; Middle Aged ; Prognosis ; Spinal Cord ; Spine

Spinal subarachnoid hematoma (SSH) following diagnostic lumbar puncture is very rare. Generally, SSH is more likely to occur when the patient has coagulopathy or is undergoing anticoagulant therapy. Unlike the usual complications, such as headache, dizziness, and back pain at the needle puncture site, SSH may result in permanent neurologic deficits if not properly treated within a short period of time. An otherwise healthy 43-year-old female with no predisposing factors presented with fever and headache. Diagnostic lumbar puncture was performed under suspicion of acute meningitis. Lumbar magnetic resonance imaging was performed due to hypoesthesia below the level of T10 that rapidly progressed after the lumbar puncture. SSH was diagnosed, and high-dose steroid therapy was started. Her neurological symptoms rapidly deteriorated after 12 hours despite the steroids, necessitating emergent decompressive laminectomy and hematoma removal. The patient’s condition improved after the surgery from a preoperative motor score of 1/5 in the right leg and 4/5 in the left leg to brace-free ambulation (motor grade 5/5) 3-month postoperative. The patient was discharged with no neurologic deficits. Critical complications such as SSH can be fatal. Therefore, a patient undergoing lumbar puncture must be carefully observed. A hematoma that convincingly compresses the spinal cord or cauda equina on imaging results requires early surgical decompression and hematoma removal.
Adult ; Back Pain ; Cauda Equina ; Causality ; Decompression, Surgical ; Dizziness ; Female ; Fever ; Headache ; Hematoma* ; Humans ; Hypesthesia ; Laminectomy ; Leg ; Magnetic Resonance Imaging ; Meningitis ; Needles ; Neurologic Manifestations ; Punctures ; Spinal Cord ; Spinal Cord Injuries ; Spinal Puncture* ; Steroids ; Walking