Cervical Soft Disc Herniation Research Articles

Usefulness of rheumatology consultancy in situ: Analysis of a long-term experience

ObjectiveTo report the long-term experience of a rheumatologist consultant “in situ” (RCI) in a primary care centre (PCC). Material and methodsObservational retrospective study analysing the complete cohort of the patients seen by the RCI between 2013 and 2019. Rheumatology patients’ clinical characteristics and course of care were collected to estimate the diagnoses that were most likely to be monitored by a primary care physician (PCP). ResultsA total of 876 consultations were attended; 205 were men (23.4%) and 671 women (76.6%).Most of the consultations (280, 33.2%) were diagnostic. On 167 occasions (19.8%) therapeutic issues were analysed; in 47 (5.6%) therapeutic infiltrations were performed. Chronic patient control was applied in 163 subjects (19.3%). A request for tests not available to the PCP was the reason for the consultation in 154 situations (18.3%). The profile most likely to continue being monitored in the PCC is the patient with osteoarthritis (OR = .13, CI 95%: .02–.67), soft tissue rheumatism (OR = .006, 95% CI: .01–.45) or cervical disc herniation (OR = .13, 95% CI: .02–.66). Less likely to be monitored by PCP after being seen by the RCI were subjects with rheumatoid arthritis (OR = .03, 95% CI: .00–.24), other inflammatory arthropathies (OR = .36, 95% CI: .16–.80) or with polymyalgia rheumatica (OR = .19, 95% CI: .06-.64 ), and those in need of chronic disease monitoring (OR = .16, 95% CI: .07–.34). ConclusionsThe RCI makes it easier for the PCP to monitor patients with osteoarthritis, soft tissue rheumatism and cervical disc pathology.

Posterior cervical sequestrectomy via keyhole foraminotomy: a case series comparing microdiscectomy with endoscope assisted discectomy

To report the clinical outcomes of microdiscectomy (MD) and endoscope assisted discectomy (EAD) techniques via the posterior approach in patients with cervical disc herniations (CDHs). The data were obtained from retrospective review of the patient?s charts and the latest follow-up examination. A total of 83 cases with CDH who were treated by posterior cervical discectomy (PCD), between 2010 and 2019, were reviewed. MD was used in 42 patients (male: 20, female: 22) with a mean age of 51.1 years. In MD group, all patients had pain, and 26 of them had additional weakness. Visual analogue scale (VAS) neck score was 7.72, VAS arm score was 8.83; PROLO score was 7.41. EAD was used in 41 patients (male: 26, female: 15) with a mean age of 38.7 years. In EAD group, all patients had pain, and 20 of them had additional weakness. VAS neck and arm scores were 7.75, and 8.72, respectively; PROLO score was 7.44. Mean follow-up time was 24.7 months. The scores at the latest exam are as follows: in MD group, VAS score for neck was 2.32, for arm 1.11; PROLO score was 9.58; in EAD group, VAS score for neck was 2.18 and for arm 0.97; PROLO score was 9.66. Both surgical techniques were success with statically significance (p?0.05) according to the scores.The techniques were equally effective while postoperative VAS (p > 0.412) and PROLO (p > 0.980) scores were similar in both groups. Both approaches are effective for selected patients with soft cervical disc herniation in which settled lateral location. Both techniques allow working with two handle, therefore facilitating the gentle manipulation that can obtain for avoiding hazardous effect to spinal cord and nerve root.

Percutaneous Endoscopic Cervical Discectomy Versus Anterior Cervical Discectomy and Fusion: A Comparative Cohort Study with a Five-Year Follow-Up.

Percutaneous endoscopic cervical discectomy (PECD) is an effective minimally invasive surgery for soft cervical disc herniation in properly selected cases. The current gold standard is anterior cervical discectomy and fusion (ACDF). However, few studies have evaluated the outcome of PECD compared with ACDF. We compared the surgical results of PECD and ACDF. Data from patients treated with single-level PECD (n = 51) or ACDF (n = 64) were analyzed. Patients were prospectively entered into the clinical database and their records were retrospectively reviewed. Perioperative data and clinical outcomes were evaluated using the visual analogue scale (VAS), Neck Disability Index (NDI), and modified Macnab criteria. VAS and NDI results significantly improved in both groups. The rates of excellent or good results were 88.24% and 90.63% in the PECD and ACDF group, respectively. The revision rates were 3.92% and 1.56% in the PECD and ACDF group, respectively. Operative time, hospital stay, and time to return to work were reduced in the PECD group compared to the ACDF group (p < 0.001). The five-year outcomes of PECD were comparable to those of conventional ACDF. PECD provided the typical benefits of minimally invasive surgery and may be an effective alternative for treating soft cervical disc herniation.

Spontaneous Regression of the Sequestrated Cervical Discs: A Prospective Study of 70 Cases

The validity of conservative management in certain type of acute cervical disc herniation based on amelioration of brachialgia has been described previously. But, disappearance of radiculopathy secondary to spontaneous resolution of the disc material being demonstrated in control MRI has been sporadically reported as a case report or small series. Herein we will describe 70 carefully selected patients with acute mono-radiculopathy due to cervical soft disc herniation. These cases were enrolled in a prospective study for the possibility of their spontaneous resolution with time. For the possibility spontaneous resolution of the sequestrated disc material, periodic MRI was used. In parallel, pain intensity at the onset and its intensity at the time of its complete resolution were assessed via Visual Analogue Scale (VAS). Mixed-design repeated measures ANOVA and independent sample T-test were carried out to determine the effects of this kind of treatment on pain intensity and ultimate outcome of the patients. Surprisingly, spontaneous resolution of the sequestrated disc material was observed in control MRI, in all 70 recruited patients, in duration with mean of 5.71 ± 1.49 months. Furthermore, despite severity of the pain at the onset, amelioration of radiculopathy occurred with significant decrease in VAS score with initial intensity from mean of 9.30 ± 0.80 to mean of 0.90 ± 0.76, after disappearance of the offending disc material. The details of the current series which is the first prospective one in the literature might offer a strong clue about the validity of conservative management in certain type of acute cervical disc herniation. The current report may advocate the neurosurgeons to allow the nature to resolve its problem with its own alterations in due time in sequestrated cervical disc herniation’s in the absence of neurological deficit.

STITCHLESS Percutaneous Endoscopic Cervical Discectomy: Are We Moving Towards Day Care Discectomy Procedure?

Background:STITCHLESS percutaneous endoscopic cervical discectomy s[PECD] is safe, precise, targeted, and a complete endoscopic procedure to treat soft cervical disc herniation with unilateral radiculopathy. It allows direct visualization of herniated fragment and its removal, inspection of decompressed nerve root in an awake and aware patient. It reduces the risk related to general anesthesia and to the neurological structures. However, all the patients treated with PECD can be candidates for anterior cervical discectomy and fusion (ACDF). ACDF requires a longer period of stay, expense, and more risk to neurological structures and ultimately loss of the disc space by fusion.Materials and Methods:Twenty consecutively treated patients by sPECD over a period of 2 years with soft cervical disc herniation and unilateral radiculopathy were included in the study. PECD enables removal of offending fragment under vision and irrigation and ablation of inflammation with few complications. All patients were followed for minimum of 6 months with visual analog score (VAS) and neck disability index (NDI).Results:All treated patients had a good outcome in terms of pain relief (VAS) and functional recovery (NDI). One patient had episodes of cough lying in the supine position and another patient had transient hoarseness of voice, (both recovered).Conclusion:Potential benefits of sPECD include safety as it is done under local anesthesia, smaller incision, short hospitalization, fewer complications, avoidance of fusion, preservation of segmental motion, preventing the adjacent segment degeneration, and avoidance of the risk related to the hardware (nonunion and pseudarthrosis). sPECD is an effective treatment modality for soft cervical disc herniation.

Return to Sports After Cervical Total Disc Replacement

Total disc replacement (TDR) is typically indicated in young patients with a cervical soft disc herniation. There are few data on the activity level of patients after cervical TDR, in particular from young patients who are expected to have a high activity level with frequent exercising. The expectation is that returning to active sports after cervical TDR is not restricted. Fifty patients were treated with a monosegmental cervical TDR at our department between May 2006 and March 2012. Clinical status and radiographic parameters were evaluated preoperatively and during follow-up. In addition, information was gathered regarding neck disability index, pain, a questionnaire concerning athletic aspects, and a modified Tegner activity score. The study design was a prospective case series. All patients were treated with the Prestige artificial cervical disc for a single-level soft disc herniation with radiculopathy. The average age was 40 years, and the mean follow-up period was 53 months (range, 26-96). The median neck disability index during follow-up was 5, and median visual analog scale for pain was 2. Two professional athletes, 20 semiprofessionals, 24 hobby athletes, and 5 patients with a very low activity level were treated. The median time to resumption of sporting activity was 4 weeks after surgery. All professionals and semiprofessionals recovered to their previous activity level. All of the 20 hobby athletes recovered to resume their sport participation. The modified Tegner preoperative score was 4 and the postoperative score was 3.5 (P= 0.806). We found that cervical TDR did not prohibit sporting activities. All patients recovered and were able to take part in their previous activities at an appropriate intensity level.

311 Smith-Robinson Procedure With an Autologous Iliac Crest Bone Graft With and Without Caspar Plating as a Treatment for Soft Cervical Disc Herniation

311 Smith-Robinson Procedure With an Autologous Iliac Crest Bone Graft With and Without Caspar Plating as a Treatment for Soft Cervical Disc Herniation

The Actual Level of Symptomatic Soft Disc Herniation in Patients with Cervical Disc Herniation.

ObjectiveThe aim of this study was to predict the relationship between the symptomatic disc herniation level and the osteophyte level or decreased disc height in patients with cervical disc herniation.MethodsBetween January 2011 and December 2012, 69 patients with an osteophyte of the cervical spine underwent surgery at a single center due to soft cervical disc herniation. Data including soft disc herniation level, osteophyte level in the posterior vertebral margin, Cobb's angle, and symptom duration were retrospectively assessed. The patients were divided into three groups according to the relationship between the degenerative change level and the level of reported symptoms.ResultsAmong the 69 patients, 48 (69.6%) showed a match between osteophyte level and soft disc herniation level. Disc herniation occurred at the adjacent segment to degenerative osteophyte level in 12 patients (17.4%) and at both the adjacent and the osteophyte level in nine (13.0%). There was no significant difference in Cobb's angle or duration among the three groups. Osteophyte type was not significant. The mean disc height of the prominent degenerative change level group was lower than the adjacent segment level, but this was not significant.ConclusionSoft cervical disc herniation usually occurs at the level an osteophyte forms. However, it may also occur at segments adjacent to that of the osteophyte level. Therefore, in patients with cervical disc herniation, although a prominent osteophyte alone may appear on plain radiography, we must suspect the presence of soft disc herniation at other levels.

Clinical application of anterior percutaneous endoscopic cervical discectomy

Objective To evaluate the safety,feasibility,and clinical outcome of anterior percutaneous endoscopic cervical discectomy (PECD).Methods The study involved 28 patients undergone PECD.Visual analogue scale (VAS) and MacNab scale were recorded before operation and at 3 days,1,3,6,12 and 18 months after operation.In addition,MRI examination was conducted at postoperative l month,3 months and 12 months.After data collection,single-factor T test with SAS software was performed.Results Follow-up (range,18-24 months,mean 19 months) was achieved in 25 patients.When compared to the preoperative score,VAS and MacNab scale presented improvement at postoperative 3 days (P ＞ 0.05) and great improvement at postoperative 1,3,6,12,18 and 24 months (P ＜ 0.01).VAS and MacNab scale at postoperative 3 days presented statistical differences as compared to those at postoperative 3,6,12 and 18 months (P ＜0.05),but the differences were not statistically insignificant at postoperative 3,6,12,and 18 months (P ＞ 0.05).Moreover,VAS and MacNab scale showed significant improvement at postoperative 24 months as compared to those before operation (P ＜0.01) and those at postoperative day 3 (P ＜ 0.01).Conclusion Anterior PECD is effective in treatment of cervical soft or partial hard disc herniation. Key words: Spinal injuries ; Cervical vertebrae ; Intervertebral disk ; Percutanous endoscopic cervical discectomy

Clinical features and surgical results of cervical myelopathy caused by soft disc herniation.

ObjectiveThere are many causes of cervical myelopathy including trauma, degenerative conditions, tumors and demyelinating disorders. However, myelopathy caused by soft disc herniation might be seen rarely than the spondylosis caused by hard disc. Here, authors retrospectively analyzed the clinical features and results of cervical myelopathy caused by soft disc herniation.MethodsFrom March 2010 to December 2010, 134 patients with degenerative cervical spinal disease were treated with anterior cervical discectomy and interbody fusion. Among them, 21 patients with cervical myelopathy secondary to cervical soft disc herniation were analyzed. Their clinical features, preoperative and, postoperative clinical results were evaluated by Nurick Grade and Japanese Orthopaedic Association scale (JOA) retrospectively. Preoperative clinical features including duration of myelopathy, pain intensity and postoperative clinical results including improvement rate of myelopathy and radiculopathy were retrospectively analyzed by Nurick Grade and JOA scale. We also evaluated correlation between the duration of symptom, type of the disc herniation, pain intensity and clinical outcome.ResultsMean age was 49.7 and male was predominant. Gait disturbance with mild to moderate pain was most common symptom in clinical features. Severe pain was shown in only 9 cases, and the other 12 cases experienced mild to moderate pain. Mean duration of myelopathy was 1.18 month. The mean JOA scores were 11.22 before surgery and 14.2 after surgery. The mean Nurick grades were 2.78 before treatment and 1.67 after treatment. Neurologic status of mild or moderate pain group on preoperative state is worse than that of severe pain group. The patients with duration of myelopathy symptom (<1 month) showed lower clinical improvement rate than the patients with myelopathy over 1 month. Patients with median type of disc herniation showed poorer neurological status than those with paramedian type of herniation in preoperative state.ConclusionAuthors reviewed the clinical features and surgical outcome of the cervical myelopathy secondary to cervical soft disc herniation. We presumed that patients of more than one month of symptom duration, mild to moderate initial symptom would be related with better postoperative improvement rate.

Computed Tomography Fluoroscopy-Guided Selective Nerve Root Block for Acute Cervical Disc Herniation

To analyze the clinical outcomes of computed tomography (CT) fluoroscopy-guided selective nerve root block (SNRB) for severe arm pain caused by acute cervical disc herniation. The authors analyzed the data obtained from 25 consecutive patients who underwent CT fluoroscopy-guided SNRB for severe arm pain, i.e., a visual analogue scale (VAS) score of 8 points or more, caused by acute soft cervical disc herniation. Patients with chronic arm pain, motor weakness, and/or hard disc herniation were excluded. The series comprised 19 men and 6 women whose mean age was 48.1 years (range 35-72 years). The mean symptom duration was 17.5 days (range 4-56 days) and the treated level was at C5-6 in 13 patients, C6-7 in 9, and both C5-6 and C6-7 in 3. Twenty-three patients underwent SNRB in 1 session and 2 underwent the procedure in 2 sessions. No complications related to the procedures occurred. At a mean follow-up duration of 11.5 months (range 6-22 months), the mean VAS score and NDI significantly improved from 9 and 58.2 to 3.4 and 28.1, respectively. Eighteen out of 25 patients (72%) showed successful clinical results. Seven patients (28%) did not improve after the procedure, and 5 of these 7 underwent subsequent anterior cervical discectomy and fusion. CT fluoroscopy-guided SNRB may play a role as a primary conservative treatment for severe arm pain caused by acute cervical disc herniation.

Keyhole Approach for Posterior Cervical Discectomy: Experience on 84 Patients

Anterior cervical discectomy with or without fusion has been commonly used for cervical disc disease since the description by Smith and Robinson in 1958. In this report, surgical technique, advantages, and disadvantages of the posterior approach, known as the posterior keyhole laminotomy-foraminotomy, are reviewed and motion versus fusion surgery discussed. Between 1996 and 2004, the keyhole laminotomy-foraminotomy was performed on 84 patients suffering from lateral cervical soft disc herniation or osteophytes. All the procedures were performed under the surgical microscope. A high-speed drill was used for drilling the bone. In 49 patients (58%), soft disc herniation was removed, while in 35 patients (42%) there were osteophytes. Successful relief of radiculopathy symptoms was achieved in 80 patients (96%). In 4 patients the symptoms recurred. One patient (1.2%) developed kyphosis. The only complication observed intraoperatively was a partial root injury in one patient (1.2%). Mean hospitalization time was 48 hours. The posterior approach is particularly appropriate in patients whose root compression is located posterolaterally. Advantages of this surgery are minimal lamina resection, good visualization of the nerve root, postoperative early mobilization and minimal hospitalization. Microsurgery enables us to both preserve the motion of operated segment and avoid cervical instability.

Myelopathy Caused by Soft Cervical Disc Herniation : Surgical Results and Prognostic Factors

The purpose of this study was to investigate the surgical results and prognostic factors for patients with soft cervical disc herniation with myelopathy. During the last 7 years, 26 patients with cervical discogenic myelopathy were undertaken anterior discectomy and fusion. Clinical and radiographic features were reviewed to evaluate the surgical results and prognostic factors. The clinical outcome was judged using two grading systems (Herkowitz's scale and Nurick's grade). Male were predominant (4:1), and C5-6 was the most frequently involved level. Gait disturbance, variable degree of spasticity, discomfort in chest and abdomen, hand numbness were the most obvious signs. Magnetic resonance(MR) images showed that central disc herniation was revealed in 16 cases, and accompanying cord signal changes in 4. Postoperatively, 23 patients showed favorable results (excellent, good and fair) according to Herkowitz's scale. Anterior cervical discectomy and fusion effectively reduced myelopathic symptoms due to soft cervical disc herniation. The authors assured that the shorter duration of clinical attention, the lesser the degree of myelopathy and better outcome in discogenic myelopathy.

Indications &amp; Experience with Percutaneous Endoscopic Cervical Discectomy (PECD)w/wo B-twin Stabilization

Introduction: Percutaneous endoscopic cervical discectomy (PECD) could be considered as a good alternative to the standard anterior cervical discectomy and fusion (ACDF) in dealing with soft cervical disc herniation. However, this procedure cannot be applied for patients with cervical disc herniation accompanied by segmental instability. Recently developed WSH cervical BTwin can be used as an interbody spacer to achieve stability without open discectomy. The purpose of the study is to evaluate the efficacy of PECD and percutaneous cervical stabilization (PCS) with or without dynamic cervical stabilization. Materials and Methods: The cervical working channel endoscope (WSH endoscopy set, Karl-Storz, Germany) for PECD has a working cannula that has integrated high-resolution endoscope, illumination, and irrigation. Therefore it allows surgeons to selectively remove the herniated disc via a Holmium: Yttrium-Garnet-Aluminum (Ho: YAG) laser and microforceps under endoscopic visualization. The PCS procedure also follows that of PECD. Under the fluoroscopic guidance, the reduced 3.3 mm cylindrical implant is inserted into the intervertebral disc space. Once expanded, its octagonal shape and fins prevents implant migration. Therefore, it restricts the excessive movement between endplates and to re-establish balance of cervical curvature. Results: From January 2001 to October 2006, a total of 105 patients (M:F=62:43) were included in this study. Mean age was 44.13 years (range; 24-67 years) and mean follow-up period was 36.4 months (range; 2-70 months). The clinical outcome was evaluated according to the Macnab criteria. The surgical outcomes were excellent in 39 patients (37.1%), good in 49 patients (46.6%), fair in 4 patients (3.8%) and poor in 13 patients (12.3%), thereby indicating an 83.7% rate of favorable outcome. A total of 45 patients underwent PCS with cervical B-Twin at our hospital. Among these, 33 patients who were available for follow up were retrospectively reviewed for their clinical outcome. There were 18 male and 15 female patients with mean age of 46.9 years (range; 28-78 years). The preoperative mean VAS of neck pain and back pain were improved from 6.09 to 4.72 and 3.19 to 1.7, respectively. Mean ODI was improved from 47.82% to 14.46%. Based on the Macnab criteria, the surgical outcomes were excellent in 10 patients (30.3%), good in 18 patients (54.5%), fair in 2 patients (6.1%) and poor in 3 patients (9.1%), indicating a favorable outcome of 84.8%. There were two additional surgeries at the affected level or adjacent levels. The rate of return to work after surgery was 93.9%. Conclusion: The procedure of direct fragmentectomy and manual decompression by microforceps and thermal effect of Ho: YAG laser under direct endoscopic view is safe and effective for the treatment of soft cervical disc herniations. In our experience, there is a very low associated morbidity with a rapid recovery resulting in a significant saving on expenditure. Biomechanically and clinically, PCS has potential to treat the angular instability. This technique prevents postoperative kyphosis and maintains anterior structures and stability unlike the conventional open procedures. In order to firmly establish the efficacy of B-Twin for treating segmental instability, further study requires large-scale trial long term follow-up.

PMMA versus Titanium Cage after Anterior Cervical Discectomy - A Prospective Randomized Trial

Nonautologous interbody fusion materials are utilised in increasing numbers after anterior cervical disc surgery to overcome the problem of donor site morbidity of autologous bone grafts. This study investigates the performance of two nonautologous materials, the bone cement Polymethylmethacrylate (PMMA) and titanium cages. This prospective randomised trial, with assessment of the results by an independent observer, evaluates whether a Polymethylmethacrylate (PMMA) spacer or a titanium cage provides a better fusion rate around the implant and a better clinical outcome. Between 2000 and 2002, 115 patients with monoradicular cervical nerve root compression syndrome caused by soft cervical disc herniation were eligible for this study. Myelopathy, excessive osteophyte formation, and adjacent level degeneration were exclusion criteria. A block-restricted randomisation was applied. The 2-year clinical outcome served as the primary endpoint of the study. Clinical outcome was assessed according to the Odom scale by an independent observer at the follow-up examination. Preoperative, postoperative, and follow-up radiographs were taken. The study was completed by 107 patients (53 with PMMA and 54 with titanium cage). No significant difference between the two groups could be established with respect to the clinical outcome. In each group, 26 patients scored excellent. Good results were found in 19 PMMA patients and 16 titanium cage patients; satisfactory results were found in 8 PMMA patients and 9 titanium cage patients; bad results were found in 3 titanium cage patients. In 47 titanium cage cases (87%), fusion occurred radiologically as bony bridging around the implant. The fusion rate was significantly lower (p=0.011) in the PMMA group, with 35 cases (66%) united at follow-up. The radiological result of the titanium cage is superior to that of PMMA with respect to the fusion rate. Although the titanium cage achieves a better fusion rate, there is no difference between titanium cages and PMMA with respect to the clinical outcome.

Immediate Pain Improvement Is a Useful Predictor of Long-Term Favorable Outcome after Percutaneous Laser Disc Decompression for Cervical Disc Herniation

The purpose of this study was to evaluate the long-term clinical outcome of percutaneous laser disc decompression (PLDD) for cervical disc herniation and to identify factors affecting long-term favorable outcome. PLDD using the Ho:YAG laser has been regarded as an effective alternative for soft disc herniation. However, little is known about long-term favorable outcome parameters. We retrospectively reviewed the clinical and radiological data of 60 patients who underwent PLDD with laser-assisted spinal endoscopy (LASE) for contained cervical soft disc herniation from January 1998 to January 2000. The clinical outcome was measured using the Macnab criteria. Statistical analysis was performed using Fisher's exact test. Sex, age, operated level and location of disc herniation, amount of laser energy, and time for symptom improvement were selected as parameters. The mean follow-up period was 71.0 months (range, 59-83 months). The mean age was 45.7 years (range, 26-68 years), and the mean symptom duration was 13.0 months (range, 2-60 months). The Visual Analogue Scale (VAS) score was significantly improved from 7.9 preoperatively to 2.6 at the final follow-up (p < 0.001). At the final follow-up, 51 (85.0%) patients achieved a favorable outcome. Immediate (within 24 h) pain relief was achieved in 19 patients, and it was strongly related to long-term success (p = 0.006). The long-term clinical outcome of PLDD with LASE was fairly good, with a success rate of 85%. Immediate pain relief is a useful prognostic factor predicting favorable outcome following the procedure.

Percutaneous endoscopic cervical discectomy for discogenic cervical headache due to soft disc herniation

A discogenic cervical headache is a subtype of cervicogenic headache (CEH) that arises from a degenerative cervical disc abnormality. The purpose of this study was to evaluate the clinical outcome of percutaneous endoscopic cervical discectomy (PECD) for patients with chronic cervical headache due to soft cervical disc herniation. Seventeen patients underwent PECD for intractable headache. The inclusion criteria were soft disc herniation without segmental instability, proven by both local anesthesia and provocative discography for headache unresponsive to conservative treatment. The mean follow-up period was 37.6 months. Fifteen of the 17 patients (88.2%) showed successful outcomes based on the Macnab criteria. Pain scores on a visual analog scale (VAS) improved from a preoperative mean of 8.35 +/- 0.79 to 2.12 +/- 1.17, postoperatively (P < 0.01). The mean disc height decreased from 6.81 +/- 1.08 to 5.98 +/- 1.07 mm (P < 0.01). There was no newly developed segmental instability or spontaneous fusion on follow-up radiography. In conclusion, PECD appears to be effective for chronic severe discogenic cervical headache under strict inclusion criteria.

Factors predicting excellent outcome of percutaneous cervical discectomy: analysis of 111 consecutive cases.

Percutaneous cervical discectomy (PCD) has been developed as an effective treatment option for soft cervical disc herniation. However, no prognostic study of this procedure has yet been made. The purpose of this study was to evaluate the surgical outcome of PCD and to determine the factors predicting excellent outcome. A retrospective review was performed of 111 consecutive patients who underwent PCD with a mean follow-up period of 49.4 months (range, 29-64 months). Under local anesthesia, a percutaneous anterior approach was followed by discectomy with microforceps and endoscopic Ho:YAG laser. The surgical outcomes of the 111 patients based on the Macnab criteria were excellent in 52 patients (46.9%), good in 37 (33.3%), fair in 9 (8.1%), and poor in 13 (11.7%), thereby indicating a symptomatic improvement in 88.3% of the patients. In this study, the two major factors predicting an excellent long-term outcome were the symptom of radiating arm pain (P = 0.02) and the location of lateral disc herniation (P < 0.02). Proper patient selection remains critical for the success of this minimally invasive procedure.

Relationships between outcomes of conservative treatment and magnetic resonance imaging findings in patients with mild cervical myelopathy caused by soft disc herniations.

A retrospective follow-up study of conservatively treated patients with mild cervical myelopathy caused by cervical soft disc herniation. To investigate the outcome of conservative treatment for patients with mild myelopathy caused by cervical soft disc herniation and to evaluate usefulness of magnetic resonance findings in the prediction of the outcomes. Recent studies on conservative treatment for cervical soft disc herniation have focused mainly on radiculopathy, and not on myelopathy. Twenty-seven patients with mild cervical myelopathy secondary to cervical soft disc herniation were treated conservatively for more than 6 months by cervical bracing and restriction of daily activities. Of the 27 patients, 17 patients (Group A) underwent conservative treatment only and it was associated with improvement in their neurologic deficits, while the other 10 patients (Group B) ultimately underwent decompression surgery because of neurologic deterioration. Comparisons between the two groups were made in regard to JOA scores, patient satisfaction, and magnetic resonance findings, including location of the disc herniation (focal or diffuse in the sagittal plane, median or paramedian in the axial plane). The JOA scores were 13.6 +/- 1.6 in Group A and 14.1 +/- 1.6 in Group B before treatment, 14.9 +/- 1.0 and 12.9 +/- 2.1, respectively, at 3 months, and 16.2 +/- 0.8 and 16.0 +/- 1.2, respectively, at the final follow-up. The JOA scores at 3 months were significantly lower in Group B than in Group A. Satisfaction with the results of treatment at the final follow-up was reported by 77% of the patients in Group A and 90% in Group B. Focal-type herniation was present in 47% of the patients in Group A and 70% in Group B, while median-type herniation was diagnosed in 77% in Group A and 30% in Group B. Follow-up magnetic resonance imaging of the patients in Group A showed spontaneous regression of a herniated mass in 10 patients (59%). Diffuse-type herniations were more likely to regress spontaneously than focal-type herniations (78% vs. 37%). Conservative treatment is an effective treatment option for mild cervical myelopathy caused by cervical soft disc herniation. A good outcome can be expected in patients with a median-type and/or diffuse-type herniation on magnetic resonance imaging.

Posterior approach for soft cervical disc herniation: a neglected technique?

Background The ideal approach to the treatment of soft cervical disc herniation remains controversial. Recent reports emphasize several variations of anterior cervical approaches, including the introduction of instrumentation techniques. New issues have been raised and modern neurosurgeons seem to be less familiar with the posterior approach. The objective of this study was to analyze the results obtained by surgical treatment via a posterior approach of soft cervical disc herniation. METHOD Fifty-one patients who underwent laminectomy/flavectomy and disc removal for the treatment of soft cervical disc herniation in the period of 1990 to 1999 were analyzed retrospectively. Relief of pain and motor and sensory improvement were the criteria used to measure the success of the procedure. RESULTS Most of the patients presented with acute radiculopathy. Radicular involvement was as follows: 25 cases—C7 root, 19 cases—C6 root, 4 cases—C5 root, and 3 cases—C8 root. Total relief of pain was obtained in 49 of 51 patients (96%). Motor improvement was obtained in 35 of 46 patients (76%) and sensory improvement in 22 of 35 patients (62.8%) in the short term. The mean time of hospitalization was 3 days. There was no mortality and no morbidity. CONCLUSION The advantage of this method, in selected cases, over the classical anterior approach, is that there is no need for grafting, thus avoiding the additional pain and possible complications at the donor and receptor sites, while obtaining similar results.