Anterior cervical discectomy and fusion versus posterior cervical foraminotomy in the treatment of brachialgia: the Leeds spinal unit experience (2008-2013).

BACKGROUND: The surgical management of cervical brachialgia utilising anterior cervical discectomy and fusion (ACDF) or posterior cervical foraminotomy (PCF) is a controversial area in spinal surgery. Previous studies are limited by utilisation of non-validated outcome measures and, importantly, absence of pre-operative analysis to ensure both groups are matched. The authors aimed to compare the effectiveness of ACDF and PCF using validated outcome measures. To our knowledge, it is the first study in the literature to do this. METHODS: The authors conducted a 5-year retrospective review (2008-2013) of outcomes following both the above procedures and also compared the effectiveness of both techniques. Patients with myelopathy and large central discs were excluded. The main outcome variables measured were the neck disability index (NDI) and visual analogue scores (VAS) for neck and arm pain pre-operatively and again at 2-year follow-up. The Wilcoxon signed-rank test and Student t-tests were used to test differences. RESULTS: A total of 150 ACDFs and 51 PCFs were performed for brachialgia. There was no differences in the pre-operative NDI, VAS neck and arm scores between both groups (p > 0.05). As expected, both ACDF and PCF delivered statistically significant improvement in NDI, VAS-neck and VAS-arm scores. The degree of improvement of NDI, VAS-neck and VAS-arm were the same between both groups of patients (p > 0.05) with a trend favouring the PCF group. In the ACDF group, two (1.3 %) patients needed repeat ACDF due to adjacent segment disease. One patient (0.7 %) needed further decompression via a foraminotomy. In the PCF group one (2.0 %) patient needed ACDF due to persistent brachialgia. CONCLUSIONS: We found both interventions delivered similar improvements in the VAS and NDI scores in patients. Both techniques may be appropriately utilised when treating a patient with cervical brachialgia.

Spinal neuroschistosomiasis.

We report a 20-year-old woman with a diagnosis of spinal neuroschistosomiasis that was confirmed histologically. Magnetic resonance imaging demonstrated an expanded, oedematous conus with intrinsic heterogeneous enhancement, which was initially thought to be a neoplastic lesion. This case demonstrates an alternative diagnosis to oncological lesions of the spinal cord which should be considered in patients who have recently travelled to endemic areas.

Comparison of acrylic and titanium cranioplasty.

INTRODUCTION: There are many indications for cranioplasty with an increasing incidence partly attributable to an increase in decompressive craniectomy following trauma and stroke. The aim of this study was to compare the survival of acrylic and titanium cranioplasties used in our department. MATERIALS AND METHODS: Retrospective cohort study of 126 patients who underwent cranioplasty between 1997 and 2007. A comparison was made between those with acrylic (n = 61) and titanium (n = 65) cranioplasties. There was no significant difference in age and length of time between craniectomy and cranioplasty between the two groups. The indications for titanium cranioplasty tended to be classified as 'high risk' indications including trauma and stroke. A higher rate of pre-existing infection was noted in the acrylic group. Mean follow-up was 97.2 and 34 months for acrylic and titanium cranioplasties respectively. RESULTS: Mean survival (95% confidence intervals) was 135 months (134-153) and 92 months (82-102) for acrylic and cranioplasty respectively. Out of 13 failures, only two were associated with pre-existing infection. Overall cumulative survival was better for acrylic cranioplasty although this difference did not reach statistical significance. DISCUSSION: Although survival of acrylic cranioplasty appears to be better than titanium plates, there is no statistical significance. Acrylic has the advantage of being able to be applied at the time of surgery without any planning and does not cause artefact on future imaging. Titanium cranioplasty is strong, light-weight and inert and can be fashioned in the pre-operative setting.

Cervical spinal glioblastoma multiforme in the elderly.

Spinal glioblastoma multiforme (GBM) is uncommon, and its diagnosis may be challenging. This is especially true in the elderly population. Best management strategy remains to be defined. The purpose of this report is to document this rare condition, increase awareness (as a potential differential diagnosis) and propose treatment options in the elderly; a review of the relevant literature is included. A biopsy may be beneficial in given circumstances as cervical spinal GBM carries a better prognosis compared with intramedullary metastasis.

Pilocytic astrocytoma of a spinal nerve root. Case report.

A case of pilocytic astrocytoma involving a spinal nerve root is reported. A 39-year-old woman presented with a 1-year history of progressive pain and numbness, predominantly in the S-1 dermatome. Magnetic resonance (MR) imaging revealed an intradural lesion at the tip of the conus medullaris. The intradural tumor was excised as was the sacrificed nerve root. Histological examination showed a pilocytic astrocytoma in which there were unusual features of calcification and ossification. At 3-year follow-up review MR imaging demonstrated no residual tumor. To the best of the authors' knowledge, this is the first case of a primary pilocytic astrocytoma, a tumor typically of central nervous system origin, arising from a spinal nerve root.

Surgical outcome for foot drop in lumbar degenerative disease.

Controversy exists regarding the timing and outcome of surgery for lumbar degenerative disease (LDD) associated with foot drop. In this work, we report the results of a retrospective observational study from our center. We had a sample size of 26 patients with a minimum follow-up of 6 months. Of the 26 patients, 88% improved, with complete recovery observed in 61%. Thus, our data support the view that there is good recovery from operative management of foot drop secondary to LDD. Adjusting for preoperative strength, preoperative duration of weakness was a significant predictor of extent of recovery (odds ratio = 0.93; 95% confidence interval 0.88 to 0.98; p = 0.019). The model explained 50% of the variance in outcome in this study.

A diagnostic dilemma: cervical myelopathy in the presence of chiari 1 malformation and multi-level cord compression in a 79-year-old woman.

Chiari 1 malformation (CM1) is an unusual finding in the elderly population. Presenting features can overlap with other conditions including cervical spondylotic myelopathy (CSM); a more prevalent pathology in this age group. We present a rare case of CM1 in a 79-year-old woman with concomitant CSM who made an excellent recovery following a combined foremen magnum decompression and C5 skip laminectomy.