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Surgical treatment of sacral chordoma: prognostic variables for local recurrence and overall survival
62S
Proceedings of the BASS 2015 Bath Meeting / The Spine Journal 15 (2015) 50S–85S
tumours were Prostate (n518), Breast (n517), Lung (n514) and renal (n510). 35 patients were treated with chemotherapy and/or radiotherapy. OUTCOME MEASURES: Predicting patient survival. METHODS: Cox regression analysis and Nagelkerke’s R2 were used to compare the four different scoring systems as well as the impact of chemotherapy and/or radiotherapy on predicting patient survival. RESULTS: Our results are consistent with our previously published results in 2013. The OSRI and Tomita score were the most predictive with an R2 value of 0.21 and 0.23 respectively (P!0.0001). The R2 Values and Tomita both are within the confidence intervals mentioned in the initial study. Treatment with chemotherapy and/or radiotherapy did not predict survival in this cohort (P 5 0.942). The general condition score did not correlate as well with survival in this study as compared to the previous study. CONCLUSIONS: This study internally validates use of OSRI as a simple and reproducible method of predicting survival in patients with spinal metastases. CONFLICTS OF INTEREST: None. FUNDING SOURCES: None. http://dx.doi.org/10.1016/j.spinee.2014.12.066 Minimally invasive spine stabilisation for spinal metastatic lesions case series & review of complications B. Balain, A.K. Hamad, L. Vachtsevanos, A. Cattell, M. Ockendon, J.M. Trivedi; Robert Jones Agnes Hunt Orthopaedic Hospital BACKGROUND CONTEXT: Metastatic spinal lesions are treated for collapse related spinal pain and/or neurological compression. In the setting of reduced life expectancy, MISS would reduce morbidity compared with open surgery. PURPOSE: The aim of the study is to review the outcomes and complications of the use of MISS in patients with spinal metastasis. STUDY DESIGN/SETTING: This is a prospective case series of 52 consecutive patients with spinal metastasis treated by MISS. PATIENT SAMPLE: Data on primary tumour type and tumour scores from 52 patients treated by MISS. OUTCOME MEASURES: Karnofsky performance status (KPS), Frankel grading, blood loss, time to discharge and surgical complications were assessed. METHODS: Mann-Whitney test for significance. RESULTS: MISS fixation was performed without decompression in 46% patients, with an average blood loss of 70mls. MISS was combined with limited open decompression in 54% patients with an average blood loss of 190 mls. Decompression increased mean hospital stay by 6 days. Mean preoperative KPS was 54. At the time of discharge 42% improved, 50% remained the same and 8% worsened. 34% had neurological deficit at presentation; half of these had neurological improvement. 8% of patients required revision surgery for implant loosening at a mean follow up of 18 months. CONCLUSIONS: This is a safe and effective way to treat this difficult group of patients. Morbidity from surgery is reduced significantly, with reduced complications, allowing patients to spend their last few months or weeks with a better quality of life. CONFLICTS OF INTEREST: None. FUNDING SOURCES: None. http://dx.doi.org/10.1016/j.spinee.2014.12.067
Surgical treatment of sacral chordoma: prognostic variables for local recurrence and overall survival Peter Varga, Z. Sz€ overfi, Z. Gokaslan, C. Fisher, S. Boriani., M. Dekutoski, D. Chou, N. Quraishi, M. Fehlings, L. Rhines; Centre for Spinal Studies & Surgery, Queen’s Medical Centre, Nottingham BACKGROUND CONTEXT: Sacral chordomas (SC) are rare, locally invasive, malignant neoplasms. Despite surgical resection, adjuvant therapies, local recurrence (LR) is common and survival is poor.
PURPOSE: The objective of this study was to identify factors that have an impact on the overall (OS) and local recurrence-free survival (LRFS) of patients with SC. STUDY DESIGN/SETTING: We utilised the AOSpine Knowledge Forum Tumour multicentre ambispective database. PATIENT SAMPLE: This consisted of surgically treated SC cases were identified. OUTCOME MEASURES: Local recurrence and survival. METHODS: Cox regression modelling was used to assess the effect of several pre-, peri-, and postoperative variables on OS and LRFS. RESULTS: A total 167 patients with surgically treated SC were identified. The male/female ratio was 98/69 with a mean age of 57 (SD515) years at the time of surgery (18-89 years). The LR was 35% (n557), death occurred in 30% of patients (n550) during the study period (5 days to 16.2 years). The median OS was 6 years post-surgery, and LRFS was 4 years. In the univariate analysis, age (p!0.001) and preoperative motor deficit (p50.003) were significantly associated with poor OS, and nerve root sacrifice showed a trend towards significance (p50.088). Previous tumour surgery at the same site (p50.002), intralesional resection (p!0.001), and tumour volume (p50.030), were significantly associated with LR. In the multivariate models, age and motor deficit were associated with poor survival while previous surgery and intralesional resection were significantly related to LR. CONCLUSIONS: This study identifies two predictive variables for mortality (age and impaired motor function) and two for LR (previous tumour surgery and intralesional surgery) in surgically treated SC. CONFLICTS OF INTEREST: AO Spine Study. FUNDING SOURCES: AO Spine Study. http://dx.doi.org/10.1016/j.spinee.2014.12.068
A low cost spinal dural closure simulation for tomorrow’s spinal surgeons Kevin Agyemang, Deborah Ferguson; Institute Of Neurological Sciences, Southern General Hospital, Glasgow BACKGROUND CONTEXT: Simulated surgical training dates back to Andreas Vesalius (1514-1564), who trained his students to perform cadaveric human dissection. Cost and availability have diminished the contribution of hands-on cadaveric training in today’s curriculum. Modern simulators provide high-quality, time-effective training and may mitigate constraints on operative training arising from working-time restrictions. Sutured durotomy closure is a technically demanding surgical skill, with high-quality closure capable of averting cerebrospinal fluid leaks. We propose a low-cost dural closure simulation model as an adjunct to training in this fundamental skill. PURPOSE: To provide structured information on improvements in microsurgical skills following personalised instructed-simulator training. STUDY DESIGN/SETTING: Prospective, cohort intervention comparing pre- vs. post-training performance. METHODS: Twenty-eight neurosurgical trainees (year 1-8, Scotland) were assigned to instructed-simulator training on a durotomy closure model. Performance of a suture closure of a 5cm incision under a microscope was recorded. Pre- and post-training performance was evaluated by blinded raters for quality of closure, with a standardised tool. RESULTS: Significant differences in the ability of trainees to perform a high quality closure. Pre-training performance scores increased with seniority, with a steep learning curve. Improvement in performance was seen for most participants following training on the simulator. Most participants reported the model was valuable to practising transferable microsurgical skills and supported recording results in their training portfolio. CONCLUSIONS: Skill-specific simulated neurosurgical training can be implemented at a low cost. Our model by providing practice with feedback
Proceedings of the BASS 2015 Bath Meeting / The Spine Journal 15 (2015) 50S–85S
tumours were Prostate (n518), Breast (n517), Lung (n514) and renal (n510). 35 patients were treated with chemotherapy and/or radiotherapy. OUTCOME MEASURES: Predicting patient survival. METHODS: Cox regression analysis and Nagelkerke’s R2 were used to compare the four different scoring systems as well as the impact of chemotherapy and/or radiotherapy on predicting patient survival. RESULTS: Our results are consistent with our previously published results in 2013. The OSRI and Tomita score were the most predictive with an R2 value of 0.21 and 0.23 respectively (P!0.0001). The R2 Values and Tomita both are within the confidence intervals mentioned in the initial study. Treatment with chemotherapy and/or radiotherapy did not predict survival in this cohort (P 5 0.942). The general condition score did not correlate as well with survival in this study as compared to the previous study. CONCLUSIONS: This study internally validates use of OSRI as a simple and reproducible method of predicting survival in patients with spinal metastases. CONFLICTS OF INTEREST: None. FUNDING SOURCES: None. http://dx.doi.org/10.1016/j.spinee.2014.12.066 Minimally invasive spine stabilisation for spinal metastatic lesions case series & review of complications B. Balain, A.K. Hamad, L. Vachtsevanos, A. Cattell, M. Ockendon, J.M. Trivedi; Robert Jones Agnes Hunt Orthopaedic Hospital BACKGROUND CONTEXT: Metastatic spinal lesions are treated for collapse related spinal pain and/or neurological compression. In the setting of reduced life expectancy, MISS would reduce morbidity compared with open surgery. PURPOSE: The aim of the study is to review the outcomes and complications of the use of MISS in patients with spinal metastasis. STUDY DESIGN/SETTING: This is a prospective case series of 52 consecutive patients with spinal metastasis treated by MISS. PATIENT SAMPLE: Data on primary tumour type and tumour scores from 52 patients treated by MISS. OUTCOME MEASURES: Karnofsky performance status (KPS), Frankel grading, blood loss, time to discharge and surgical complications were assessed. METHODS: Mann-Whitney test for significance. RESULTS: MISS fixation was performed without decompression in 46% patients, with an average blood loss of 70mls. MISS was combined with limited open decompression in 54% patients with an average blood loss of 190 mls. Decompression increased mean hospital stay by 6 days. Mean preoperative KPS was 54. At the time of discharge 42% improved, 50% remained the same and 8% worsened. 34% had neurological deficit at presentation; half of these had neurological improvement. 8% of patients required revision surgery for implant loosening at a mean follow up of 18 months. CONCLUSIONS: This is a safe and effective way to treat this difficult group of patients. Morbidity from surgery is reduced significantly, with reduced complications, allowing patients to spend their last few months or weeks with a better quality of life. CONFLICTS OF INTEREST: None. FUNDING SOURCES: None. http://dx.doi.org/10.1016/j.spinee.2014.12.067
Surgical treatment of sacral chordoma: prognostic variables for local recurrence and overall survival Peter Varga, Z. Sz€ overfi, Z. Gokaslan, C. Fisher, S. Boriani., M. Dekutoski, D. Chou, N. Quraishi, M. Fehlings, L. Rhines; Centre for Spinal Studies & Surgery, Queen’s Medical Centre, Nottingham BACKGROUND CONTEXT: Sacral chordomas (SC) are rare, locally invasive, malignant neoplasms. Despite surgical resection, adjuvant therapies, local recurrence (LR) is common and survival is poor.
PURPOSE: The objective of this study was to identify factors that have an impact on the overall (OS) and local recurrence-free survival (LRFS) of patients with SC. STUDY DESIGN/SETTING: We utilised the AOSpine Knowledge Forum Tumour multicentre ambispective database. PATIENT SAMPLE: This consisted of surgically treated SC cases were identified. OUTCOME MEASURES: Local recurrence and survival. METHODS: Cox regression modelling was used to assess the effect of several pre-, peri-, and postoperative variables on OS and LRFS. RESULTS: A total 167 patients with surgically treated SC were identified. The male/female ratio was 98/69 with a mean age of 57 (SD515) years at the time of surgery (18-89 years). The LR was 35% (n557), death occurred in 30% of patients (n550) during the study period (5 days to 16.2 years). The median OS was 6 years post-surgery, and LRFS was 4 years. In the univariate analysis, age (p!0.001) and preoperative motor deficit (p50.003) were significantly associated with poor OS, and nerve root sacrifice showed a trend towards significance (p50.088). Previous tumour surgery at the same site (p50.002), intralesional resection (p!0.001), and tumour volume (p50.030), were significantly associated with LR. In the multivariate models, age and motor deficit were associated with poor survival while previous surgery and intralesional resection were significantly related to LR. CONCLUSIONS: This study identifies two predictive variables for mortality (age and impaired motor function) and two for LR (previous tumour surgery and intralesional surgery) in surgically treated SC. CONFLICTS OF INTEREST: AO Spine Study. FUNDING SOURCES: AO Spine Study. http://dx.doi.org/10.1016/j.spinee.2014.12.068
A low cost spinal dural closure simulation for tomorrow’s spinal surgeons Kevin Agyemang, Deborah Ferguson; Institute Of Neurological Sciences, Southern General Hospital, Glasgow BACKGROUND CONTEXT: Simulated surgical training dates back to Andreas Vesalius (1514-1564), who trained his students to perform cadaveric human dissection. Cost and availability have diminished the contribution of hands-on cadaveric training in today’s curriculum. Modern simulators provide high-quality, time-effective training and may mitigate constraints on operative training arising from working-time restrictions. Sutured durotomy closure is a technically demanding surgical skill, with high-quality closure capable of averting cerebrospinal fluid leaks. We propose a low-cost dural closure simulation model as an adjunct to training in this fundamental skill. PURPOSE: To provide structured information on improvements in microsurgical skills following personalised instructed-simulator training. STUDY DESIGN/SETTING: Prospective, cohort intervention comparing pre- vs. post-training performance. METHODS: Twenty-eight neurosurgical trainees (year 1-8, Scotland) were assigned to instructed-simulator training on a durotomy closure model. Performance of a suture closure of a 5cm incision under a microscope was recorded. Pre- and post-training performance was evaluated by blinded raters for quality of closure, with a standardised tool. RESULTS: Significant differences in the ability of trainees to perform a high quality closure. Pre-training performance scores increased with seniority, with a steep learning curve. Improvement in performance was seen for most participants following training on the simulator. Most participants reported the model was valuable to practising transferable microsurgical skills and supported recording results in their training portfolio. CONCLUSIONS: Skill-specific simulated neurosurgical training can be implemented at a low cost. Our model by providing practice with feedback