Evaluate the complications and outcomes of off-hours spinal metastasis surgery.

Retrospective analysis of a prospective collected data.

Preoperative, operative and post-operative data were collected as well as the complications and Frankel score at all time checkpoints. Off-hours surgery was defined as surgery starting between 17:00 and 8:00 the following day or surgery during the weekend. p < 0 .05 was defined as statistical significance threshold.

376 patients were included with an incidence of off-hours surgery of 32%. There was an increase of neurologic complication in the off hours group. This was associated with a higher ASA score and older population group. Oddly, there was decreased operative time with off-hours surgery with no difference in bleeding and number of fusion levels. Nonetheless, there was a higher percentage of neurologic improvement with off hours surgery compared to in-hours surgery. Finally, there were no effect on patients' survival in this patient population.

To our knowledge, this is the first report of the effect of off-hours surgery on complications and outcomes of spinal metastasis. Greater neurological compromise and higher age and ASA scores were associated with higher incidence of off-hours surgery. It is associated with decreased surgical time with higher percentage of neurological improvement. Finally, there is no effect of surgical timing on survival rates.

Spinal metastases are seen in 10–30% of cancer patients. Twenty percent of these metastases occur in the lumbo-sacral spine. Lumbo-sacral spine has different mechanical properties and encloses the cauda equina. Few studies took interest in this spinal segment. The objective of this study is to evaluate prognostic factors of lumbo-sacral spinal metastasis treated in our center.

We retrospectively reviewed 376 patients who were operated in our center from 2010 to 2018. Eighty-nine patients presented lumbo-sacral metastases and thus were included. Data collected included age, smoking, tumor histology, American spinal injury association (ASIA) score, modified Tokuhashi score, modified Bauer score, ambulation status and adjuvant treatment.

The mean population age was 60.9 years old (35–85). The tumor histology was predominantly lung (19 patients, 21.3%), breast (13 patients, 14.6%), kidney (11 patients, 12.4%) and prostate (9 patients 10.1%). Twenty-two patients (24.7%) were unable to walk preoperatively. Seventy-nine patients (88.8%) underwent a posterior open approach with corpectomy in 65 patients (73%). Eighteen patients regained ambulation post-operatively (81.8%). The mean survival was 24.03 months (CI95% 17,38–30,67, Range 0–90) and the median of survival was 9 months (CI95% 4.38–13.62). Better preoperative ASIA score had a significant favorable effect (p=0.03) on survival. Patients who regained their ability to walk had better survival (25.1 months (CI95% 18.2–32) VS 0.5 months (CI95% 0–1.1). Postoperative radiotherapy had a benefic effect on survival (p=0.019): Survival Increased from 10.5 months (CI95% 2.4–18.7) to 27.6 months (CI95% 19.5–35.8). The modified Tokuhashi and the modified Bauer scores underestimated the survival of the patients with lumbosacral metastases.

Lumbosacral spinal metastases has better survival than expected by Tokuhashi and Bauer score. Surgical procedure have an important impact on survival and the ability to walk.

Incoming of a spine metastasis remains a major bad prognosis factor in cancer evolution. Consensus over the years is now well accepted in most of European teams dealing with spinal metastasis. Two major opportunities exist in the treatment of spine metastasis:

Conservative treatment with an association of radio and or chemotherapy and or hormonotherapy. Efficiency of such treatments is well documented and must not be considered as a patient abandon.

Surgical treatment is based on two major options. The first one is palliative with the aim of decompression and stabilization. Aim is to cure pain and neurological involvement. The second one is curative with total or partial vertebrectomy in the aim to cure the cancer.

In all cases decision must be made considering age- general condition histo – pathology – neurological status

Considering surgical indications through out this symposium we would like to address three controversial points.

The first topic to be addressed will be: “Total vertebrectomy: when?” presented successively Doctor MARTIN BENLLOCH and Professor BORIANI. The goal of this presentation is to determine the indications of total vertebrectomy more than the surgical technique. These indications appearing essential within the framework of the metastatic patients, while insisting not only on the natural history, but also on the tumoral extension which determines the feasibility of the vertebrectomy. Professor POINTILLART and Professor BORIANI will then discuss about the strategy to adopt when confronted with multi-metastatic patients “Multi-metastatic patients: what strategy?”. This topic will focus primarily on the problem of multi level spinal metastatic lesions: the strategies to be adopted with respect to the patients presenting other metastatic lesions, as well as on a functional forecast (fragility of the long bone), or on the other hand, on metastasis without immediate functional incidence. We also would like to discuss the treatment of the primitive tumour, i.e. if it is the metastasis which is revealing cancer, is it necessary to first treat the primitive tumour, than proceed to the treatment of the metastatic lesions? The third topic of this session will be “When Not to Operate on Metastatic Patients?”, presented by Professor POINTILLART. The goal of this discussion is to be able to give a progress report on the surgical indications within the framework of a spinal metastatic patient. In a certain number of cases surgery is questionable with the discovery of lesions, because of their extended character, or the extreme malignity of the primitive tumour. In other situations, too many lesions will make surgery disputable. Last case scenario is a recurring tumor, because of its extension, its development, even its neurological complications, will make surgery challenging. All these points in our opinion should be openly discussed. Each session will be followed by a 10 minute discussion

Summary

Neurological deficits resulting from spinal cord compression occur infrequently. When presented with neurological compromise, the most common management was radiotherapy, with surgery only being offered to patients who developed neurological deficit or pathological fracture resulting in unresolved severe pain post radiotherapy.

Background

Loss of muscle mass (sarcopenia) and function in ageing are associated with reduced functional ability, quality of life and reduced life expectancy. In cancer patients, age related muscle loss may be exacerbated by cachexia and poor nutritional intake. Individuals with widespread disseminated disease are most prone to increasing functional decline, increased morbidity and accelerated death. However subjective assessments of physical performance have been shown to be poor indicators of life expectancy in these patients.

Introduction An international six-centre prospective observational cohort study.

Objective. To assess the feasibility of radical surgical excisional treatment of spinal metastasis

Materials and methods. Patients with histologically confirmed spinal metastasis originating from epithelial primary site mostly treated with instrumented surgery were studied. Surgical strategies were either radical excisional (enbloc and debulking) or palliative decompressive surgery. Outcomes assessed were measures of quality of life including pain, mobility, sphincter and neurological functions.

Results. A total of 223 patients with a mean age of 61 years and equal number of males and females were studied. Breast, renal, lung and prostate accounted for three quarters of tumours and 60% had metastasis that extended beyond one vertebra. Most patients presented with pain (92%), paraparesis (24%) and abnormal urinary sphincter 22% (5% were incontinent). Seventy four percent of patients underwent radical surgery, 92% of all patients had instrumented fixation. 73% of the radical group had improved pain control (63% for palliative group), 72% regained ability to walk (45% for palliative group), 92% maintained a functional neurological function of Frankel E/D (64% for palliative) and 55% had improved sphincter control (21% for palliative group).

Overall of all petients who underwent surgery, 71% had improved pain control, 53% regained mobility, 64% improved by at least one Frankel grade or maintained normal neurology and 39% regained normal urinary sphincter function. While 18% were bed bound preoperatively, only 5% were still in bed postoperatively. Perioperative mortality rate was 5.8% and morbidity was 21%. The median survival for the cohort was 352 days (11.7 months). The radical surgery group had a median survival of 438 days and the palliative group 112 days (P = 0.003).

Conclusion. Surgical treatment of spinal metastatic tumour is feasible with low mortality, an acceptably low morbidity and affords patients better quality of remaining life. Radical surgical excision has better outcome than palliative surgery in pain control and in neurological function rescue including regaining mobility and improvement in sphincter control.

Objective: To report a case of non-obstructive urinary retention secondary to cord compression due to metastases from undiagnosed carcinoma of prostate in a middle aged patient. This is the first case to be reported of its kind.

Case Report: A 58-year old brick layer, presented with urinary retention with overflow incontinence was referred by GP to A& E. No obstruction was felt during catheterisation and residual urine of 1.2 litres was drained. He also had dull low back pain since 5–6 weeks that was relieved by simple analgesia and he was able to work normally. He had no other symptoms or significant past medical history. Clinical examination including digital rectal examination (DRE) was normal. Laboratory investigations were normal except a rise in Alkaline phosphatase(194U/L) and ESR (43 mm/hr). X-rays of his spine were normal. MRI scan of the spine showed multiple metastatic lesions, bilateral end plate fractures and loss of vertebral body height of D12 with bulging of posterior vertebral body wall causing extradural compression of the conus.

An urgent D12 decompression and biopsy of D12 was done with D10-L2 instrumentation. PSA levels were > 500ng/ml.Histopathology showed moderately to poorly differentiated adenocarcinoma with a cribriform pattern. Immunohistochemistry showed a strong staining for PSA consistent with metastatic adenocarcinoma of the prostate. Post-operatively, he regained bladder control and was referred to oncologists for further management.

Conclusion: Urinary retention may be the only presenting symptom of spinal cord compression due to metastasis from prostate cancer. High index of suspicion of prostate cancer in middle-aged and elderly male patients with urinary retention, especially when associated with back pain of any severity, even though prostate is normal on DRE is needed. PSA in patients complaining of low back pain who are at high risk for prostate cancer is recommended, even though DRE is normal.

Aims

The modern prevalence of primary tumours causing metastatic bone disease is ill-defined in the oncological literature. Therefore, the purpose of this study is to identify the prevalence of primary tumours in the setting of metastatic bone disease, as well as reported rates of pathological fracture, postoperative complications, 90-day mortality, and 360-day mortality for each primary tumour subtype.

The revised Tokuhashi, Tomita and modified Bauer scores are commonly used to make difficult decisions in the management of patients presenting with spinal metastases. A prospective cohort study of 199 consecutive patients presenting with spinal metastases, treated with either surgery and/or radiotherapy, was used to compare the three systems. Cox regression, Nagelkerke’s R² and Harrell’s concordance were used to compare the systems and find their best predictive items. The three systems were equally good in terms of overall prognostic performance. Their most predictive items were used to develop the Oswestry Spinal Risk Index (OSRI), which has a similar concordance, but a larger coefficient of determination than any of these three scores. A bootstrap procedure was used to internally validate this score and determine its prediction optimism.

The OSRI is a simple summation of two elements: primary tumour pathology (PTP) and general condition (GC): OSRI = PTP + (2 – GC).

This simple score can predict life expectancy accurately in patients presenting with spinal metastases. It will be helpful in making difficult clinical decisions without the delay of extensive investigations.

Cite this article: Bone Joint J 2013;95-B:210–16.