We evaluated 103 consecutive patients (64 men, 39 women; mean age, 54.6 years; range, 25-75 years) with MSCC who presented with lower extremity weakness, with or without back pain, and underwent surgery between January 2001 and December 2008. The mean follow-up duration was 25.8 months (range, 1 to 129 months). Patients were classified by sex, primary tumor site, metastatic site, surgical level, Tokuhashi score, postoperative radiation therapy, postoperative chemotherapy, pre-and post-operative ambulation status, preoperative motor
INTRODUCTIONMetastatic spinal cord compression (MSCC) eventually affects 5-10% of patients with cancer, and spinal instrumentation with direct decompressive surgery has become the standard treatment for metastatic lesions 1,2,5,7,9,17) . The goals of surgical intervention are to prolong patient survival and improve quality of life 4) . Non-ambulatory paraplegic patients, either at presentation or after treatment, have a much shorter life expectancy than ambulatory patients 8,12,14,18,21,28) . Thus, proper patient selection and careful surgical planning are prerequisites for low complication rates, acceptable function, and improved overall prognosis 15,18) . Although technically demanding, en bloc surgical resections reduce the risk of tumor recurrence; however, they do not neces-
Department of Neurological Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, KoreaObjective : The goals of surgical intervention for metastatic spinal cord compression (MSCC) are prolonging survival and improving quality of life. Non-ambulatory paraplegic patients, either at presentation or after treatment, have a much shorter life expectancy than ambulatory patients. We therefore analyzed prognostic factors for survival and postoperative ambulation in patients surgically treated for MSCC. Methods : We assessed 103 patients with surgically treated MSCC who presented with lower extremity weakness between January 2001 and December 2008. Factors prognostic for overall survival (OS) and postoperative ambulation, including surgical method, age, sex, primary tumor site, metastatic spinal site, surgical levels, Tokuhashi score, and treatment with chemo-or radiation therapy, were analyzed retrospectively. Results : Median OS was significantly longer in the postoperatively ambulatory group [11.0 months; 95% confidence interval (CI), 9.29-12.71 months] than in the non-ambulatory group (5.0 months; 95% CI, 1.80-8.20 months) (p=0.035). When we compared median OS in patients with high (9-11) and low (0-8) Tokuhashi scores, they were significantly longer in the former (15.0 months; 95% CI, 9.29-20.71 months vs. 9.0 months; 95% CI, 7.48-10.52 months; p=0.003). Multivariate logistic regression analysis showed that preoperative ambulation with or without aid [odds ratio (OR) 5.35; 95% CI 1.57-18.17; p=0.007] and hip flexion power greater than grade III (OR 6.23; 95% CI, 1.29-7.35; p=0.038) were prognostic of postoperative ambulation. Conclusion : We found that postoperative ambulation and preopera...