Kyosuke Sonoda

Conservative treatment for cervical spondylotic myelopathy. prediction of treatment effects by multivariate analysis.

BACKGROUND CONTEXT Many studies have suggested only slight effects of conservative treatment on cervical spondylotic myelopathy (CSM), whereas a few reports describe conservative treatment as being effective. This suggested the influence of various factors on treatment outcomes. PURPOSE We investigated symptomatic changes after conservative treatment in patients based on a clear understanding of the effects and limitations of conservative treatment. STUDY DESIGN We have encountered cases that showed symptomatic improvement with conservative treatment and became interested in the effectiveness of conservative treatment for CSM and whether other factors affect the results of conservative treatment. PATIENT SAMPLE We have analyzed the results of conservative treatment for CSM in 69 cases, derived from a population of 101 CSM cases. OUTCOME MEASURES Symptoms at the time of the first examination were compared with those at the final examination, and the patients were classified into three groups showing improvement, no change or exacerbation. METHODS Improvement or exacerbation of the symptoms was used as dependent variables and the collected factors as independent variables, and logistic regression was performed on these variables. RESULTS Multivariate analysis showed significant correlation between clinical outcome and the disease duration and the presence of rigorous conservative treatment. CONCLUSIONS Conservative treatment for CSM is considered to be effective if it is performed intensively in selected patients. In treating CSM, the therapeutic approach must be selected first in consideration of the patients disease duration. Conservative treatment must be carried out intensively after sufficient explanation to the patients. Timely surgical intervention is considered to be important if the symptoms show no change or exacerbation with conservative treatment.

Percutaneous suction aspiration and drainage for pyogenic spondylitis

Study Design. Retrospective evaluation of results in 23 cases of early‐stage pyogenic spondylitis treated with percutaneous suction aspiration and drainage. Objectives. To evaluate the efficacy of percutaneous suction aspiration and drainage as a treatment method for early‐stage pyogenic spondylitis. Summary of Background Data. Traditional surgical treatment for pyogenic spondylitis has the disadvantage of increased morbidity caused by the extensive exposure required in the presence of infection. Recently, a few case reports have described minimally invasive treatment for pyogenic spondylitis in which percutaneous suction aspiration was used. However, the efficacy of this new treatment has not yet been evaluated. Methods. All charts, radiographs, and bacteriologic and histologic findings were reviewed. All 23 patients who received the new treatment were observed clinically and radiographically, to evaluate the efficacy of the treatment. Results. To date, all patients have been observed for more than 2 years. Twenty (87%) of the 23 patients have shown good results according to the evaluation. The causative organism was identified using tissue culturing in 12 (52%) of the 23 patients. The causative organism was Staphylococcus aureus in 8, and Staphylococcus epidermidis, Candida albicans, Pseudomonas aeruginosa, and Propionibacterium acnes in 1 each. Back pain as the major symptom in these patients was relieved within an average of 9.4 days after the operation. However, the patient in whom the spondylitis was caused by Candida albicans has received this new treatment twice without success. Conclusions. Evaluation of percutaneous suction aspiration with drainage shows that it is an effective treatment for early‐stage pyogenic spondylitis.

Original submissionConservative treatment for cervical spondylotic myelopathy: prediction of treatment effects by multivariate analysis☆☆☆

BACKGROUND CONTEXT Many studies have suggested only slight effects of conservative treatment on cervical spondylotic myelopathy (CSM), whereas a few reports describe conservative treatment as being effective. This suggested the influence of various factors on treatment outcomes. PURPOSE We investigated symptomatic changes after conservative treatment in patients based on a clear understanding of the effects and limitations of conservative treatment. STUDY DESIGN We have encountered cases that showed symptomatic improvement with conservative treatment and became interested in the effectiveness of conservative treatment for CSM and whether other factors affect the results of conservative treatment. PATIENT SAMPLE We have analyzed the results of conservative treatment for CSM in 69 cases, derived from a population of 101 CSM cases. OUTCOME MEASURES Symptoms at the time of the first examination were compared with those at the final examination, and the patients were classified into three groups showing improvement, no change or exacerbation. METHODS Improvement or exacerbation of the symptoms was used as dependent variables and the collected factors as independent variables, and logistic regression was performed on these variables. RESULTS Multivariate analysis showed significant correlation between clinical outcome and the disease duration and the presence of rigorous conservative treatment. CONCLUSIONS Conservative treatment for CSM is considered to be effective if it is performed intensively in selected patients. In treating CSM, the therapeutic approach must be selected first in consideration of the patients disease duration. Conservative treatment must be carried out intensively after sufficient explanation to the patients. Timely surgical intervention is considered to be important if the symptoms show no change or exacerbation with conservative treatment.