Outcomes of radical debridement versus no debridement for the treatment of thoracic and lumbar spinal tuberculosis

Posterior Approach With Osteotomized Debridement Versus Combined Anterior and Posterior Approach in Treating Thoracolumbar Tuberculosis: A Retrospective Cohort Study

STUDY DESIGN

Retrospective cohort.

OBJECTIVES

To compare outcomes of posterior osteotomized debridement (OD) with combined anterior and posterior approach (AP) in treating thoracolumbar tuberculosis (TB).

METHODS

This study reviewed 178 patients who were diagnosed as active thoracolumbar TB and surgically treated in our center. One hundred and two patients underwent posterior OD, interbody fusion with titanium mesh cage (TMC), and instrumentation (group A). Seventy-six patients underwent one-stage posterior instrumentation, anterior debridement, and interbody fusion with TMC (group B). Patients' clinical outcomes were compared between the 2 groups.

RESULTS

Erythrocyte sedimentation rate and C-reactive protein in all patients returned to normal levels within 3 months after surgery, and no recurrence occurred during the follow-up. Compared with AP approach, OD surgery was less invasive and with a lower cost (¥ 70 581 ± 17 645 vs ¥ 87 600 ± 27 328; P < .05). Patients treated by OD showed more significant improvements in Visual Analog Scale (VAS) and Oswestry Disability Index (ODI) than those treated by AP approach 3 months postoperatively (VAS: 3.0 ± .7 vs 3.7 ± .9; ODI: 14.7 ± 4.4 vs 20.6 ± 4.6). Two groups showed similar postoperative kyphosis correction and final follow-up correction loss (P = .361 and P = .162, respectively). The OD method had a lower complication rate than AP approach (9.8% [10/102] vs 35.5% [27/76]; P < .05).

CONCLUSIONS

Posterior OD is effective in treating active thoracolumbar TB. Compared with traditional AP approach, OD surgery has less surgical invasiveness, lower complication rate, and shorter fusion time.

Selection of bone graft type for the surgical treatment of thoracolumbar spinal tuberculosis based on the spinal instability neoplastic score: a retrospective single-center cohort study

OBJECTIVES

This study aimed to establish a standard for selecting bone graft type for thoracolumbar spinal tuberculosis surgery based on the spinal instability neoplastic score (SINS).

METHODS

Patients with thoracolumbar tuberculosis who underwent one-stage debridement posteriorly and instrumentation were divided into a structural bone graft group (SBG) (51 cases) and a non-structural bone graft group (NSBG) (54 cases) according to their SINS. SBG was performed when the SINS was ≥ 13 and NSBG was performed when it was 7 ≤ SINS ≤ 12. Baseline data, clinical outcomes, and imaging outcomes were collected and statistically analyzed between the two groups.

RESULTS

Significant improvements in clinical and imaging outcomes were achieved in both groups. Compared to the SBG group, the operation time of the NSBG group was shorter, the intraoperative blood loss of the NSBG group was less, the bone fusion time of the NSBG group was faster.

CONCLUSION

Non-structural and structural bone grafting can achieve comparable therapeutic effects in patients with spinal tuberculosis, and a suitable selection of bone grafts based on quantitative SINS will make full use of the advantages of different bone grafts.

The Relative Lymphocyte Count is Lower when the Etiological Agent in Pott Disease is Successfully Isolated

Objective  To describe the clinico-epidemiological, laboratory, and radiological characteristics of tuberculous spondylodiscitis in the Brazilian population, and to assess whether there are differences between patients in whom the etiological agent in Pott disease was isolated or not. Methods  Patients diagnosed with tuberculosis (TB) of the spine (Pott disease) underwent follow-up between 2009 and 2019 at a quaternary hospital and were divided into 2 groups: successful isolation (SI) of the etiological agent (through bacilloscopy, culture, or positive molecular rapid test) and unsuccessful isolation (UI) of the etiological agent. Results  From a total of 26 patients diagnosed with TB of the spine, 21 (80.7%) were male, with a mean age of 40 ± 22.5 years. The average lymphocyte counts were higher in the UI group (25.35 ± 13.08; p  = 0.025) compared to the SI group (14.18 ± 7.48). Moreover, the monocyte/lymphocyte ratio was lower in the UI group (0.39 ± 0.22; p  = 0.009) than in the SI group (0.89 ± 0.65). Relative lymphocyte counts higher than or equal to 16.7 had a sensitivity of 76.9% and specificity of 62.5% in the UI group. Values higher than or equal to 0.58 for the monocyte/lymphocyte ratio showed a sensitivity of 84.6% and specificity of 75.0% in the UI group. Conclusion  No differences were observed regarding the clinico-epidemiological and radiological characteristics of the two experimental groups. However, the UI group had higher lymphocyte counts and a lower monocyte/lymphocyte ratio.

Single Posterior Surgery Versus Combined Posterior-Anterior Surgery for Lumbar Tuberculosis Patients

OBJECTIVE

Posterior approach of debridement, interbody graft, and instrumentation, and combined posterior-anterior approach of posterior instrumentation and anterior debridement and interbody graft are two essential surgeries for the surgical treatment of spinal tuberculosis (TB), and, until now, which one should be chosen is still controversial. This study aimed to compare the therapeutic efficacy between the single posterior surgery and combined posterior-anterior surgery for lumbar tuberculosis (LTB) patients to elucidate the role of debridement and the effects that result from posterior structure resection.

METHODS

One hundred and nineteen LTB patients managed with single posterior debridement, interbody graft, and instrumentation surgery (Group P, 73 cases), or combined posterior-anterior surgery of posterior instrumentation and anterior debridement and interbody graft (Group P-A, 46 cases) from January 2008 to December 2016 were retrospectively analyzed. Different indexes were compared between the two groups to evaluate the curative effect and explore the role of debridement and the effects that result from posterior structure resection: operation time, blood loss, visual analog scale (VAS), Japanese Orthopaedic Association (JOA), Erythrocyte Sedimentation Rate (ESR), C-reactive Protein (CRP), surgical complication type and rate, spinopelvic sagittal parameters (local kyphosis [LK], pelvic incidence [PI] and pelvic tilt [PT], lumbar lordosis [LL], and sacral slope [SS]), drainage retention duration, hospital stay, time of abscess disappearance, time of activity recovery, and time of bone graft fusion by t-test or χ² test.

RESULTS

The follow-up period ranged from 24 to 60 months. No significant variations were detected between the two groups for age, sex ratio, BMI, disease duration, indication, and the preoperative values of VAS, JOA, ESR, CRP, and LK (p > 0.05). The VAS, JOA, ESR, and CRP significantly improved in both groups after the operation (p < 0.05), along with the LK and LL (p < 0.05). Meanwhile, the SS, PI, and PT showed minor improvement after the operation (p > 0.05). Compared to the P-A group, the P group had shorter operation time and less blood loss and hospital stay (p < 0.05). However, both groups presented similar VAS, JOA, ESR, CRP, and LK improvements (p > 0.05). Additionally, the surgical complication type and rate, postoperative spinopelvic sagittal parameters, and bone graft fusion time did not differ between the two groups (p > 0.05). On the other hand, the patients in the P-A group had a shorter time of abscess disappearance and activity recovery (p < 0.05) but a similar time of drainage retention (p > 0.05) compared to the P group.

CONCLUSION

Both single posterior and combined posterior-anterior surgeries presented a good therapeutic effect for LTB patients with a low surgical complication rate and good quality of LK correction and LL reconstruction and maintenance. Moreover, single posterior surgery was less traumatic than combined posterior-anterior surgery but with slower TB lesion healing and activity recovery. Compared to debridement, stability seems to be more vital for STB healing, posterior structure resection does not affect the effect of spinopelvic realignment.

Vacuum Sealing Drainage for Primary Thoracolumbar Spondylodiscitis: A Technical Note

Primary spinal infection is a challenge for neurosurgeons. Here, for the first time, we introduced the vacuum sealing drainage (VSD) sponge into the intervertebral space for the primary thoracolumbar infection treatment. This study included 6 bedridden patients with thoracolumbar spondylodiscitis without deformity formation. All 6 patients were treated with the VSD in our hospital from June 30, 2018, to August 31, 2019. All 6 cases of thoracolumbar infection achieved clinical cure at 3-month follow-up, and no surgical-related mortalities occurred in our series. One patient died of acute cerebral infarction 5 months after surgery, and the remaining 5 patients completed a 12-month follow-up without recurrence. The JOA score of all 6 cases improved significantly after VSD treatment. VSD is feasible for safe and effective treatment for primary thoracolumbar infection. The short-term follow-up effect is definite.

Isolated Posterior Instrumentation for Selected Cases of Thoracic and Lumbar Spinal Tuberculosis without Radical Debridement

BACKGROUND

The purpose of this study was to evaluate the clinical outcomes of thoracic and lumbar spinal tuberculosis treated with isolated posterior instrumentation without radical debridement.

METHODS

This study retrospectively analyzed 73 patients with thoracic and lumbar spinal tuberculosis who were treated using isolated posterior instrumentation without radical debridement in our hospital between January 2012 to December 2019. The patient group was composed of 42 men and 31 women with a mean age of 67.3 ± 8.6 years. The tuberculosis spine instability score (TSIS) was used to evaluate spine stability. All patients received chemotherapy for 18 months after surgery. The time of surgery, blood loss, visual analogue score (VAS), kyphosis angle, Oswestry disability index (ODI), erythrocyte sedimentation rate (ESR), Frankel grading, SF-36 scores, and local recurrence and complications were analyzed to evaluate the efficacy of isolated posterior instrumentation surgery in the treatment of thoracic and lumbar spinal tuberculosis.

RESULTS

All patients were followed up for 12 to 24 months (mean 14 ± 3.2 months). The mean surgical time was 1.2 ± 1.4 h (range, 1.2-1.6 h), and mean blood loss was 107 ± 18 mL. The postoperative symptoms were obviously relieved. The VAS, kyphosis angle, DI, and ESR decreased, respectively, from 8.24 ± 1.32, 19.82 ± 3.42, 46.25 ± 3.62, and 49.64 ± 17.61 to 1.12 ± 0.21, 7.14 ± 0.81, 20.17 ± 5.11, and 0.35 ± 1.13 at final follow-up. In comparison to preoperative values, SF-36 scores were significantly improved at final follow-up and the differences were statistically significant (p < 0.05). All patients achieved neurological recovery at the final follow-up. There were no recurrences or complications in any of the patients.

CONCLUSION

Isolated posterior instrumentation without radical debridement is a suitable minor surgical trauma that offers a remarkable advantage of effective pain relief, improvement in neurological function and performance status, and no local recurrence for selected patients with thoracic and lumbar spinal tuberculosis.

Predicting Surgical Site Infection Risk after Spinal Tuberculosis Surgery: Development and Validation of a Nomogram

Background:

The purpose of this study was to predict the surgical site infection risk after spinal tuberculosis surgery based on a nomogram.

Patients and Methods:

We collected the clinical data of patients who underwent spinal tuberculosis surgery in our hospital and included all the data in the least absolute shrinkage and selection operator (LASSO) regression analysis. Next, the selected parameters were analyzed using logistic regression. The logistic regression analysis and receiver operating characteristic (ROC) curve analysis were further used to obtain statistically significant parameters. These parameters were then used to construct a nomogram. The C-index, ROC curve, and decision curve analysis (DCA) were used to assess the predictive ability and accuracy of the nomogram, whereas internal verification was used to calculate the C-index by bootstrapping with 1,000 resamples.

Results:

A total of 394 patients with spinal tuberculosis surgery were included in the study, of whom 76 patients had surgical site infections whereas 318 patients did not. The predicted risk of surgical site infection in the nomogram ranged between 0.01 and 0.98. Both the value of the C-index of the nomogram (95% confidence interval [CI], 0.62–0.76) and the area under the curve (AUC) were found to be 0.69. The net benefit of the model ranged between 0.01 and 0.99. In contrast, the C-index calculated by the internal verification method of the nomogram was found to be 0.68.

Conclusions:

The risk factors predicting surgical site infection after spinal tuberculosis surgery included albumin, lesion segment, operation time, and incision length.

Osteotomized debridement versus curetted debridement in posterior approach in treating thoracolumbar tuberculosis: a comparative study

PURPOSE

This study aimed to compare osteotomized debridement (OD) with traditional curetted debridement (CD) in treating thoracolumbar tuberculosis (TB).

METHODS

A total of 188 patients were diagnosed with active thoracolumbar TB and underwent one-stage posterior surgery at our institution. Of the 188 patients, 85 patients were treated with OD, and 103 patients were treated with traditional CD. The patient information, laboratory results, imaging findings, and clinical effectiveness were, respectively, compared between the two groups.

RESULTS

Group OD consumed less operation time and blood loss than group CD (P < 0.05 for both values). No significant difference in hospitalization time was found between the two groups (P > 0.05). The values of C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) in both groups returned to the normal range within one month postoperatively. All patients had significant improvement in visual analog scale (VAS) and oswestry disability index (ODI) postoperatively. The mean fusion time in group OD was shorter than that in group CD (P < 0.05). There was no statistically significant difference in preoperative kyphotic angle between the two groups (P > 0.05), but group OD showed less correction loss than group CD at the final follow-up (P < 0.05). The rate of recurrence and surgery-related complications in group OD was lower than group CD.

CONCLUSIONS

Posterior OD, reconstruction with titanium mesh cages (TMCs), and instrumentation is feasible and effective in treating thoracolumbar TB. Compared with the traditional CD, OD can achieve radical lesion removal, more effective kyphosis correction, lower recurrence rate, and fewer complications.

THE PROFILE OF POTT’S DISEASE IN A SOUTH AMERICAN REFERENCE SERVICE

ABSTRACT Objective: Tuberculosis (TB) represents one of the top ten causes of death in the world. Its insidious onset and nonspecific symptoms usually result in delayed diagnosis. The objective is to evaluate the characteristics of patients with tuberculous spondylodiscitis in follow-up at a South American reference hospital. Method: Retrospective evaluation of the medical records of patients of both sexes and between 0 and 80 years of age diagnosed with tuberculosis of the spine between 2009 and 2018. The variables were analyzed based on groups: epidemiological, clinical, laboratorial, microbiological, imaging tests and treatment. Results: Total of 26 cases, about 80.8% male, mean age 41.6 ± 22.46 years. Axial pain was the most prevalent symptom (84.6%), the VAS score was 6.85 ± 2.87. The mean time between symptom onset and diagnosis was 23.8 ± 24.1 weeks (4-96). The most affected region was the thoracic spine (50% of the cases). Most participants (61.4%) had no change in neurological function (Frankel D and E) at the beginning of treatment and after 6 months, and 84.5% improved. During treatment 34.6% required surgery and the main indication was isolated neurological deficit (55.5%). The most frequently performed procedure was decompression and arthrodesis (55.5%). The average time to cure was 12.0 ± 8.8 months (8-48). Conclusion: Disease with insidious onset, nonspecific symptoms, high frequency of negative microbiological tests in cases with the disease. A small number of the cases required surgical treatment and most of them achieved good neurological recovery. Level of evidence IV; Case series.

Challenges and controversies in the treatment of spinal tuberculosis

Current guidelines regarding management of spinal TB are mostly extrapolated from trials on pulmonary disease. Since the British Medical Research Council (BMRC) trials in the 1970s, there are not many good quality studies that substantiate best practice guidelines for the management of this entity. Tuberculous infection of the spine behaves much differently from bacterial osteomyelitis and limited data leads to ambiguity in many cases. Although a few studies have been conducted in patients with spinal TB, most were in the era preceding short course chemotherapy and prior to current radiological and surgical advances. While spinal TB is primarily managed medically, surgical intervention may be needed in certain cases. We discuss areas of uncertainty and challenges that exist with regards to medical treatment, diagnosis, therapeutic endpoints, and a few surgical considerations. Substantial delay in diagnosis continues to be common with this disease even in the developed nations, leading to substantial morbidity. In light of limited evidence, there is an emerging recognition of the need to individualize various aspects of its treatment such as duration, frequency and acknowledging the limitations of various diagnostic and radiological modalities. We aim to consolidate potential areas of research in the diagnosis and management of spinal TB and to revisit the latest published evidence on its redressal.

Multi-drug resistant spinal tuberculosis-epidemiological characteristics of in-patients: a multicentre retrospective study

Tuberculosis (TB) is the leading cause of death among infectious diseases. China has a high burden of TB and accounted for almost 13% of the world's cases of multi-drug resistant (MDR) TB. Spinal TB is one reason for the resurgence of TB in China. Few large case studies of MDR spinal TB in China have been conducted. The aim of this research was to observe the epidemiological characteristics of inpatients with MDR spinal TB in six provinces and cities of China from 1999–2015. This is a multicentre retrospective observational study. Patients' information was collected from the control disease centre and infectious disease database of hospitals in six provinces and cities in China. A total of 3137 patients with spinal TB and 272 patients with MDR spinal TB were analysed. The result showed that MDR spinal TB remains a public health concern and commonly affects patients 15–30 years of age (34.19%). The most common lesions involved the thoracolumbar spine (35.66%). Local pain was the most common symptom (98.53%). Logistic analysis showed that for spinal TB patients, reside in rural district (OR 1.79), advanced in years (OR 1.92) and high education degree (OR 2.22) were independent risk factors for the development of MDR spinal TB. Women were associated with a lower risk of MDR spinal TB (OR 0.48). The most common first-line and second-line resistant drug was isoniazid (68.75%) and levofloxacin (29.04%), respectively. The use of molecular diagnosis resulted in noteworthy clinical advances, including earlier initiation of MDR spinal TB treatment, improved infection control and better clinical outcome. Chemotherapy and surgery can yield satisfactory outcomes with timely diagnosis and long-term treatment. These results enable a better understanding of the MDR spinal TB in China among the general public.

Comparison of three surgical approaches for thoracolumbar junction (T12-L1) tuberculosis: a multicentre, retrospective study

Background

The surgical approaches to thoracolumbar junction (T12-L1) tuberculosis were controversial. We aimed to compare the safety and efficacy of three different procedures through a multicentre retrospective study.

Methods

The medical records of thoracolumbar junction tuberculosis patients (n = 177) from January 2005 to January 2015 were collected and reviewed. Forty-five patients underwent anterior debridement and instrumented fusion (Group A), 52 underwent anterior combined with posterior debridement and instrumented fusion (Group B) and 80 underwent posterior-only debridement and instrumented fusion (Group C). Patients with neurological deficit were 10 in Group A, 23 in Group B, 36 in Group C. All patients had a standard preoperative and postoperative anti - tuberculous therapy regimen. Clinical outcomes, laboratory indexes and radiological evaluation of the three groups were compared. Operations at each centre were performed by the respective senior medical teams of the six different hospitals.

Results

All three surgical approaches achieved bone fusion and pain relief. Cases with neurological deficits had different degrees of improvement after surgery. The operative time was 330.2 ± 45.4 min, 408.0 ± 54.3 min, 227.9 ± 58.5 min, and the blood loss was 744.0 ± 193.8 ml, 1134.6 ± 328.2 ml, 349.8 ± 289.4 ml in groups A, B and C respectively.

The average loss of correction was 5.5 ± 3.7° in group A, 1.6 ± 1.9° in group B, 1.7 ± 2.2° in group C, and the difference between groups except B vs C were of statistically significant (P < 0.05).

Conclusions

For patients with thoracolumbar junction (T12-L1) tuberculosis, the posterior-only procedure is the better than the anterior-only procedure in the correction of kyphosis and maintenance of spinal stability. The posterior-only procedure is recommended because it achieves the same efficacy as combined procedure with shorter operation time, less blood loss and trauma.

The reasons and clinical treatments of postoperative relapse of Pott's disease

Literature about postoperative relapse of Pott's disease is rare. Accordingly, the risk factors and clinical treatments for postoperative relapse of Pott's disease remain controversial. In order to evaluate the clinical outcomes of surgical treatment of postoperative Pott's disease relapse, and to investigate its optimal therapeutic procedures with respect to focal characteristics, we performed a retrospective review of clinical and radiographic data that were prospectively collected between July 2008 and May 2014 from 753 consecutive spinal tubercular patients including 67 patients who were diagnosed and treated as postoperative relapse of Pott's disease in our hospital. Apart from 9 patients being treated conservatively, the remaining 58 cases received surgery in our series. Specifically, 12 cases underwent anterior debridement, interbody fusion with instrumentation; 15 cases received posterior instrumentation anterior debridement, and bone grafting; 10 cases underwent posterior decompression, bone grafting, and instrumentation; 7 cases with debridement, 5 with debridement and sinus resection. Nine cases received percutaneous drainage and low-dose local continuous chemotherapy. Clinical outcomes before and after treatment were evaluated with statistical analysis based on hematologic and radiographic examinations, bone fusion, and neurologic status. Patients were followed-up for a mean of 39.2 ± 8.2 months (range, 24-60 months). Postoperatively, the erythrocyte sedimentation rate (ESR) became normal within 4-6 months in all patients, and solid bone fusion was achieved within 8 months. Patients exhibited significant improvements in neurological deficits postoperatively, while the visual analog scale for pain showed significant improvements in all patients at final follow-up. The outcomes of follow-up showed that the reasons for postoperative relapse of Pott's disease were multiple. Individualized therapeutic methods should be chosen in accordance with the patient's general condition, recurrence focal characteristic, surgeon's experience, but above all is administration of appropriate chemotherapy.

[Treatment of thoracolumbar spinal tuberculosis by posterior focus debridement and bone grafting and fixation combined with psoas abscess debridement and local chemotherapy via different approachs]

Objective

To compare the effectiveness of posterior and anterior psoas abscess debridement and local chemotherapy in abscess cavity combined with focus debridement, bone grafting, and fixation via posterior approach in treatment of thoracolumbar spinal tuberculosis, and explore the feasibility of psoas abscess debridement via posterior approach.

Methods

Between June 2012 and December 2015, the clinical data of 37 patients with thoracolumbar spine tuberculosis and psoas abscess were retrospectively analyzed. All the patients underwent posterior focus debridement, bone grafting, and internal fixation, and were divided into two groups according to different approaches to psoas abscess debridement. Twenty-one patients in group A underwent abscess debridement and local chemotherapy in abscess cavity via posterior approach; 16 patients in group B underwent abscess debridement and local chemotherapy in abscess cavity via anterior approach. No significant difference was found between two groups in gender, age, disease duration, involved segments, preoperative erythrocyte sedimentation rate (ESR), preoperative C-reactive protein (CRP), side of psoas abscess, maximum transverse diameter and sagittal diameter of psoas abscess, accompanying abscess, abscess cavity separation, preoperative Cobb angle of involved segments, preoperative American Spinal Injury Association (ASIA) classification ( P>0.05). The operation time, intraoperative blood loss, hospitalization time, time of abscess absorption and bone fusion were recorded and compared between 2 groups. The change of pre- and post-operative involved segments Cobb angle was observed. Neurological function was assessed according to ASIA classification.

Results

Except that the operation time of group B was significantly longer than that of group A ( t=-2.985, P=0.005), there was no significant difference in intraoperative blood loss, hospitalization time, time of abscess absorption and bone fusion between 2 groups ( P>0.05). All patients were followed up 18-47 months (mean, 31.1 months). No cerebrospinal fluid leakage occurred intra- and post-operation. Four patients in group A underwent second-stage operation of abscess debridement and local chemotherapy in abscess cavity via anterior approach. All patients got abscess absorption, meanwhile ESR and CRP level normalized at last follow-up. The involved segments Cobb angle improved significantly when compared with preoperative values in both 2 groups ( P<0.05); and there was no significant difference between 2 groups at last follow-up ( P>0.05). Nine patients with spinal cord injury had significant neurological recovery at last follow-up ( Z=-2.716, P=0.007).

Conclusion

Posterior focus debridement, bone grafting, and internal fixation combined with abscess debridement and local chemotherapy in abscess cavity is effective in treatment of thoracolumbar spinal tuberculosis, but in some cases anterior abscess debridement is still required.

Trends in Spinal Surgery for Pott's Disease (2000-2016): An Overview and Bibliometric Study

STUDY DESIGN

Systematic review.

OBJECTIVES

(1) What are the surgical indications? Have they changed over time since the year 2000? (2) What is the current surgical approaches of choice? Have they changed over time since the year 2000? Do they vary by geographical region? (3) What are the most common outcome measures following surgery?

METHODS

Electronic databases and reference lists of key articles were searched from database inception from January 1, 2000 to December 31, 2016 to identify studies specifically evaluating surgical indications, current surgical approaches, and outcome measures for spinal tuberculosis.

RESULTS

Six randomized controlled trials were identified from our search (1 excluded: no surgical arm identified after review) Neurological deficit, instability and deformity were common indications identified. Surgical approach included predominantly anterior for cervical spine and posterior for thoracic and lumbar spine. Combined approach was preferred in pediatric cases. Degree of deformity correction, neurological outcomes, and fusion formed the main bases of assessing surgical outcomes.

CONCLUSIONS

Majority of the current literature is from South Asia. The presence of neurological compromise, deformity, and instability were the primary criteria for surgical intervention. The preferred approach varied with the anatomical region of the spine in adults. Outcome measures predominantly involved deformity correction, neurological deficit, and fusion.

[Treatment of multiple segments of thoracolumbar tuberculosis using posterior unilateral debridement with bone graft and internal fixation]

Objective

To explore the effectiveness and related issues in the treatment of multiple segments of thoracolumbar tuberculosis through posterior unilateral debridement with bone graft and internal fixation.

Methods

The clinical data of 29 patients with multiple segments of thoracolumbar tuberculosis who met the selection criteria were retrospective analyzed between January 2012 and July 2015. There were 17 males and 12 females, with age of 21-62 years (mean, 37.4 years). Lesions contained 3-8 vertebral segments, including 3 segments in 6 cases, 4-6 segments in 17 cases, and 7-8 segments in 6 cases. The center lesions located at thoracic spine in 8 cases, lumbar spine in 10 cases, and thoracolumbar segment in 6 cases, and thoracic lumbar skip lesions in 5 cases. The complications included vertebral abscess in 7 cases, psoas major abscess in 6 cases, sacral spine muscle abscess in 7 cases, iliac fossa and the buttocks abscess in 1 case, spinal canal abscess in 2 cases. Preoperative neurological function was assessed according to the American Spinal Injury Association (ASIA) classification: 1 case of grade B, 3 cases of grade C, 8 cases of grade D, and 17 cases of grade E. The disease duration was 6-48 months (mean, 19.3 months). All the patients were treated with posterior unilateral transpedicular or transarticular debridement with bone graft fusion and internal fixation under general anesthesia. Pre- and post-operative visual analogue scale (VAS) score, Oswestry disability index (ODI), and sagittal Cobb angle were recorded and compared. Bridwell classification standard was used to evaluate bone graft fusion. According to the number and the center of the lesion, the necessity to placement of titanium mesh cage was analyzed.

Results

All the patients were followed up 18-30 months (mean, 24 months). Cerebrospinal fluid leakage occurred in 3 cases, intercostal neuralgia in 2 cases, wound unhealed and fistula formation in 1 case, and ofiliac fossa abscess recurred in 1 case, and all recovered after symptomatic treatment. During follow-up, no fracture or loosing of internal fixation was found and all the lesions were cured at last follow-up. According to Bridwell classification standard, bone graft achieved bony fusion during 4-9 months after operation. The VAS score, ODI, and Cobb angle at immediate after operation and at last follow-up were significantly improved when compared with preoperative ones ( P<0.05). At last follow-up, the neural function of all patients improved significantly when compared with preoperative one ( Z= -3.101, P=0.002). The ratio of no placement of titanium mesh cage was significantly higher in patients with more than 6 lesion segments (6/6, 100%) than in patients with less than 6 lesion segments (4/23, 17.4%) ( χ2=14.374, P=0.000). And the ratio of placement of titanium mesh cage was not significantly different between the patients with the different locations of center focus ( χ2=0.294, P=0.863).

Conclusion

For treating multiple segments of thoracolumbar tuberculosis, the method of posterior unilateral debridement with bone graft and internal fixation can decrease the damage of posterior spinal structures and surgical trauma.