Benign Thoracic Pain

Resolution of an aggressive ideopathic diskitis

We report a case of thoracic spine diskitis of unknown cause that had aggressive and destructive features on MR images. Results of two biopsies were unremarkable. The process began after sneezing, also produced extensive paraspinous enhancement, and resolved without antibiotic therapy both clinically and radiologically after four months. A discussion of case similarities to Reflex Sympathetic Dystrophy (RSD) in the extremities render this possibly the first reported imaging evidence of RSD in the axial skeleton.

Video-assisted thoracoscopic surgery for thoracic disc disease: Classification and outcome study of 100 consecutive cases with a 2-year minimum follow-up period

STUDY DESIGN

Prospectively collected data from regular clinical follow-up evaluations were tabulated, analyzed, reviewed using a patient self-reported questionnaire.

OBJECTIVE

To develop a classification system and present the long-term functional outcome of video-assisted thorascopic surgery for refractory thoracic disc disease.

SUMMARY OF BACKGROUND DATA

Recent studies have found an 11.1% to 14.5% prevalence of thoracic disc herniations. Surgical approaches have included laminectomy, pediculectomy, costotransversectomy, lateral extracavitary, transverse arthropediculectomy, transthoracic-transpleural thoracotomy, and thoracoscopy. Recent reports have documented encouraging early results with video-assisted thorascopic surgery for thoracic disc herniations. Comparisons between thoracoscopy and open thoracotomy have demonstrated improvement in postoperative pain and morbidity with the use of endoscopic techniques.

METHODS

This study included 100 consecutive patients (45 women and 55 men) with an average follow-up evaluation of 4 years (range, 2-6 years). The average age of the patients was 42 years (range, 22-76 years). The average duration of symptoms was 26 months (range, 6-96 months), and 18 patients had undergone prior spine surgery. Patients were graded as follows according to the presenting symptoms (Table 1): Grade 1 (pure axial; n = 28), Grade 2 (pure radicular; n = 5), Grade 3A (axial and thoracic radicular; n = 38), Grade 3B (axial with lower leg pain; n = 19), Grade 4 (myelopathic; n = 8), or Grade 5 (paralytic = 2).

RESULTS

A total of 117 discs were excised in 100 patients. Of the 40 patients who underwent fusion, 27 had autologous rib struts and 13 had threaded fusion. The mean operative time was 173 minutes, blood loss 259 mL, average ICU stay less than 1 day, and average hospital stay 4 days. Minor complications occurred in 21 patients, all of which resolved with no untoward effect. No patient's neurologic status worsened. Four patients underwent a secondary fusion, and a pseudarthrosis developed in one patient. Clinical success was defined objectively as an improvement in Oswestry score of 20% or more at 2 years and at final follow-up assessment, as compared with the preoperative Oswestry score. Overall, objective clinical success was observed at 2 years in 73% of the patients, and at final follow-up assessment in 70% of patients. The average percentage of improvement in Oswestry scores was most marked in Grade 4 patients (myelopathy; 60%), followed by Grade 3A patients (axial and thoracic radicular pain; 37%), Grade 3B patients (axial with leg pain; 28%), and Grade 1 patients (pure axial; 24%). The Oswestry disability score (Table 2) and back pain visual analog score (Table 3) also were significantly improved (P < 0.05) at 2 years and at final follow-up assessment in these patients. In the Grade 2 patients, those pure thoracic radicular pain, Oswestry scores initially improved significantly up to 1 year (P < 0.05). At 2 years, no significant improvement could be shown, and four of the five Grade 2 patients reported increased axial pain as their main symptom at the final follow-up assessment. Significant improvement also was seen in patients with no prior spine surgery and patients with preoperative Oswestry disability scores greater than 50. Of the 68 patients who responded to the final questionnaire, 12 rated the procedure as excellent, 37 as good, 11 as fair, and 8 as poor. Also, 57 (83.8%) of these 68 patients were satisfied and indicated they would recommend the surgery. Of the 36 patients at the final follow up assessment who had severe disability, 34 (94%) were satisfied, as compared with 23 of the 32 patients (72%) who had presented with milder disability.

CONCLUSIONS

The clinical classification system helps in differentiating different presentations of thoracic disc disease and their final outcome. Video-assisted thorascopic surgery appears to be a safe and efficacious method for the treatment of refractory symptomatic thoracic disc herniations. The current data suggest that the procedure has an acceptable long-term outcome, with an 84% overall subjective patient satisfaction rate, and with objective long-term clinical success achieved in 70% of patients.

Effectiveness of spinal manipulative therapy in the treatment of mechanical thoracic spine pain: a pilot randomized clinical trial

BACKGROUND

To date, no substantiated studies have been performed to investigate the efficacy of spinal manipulative therapy on thoracic spinal syndromes.

OBJECTIVE

To investigate the effectiveness of spinal manipulative therapy in the treatment of mechanical thoracic spine pain.

STUDY DESIGN

A single-blind, randomized, comparative, controlled pilot study.

SETTING

Technikon Natal Chiropractic Clinic in Durban, South Africa.

PARTICIPANTS

Thirty subjects selected from the general population (from 16 to 60 years old) were randomly divided into two different treatment groups of 15 each.

METHODS

The objective measurements collected were the thoracic spine ranges of motion with the BROM II goniometer and pain threshold with an algometer. The subjective information required completion of the Oswestry Back Pain Disability Index, short-form McGill Pain Questionnaire, and Numerical Pain Rating Scale-101 Questionnaire by the patient. These 3 forms and objective measurements were collected before the first and final treatment and again at the 1-month follow-up consultation. The data gathered were then statistically analyzed with use of a 95% confidence level. The nonparametric Mann-Whitney U test and the Wilcoxon signed-rank test were used to compare intergroup and intragroup data, respectively. This was conducted at the alpha =.05 level of confidence. Further assessment of the data was conducted by use of power analysis.

INTERVENTIONS

The treatment group received thoracic spinal manipulation. The placebo group received nonfunctional ultrasound application only. The research project was carried out so that both groups received 6 treatments over a period of 2 to 3 weeks. A 1-month follow-up appointment was scheduled after the final treatment to assess the relative long-term benefits of the two different treatments.

RESULTS

Statistically significant results (P < or = .025) were noted for the percentage of pain experienced (Numerical Pain Rating Scale) and for right and left lateral flexion during intergroup comparison after the final treatment. The final treatment results were maintained at the 1-month follow-up consultation; however, there were no further statistically significant results. It was noted that the power was weak, so the probability of committing type II error (falsely accepting the null hypothesis) for the other measurements was high. The intragroup analysis showed statistically significant improvements in the group that received spinal manipulative therapy in both subjective and objective measurements between the first to final treatment and the first treatment to the 1-month follow-up consultation. The placebo group analysis showed a statistically significant improvement in sensory pain only (subjective measurement) between the first treatment and the final treatment.

CONCLUSIONS

This pilot study suggests that spinal manipulative therapy has greater benefits than placebo treatment. The sample size was small, therefore the findings of this trial study should not be considered conclusive but rather should be used as a foundation for planning future studies. In further studies a larger sample size will be necessary to identify subtle changes in measurement parameters and to add to the validity of the results.

'Benign thoracic pain' syndrome: role of magnetic resonance imaging in the detection and localization of thoracic disc disease

The syndrome of 'benign thoracic pain' is seen in young women who have pain and tenderness in the mid-thoracic spine radiating around the chest and aggravated by spinal movement. Ten consecutive patients with this syndrome and 15 controls were evaluated with magnetic resonance imaging (MRI). This showed thoracic intervertebral disc dehydration with no associated prolapse in 90% of the patients and 13% of the controls. We postulate that the clinical features are due to impaired shock absorption of these degenerate discs rather than direct compression of surrounding structures. MRI is non-invasive and does not use ionizing radiation; it allows direct visualization of the entire thoracic spine and cord, and accurate detection of early disc degeneration. Thus, it is the imaging modality of choice for defining the subtle intervertebral disc abnormalities that characterize the 'benign thoracic pain' syndrome.