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1.
J Spinal Disord Tech ; 28(8): 301-7, 2015 Oct.
Article in English | MEDLINE | ID: mdl-23897052

ABSTRACT

STUDY DESIGN: A prospective, randomized, blinded, multicenter clinical study. OBJECTIVE: To evaluate carboxymethylcellulose/polyethylene oxide gel (Oxiplex) in improving clinical outcomes in subjects having predominant leg pain and elevated low back pain undergoing first-time lumbar discectomy for disk herniation. SUMMARY OF BACKGROUND DATA: Clinical studies in the United States and Italy found that Oxiplex reduced leg pain after decompression surgery. METHODS: A total of 68 subjects with herniated lumbar disk were enrolled and randomized into treatment (surgery plus gel) or surgery-only control groups. A prospective statistical analysis assessed the effect of gel in the severe back pain subgroup (prespecified as greater than or equal to median baseline back pain of the population studied). All subjects except 2 controls lost to follow-up completed the study. Preoperative and postoperative visual analogue scale leg pain scores were analyzed and compared between groups at 60 days after surgery. RESULTS: There were no serious adverse events or neurological safety concerns reported in any patients. Gel-treated patients had statistically significantly lower visual analogue scale leg pain scores at study end compared with controls (P=0.0240), representing a 21% additional reduction in leg pain compared with surgery alone in the severe baseline back pain subgroup (P=0.0240). The proportion of subgroup patients experiencing zero leg pain at study end was significantly higher in the gel treatment group (60%) than in the control group (23%) (P=0.0411). CONCLUSIONS: The data from this study confirm and extend results of 2 previous studies in Italy and the United States that reported statistically significantly greater reductions in leg pain in gel-treated patients with severe preoperative low back pain compared with patients who only underwent decompression surgery.


Subject(s)
Cellulose/analogs & derivatives , Diskectomy/adverse effects , Gels/therapeutic use , Leg/pathology , Low Back Pain/therapy , Lumbar Vertebrae/surgery , Pain, Postoperative/etiology , Pain, Postoperative/therapy , Polyethylene Glycols/therapeutic use , Adult , Cellulose/adverse effects , Cellulose/therapeutic use , Endpoint Determination , Female , Gels/adverse effects , Humans , Low Back Pain/etiology , Male , Polyethylene Glycols/adverse effects , Prospective Studies , Treatment Outcome
2.
Spine (Phila Pa 1976) ; 37(8): 631-41, 2012 Apr 15.
Article in English | MEDLINE | ID: mdl-21897344

ABSTRACT

STUDY DESIGN: Prospective, randomized, blinded clinical trial. OBJECTIVE: To evaluate effectiveness of Oxiplex gel for reduction of pain and associated symptoms after lumbar discectomy. SUMMARY OF BACKGROUND DATA: Oxiplex gel (carboxymethylcellulose, polyethylene oxide, and calcium) is used during discectomy to coat the surgical site for reduction of pain and symptoms after lumbar discectomy. METHODS: Patients undergoing single-level lumbar discectomy performed by laminectomy or laminotomy and randomized to receive either surgery plus Oxiplex gel (treatment group) or surgery alone (control group) were assessed 6 months after surgery using (1) a quality of life questionnaire (Lumbar Spine Outcomes Questionnaire [LSOQ]) and (2) clinical evaluations. RESULTS: There were no statistically significant differences in baseline demographics, surgical procedures, LSOQ scores, and clinical evaluations between treatment (N = 177) and control (N = 175) groups. More gel-treated patients were satisfied with outcome of their surgical treatment than control patients (P = 0.05). The gel-treated group showed greater reductions in pain and symptoms from baseline compared with surgery-only controls. Additional benefits of gel were consistently shown in reduction of leg and back pain at 6 months in the patient population having substantial back pain at baseline (greater than or equal to the median LSOQ pain score of 63). In that population, there was a statistically significant reduction of leg pain and back pain (P < 0.01) in the treatment group compared with controls. Fewer patients in the treatment group had abnormal musculoskeletal physical examinations at 6 months compared with controls. There were no cases of cerebrospinal fluid leaks and no differences in laboratory values or vital signs. Patients in the treatment group had less hypoesthesia, paraesthesia, sensory loss, and fewer reoperations during the 6-month follow-up than controls (1 vs. 6). CONCLUSION: These data demonstrate improvements in clinical outcomes resulting from the use of Oxiplex gel in discectomy procedures for treatment of lumbar disc herniation.


Subject(s)
Back Pain/drug therapy , Cellulose/analogs & derivatives , Diskectomy/adverse effects , Laminectomy/adverse effects , Pain, Postoperative/drug therapy , Polyethylene Glycols/therapeutic use , Adult , Aged , Cellulose/therapeutic use , Female , Humans , Intervertebral Disc/surgery , Intervertebral Disc Displacement/surgery , Lumbar Vertebrae/surgery , Male , Middle Aged , Pain Measurement , Patient Satisfaction , Prospective Studies , Quality of Life , Single-Blind Method , Surveys and Questionnaires , Treatment Outcome
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