OBJECTIVE: To describe and analyze a new protocol for the extraction of platelet-rich plasma (PRP) for use in clinical practice and compare this technique with methods that have been previously described in the medical literature. METHODS: We extracted PRP from 20 volunteers using four different protocols (single spin at 1600 ×g, single spin at 600 ×g, double spin at 300 and 700 ×g, and double spin at 600 and 900 ×g). In another group of 12 individuals, we extracted PRP with our new technique (named ‘turn down-turn up') consisting of a double spin (200 ×g and 1600 ×g) closed system using standard laboratory equipment (including an ordinary benchtop centrifuge), where the blood remained in the same tube during all processes, reducing the risk of contamination. Platelet counts adjusted to baseline values were compared using analysis of covariance (ANCOVA). RESULTS: Using the four previously described protocols (mentioned above), we obtained concentrations of platelets that were 1.15-, 2.07-, 2.18-, and 3.19-fold greater than the baseline concentration, respectively. With the turn down-turn up technique, we obtained a platelet count that was 4.17-fold (95% confidence interval (CI): 3.09 to 5.25) greater than the baseline platelet count ( p =0.063 compared with the double spin at 600 and 900 ×g method). The total cost of the disposable materials used in the extraction process was less than US$10.00 per individual. CONCLUSION: In the present study, we described a simple and safe method for obtaining PRP using low-cost devices.

Aim: To evaluate the use of a multitarget platelet-rich plasma (PRP) injection approach for the treatment of chronic low back pain (LBP). Materials & Methods: Forty-six patients with more than 12 weeks of LBP who failed conservative treatments were injected with PRP into the facet joints, intervertebral discs, epidural space and/or paravertebral muscles. Visual analog pain scale and Roland-Morris Disability Questionnaire scores were measured at baseline and predefined intervals. Results: Mean visual analog pain scale was reduced from 8.48 to 5.17 and mean Roland-Morris Disability Questionnaire from 18.0 to 10.98 at 12 weeks (p < 0.001). These statistically significant improvements were sustained over 52 weeks. No adverse effects were observed. Conclusion: Our PRP approach demonstrated clinically favorable results and may be a promising treatment for chronic LBP.

Objective: To describe and analyze a new protocol for the extraction of platelet-rich plasma (PRP) for use in clinical practice and compare this technique with methods that have been previously described in the medical literature.Methods: Sixteen blood samples from healthy volunteers were collected. PRP was prepared using our new double-spin technique, consisting of successive centrifugation of blood samples with two different spins, without opening the container. Descriptive analysis of cell counts in baseline and PRP samples was undertaken. Comparison between cell and platelet count in baseline and PRP samples, as well as the statistical analysis, were done.Results: The mean platelet concentration ratio was 3.47 (SD: 0.85; 95% CI: 3.01-3.92; range: 2.48-5.71). The baseline whole blood platelet count correlated positively to the PRP platelet count (rP = 0.56; 95% CI: 0.09-0.88; P = 0.023). The PRP was enriched for lymphocytes and monocytes but presented significantly lower counts of neutrophils and eosinophils in comparison to baseline.Conclusion: Results show a safe and easily reproducible method to obtain PRP for use in clinical daily practice.

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Objective: Low back pain has been strongly related to the degenerative process of the spine, especially the degeneration of the intervertebral disc and facet joints. The main procedures for the management of low back pain are no intended to slow down or reverse the degenerative process. Platelet Rich Plasma (PRP), an orthobiologic product, has been the subject of several studies in the management of low back pain. Methods: A prospective case series study presenting the clinical results of 23 patients treated with PRP injections performed following clinical a interventionist protocol called PerMuTIS – Personalized Multi Target Biologic Injection of the Spine. The method to obtain the platelet concentrate was the Simple Double Spin technique, a low-cost double spin that produces Leucocyte Rich PRP. Baseline scores of pain and disability using the Visual Analog Scale (VAS) and Roland-Morris Disability Questionnaire (RMDQ) were recorded. Results: Mean VAS pain score across the cohort decreased by approximately 62%, while the Roland-Morris disability score decreased by about 60% at 52 weeks. There was no report of adverse events. The Leucocite and Monocite Rich PRP product showed concentration of 4.3X above baseline, with monocites concentration of 3.2X baseline. Conclusion: The concept of application in multiple targets using a simple and low-cost preparation technique proved to be feasible and without reports of serious side effects that compromise its indication. The PerMuTIS – Personalized Multi Target Biologic Injection in the Spine Technique using Simple Double Spin protocol demonstrated safety and feasibility in this prospective study of patients with low back pain who failed conservative treatments. Large scale, multicenter randomized clinical trial will provide an appropriate level of evidence to assist in clinical practice.

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