Effects of Short Wave Diathermy Added on Dextrose Prolotherapy Injections in Osteoarthritis of the Knee

The Efficacy of Electromagnetic Diathermy for the Treatment of Musculoskeletal Disorders: A Systematic Review with Meta-Analysis

OBJECTIVE

This study aims to establish the effect of electromagnetic diathermy therapies (e.g., shortwave, microwave, capacitive resistive electric transfer) on pain, function, and quality of life in treating musculoskeletal disorders.

METHODS

We conducted a systematic review according to the PRISMA statement and Cochrane Handbook 6.3. The protocol has been registered in PROSPERO: CRD42021239466. The search was conducted in PubMed, PEDro, CENTRAL, EMBASE, and CINAHL.

RESULTS

We retrieved 13,323 records; 68 studies were included. Many pathologies were treated with diathermy against placebo, as a standalone intervention or alongside other therapies. Most of the pooled studies did not show significant improvements in the primary outcomes. While the analysis of single studies shows several significant results in favour of diathermy, all comparisons considered had a GRADE quality of evidence between low and very low.

CONCLUSIONS

The included studies show controversial results. Most of the pooled studies present very low quality of evidence and no significant results, while single studies have significant results with a slightly higher quality of evidence (low), highlighting a critical lack of evidence in the field. The results did not support the adoption of diathermy in a clinical context, preferring therapies supported by evidence.

Comparative Efficacy of Intra-Articular Injection, Physical Therapy, and Combined Treatments on Pain, Function, and Sarcopenia Indices in Knee Osteoarthritis: A Network Meta-Analysis of Randomized Controlled Trials

Knee osteoarthritis (KOA) is associated with a high risk of sarcopenia. Both intra-articular injections (IAIs) and physical therapy (PT) exert benefits in KOA. This network meta-analysis (NMA) study aimed to identify comparative efficacy among the combined treatments (IAI+PT) in patients with KOA. Seven electronic databases were systematically searched from inception until January 2023 for randomized controlled trials (RCTs) reporting the effects of IAI+PT vs. IAI or PT alone in patients with KOA. All RCTs which had treatment arms of IAI agents (autologous conditioned serum, botulinum neurotoxin type A, corticosteroids, dextrose prolotherapy (DxTP), hyaluronic acid, mesenchymal stem cells (MSC), ozone, platelet-rich plasma, plasma rich in growth factor, and stromal vascular fraction of adipose tissue) in combination with PT (exercise therapy, physical agent modalities (electrotherapy, shockwave therapy, thermal therapy), and physical activity training) were included in this NMA. A control arm receiving placebo IAI or usual care, without any other IAI or PT, was used as the reference group. The selected RCTs were analyzed through a frequentist method of NMA. The main outcomes included pain, global function (GF), and walking capability (WC). Meta-regression analyses were performed to explore potential moderators of the treatment efficacy. We included 80 RCTs (6934 patients) for analyses. Among the ten identified IAI+PT regimens, DxTP plus PT was the most optimal treatment for pain reduction (standard mean difference (SMD) = -2.54) and global function restoration (SMD = 2.28), whereas MSC plus PT was the most effective for enhancing WC recovery (SMD = 2.54). More severe KOA was associated with greater changes in pain (β = -2.52) and WC (β = 2.16) scores. Combined IAI+PT treatments afford more benefits than do their corresponding monotherapies in patients with KOA; however, treatment efficacy is moderated by disease severity.

Dextrose Prolotherapy Versus Normal Saline Injection for the Treatment of Lateral Epicondylopathy: A Randomized Controlled Trial

Objective: To compare the effect of dextrose prolotherapy (DPT) with saline in the treatment of chronic lateral epicondylopathy (LE). Design: Triple-blinded randomized controlled trial. Setting: Physical medicine and rehabilitation outpatient clinic. Subjects: Sixty cases of chronic LE participants were included in the study. Methods: Participants were randomly divided into two groups as DPT and normal saline. Saline or hypertonic dextrose (15%) was injected at the baseline, and at the end of the 4th and 8th week. Assessments were performed at baseline, and at the end of the 4th, 8th, and 12th week. Outcome measures: Primary outcome measures were Visual Analog Scale (VAS) for pain, Patient Rated Tennis Elbow Evaluation (PRTEE-Total [PRTEE-T], PRTEE-Pain, PRTEE-Function); secondary outcome measures were Disabilities of the Arm, Shoulder, and Hand Score (DASH) and pain-free handgrip strength. Results: Intragroup analysis demonstrated that both groups significantly improved in VAS, PRTEE, DASH scores, and handgrip strength during the study period (p < 0.001, for all outcome measurements in both groups). Intergroup analysis showed that PRTEE-T score changes between baseline-4th and -12th week; VASrest change between baseline and 4th week in the DPT group were significantly higher than the saline group (p = 0.041, p = 0.038, p = 0.013 respectively). There was no significant difference between groups in VAS, DASH scores, and handgrip strength between any time points, in terms of improvement (p > 0.05). Conclusion: Our study results showed that DPT outperformed saline in PRTEE-T score. Although saline seems to be a comparable clinical effect with DPT, further studies comparing the effects of saline injection and DPT are necessary, in chronic LE.