Lumbar multifidus muscle ultrasound imaging: Is handheld technology reliable?

BACKGROUND: Advancement in ultrasound imaging technology has led to the development of handheld devices that are more accessible to physical therapists due to decreased cost, reduced size, and improved ease of use relative to current established units. Physical therapists use ultrasound imaging of the lumbar multifidus muscle (LMM) to assist in rehabilitation of patients with lumbar pathology. OBJECTIVES: To identify the inter-device reliability of measuring the LMM thickness during a sustained contraction when comparing handheld (Butterfly iQ+) and established (SonoSite M-Turbo) ultrasound units. A secondary purpose was to determine the reliability of a student physical therapist using both devices. DESIGN: A reliability measurement study METHOD: A blinded examiner identified the LMM at the L4 vertebral level and measured the thickness of the contracted muscle utilizing both the handheld and established ultrasound devices. ICC values were calculated to determine the inter-device and intra-rater reliability. RESULTS: The study included 42 healthy participants, 30 females and 12 males, with a mean age of 38.5 years. The inter-device reliability during a sustained LMM contraction was excellent (ICC = 0.92, 95% CI: 0.87-0.94) and the intra-rater reliability was good for both the handheld (ICC = 0.85, 95% CI: 0.73-0.92) and established (ICC = 0.89, 95% CI: 0.82-0.93) ultrasound units. CONCLUSION: Results support the use of handheld ultrasound by physical therapists and students to measure the LMM thickness. Future studies could investigate the reliability of handheld ultrasound in a variety of musculoskeletal and pathological structures important to PT practice.

The microbiome of an outpatient rehabilitation clinic and predictors of contamination: A pilot study.

BACKGROUND: Understanding sources of microbial contamination in outpatient rehabilitation (REHAB) clinics is important to patients and healthcare providers. PURPOSE: The purpose of this study was to characterize the microbiome of an outpatient REHAB clinic and examine relationships between clinic factors and contamination. METHODS: Forty commonly contacted surfaces in an outpatient REHAB clinic were observed for frequency of contact and swiped using environmental sample collection kits. Surfaces were categorized based on frequency of contact and cleaning and surface type. Total bacterial and fungal load was assessed using primer sets specific for the 16S rRNA and ITS genes, respectively. Bacterial samples were sequenced using the Illumina system and analyzed using Illumina-utils, Minimum Entropy Decomposition, QIIME2 (for alpha and beta diversity), LEfSe and ANCOM-BC for taxonomic differential abundance and ADONIS to test for differences in beta diversity (p<0.05). RESULTS: Porous surfaces had more bacterial DNA compared to non-porous surfaces (median non-porous = 0.0016ng/µL, 95%CI = 0.0077-0.00024ng/µL, N = 15; porous = 0.0084 ng/µL, 95%CI = 0.0046-0.019 ng/µL, N = 18. p = 0.0066,DNA. Samples clustered by type of surface with non-porous surfaces further differentiated by those contacted by hand versus foot. ADONIS two-way ANOVA showed that the interaction of porosity and contact frequency (but neither alone) had a significant effect on 16S communities (F = 1.7234, R2 = 0.0609, p = 0.032). DISCUSSION: Porosity of surfaces and the way they are contacted may play an underestimated, but important role in microbial contamination. Additional research involving a broader range of clinics is required to confirm results. Results suggest that surface and contact-specific cleaning and hygiene measures may be needed for optimal sanitization in outpatient REHAB clinics.

The effect of visceral manipulation on Diastasis Recti Abdominis (DRA): A case series.

BACKGROUND: Diastasis recti abdominis (DRA) is a condition that affects many postpartum and older women, often due to pregnancy-related issues and heavy lifting. Published research on nonsurgical DRA treatment has primarily focused on exercise to correct or prevent this dysfunction. A survey of women's health physical therapists identified that visceral manipulation and other interventions are utilized to treat DRA. No literature exists to identify the specifics of visceral manipulation or its effect on DRA. STUDY DESIGN: This case series is a retrospective chart review of three female patients with DRA who received visceral manipulation. CASE DESCRIPTION: The ages of the patients were 33, 37, 39 years old and all were positive for DRA based on inter-rectus distance (IRD) described as greater than two finger-width measurements at one of three measurement sites. Patients presented with chief complaints of low back pain, abdominal pain, and vulvar burning and itching. All women were gravida two and para two. Each patient received at least four treatments of visceral manipulation (VM). OUTCOMES: VM decreased the IRD, decreased numeric pain rating scores, and improved functional activities in three women with DRA. Improvements were also seen in bladder and bowel symptoms. DISCUSSION: Four treatments of visceral manipulation appear to be effective in decreasing DRA measurements in three women. DRA measurements improved to two finger-widths or less above, at, and below the umbilicus. The changes remained stable for six to sixteen months.