Tissue Changes in Lumbar Multifidus After Dry Needling in Subjects With Nonspecific Low Back Pain.
Condition: Low Back Pain
MeSH terms: Back Pain; Low Back Pain
Study type: Interventional

Summary: 
      Finding out if tissue changes (thickness, histogram and shrinkage rate) that occur in the
      lumbar multifidus after deep dry needling are related to changes in patient's pain and
      disability.
    

Detailed description: 
      Lower back pain in regarded as the main cause of disability in the world, which has a
      significant socio-economic impact. Deep dry needling is effective in handling such pain and
      is one of the techniques of choice by physiotherapists. In this area, the use of ultrasound
      provides information of interest such as length, thickness, diameter, cross-sectional area or
      muscle volume, among others.

      Objective: Finding out if tissue changes (thickness, histogram and shrinkage rate) that occur
      in the lumbar multifidus after deep dry needling are related to changes in patient's pain and
      disability.

      It's a double-blind randomized clinical trial in parallel groups. Patients will be randomly
      divided into 2 groups. One of them will receive dry needling and the other dry needling
      placebo. The initial, post-needling and a week after evaluations will be performed by a
      blinded to the intervention therapist.
    

Intervention name(s): Dry needling; Placebo dry needling
Intervention type(s): Other; Other
Intervention description(s): The dry needling will be performed using disposable stainless steel needles (AGU-PUNT needles of size 0.30x50mm or 0.30x60mm depending on the patient) that will be inserted perpendicularly at the point of major hyperalgesia using the Hong technique. The patient will be in the prone position with a pillow placed in the abdominal region. The area will be cleaned with an antiseptic and allowed to air dry for 3 minutes. After this time, the needle will be inserted at the point indicated by the evaluator before reaching the lumbar multifidus by means of echolocation. Once it is assured that it is in the right place, a total of 10 repetitions are performed. The needle will be removed by depositing it in a needle container and a compression will be removed in the treated area until hemostasis is achieved.; Placebo dry needling will be performed with DongBang DB100 Acupuncture Needles which, upon contact with the patient, retract, hiding in the needle handle. The patient will be in the prone position with a pillow in the abdominal region. The area will be cleaned with an antiseptic and allowed to air dry for 3 minutes. At the point indicated by the evaluator, the placebo needle will be placed initially and the introduction of the needle and its location will be simulated with the ultrasound system. 10 repetitions will be performed. The needle will be removed by depositing it in a needle container and a compression will be made in the treated area.
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary purpose: Treatment
Keywords: lower back pain; dry needling; ultrasound; disability