Immediate Effects of High-intensity Laser Therapy on Knee Joint Position Sense and Knee Muscle Strength in Patients with Knee Osteoarthritis

Mahidol University10 enrolled

Overview

The goal of this clinical trial is to compare whether HILT versus Sham-HILT is effective to reduce pain, improve knee joint position sense, and knee muscle strength. Participants will undergo a single-session of HILT or Sham-HILT, the measurements of pain, knee joint position sense error, and knee muscle strength will be done at before, immediately after, and 24-hour after the single-session intervention.

The investigators would like to investigate whether single session of high-intensity laser therapy (HILT) is promising to see the changes in individuals with knee osteoarthritis (KOA)-related knee pain regarding pain intensity, knee joint position sense, and knee muscle strength. The objectives of this study is to compare pre and post, and between the two groups (HILT versus Sham-HILT) at after interventions regarding pain, knee joint position sense, and knee muscle strength. Participants will undergo a single-session of HILT or Sham-HILT by an experienced musculoskeletal physical therapist, the measurements of pain, knee joint position sense error, and knee muscle strength will be done at before, immediately after, and 24-hour after the single-session intervention.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

Conditions

Knee Osteoarthritis

Interventions

high-intensity laser therapyDEVICE

high-intensity laser therapy (HILT) machine, ASA laser

Sham-HILTDEVICE

Sham-HILT, HILT machine without laser release

Eligibility

Sex: ALLMin age: 50 Years

Medical Language ↔ Plain English

Inclusion Criteria: * knee pain greater than 3 on the Visual Analog Scale (VAS) for more than 3 months * diagnosed with unilateral knee osteoarthritis by a physician or meeting the American College of Rheumatology Classification Criteria for clinical knee osteoarthritis * the severity of knee osteoarthritis is classified as grades 0-3 according to the Kellgren-Lawrence (KL) classification * should not have undergone any specific treatments in the 3 months preceding the recruitment for the study, such as steroid injections. Exclusion Criteria: * any other musculoskeletal problems associated with knee pain * musculoskeletal problems associated with the hip and ankle joints * a history of lower limb fracture * neurological conditions * contraindications for laser therapy

Locations (1)

Physical Therapy

Salaya, Changwat Nakhon Pathom, Thailand

Outcomes

Primary Outcomes

Knee joint position sense

Knee joint position sense, the investigators used the joint position repositioning technique. The participants were measured for joint position reposition technique with a smartphone application "Measure App" (iPhone 12 Pro Max, Apple Inc., USA). The smartphone attached at shank of tibia bone at the malleolar level. The participants sat in the starting position knee flexion 90°. Then the participants with eyes closed were actively guided to the knee flexion 45 degrees and hold for 3 seconds. The data was recorded the difference between performed position and targeted position.

Time frame: Baseline, immediately after, 24-hour after intervention

Secondary Outcomes

Knee muscle strength

The muscle strength measured both quadriceps and hamstring muscles by the handheld dynamometer at 90°.

Time frame: Baseline, immediately after, 24-hour after intervention

Pain

The participants rated the pain scores using a 10-cm visual analog scale (VAS) ranged from 0 "no pain at all" on the left end to 10 "worst pain imaginable" on the right end.

Time frame: Baseline, immediately after, 24-hour after intervention

Data from ClinicalTrials.gov

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