CompletedPhase 3Phase 4ACTRN12612000615886

low level laser and osteoarthritis

Efficacy of Low-Level Laser Therapy in Patient with Knee Osteoarthritis: Randomized Placebo-Controlled Single-Blind Clinical trial

Sponsor

Mohammed taher ahmed omar

Enrollment

42 participants

Start Date

May 3, 2012

Study Type

Interventional

Conditions

aim of this randomized placebo-controlled single-blind clinical trial was to evaluate the short-term efficacy of LLLT on pain alleviation and functional performance in the patients with chronic knee OA

Summary

The equipment of low level laser was a Gal-Al-As diode laser with a power output of 50 mW and a wavelength of 830 nm. The diameter of the laser beam at the treatment point was 1 mm.

Eligibility

Sex: Both males and femalesMin Age: 45 YearssMax Age: 65 Yearss

Inclusion Criteria1

Patients who had knee OA according to American College of Rheumatology criteria were recruited for the study. All patients had knee OA of grade II or III confirmed radiologically according to the Kellgren-Lawrence grading system. All the patients had a minimum score of 25 on the Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) total score. All patients had moderate to great knee pain defined as a score of 4 or greater on visual analogue scale (VAS) in the previous three months. They were willingness to participate and follow the treatment schedule.

Exclusion Criteria1

The patients were excluded from the study if they had concomitant disease affecting the knee, such as rheumatoid arthritis, injury and / or surgery to the knee, had received physical therapy and intra-articular corticosteroid or hyaluronic acid injections during the last six months. Furthermore, patients were also excluded if they had history of cancer, dementia, neurological deficits (sensory or motor), heart pacemaker, diabetes mellitus, uncontrolled hypertension, or morbid obesity (BMI less than 40).

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Interventions

All participants attended to the physical therapy department two times/ week for the 4-week. Patient assumed supine lying on the treatment bed and wore goggle. The knee(s) underwent laser therapy was

All participants attended to the physical therapy department two times/ week for the 4-week. Patient assumed supine lying on the treatment bed and wore goggle. The knee(s) underwent laser therapy was slightly flexed and supported with a pillow. During the therapy session, hot packs wrapped in toweling were placed on the target knee(s) for 20minutes followed by laser therapy. The equipment of low level laser was a Gal-Al-As diode laser with a power output of 50 mW and a wavelength of 830 nm. The diameter of the laser beam at the treatment point was 1 mm. Eight points were irradiated with LLLT three on the medial side of the knee, three on the lateral side of the knee, and 2 on the medial edge of the tendon of the biceps femoris muscle and semitendinosus muscle in the popliteal fossa. Each point received energy of 6 J/point for one minute, with a total dose of 48 J/cm2 in each session. the duration of each visit was 20 minutes.

Locations(1)

Saudi Arabia

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ACTRN12612000615886