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Cold Laser Therapy of Geneseo & the Quad Cities
Cold Laser Therapy of Geneseo, Henry County, & The Quad Cities
Dr. Dan Lommell, FACO, CCSP®
Cold Laser Therapy
Anti-Inflammatory Effect of Low-Level Laser and Light-Emitting Diode in Zymosan-Induced Arthritis
de Morais NC, Barbosa AM, Vale ML, Villaverde AB, de Lima CJ,
Cogo JC, Zamuner SR.
Photomed Laser Surg. 2009 Sep 25. [PMID: 19780633]
Abstract Objective: The aim of this work was to investigate the
effect of low-level laser therapy (LLLT)
and light-emitting diode (LED) on
formation of edema, increase in vascular permeability, and
articular joint hyperalgesia in zymosan-induced arthritis.
The effect of low-level laser in knee osteoarthritis: a double-blind, randomized, placebo-controlled trial
Hegedus B, Viharos L, Gervain M, Gálfi M.
Photomed Laser Surg. 2009 Aug;27(4):577-84. [PMID: 19530911]
INTRODUCTION: Low-level laser therapy
(LLLT) is thought to have an analgesic
effect as well as a biomodulatory effect on microcirculation. This
study was designed to examine the pain-relieving effect of LLLT
and possible microcirculatory changes measured by thermography in
patients with knee osteoarthritis (KOA).
Low power laser treatment in patients with knee osteoarthritis
Tascioglu F, Armagan O, Tabak Y, Corapci I, Oner C.
Swiss Med Wkly. 2004 May 1;134(17-18):254-8. [PMID: 15243853]
The aim of this study was to investigate the analgesic efficacy of low power laser therapy in patients with knee osteoarthritis (OA). The study design was randomised, placebo-controlled and single blinded. Sixty patients with knee OA according to the American College of Rheumatology criteria were included and randomly assigned to three treatment groups: active laser with dosage of 3 J/per painful point, active laser with a dosage of 1.5/J per painful point and placebo laser treatment groups. A Gal-Al-As diode laser device was used as a source of low power laser with a power output of 50 mW and a wavelength of 830 nm. The patients were treated 5 times weekly with 10 treatments in all. The clinical assessments included Western Ontario and McMaster Universities osteoarthritis index (WOMAC) pain, stiffness and physical function subscales. In addition, the intensity of pain at rest and on activation was evaluated on a visual analogue scale. Compared to baseline, at week 3 and at month 6, no significant improvement was observed within the groups. Similarly, no significant differences were found among the treatment groups at any time. With the chosen laser type and dose regimen the results that we obtained in this study, suggest that low-level laser therapy has no effect on pain in patients with knee OA.
Carpal tunnel syndrome treated with a diode laser: a controlled treatment of the transverse carpal ligament
Chang WD, Wu JH, Jiang JA, Yeh CY, Tsai CT.
Photomed Laser Surg. 2008 Dec;26(6):551-7. [PMID: 19025407]
OBJECTIVE: The purpose of this
placebo-controlled study was to investigate the therapeutic
effects of the 830-nm diode laser on carpal tunnel syndrome (CTS).
Ultrasound and laser therapy in the treatment of carpal tunnel syndrome
Bakhtiary AH, Rashidy-Pour A.
Aust J Physiother. 2004;50(3):147-51. [PMID: 15482245]
This study was designed to compare the efficacy of ultrasound and laser treatment for mild to moderate idiopathic carpal tunnel syndrome. Ninety hands in 50 consecutive patients with carpal tunnel syndrome confirmed by electromyography were allocated randomly in two experimental groups. One group received ultrasound therapy and the other group received low level laser therapy. Ultrasound treatment (1 MHz, 1.0 W/cm(2), pulse 1:4, 15 min/session) and low level laser therapy (9 joules, 830 nm infrared laser at five points) were applied to the carpal tunnel for 15 daily treatment sessions (5 sessions/week). Measurements were performed before and after treatment and at follow up four weeks later, and included pain assessment by visual analogue scale; electroneurographic measurement (motor and sensory latency, motor and sensory action potential amplitude); and pinch and grip strength. Improvement was significantly more pronounced in the ultrasound group than in low level laser therapy group for motor latency (mean difference 0.8 m/s, 95% CI 0.6 to 1.0), motor action potential amplitude (2.0 mV, 95% CI 0.9 to 3.1), finger pinch strength (6.7 N, 95% CI 5.0 to 8.2), and pain relief (3.1 points on a 10-point scale, 95% CI 2.5 to 3.7). Effects were sustained in the follow-up period. Ultrasound treatment was more effective than laser therapy for treatment of carpal tunnel syndrome. Further study is needed to investigate the combination therapy effects of these treatments in carpal tunnel syndrome patients.
Noninvasive laser neurolysis in carpal tunnel syndrome
Weintraub MI, MD, FACP
Muscle Nerve (1997) 20:1029-1031.
The peripheral nervous system is photosensitive, the scientific rationale for this study which determines the efficacy and safety to laser light exposure in 30 cases with CTS. Nine joules of energy over 5 points (7-15 treatments) reversed CTS in 77% of cases with three-fold normalization of CMAP. A photobiologic response was seen in 80%. This unique and novel approach is cost-effective and has a role in future management of CTS.
Treatment of repetitive use carpal tunnel syndrome
Smith CF, Vangsness CT, Anderson T & Good W (1995)
Proceedings SPIE (1995) 2395; 658-661.
A randomized, double-blind study was initiated in 1990 to evaluate an eight-point conservative treatment program in carpal tunnel syndrome. 160 patients were delineated with symptoms of carpal tunnel syndrome and these patients were then divided into two groups. Both groups were subjected to an ergonomically correct eight-point work modification program. A counterfeit LLLT unit was used in Group A, while an actual LLLT unit was used in Group B. Groups A and B were statistically significantly different in terms of return to work, conduction study improvement, and certain range of motion.
Effects of low-level laser therapy and orthodontic tooth movement on dental pulps in rats
Abi-Ramia LB, Sasso Stuani A, Sasso Stuani A, Sasso Stuani MB, de Moraes Mendes A.
Angle Orthod. 2010 Jan;80(1):116-22. [PMID: 19852650]
Abstract Objectives: To describe the microscopic pulpal
reactions resulting from orthodontically induced tooth movement
associated with low-level laser therapy (LLLT)
The short-term effects of low-level lasers as adjunct therapy in the treatment of periodontal inflammation
Qadri T, Miranda L, Tunér J, Gustafsson A.
J Clin Periodontol. 2005 Jul;32(7):714-9. [PMID: 15966876]
OBJECTIVES: The aim of this
split-mouth, double-blind controlled clinical trial was to study
the effects of irradiation with low-level lasers as an adjunctive
treatment of inflamed gingival tissue.
Effect of low-level laser therapy on Candida albicans growth in patients with denture stomatitis.
Maver-Biscanin M, Mravak-Stipetic M, Jerolimov V.
Photomed Laser Surg. 2005 Jun;23(3):328-32. [PMID: 15954824]
OBJECTIVE: The purpose of our report
is to present the effect of low-level laser therapy on Candida
albicans growth and palatal inflammation in two patients with
denture stomatitis. BACKGROUND DATA:
The most common oral mucosal disorder in denture wearers is
denture stomatitis, a condition that is usually associated with
the presence of the yeast Candida albicans. Different treatment
methods have been suggested to treat this symptom, none of which
is proven to be absolutely effective.
Laser therapy in the treatment of dentine hypersensitivity
Ladalardo TC, Pinheiro A, Campos RA, Brugnera Júnior A, Zanin
F, Albernaz PL, Weckx LL.
Braz Dent J. 2004;15(2):144-50. Epub 2005 Mar 11. [PMID: 15776198]
Cervical dentine hypersensitivity is the most frequent complaint among reported odontalgias. Thus, this study evaluated the effectiveness of two types of lasers (660 nm wavelength red, and 830 nm wavelength infrared) as dentine desensitizers, as well as both the immediate and late therapeutic effects in individuals 25 to 45 years of age. A total of 40 teeth with cervical exposure were treated in 4 sessions. They were divided into 2 groups according to treatment. A 660 nm wavelength red diode laser and an 830 nm wavelength infrared diode laser were used. Dentine sensitivity to cold nociceptive stimulus was evaluated by means of a pain numeric scale from zero to 10 before each treatment session, at 15 and 30 min after irradiation, and in a follow-up period of 15, 30 and 60 days after the end of treatment. Significant levels of dentinal desensitization were only found in patients ranging in age from 25 to 35 years. The 660 nm red diode laser was more effective than the 830 nm infrared laser and a higher level of desensitization was observed at the 15 and 30 minute post-irradiation examinations. The immediate and late therapeutic effects of the 660 nm red diode laser were more evident in 25-35-year-old patients compared with those of the 830 nm infrared diode laser, in terms of the different age groups.
Efficacy of low power laser therapy in fibromyalgia: a single-blind, placebo-controlled trial
Gür A, Karakoç M, Nas K, Cevik R, Saraç J, Demir E.
Lasers Med Sci. 2002;17(1):57-61. [PMID: 11845369]
Low energy lasers are widely used to treat a variety of musculoskeletal conditions including fibromyalgia, despite the lack of scientific evidence to support its efficacy. A randomised, single-blind, placebo-controlled study was conducted to evaluate the efficacy of low-energy laser therapy in 40 female patients with fibromyalgia. Patients with fibromyalgia were randomly allocated to active (Ga-As) laser or placebo laser treatment daily for two weeks except weekends. Both the laser and placebo laser groups were evaluated for the improvement in pain, number of tender points, skinfold tenderness, stiffness, sleep disturbance, fatigue, and muscular spasm. In both groups, significant improvements were achieved in all parameters (p<0.05) except sleep disturbance, fatigue and skinfold tenderness in the placebo laser group (p>0.05). It was found that there was no significant difference between the two groups with respect to all parameters before therapy whereas a significant difference was observed in parameters as pain, muscle spasm, morning stiffness and tender point numbers in favour of laser group after therapy (p<0.05). None of the participants reported any side effects. Our study suggests that laser therapy is effective on pain, muscle spasm, morning stiffness, and total tender point number in fibromyalgia and suggests that this therapy method is a safe and effective way of treatment in the cases with fibromyalgia.
Effects of Laser on the Synovial Fluid in the Inflammatory Process of the Knee Joint of the Rabbit
Sandoval MC, Mattiello-Rosa SM, Soares EG, Parizotto NA.
Photomed Laser Surg. 2009 Feb 2 [PMID: 19187016]
Abstract Objective: The purpose of this study was to evaluate the effects of low-level laser (LLL) energy on the clinical signs of inflammation and the cellular composition of synovial fluid (SF) in the inflamed knee of the rabbit. Background Data: There are few findings related to the effects of LLL on SF in inflammatory processes and there is little knowledge about the optimal parameters for reducing joint inflammation. Materials and Methods: Inflammation in the right knee of 36 rabbits was induced by intracapsular injection (0.2 mL) of Terebinthina commun (Tc). The animals were randomly assigned to three groups: acute experimental group (AEG), chronic experimental group (CEG), and control group (CG), which only received Tc. Each group was divided in two subgroups of six animals each. The AEG and CEG groups began to receive laser treatment 2 and 5 d after the induction of inflammation, respectively. Laser irradiation at a wavelength of 830 nm, power output of 77 mW, and power density of 27.5 W/cm(2) was applied daily for 7 d for either 0.12 sec or 0.32 sec, resulting in doses of 3.4 J/cm(2) and 8 J/cm(2), respectively. Body mass, joint perimeter, joint temperature, and the morphology of the SF were analyzed. Results: There was no statistically significant differences between groups in the body mass, joint perimeter, and SF morphology. Conclusion: Laser irradiation with the selected parameters produced only a few subtle differences in the inflammatory signs and the SF. The lack of effects may have been due to the short irradiation time.
Laser-Accelerated INFLAMMATION/PAIN REDUCTION AND HEALING
by Richard Martin, BS, CLT
Practical Pain Management, Nov/Dec 2003
Injured cells and tissues have greater affinity for LLLT than healthy cells and tissues. LLLT in the treatment of inflammation, pain and healing is a highly integrated process, but the author separates those processes categorically for identification.
Acute Inflammation Reduction(flowchart provided in the original article) – After injury, tissues initiate a series of biological responses and cellular membrane reactions which manifest in a combination of edema, inflammation, pain and functional debility. LLLT mediates by: (1) Stabilizing cellular membranes; (2) Enhancing molecule ATP production and synthesis; (3) Stimulating vasodilation via increased Histamine, Nitric Oxide and Serotonin; (4) Accelerating leukocytic activity; (5) Increasing Prostaglandin synthesis; (6) Reducing Interleukin-1; (7) Enhancing lymphocyte response; (8) Increasing angiogenesis; (9) Modulation temperature; (10) Enhancing superoxide dismutase levels; and (11) Decreasing C-reactive protein and neopterin levels.
Pain Reduction(flowchart provided in the original article) – Evidence justifies a conclusion that LLLT reduces pain by combination of processes: (1) Increase in b-Endorphins; (2) Blocked depolarization of C-fiber afferent nerves; (3) Increased nitric oxide production; (4) Increased nerve cell action potential; (5) Axonal sprouting and nerve cell regeneration; (6) Decreased Bradykinin levels; (7) Increased release of acetylcholine; and (8) Ion channel normalization.
Tissue Healing – LLLT enhances wound healing by: (1) Enhanced leukocyte infiltration; (2) Increased macrophage activity; (3) Increased neovascularization; (4) Increased fibroblast proliferation; (5) Keratinocyte proliferation; (6) Early epithelialization; (7) Growth factor increases; (8) Enhanced cell proliferation and differentiation, and (9) Greater healed wound tensile strength.
LLLT with trigger points technique: clinical study on 243 patients
Journal of Clinical Laser Medicine and Surgery (Aug. 1996) 14(4):163-167.
Among the various methods of application techniques in LLLT (He-Ne 632.8 nm visible red or infrared 820-830 nm continuous wave and 904 nm pulsed emission) there are very promising “trigger points”, i.e., myofascial zones of particular sensibility and of highest projection of focal pain points, due to ischemic conditions. The effect of LLT and the results obtained after clinical treatment of >200 patients (headaches and facial pain, skeletomuscular ailments, myogenic neck pain, shoulder and arm pain, epicondylitis, tenosynovitis, low back and radicular pain, Achilles tendonitis) to whom the “trigger points” were applied were better than expected. It was also observed that rigidity decreases, mobility is restored (functional recovery), and spontaneous or induced pain decreases or even disappears, by movement. LLLT improves local microcirculation and it can also improve oxygen supply to hypoxic cells in the treated areas and can remove collected waste products. Normalization of the microcirculation interrupts the “circulus vitiosus” of the origin of the pain and its development (Melzak: muscular tension→pain→increased tension→increased pain, etc.). Results measured according to VAS/VRS/PTM: in acute pain, diminished >70%; in chronic pain >60%. Clinical effectiveness depends on correctly applied energy dose – over/under dosage produces opposite, negative effects on cellular metabolism. No negative effects were noted and the use of analgesic drugs could be reduced or completely excluded. LLLT may be used as monotherapy or as a supplement to other therapeutic procedures for pain treatment.
Analysis of Low-Level Laser Radiation Transmission in Occlusive Dressings
de Jesus Guirro RR, de Oliveira Guirro EC, Martins CC, Nunes
Photomed Laser Surg. 2009 Oct 9. [PMID: 19817516]
Abstract Objective: The purpose of this study is to analyze the
power transmitted by low-level laser therapy (LLLT)
into occlusive dressings using different wavelengths for the
treatment of cutaneous lesions.
Effect of low level laser therapy (830 nm) with different therapy regimes on the process of tissue repair in partial lesion calcaneous tendon
Oliveira FS, Pinfildi CE, Parizoto NA, Liebano RE, Bossini PS,
Garcia EB, Ferreira LM.
Lasers Surg Med. 2009 Apr;41(4):271-6. [PMID: 19347936]
OBJECTIVE: Calcaneous tendon is one of
the most damaged tendons, and its healing may last from weeks to
months to be completed. In the search after speeding tendon
repair, low intensity laser therapy has shown favorable effect. To
assess the effect of low intensity laser therapy on the process of
tissue repair in calcaneous tendon after undergoing a partial
Efficacy of low-level laser therapy in the management of neck pain: a systematic review and meta-analysis of randomised placebo or active-treatment controlled trials
Chow RT, Johnson MI, Lopes-Martins RA, Bjordal JM.
Lancet. 2009 Dec 5;374(9705):1897-908. Epub 2009 Nov 13. [PMID: 19913903]
BACKGROUND: Neck pain is a common and
costly condition for which pharmacological management has limited
evidence of efficacy and side-effects. Low-level laser therapy (LLLT)
is a relatively uncommon, non-invasive treatment for neck pain, in
which non-thermal laser irradiation is applied to sites of pain.
We did a systematic review and meta-analysis of randomised
controlled trials to assess the efficacy of LLLT
in neck pain.
here to read the complete study.
The effect of 300 mW, 830 nm laser on chronic neck pain: a double-blind, randomized, placebo-controlled study
Chow RT, Heller GZ, Barnsley L.
Pain. 2006 Sep;124(1-2):201-10. Epub 2006 Jun 27. [PMID: 16806710]
A randomized, double-blind, placebo-controlled study of low-level laser therapy (LLLT) in 90 subjects with chronic neck pain was conducted with the aim of determining the efficacy of 300 mW, 830 nm laser in the management of chronic neck pain. Subjects were randomized to receive a course of 14 treatments over 7 weeks with either active or sham laser to tender areas in the neck. The primary outcome measure was change in a 10 cm Visual Analogue Scale (VAS) for pain. Secondary outcome measures included Short-Form 36 Quality-of-Life questionnaire (SF-36), Northwick Park Neck Pain Questionnaire (NPNQ), Neck Pain and Disability Scale (NPAD), the McGill Pain Questionnaire (MPQ) and Self-Assessed Improvement (SAI) in pain measured by VAS. Measurements were taken at baseline, at the end of 7 weeks’ treatment and 12 weeks from baseline. The mean VAS pain scores improved by 2.7 in the treated group and worsened by 0.3 in the control group (difference 3.0, 95% CI 3.8-2.1). Significant improvements were seen in the active group compared to placebo for SF-36-Physical Score (SF36 PCS), NPNQ, NPAD, MPQVAS and SAI. The results of the SF-36 – Mental Score (SF36 MCS) and other MPQ component scores (afferent and sensory) did not differ significantly between the two groups. Low-level laser therapy (LLLT), at the parameters used in this study, was efficacious in providing pain relief for patients with chronic neck pain over a period of 3 months.
Systematic review of the literature of low-level laser therapy (LLLT) in the management of neck pain
Chow RT, Barnsley L.
Lasers Surg Med. 2005 Jul;37(1):46-52. [PMID: 15954117]
OBJECTIVES: Low-level laser therapy (LLLT)
is widely used in the treatment of musculoskeletal pain. However,
there is controversy over its true efficacy. We aimed to determine
the efficacy of LLLT in the treatment of
neck pain through systematically reviewing the literature.
Effects of Low-Level Laser Therapy on Pain and Scar Formation after Inguinal Herniation Surgery: A Randomized Controlled Single-Blind Study
de Paiva Carvalho RL, Alcântara PS, Kamamoto F, Cressoni MD,
Photomed Laser Surg. 2009 Oct 12. [PMID: 19821701]
Abstract Objective: The aim of this study was to investigate
the efficacy of an infrared GaAlAs laser operating with a
wavelength of 830 nm in the postsurgical scarring process after
inguinal-hernia surgery. Background: Low-level laser therapy (LLLT)
has been shown to be beneficial in the tissue-repair process, as
previously demonstrated in tissue culture and animal experiments.
However, there is lack of studies on the effects of LLLT
on postsurgical scarring of incisions in humans using an infrared
830-nm GaAlAs laser. Method: Twenty-eight patients who underwent
surgery for inguinal hernias were randomly divided into an
experimental group (G1) and a control group (G2). G1 received LLLT,
with the first application performed 24 h after surgery and then
on days 3, 5, and 7. The incisions were irradiated with an 830-nm
diode laser operating with a continuous power output of 40 mW, a
spot-size aperture of 0.08 cm(2) for 26 s, energy per point of
1.04 J, and an energy density of 13 J/cm(2). Ten points per scar
were irradiated. Six months after surgery, both groups were
reevaluated using the Vancouver Scar Scale (VSS),
the Visual Analog Scale, and measurement of the scar thickness.
Results: G1 showed significantly better results in the VSS
totals (2.14 +/- 1.51) compared with G2 (4.85 +/- 1.87); in the
thickness measurements (0.11 cm) compared with G2 (0.19 cm); and
in the malleability (0.14) compared with G2 (1.07). The pain score
was also around 50% higher in G2.
Comparative study using 685-nm and 830-nm lasers in the tissue repair of tenotomized tendons in the mouse
Carrinho PM, Renno AC, Koeke P, Salate AC, Parizotto NA, Vidal
Photomed Laser Surg. 2006 Dec;24(6):754-8. [PMID: 17199477]
OBJECTIVE: The objective of this
study was to evaluate the effects of 685- and 830-nm laser
irradiations, at different fluences on the healing process of
Achilles tendon (Tendon calcaneo) of mice after tenotomy.
THE USE OF LASER THERAPY AND ADDITIONAL THERAPEUTIC MODALITIES AFTER ARTHROSCOPY OF THE KNEE AT ALPINE SKI TEAM
Lilic Alen, physiotherapist; 2Kozlevcar ivec Maja, dr. med. spec.fiz.reh.med.; 3Marcan Radoslav, dr.med., spec.ortop 1FIZIO, Ilirska Bistrica, Slovenija, 2Iskra Medical, Ljubljana, Slovenija, 3Ortopedska bolninica Valdoltra, Slovenija.
We review different kinds of injuries in the alpine ski sport concentrate on the injuries of the ligamentar part of the knees and meniscs in slovenian ski team. After the description of the injuries is a detailed presentation of the rehabilitational procedures from the first day of the injury till the return in to the competition arena. We explain the modalities of the rehabilitational procedures and their influence in the tissues, their main and side effects. Our main attention is focused on the use of the biostimulative lasers of higher power – 1,2 W and wavelength of 830 nm and their influence speedy recovery of the patients and their success in later competitions.
A systematic review with procedural assessments and meta-analysis of low level laser therapy in lateral elbow tendinopathy (tennis elbow)
Bjordal JM, Lopes-Martins RA, Joensen J, Couppe C, Ljunggren
AE, Stergioulas A, Johnson MI.
BMC Musculoskelet Disord. 2008 May 29;9:75. [PMID: 18510742]
BACKGROUND: Recent reviews have
indicated that low level level laser therapy (LLLT)
is ineffective in lateral elbow tendinopathy (LET)
without assessing validity of treatment procedures and doses or
the influence of prior steroid injections.
Effectiveness of low-level laser therapy in temporomandibular joint disorders: a placebo-controlled study
Fikácková H, Dostálová T, Navrátil L, Klaschka J.
Photomed Laser Surg. 2007 Aug;25(4):297-303. [PMID: 17803388]
OBJECTIVE: Low-level laser therapy (LLLT)
treatment for pain caused by temporomandibular joint disorders (TMD)
was investigated in a controlled study comparing applied energy
density, subgroups of TMD, and duration
Arthralgia of the temporomandibular joint and low-level laser therapy
Fikácková H, Dostálová T, Vosická R, Peterová V, Navrátil
L, Lesák J.
Photomed Laser Surg. 2006 Aug;24(4):522-7. [PMID: 16942435]
OBJECTIVE: This case report describes
the treatment of a patient with arthralgia of the
temporomandibular joint (TMJ) caused by
Effect of low-level laser therapy on inflammatory reactions during wound healing: comparison with meloxicam
Viegas VN, Abreu ME, Viezzer C, Machado DC, Filho MS, Silva DN,
Photomed Laser Surg. 2007 Dec;25(6):467-73. [PMID: 18158747]
OBJECTIVE: This study evaluated the
action of low-level laser therapy (LLLT)
on the modulation of inflammatory reactions during wound healing
in comparison with meloxicam. BACKGROUND
DATA: LLLT has
been recommended for the postoperative period because of its
ability to speed healing of wounds. However, data in the
literature are in disagreement about its anti-inflammatory action.
Low-Level Laser Therapy Facilitates Superficial Wound Healing in Humans: A Triple-Blind, Sham-Controlled Study
Hopkins JT, McLoda TA, Seegmiller JG, David Baxter G.
J Athl Train. 2004 Sep;39(3):223-229. [PMID: 15496990]
OBJECTIVE: Low-level laser therapy (LLLT)
has been promoted for its beneficial effects on tissue healing and
pain relief. However, according to the results of in vivo studies,
the effectiveness of this modality varies. Our purpose was to
assess the putative effects of LLLT on
healing using an experimental wound model. DESIGN
We used a randomized, triple-blind, placebo-controlled design with
2 within-subjects factors (wound and time) and 1 between-subjects
factor (group). Data were collected in the laboratory setting. SUBJECTS:
Twenty-two healthy subjects (age = 21 +/- 1 years, height = 175.6
+/- 9.8 cm, mass = 76.2 +/- 14.2 kg). MEASUREMENTS:
Two standardized 1.27-cm(2) abrasions were induced on the anterior
forearm. After wound cleaning, standardized digital photos were
recorded. Each subject then received LLLT
(8 J/cm(2); treatment time = 2 minutes, 5 seconds; pulse rate =
700 Hz) to 1 of the 2 randomly chosen wounds from either a laser
or a sham 46-diode cluster head. Subjects reported back to the
laboratory on days 2 to 10 to be photographed and receive LLLT
and on day 20 to be photographed. Data were analyzed for wound
contraction (area), color changes (chromatic red), and luminance.
Dose and wavelength of laser light have influence on the repair of cutaneous wounds
Mendez TM, Pinheiro AL, Pacheco MT, Nascimento PM, Ramalho LM.
J Clin Laser Med Surg. 2004 Feb;22(1):19-25. [PMID: 15117483]
OBJECTIVE: The objective of the
present study was to compare histologically the effect of GaAlAs
(lambda 830 nm, phi approximately 2 mm(2), 35 mW) and InGaAlP
(lambda 685 nm, phi approximately 2 mm(2), 35 mW) lasers, alone or
in association with doses of 20 or 50 J/cm(2) on cutaneous wounds
in the dorsum of the Wistar rat. Background Data: The healing time
of surgical wounds is of extreme importance and it is usually
associated with a post-operative period free of infection and with
less pain and inflammation.
Wound healing of animal and human body sport and traffic accident injuries using low-level therapy treatment; a randomized clinical study of seventy-four patients with control group
Simunovic Z, Ivankovich AD, Depolo A.
Journal of Clinical Laser Medicine and Surgery (2000) Apr;18(2):67-73
The main objective was to assess the efficacy of low level laser therapy (LLLT) on wound healing in rabbits and humans. The initial research was a randomized controlled animal study, to evaluate the effects of laser irradiation on the healing of surgical wounds in rabbits. The application of LLLT on the human body is analogous to those of similar physiologic structure in animal tissue. This study was continued on humans, 74 patients with injuries to the following anatomic locations: ankle and knee, bilaterally, Achilles tendon; epicondylitis; shoulder; wrist; interphalangeal joints of hands, unilaterally. All patients has surgery prior to LLLT. Two laser devices were used: infrared diode laser (GaAIAs) 830 nm continuous wave for treatment of trigger points (TPs) and HeNe 632.8 nm combined with diode laser 904 nm pulsed wave for scanning procedure. Both were applied as monotherapy during the study. Results were observed and measured according to these clinical parameters: redness, heat, pain, swelling and loss of function, and finally submitted to statistical analysis via chi2 test. Results: After comparing the healing process between two groups of patients, the following results were noted: wound healing was significantly accelerated (25%-35%) in the patients treated with LLLT. Pain relief and functional recovery of those treated with LLLT were significantly improved compared to untreated patients. In addition to accelerated wound healing, LLLT for postoperative sport-and traffic-related injuries avoids side effects of drugs, accelerates functional recovery, allows earlier return to work, training and sport competition.
Laser and Sports Medicine in Plastic and Reconstructive Surgery
Junichiro Kubota M.D.
Flap survival with diode laser therapy: Skin flap or graft surgery are major procedures in plastic and reconstructive surgery. Skin flap necrosis has been a problem. The author reported on the enhanced blood flow following the low reactive laser therapy in skin flaps. The 830 nm diode laser (20 – 60 mw) irradiated flaps showed a greater perfusion, a greater number of blood vessels, and a higher rate of survival areas than the control flaps in the rat models and clinical cases. Improvement of wound healing with diode laser therapy: Diode laser therapy was indicated for traumatic skin ulcers from sport activities and traffic accidents which were resistant to conservative treatment. The diode laser system with a wavelength of 830 nm. and output power of 150or 1000mw in continuous wave was applied with the non-contact method to the area on the wound for one minute once a day every day during the treatment period. The diode laser was used successfully for the rapid enhanced healing of traumatic skin ulcers.
Discussion: Most injured patients hope to avoid a surgical operation, trying instead conservative treatments. The diode laser therapy improved the flap circulation and wound healing of severe skin ulcers. This therapy has been applied for temporomandibular joint pain and favorable results were obtained. The diode laser therapy proved to be particularly effective for pain attenuation. The diode laser therapy offers an additional convenient, safe, and side-effect free method. On the other hand, the Q-switched Nd:YAG laser system consistently achieved good results concomitant with easy and safe operation, with lightening of the target lesions.
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