The LightForce® XLi 40W Therapy Laser offers the highest power and fastest treatments in the LightForce® lineup. With up to 40 watts of Class IV power, the XLi treats larger, deeper areas in less time, making it ideal for high-volume practices and performance-driven recovery programs.

Equipped with real-time dosing feedback and a Smart Handpiece, the XLi guides clinicians toward optimal treatment settings automatically, reducing guesswork and ensuring safe, consistent outcomes. Influence® Technology customizes light delivery for each patient, while the Empower IQ™ system, Perfect Protocol™ software, and built-in training resources make operation seamless and intuitive.

Six quick-release treatment heads and LightForce® exclusive Massage Ball Technology provide unmatched flexibility for both targeted and broad applications. Built for durability with premium fiber optics, the XLi is engineered to perform under the demands of elite clinical environments.

Indications: 
Deep Tissue Laser Therapy® is used to treat painful muscles and joints associated with acute and chronic soft tissue injuries. It can also relieve pain and stiffness associated with arthritis and is able to increase localized blood flow. These factors make therapeutic laser a sensible modality choice for post-activity recovery.

Clinically Studied to Help in the Treatment of:
Neck Pain¹
Low Back Pain²
Shoulder Pain³,⁴
Elbow Pain⁵
TMJ ⁶,⁷
Arthritis⁸
Plantar Fasciitis⁹
Sports Injuries¹⁰

CLINICAL STUDIES
¹ Chow RT, Johnson MI, Lopes-Martins RA, Bjordal JM. 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. Lancet. 2009 Dec 5;374(9705):1897-908. doi: 10.1016/S0140-6736(09)61522-1. Epub 2009 Nov 13. Erratum in: Lancet. 2010 Mar 13;375(9718):894. PMID: 19913903.
² Alayat MS, Atya AM, Ali MM, Shosha TM. Long-term effect of high-intensity laser therapy in the treatment of patients with chronic low back pain: a randomized blinded placebo-controlled trial. Lasers Med Sci. 2014 May;29(3):1065-73. doi: 10.1007/s10103-013-1472-5. Epub 2013 Nov 2.
³ Santamato A, Solfrizzi V, Panza F, Tondi G, Frisardi V, Leggin BG, Ranieri M, Fiore P. Short-term effects of high-intensity laser therapy versus ultrasound therapy in the treatment of people with subacromial impingement syndrome: a randomized clinical trial. Phys Ther. 2009 Jul;89(7):643-52.
⁴ Kim SH, Kim YH, Lee HR, Choi YE. Short-term effects of high-intensity laser therapy on frozen shoulder: A prospective randomized control study. Man Ther. 2015 Dec;20(6):751-7. doi: 10.1016/j.math.2015.02.009. Epub 2015 Mar 2. PMID: 25770420.
⁵ Roberts DB, Kruse RJ, Stoll SF. The effectiveness of therapeutic class IV (10 W) laser treatment for epicondylitis. Lasers Surg Med. 2013 Jul;45(5):311-7. doi: 10.1002/lsm.22140. Epub 2013 Jun 3. PMID: 23733499.
⁶ Abbasgholizadeh ZS, Evren B, Ozkan Y. Evaluation of the efficacy of different treatment modalities for painful temporomandibular disorders. Int J Oral Maxillofac Surg. 2020 May;49(5):628-635. doi: 10.1016/j.ijom.2019.08.010. Epub 2019 Sep 21. PMID: 31547949.
⁷ Khairnar S, Bhate K, S N SK, Kshirsagar K, Jagtap B, Kakodkar P. Comparative evaluation of low-level laser therapy and ultrasound heat therapy in reducing temporomandibular joint disorder pain. J Dent Anesth Pain Med. 2019 Oct;19(5):289-294. doi: 10.17245/jdapm.2019.19.5.289. Epub 2019 Oct 30. PMID: 31723669; PMCID: PMC6834715.
⁸ Song HJ, Seo HJ, Kim D. Effectiveness of high-intensity laser therapy in the management of patients with knee osteoarthritis: A systematic review and meta-analysis of randomized controlled trials. J Back Musculoskelet Rehabil. 2020;33(6):875-884. doi: 10.3233/BMR-191738. PMID: 32831189.
⁹ Ordahan B, Karahan AY, Kaydok E. The effect of high-intensity versus low-level laser therapy in the management of plantar fasciitis: a randomized clinical trial. Lasers in Medical Science. 2018;33(6):1363-1369. doi:https://doi.org/10.1007/s10103-018-2497-6
¹⁰ Takenori A, Ikuhiro M, Shogo U, et al. Immediate pain relief effect of low level laser therapy for sports injuries: Randomized, double-blind placebo clinical trial. J Sci Med Sport. 2016;19(12):980-983. doi:10.1016/j.jsams.2016.03.006