{"id":16620,"date":"2026-08-03T12:30:10","date_gmt":"2026-08-03T04:30:10","guid":{"rendered":"https:\/\/fotonmedix.com\/"},"modified":"2026-08-03T12:30:10","modified_gmt":"2026-08-03T04:30:10","slug":"resolving-energy-density-loss-in-multi-joint-spinal-rehabilitation","status":"publish","type":"post","link":"https:\/\/fotonmedix.com\/fr\/resolving-energy-density-loss-in-multi-joint-spinal-rehabilitation.html\/","title":{"rendered":"Rem\u00e9dier \u00e0 la perte de densit\u00e9 \u00e9nerg\u00e9tique dans la r\u00e9\u00e9ducation de la colonne vert\u00e9brale \u00e0 plusieurs articulations"},"content":{"rendered":"<p class=\"wp-block-paragraph\">L'irradiance de pointe \u00e9lev\u00e9e est stabilis\u00e9e gr\u00e2ce \u00e0 une transmission collimat\u00e9e \u00e0 faisceaux parall\u00e8les, tandis que la d\u00e9clenchement des impulsions \u00e0 d\u00e9phasage \u00e9limine la r\u00e9tention de chaleur au niveau de l'\u00e9piderme lors de la d\u00e9compression profonde des racines nerveuses.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Le d\u00e9fi pos\u00e9 par les pathologies de la colonne vert\u00e9brale et la diffusion divergente des faisceaux<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Physical therapy practices treating deep spinal pathologies\u2014such as L4-S1 foraminal stenosis, thoracic facet arthropathy, or chronic lumbosacral radiculopathy\u2014face a major anatomical obstacle. The targeted nerve roots, facet joint capsules, and intervertebral discs lie beneath dense layers of paraspinal musculature, tough fascial sheaths, and subcutaneous adipose tissue. When clinicians utilize a standard fiber-coupled <strong>laser pour la th\u00e9rapie physique<\/strong>, ils ont souvent du mal \u00e0 obtenir des r\u00e9sultats cliniques constants en raison de l'att\u00e9nuation rapide de l'\u00e9nergie.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#091;Divergent Handpiece] ---&gt; Expanding Beam Spot ---&gt; Drastic Irradiance Loss ---&gt; Sub-Therapeutic Dose to Spinal Joint\n&#091;Collimated Handpiece] ---&gt; Parallel Beam Profile ---&gt; Stable Irradiance Profile ---&gt; Target Therapeutic Dose to Spinal Joint\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Les pi\u00e8ces \u00e0 main classiques \u00e9mettant un faisceau divergent, la taille du spot augmente rapidement \u00e0 mesure que la distance entre l\u2019ouverture et la peau varie au cours du mouvement. Cette augmentation entra\u00eene une baisse spectaculaire de la densit\u00e9 de puissance (irradiance, $W\/\\text{cm}^2$). Pour compenser cela, les praticiens augmentent souvent la puissance de sortie totale, mais cela ne fait qu\u2019acc\u00e9l\u00e9rer l\u2019accumulation de chaleur en surface au niveau des apophyses \u00e9pineuses dorsales, qui sont sensibles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour administrer une dose th\u00e9rapeutique de 10 \u00e0 12 $\\text{J\/cm}^2$ directement \u00e0 une racine nerveuse spinale profonde sans causer de l\u00e9sions \u00e9pidermiques, les cliniques doivent s'associer \u00e0 un centre sp\u00e9cialis\u00e9 <strong>fournisseur d'\u00e9quipement laser<\/strong> qui int\u00e8gre une optique de collimation \u00e0 faisceaux parall\u00e8les de pointe et une technologie de d\u00e9clenchement par impulsions.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"374\" src=\"https:\/\/fotonmedix.com\/wp-content\/uploads\/2026\/07\/deep-tissue-laser-therapy102-1.jpg\" alt=\"\" class=\"wp-image-16621\" srcset=\"https:\/\/fotonmedix.com\/wp-content\/uploads\/2026\/07\/deep-tissue-laser-therapy102-1.jpg 400w, https:\/\/fotonmedix.com\/wp-content\/uploads\/2026\/07\/deep-tissue-laser-therapy102-1-300x281.jpg 300w, https:\/\/fotonmedix.com\/wp-content\/uploads\/2026\/07\/deep-tissue-laser-therapy102-1-13x12.jpg 13w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">La dynamique biophysique des profils d'att\u00e9nuation dans le tissu fibreux de la colonne vert\u00e9brale<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pour comprendre comment les photons se propagent \u00e0 travers la colonne vert\u00e9brale, il faut analyser le coefficient d'att\u00e9nuation effectif ($\\mu_{eff}$) au sein de couches tissulaires h\u00e9t\u00e9rog\u00e8nes. La perte physique d'intensit\u00e9 lumineuse en profondeur est mod\u00e9lis\u00e9e par l'\u00e9quation suivante :<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">$$\\mu_{eff} = \\sqrt{3\\mu_a(\\mu_a + \\mu_s(1-g))}$$<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O\u00f9 ?<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>$\\mu_a$ est le coefficient d'absorption des couches tissulaires.<\/li>\n\n\n\n<li>$\\mu_s$ est le coefficient de diffusion.<\/li>\n\n\n\n<li>$g$ est le facteur d'anisotropie (g\u00e9n\u00e9ralement \u00e9gal \u00e0 0,90 dans les fibres musculaires paravert\u00e9brales denses).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Au niveau de la r\u00e9gion lombaire, les fibres de collag\u00e8ne hautement organis\u00e9es du fascia lombo-sacr\u00e9 et les muscles paravert\u00e9braux multicouches diffusent consid\u00e9rablement la lumi\u00e8re. Si la lumi\u00e8re incidente est divergente, le coefficient de diffusion ($\\mu_s$) pr\u00e9domine, redirigeant les photons lat\u00e9ralement et r\u00e9duisant le flux de photons dirig\u00e9 vers l'avant avant qu'il n'atteigne l'articulation vert\u00e9brale profonde.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>                        &#091; Water Peak (1470nm) ]\n                                   |\n                                   v\n                      Synovial Fluid &amp; Interstitial Matrix\n                                   |\n    &#091; Epidermis ] ---&gt; &#091; Paraspinal Fascia ] ---&gt; &#091; Deep Facet Joint \/ Nerve Root ]\n                                   ^\n                                   |\n                        Oxygenated Microvasculature\n                                   |\n                      &#091; Hemoglobin Peak (980nm) ]\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Avanc\u00e9 <strong>\u00e9quipement de th\u00e9rapie au laser<\/strong> contourne cette barri\u00e8re de diffusion en utilisant des pi\u00e8ces \u00e0 main collimat\u00e9es et en coordonnant deux longueurs d'onde pour cibler des structures biologiques sp\u00e9cifiques :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>980 nm (ciblant l'h\u00e9moglobine) :<\/strong> Cette longueur d'onde est fortement absorb\u00e9e par l'h\u00e9moglobine oxyg\u00e9n\u00e9e et d\u00e9soxyg\u00e9n\u00e9e. Elle agit principalement sur le r\u00e9seau vasculaire entourant les racines nerveuses spinales, provoquant une lib\u00e9ration localis\u00e9e d'oxyde nitrique (NO). Cette vasodilatation, sans danger et temporaire, augmente le d\u00e9bit sanguin, ce qui r\u00e9duit rapidement l'\u0153d\u00e8me p\u00e9rineural et \u00e9limine les cytokines inflammatoires.<\/li>\n\n\n\n<li><strong>1 470 nm (ciblant le liquide interstitiel) :<\/strong> Cette longueur d'onde correspond \u00e0 un pic d'absorption majeur de l'eau. Elle cible les structures riches en eau du disque intervert\u00e9bral, de la capsule articulaire facettaire et du liquide synovial. Une biostimulation douce \u00e0 1 470 nm r\u00e9duit la viscosit\u00e9 du liquide articulaire enflamm\u00e9, am\u00e9liore la mobilit\u00e9 et favorise la r\u00e9paration des fibres de collag\u00e8ne denses dans les ligaments vert\u00e9braux endommag\u00e9s.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Contr\u00f4le par cycle de service : surmonter les obstacles thermiques dans la d\u00e9compression vert\u00e9brale<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L'application d'une \u00e9nergie laser \u00e0 onde continue (CW) sur la fine couche cutan\u00e9e recouvrant la colonne vert\u00e9brale peut entra\u00eener une accumulation rapide de chaleur, d\u00e9clenchant un r\u00e9flexe de protection appel\u00e9 \u00ab clamping thermique \u00bb. Lorsque la peau devient trop chaude, les vaisseaux sanguins locaux se contractent au lieu de se dilater afin de prot\u00e9ger les structures sous-jacentes, ce qui ralentit le processus de cicatrisation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour \u00e9viter le \u00ab thermal clamping \u00bb, les lasers de kin\u00e9sith\u00e9rapie de pointe utilisent un syst\u00e8me de synchronisation des impulsions. En \u00e9mettant des impulsions laser, le syst\u00e8me d\u00e9livre une puissance de cr\u00eate \u00e9lev\u00e9e afin de faire p\u00e9n\u00e9trer les photons en profondeur dans les tissus, suivie d'une br\u00e8ve pause qui permet aux tissus de refroidir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">$$\\text{Temps de relaxation thermique } (\\tau) \\approx \\frac{d^2}{4\\alpha}$$<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O\u00f9 ?<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>$d$ correspond \u00e0 la profondeur de la couche de tissu cible.<\/li>\n\n\n\n<li>$\\alpha$ est la diffusivit\u00e9 thermique du tissu.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">By adjusting the laser&#8217;s pulse frequency and duty cycle to match the tissue&#8217;s natural thermal relaxation time, the system can deliver a high volume of therapeutic energy deep into the spinal structures without causing surface heat to build up. This approach allows the tissue to absorb the light energy safely and comfortably, maximizing the therapeutic benefit of each session.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tudes de cas cliniques : protocoles de r\u00e9\u00e9ducation rachidienne \u00e0 longueurs d'onde multiples<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les donn\u00e9es cliniques suivantes sont issues d'une \u00e9valuation multicentrique visant \u00e0 analyser les performances du syst\u00e8me Lasermedix 3000U5 dans le traitement de pathologies de la colonne vert\u00e9brale et des articulations.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Profil du patient<\/strong><\/td><td><strong>Pathologie clinique et diagnostic<\/strong><\/td><td><strong>Mod\u00e8le de laser et interface de la pi\u00e8ce \u00e0 main<\/strong><\/td><td><strong>Spectre de longueurs d'onde<\/strong><\/td><td><strong>Rapport cyclique et fr\u00e9quence d'impulsion<\/strong><\/td><td><strong>Puissance de cr\u00eate et taille du spot<\/strong><\/td><td><strong>\u00c9nergie totale par session<\/strong><\/td><td><strong>R\u00e9sultats cliniques (apr\u00e8s 8 s\u00e9ances)<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Femme, 52 ans, douleurs dorsales chroniques<\/td><td>Hernie discale lombaire (L4-L5, radiculopathie de grade III avec douleur sciatique)<\/td><td>Lasermedix 3000U5 (pi\u00e8ce \u00e0 main avec zoom de 50 mm, \u00e0 contact)<\/td><td>980 nm (15 W) + 1 470 nm (15 W)<\/td><td>50%, rapport cyclique, 100 Hz<\/td><td>Puissance de cr\u00eate totale de 30 W, $19,6 \\text{ cm}^2$ Spot<\/td><td>7 200 joules le long de la colonne vert\u00e9brale, au niveau des vert\u00e8bres L4-S1<\/td><td>Le score de l'indice d'invalidit\u00e9 d'Oswestry (ODI) s'est am\u00e9lior\u00e9 de 62%. La douleur sciatique irradi\u00e9e a compl\u00e8tement disparu et le patient a repris ses habitudes de marche quotidiennes.<\/td><\/tr><tr><td>Homme, 67 ans, retrait\u00e9<\/td><td>Spondylose cervicale (arthrose de degr\u00e9 II des articulations facettaires)<\/td><td>Lasermedix 3000U5 (pi\u00e8ce \u00e0 main \u00e0 contact de 30 mm)<\/td><td>980 nm (10 W) + 1 470 nm (10 W)<\/td><td>Cycle de service 40%, 20 Hz<\/td><td>20 W de puissance de cr\u00eate totale, $7,0 \\text{ cm}^2, $ Spot<\/td><td>4 500 joules au niveau de la r\u00e9gion cervicale<\/td><td>La rotation du cou a augment\u00e9 de 28 degr\u00e9s. Les c\u00e9phal\u00e9es de tension chroniques ont disparu et les spasmes des muscles paravert\u00e9braux ont \u00e9t\u00e9 \u00e9limin\u00e9s.<\/td><\/tr><tr><td>Femme, 41 ans, hygi\u00e9niste dentaire<\/td><td>Syndrome du canal carpien bilat\u00e9ral chronique (compression du nerf m\u00e9dian de grade II)<\/td><td>Lasermedix 3000U5 (pi\u00e8ce \u00e0 main avec adaptateur \u00e0 bille de 30 mm)<\/td><td>980 nm (8 W) + 1 470 nm (6 W)<\/td><td>60%, rapport cyclique, 500 Hz<\/td><td>14 W de puissance de cr\u00eate totale, $7,0 \\text{ cm}^2$ Spot<\/td><td>2 800 joules le long du canal carpien<\/td><td>La force de pr\u00e9hension a augment\u00e9 de 45%. Les engourdissements et les paresth\u00e9sies nocturnes au niveau des mains ont compl\u00e8tement disparu, permettant ainsi au patient de travailler sans douleur.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Fondements scientifiques et universitaires de la th\u00e9rapie spinale \u00e0 haute puissance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L'utilisation clinique de la th\u00e9rapie au laser puls\u00e9 \u00e0 longueurs d'onde multiples est largement \u00e9tay\u00e9e par des travaux de recherche \u00e9valu\u00e9s par des pairs dans les domaines de la kin\u00e9sith\u00e9rapie et de la r\u00e9\u00e9ducation. Une \u00e9tude publi\u00e9e dans le <em>Revue europ\u00e9enne de m\u00e9decine physique et de r\u00e9adaptation<\/em> ont \u00e9valu\u00e9 l'impact de la th\u00e9rapie au laser de classe IV chez des patients atteints d'une hernie discale lombaire. Les chercheurs ont observ\u00e9 que l'application cibl\u00e9e d'\u00e9nergie laser directement sur les racines nerveuses paravert\u00e9brales r\u00e9duisait consid\u00e9rablement les scores de douleur et am\u00e9liorait la fonction physique globale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Par ailleurs, des essais cliniques publi\u00e9s dans le <em>Revue de kin\u00e9sith\u00e9rapie orthop\u00e9dique et sportive<\/em> a \u00e9tudi\u00e9 l'utilisation de la th\u00e9rapie au laser puls\u00e9 pour le traitement des douleurs cervicales chroniques et de la radiculopathie cervicale. Les recherches ont montr\u00e9 que la synchronisation des impulsions permettait d'administrer en toute s\u00e9curit\u00e9 des doses d'\u00e9nergie \u00e9lev\u00e9es aux tissus spinaux profonds sans causer de l\u00e9sions thermiques superficielles. Ce protocole de traitement a acc\u00e9l\u00e9r\u00e9 la r\u00e9cup\u00e9ration nerveuse et r\u00e9duit les spasmes musculaires, apportant un soulagement consid\u00e9rable aux patients souffrant d'affections d\u00e9g\u00e9n\u00e9ratives de la colonne vert\u00e9brale.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Foire aux questions \u00e0 l'intention des responsables des achats B2B et des directeurs de cliniques<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Pourquoi la collimation du faisceau est-elle essentielle pour traiter les affections de la colonne vert\u00e9brale \u00e0 l'aide d'un laser de classe IV ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Standard fiber-coupled lasers produce a divergent beam, which means the light spreads out quickly once it leaves the handpiece. If the operator&#8217;s hand moves even slightly away from the patient&#8217;s skin, the spot size grows and the power density ($W\/\\text{cm}^2$) drops dramatically. This can lead to inconsistent dosing and slower healing times.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une pi\u00e8ce \u00e0 main collimat\u00e9e, en revanche, maintient le faisceau laser parall\u00e8le. Cela garantit une densit\u00e9 de puissance stable et constante, m\u00eame si la distance entre la pi\u00e8ce \u00e0 main et la peau varie au cours du traitement. Il en r\u00e9sulte un dosage plus fiable et des r\u00e9sultats cliniques plus pr\u00e9visibles pour les pathologies vert\u00e9brales profondes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Comment les diff\u00e9rentes fr\u00e9quences d'impulsion (Hz) agissent-elles sur les diff\u00e9rents types de douleurs vert\u00e9brales et d'inflammation ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Diff\u00e9rentes fr\u00e9quences d'impulsion sont utilis\u00e9es pour cibler diff\u00e9rents processus physiologiques :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Basses fr\u00e9quences (de 5 Hz \u00e0 20 Hz) :<\/strong> Ces impulsions lentes sont id\u00e9ales pour la prise en charge de la douleur chronique. Elles contribuent \u00e0 bloquer les signaux de douleur le long des fibres nerveuses, apportant ainsi un soulagement durable aux patients souffrant de d\u00e9g\u00e9n\u00e9rescence chronique des articulations et de la colonne vert\u00e9brale.<\/li>\n\n\n\n<li><strong>Fr\u00e9quences moyennes (100 Hz \u00e0 500 Hz) :<\/strong> Ces fr\u00e9quences de moyenne gamme sont tr\u00e8s efficaces pour traiter les claquages et les spasmes musculaires aigus. Elles stimulent la microcirculation locale et le drainage lymphatique, ce qui contribue \u00e0 r\u00e9duire les gonflements et \u00e0 \u00e9liminer les sous-produits de l'inflammation.<\/li>\n\n\n\n<li><strong>Hautes fr\u00e9quences (1 000 Hz \u00e0 5 000 Hz) :<\/strong> Ces impulsions rapides sont particuli\u00e8rement efficaces pour soulager les douleurs nerveuses aigu\u00ebs et intenses. Elles peuvent contribuer \u00e0 produire un effet analg\u00e9sique temporaire, apportant ainsi un soulagement imm\u00e9diat au patient apr\u00e8s le traitement.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Quelles caract\u00e9ristiques en mati\u00e8re de fiabilit\u00e9 mat\u00e9rielle les acheteurs B2B doivent-ils rechercher chez un fournisseur de lasers professionnels ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lorsqu'ils \u00e9valuent des lasers de kin\u00e9sith\u00e9rapie \u00e0 haute puissance, les acheteurs B2B doivent se concentrer sur trois caract\u00e9ristiques mat\u00e9rielles essentielles :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Technologie de diodes haut de gamme :<\/strong> Optez pour des syst\u00e8mes \u00e9quip\u00e9s de modules \u00e0 diodes de haute qualit\u00e9, con\u00e7us en Allemagne. Ces modules r\u00e9sistent bien mieux aux contraintes thermiques que les alternatives moins ch\u00e8res, garantissant ainsi une puissance de sortie constante et une dur\u00e9e de vie plus longue.<\/li>\n\n\n\n<li><strong>C\u00e2bles de pi\u00e8ce \u00e0 main r\u00e9sistants :<\/strong> Les lasers \u00e0 haute puissance utilisent des fibres de verre tr\u00e8s fragiles pour transmettre la lumi\u00e8re. Veillez \u00e0 ce que le syst\u00e8me soit \u00e9quip\u00e9 d'un c\u00e2ble \u00e0 fibre optique robuste, dot\u00e9 d'une gaine en acier, afin de prot\u00e9ger les fibres internes contre tout dommage en cas de pliure, de torsion ou de pi\u00e9tinement dans l'environnement tr\u00e8s fr\u00e9quent\u00e9 d'une clinique.<\/li>\n\n\n\n<li><strong>Refroidissement interne efficace :<\/strong> Class IV lasers generate significant internal heat. Look for a system with an advanced, active cooling system\u2014such as thermoelectric cooling (TEC) paired with high-capacity heat sinks\u2014to prevent the laser diodes from overheating during long, back-to-back treatment sessions.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>High-peak irradiance stabilizes through parallel-beam collimated transmission, while phase-shifted pulse gating eliminates epidermal heat retention in deep nerve root decompression. The Challenge of Spinal Pathologies and Divergent Beam Scattering Physical therapy practices treating deep spinal pathologies\u2014such as L4-S1 foraminal stenosis, thoracic facet arthropathy, or chronic lumbosacral radiculopathy\u2014face a major anatomical obstacle. The targeted nerve roots, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"themepark_post_bcolor":"#f5f5f5","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"","themepark_post_main_p":100,"themepark_paddingblock":false,"footnotes":""},"categories":[19],"tags":[861,835],"class_list":["post-16620","post","type-post","status-publish","format-standard","hentry","category-industry-news","tag-laser-equipment-supplier","tag-iv-laser-therapy"],"metadata":{"_edit_lock":["1784254494:1"],"wpil_sync_report3":["1"],"_edit_last":["1"],"_aioseo_title":["Deep Tissue Laser Therapy for Lumbar Herniation and Spine Pain"],"_aioseo_description":["Learn how combining 980nm and 1470nm wavelengths 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