PainExam Podcast David Rosenblum, MD

PainExam Show Notes: Mandibular Division of the Trigeminal Nerve Block with Dr. David Rosenblum VIsit the NRAP Academy for the PainExam Board Prep!
Introduction Host: Dr. David Rosenblum Topic: Mandibular Division of the Trigeminal Nerve Block for Cancer Pain Management Techniques: Ultrasound and Fluoroscopic Guidance Overview Purpose: Alleviate chronic facial pain, specifically in cancer patients suffering from trigeminal neuralgia or other related conditions. Focus: Detailed discussion on the anatomy, clinical presentation, and procedural techniques for effective nerve block. Anatomy of the Mandibular Nerve Origin: Mandibular nerve is a branch of the trigeminal nerve (cranial nerve V). Pathway: Exits the middle cranial fossa through the foramen ovale and descends between the lateral and medial pterygoid muscles. Sensory Innervation: Anterior two-thirds of the tongue Teeth and mucosa of the mandible Skin of the chin and lower lip Skin over the mandible (excluding the mandibular angle) Tragus and anterior part of the ear Posterior part of the temporalis muscle up to the scalp Ultrasound-Guided Technique Patient Positioning: Patient lies on their side with the affected side facing upward. Transducer Selection: Curvilinear transducer preferred for deeper structures. Transducer Placement: Place distal and parallel to the zygomatic arch to bridge the coronoid and condylar processes. Anatomical Landmarks: Identify the lateral pterygoid muscle and plate. Use power Doppler to locate the sphenoid palatine artery. Needle Trajectory: Introduce the needle using an out-of-plane approach to target the pterygopalatine fossa (anterior to the lateral pterygoid plate). For the mandibular nerve block, target the area posterior to the lateral pterygoid plate between the medial and lateral pterygoid muscles. Electrostimulation (Optional): Utilize a 22G, 10 cm insulated short beveled needle connected to a peripheral nerve simulator. Position confirmed by motor response from the temporalis and masseter muscles. Fluoroscopic-Guided Technique Patient Positioning: Similar to ultrasound guidance, patient lies on their side with the affected side facing upward. C-arm Positioning: Position the C-arm to visualize the foramen ovale. Needle Insertion: Insert the needle under fluoroscopic guidance towards the foramen ovale. Contrast Injection: Confirm needle placement with contrast injection. Anesthetic Administration: Administer local anesthetic and/or neurolytic agents. Clinical Symptoms and Diagnosis Symptoms: Unilateral sharp, stabbing, or burning pain in the mandibular nerve distribution. Pain triggered by activities such as eating, talking, washing the face, or cleaning the teeth. Diagnostic Imaging: MRI or CT scans to identify causes like vascular compression, mass lesions, or fractures. Complications and Considerations Potential Complications: Bleeding, hematoma, infection, and hypersensitivity reaction to the injectate. Serious complications from neurolytic agents like permanent sensory deficit and tissue necrosis. Alternative Treatments: PNS? Radiofrequency or cryoablation for recalcitrant cases. Conclusion Efficacy: Ultrasound and fluoroscopic guidance provide precise targeting of the affected nerves, minimizing collateral damage. Safety: Routine use of power Doppler imaging to avoid injury to surrounding vessels. Recommendation: Consider these techniques for patients unresponsive to oral medications or unsuitable for surgery. These show notes provide a comprehensive overview of the discussion, highlighting key points on the anatomy, technique, and clinical considerations for mandibular nerve blocks in cancer patients.


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Dr. Rosenblum addresses 2 Studies on this Pain Management Journal Club Podcast
Article 1: 
The Treatment of Bone Marrow Lesions Associated with Advanced Knee Osteoarthritis: Comparing Intraosseous and Intraarticular Injections with Bone Marrow Concentrate and Platelet Products
Article 2:
Autologous US-guided PRP injection versus US-guided focal extracorporeal shock wave therapy for chronic lateral epicondylitis: Aminimum of 2-year follow-up retrospective comparative study
Editorial: 
Dr. Rosenblum poses some important questions:
Why are regenerative therapies not covered?  Why is CMS limiting trigger point injections and not paying for certain peripheral nerve blocks? Who is making the decision? Do lobbying groups or big pharma have a role?
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References
Alessio-Mazzola M, Repetto I, Biti B, Trentini R, Formica M, Felli L. Autologous US-guided PRP injection versus US-guided focal extracorporeal shock wave therapy for chronic lateral epicondylitis: A minimum of 2-year follow-up retrospective comparative study. Journal of Orthopaedic Surgery. 2018;26(1).
Centeno, Christopher, et al. "The treatment of bone marrow lesions associated with advanced knee osteoarthritis: comparing intraosseous and intraarticular injections with bone marrow concentrate and platelet products." Pain Physician24.3 (2021): E279.

 Join us on this episode of the PainExam Podcast where rising star, Christopher Robinson, MD PhD discusses his upcoming paper on exosomes featuring some of the largest names in pain managment.  Dr. Rosenblum also alludes to degenerative disc disease being a partially infectious podcast.  
Other topics discussed on this podcast:
The Anesthesiology Job Market
Pain Management Fellowship 
Duration of Pain Management Fellowships
Should Pain Management be an Independent Residency?
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Journal Club:  Treating Degenerative Disc Disease with Leukocyte Rich PRP
Dr. Rosenblum discusses an article written by Dr. Gregory Lutz describing Leukocyte RIch PRP's role in treating Degenerative Disc Disease and the theory that there is an infectious disease component to disc injury. 
Dr. Lutz describes multiple articles, as well as anectodal experience in which bacterial infectious was demonstrated in pathological discs, and PRP was successful in alleviating symptoms, modic changes and improved clinical as well as radiographic appearance.
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References
Lutz, Gregory E. "Intradiscal Leukocyte Rich Platelet Rich Plasma for Degenerative Disc Disease." Physical Medicine and Rehabilitation Clinics of North America 34.1 (2023): 117-133.https://www.binasss.sa.cr/bibliotecas/bhm/feb23/61.pdf

Dr. Rosenblum reviews an article by Dr. Reuben Ingber regarding the use of iliopsoas trigger point dry needling and therapeutic stretching in the treatement of 6 consecutive patients wiht acute lumbar radiculitis and foot drop.
 
 
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References
Reuben S. Ingber,
Iliopsoas trigger point dry needling and therapeutic stretching in the treatment of a series of six consecutive patients presenting with acute lumbar radiculitis and foot drop,
Journal of Bodywork and Movement Therapies,
Volume 36,
2023,
Pages 1-4,
ISSN 1360-8592,
https://www.cms.gov/medicare-coverage-database/view/article.aspx?articleId=57702#:~:text=No%20more%20than%203%20Trigger,group%20are%20not%20billed%20separately.
CMS National Coverage Policy

 Dr. Rosenblum describes a patient with chronic shoulder pain who failed shoulder replacement, steroid injections, nerve blocks, cryotherapy, and peripheral nerve stimulation of the axillary and suprascapular nerve block.  In this podcast, he discusses his perfomance of Shoulder Radiofrequency Ablation targeting the articular branches of the suprascapular nerve, axillary nerve, nerve to subscapularis and lateral pectoral nerve.  
Reference:
https://www.asra.com/news-publications/asra-newsletter/newsletter-item/asra-news/2020/11/01/how-i-do-it-shoulder-articular-nerve-blockade-and-radiofrequency-ablation
 
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PainExam App almost ready  Pain Management Board Prep migrated to NRAPpain.org AnesthesiaExam Board Prep migrated to NRAPpain.org PMRExam Board Prep migrated to NRAPpain.org

 
Live Workshop Calendar


Ultrasound Interventional Pain Course Registration 
 
 
For Anesthesia Board Prep Click Here!