Top Tweets for #GenicularNerves

8 months ago

🦴✨ Rethinking Knee Denervation Through Anatomy ✨🦴 #InterventionalPain #KneePain #PeriostealInnervation #BonePain #KneeOA #TotalKneeArthroplasty #GenicularNerves #AnatomyMatters #PainMedicine #RegionalAnesthesia Pleased to share that this important article is now officially published in Interventional Pain Medicine 🎉 🔍 Key Highlights you shouldn’t miss: ✅ Maps the distribution of epiphyseal nutrient foramina in the distal femur ✅ Challenges oversimplified concepts of anterior knee denervation ✅ Reinforces that bone & periosteum are not single-source pain structures ✅ Offers critical anatomical insights for knee OA and post-TKA pain ✅ Supports a move toward target-specific and patient-specific interventions 🧠 Take-home message: Effective knee pain interventions begin with respecting anatomical complexity — not one nerve, not one plane, not one solution. 📖 Read the full article here: 👉 https://t.co/xGRAAP4oe5

KartikBSonawane's tweet photo. 🦴✨ Rethinking Knee Denervation Through Anatomy ✨🦴

#InterventionalPain #KneePain #PeriostealInnervation #BonePain #KneeOA #TotalKneeArthroplasty #GenicularNerves #AnatomyMatters #PainMedicine #RegionalAnesthesia

Pleased to share that this important article is now officially published in Interventional Pain Medicine 🎉

🔍 Key Highlights you shouldn’t miss:

✅ Maps the distribution of epiphyseal nutrient foramina in the distal femur
✅ Challenges oversimplified concepts of anterior knee denervation
✅ Reinforces that bone & periosteum are not single-source pain structures
✅ Offers critical anatomical insights for knee OA and post-TKA pain
✅ Supports a move toward target-specific and patient-specific interventions

🧠 Take-home message:

Effective knee pain interventions begin with respecting anatomical complexity — not one nerve, not one plane, not one solution.

📖 Read the full article here:
👉 https://t.co/xGRAAP4oe5

591

Dr.Kartik Sonawane

@KartikBSonawane

about 1 year ago

🎯🧠Decoding Genicular Nerves: Anatomy, Nociception, & Their Role in Knee Pain After TKA🦿 #GenicularNerves #KneeAnatomy #PostTKAPain #NeuropathicPain #RegionalAnesthesia #PainMechanisms #TargetedBlocks #UltrasoundGuidedBlocks #AnatomyDecoded #ClinicalAnatomy #Neuroanatomy #PainAfterTKA #AnatomyMatters #TipOfTheDay #MyRATips Tip of the Day: 1. 🔍 What Does "Genicular" Mean? ♦The term “genicular” comes from the Latin "genu", meaning knee. ♦These nerves supply the area around the knee, particularly its capsular, ligamentous, & periarticular structures. ♦Also influences vascular control and pain transmission. ♦Approximately 14 genicular nerves (mixed sensory/motor/autonomic) from 5 major nerves (FN, OBN, SCN, TN, CPN). ♦They follow a predictable course, often accompanying genicular arteries. ♦Essential target in modern-day pain management strategies, such as genicular nerve blocks (GNB) and radiofrequency ablation (RFA). 2. ❓ Is the Infrapatellar Branch a Genicular Nerve? 🚫 No, the IPBSN is not classified as a genicular nerve. 🔹Primarily a cutaneous nerve, but may contribute to the inferomedial anterior capsule, alongside the IMGN. 🔹Not traveling with genicular arteries or through periosteum. 🔹Responsible for selective anterior knee pain syndromes. 🔹Usually not targeted in GNB/RFA unless for cutaneous neuroma or peripatellar pain 3. 🎯 Genicular vs Articular Branches ⚡Genicular Nerves: 📍 Location: Periarticular soft tissues (around bones, ligaments) 🎯 Function: Involved in pain transmission, proprioception, & autonomic vascular tone 🔥 Nociceptor Density: High density – major contributors to persistent pain 🧠 Clinical Targetability: Precisely located & often ultrasound-visible for blocks or RFA 🦵 Role Post-TKA: Remain active and relevant even after joint replacement 🧩 Articular Branches: 📍 Location: Confined to joint capsule & synovial lining 🎯 Function: Transmit pain only; minimal role in proprioception or autonomic function 🔥 Nociceptor Density: Variable – may be low in some areas 🧠 Clinical Targetability: Less consistently found; harder to visualize or block directly 🦵 Role Post-TKA: Often resected or disrupted during surgery, limiting their postoperative contribution 4. 🔄 Genicular Nerves Contribute to the Plexuses! 📍Think of genicular nerves as the named highways, and the plexuses as local neighborhood streets formed by their fine branches or communicating fibers. 📍Genicular nerves don’t just function independently - they feed into articular plexuses through tiny terminal branches 🔴 Peripatellar Plexus 🔹Formed by: saphenous, LFCN, SMGN, SLGN 🔹Supplies: skin, retinacula around the patella 🟡 Subsartorial Plexus 🔸Formed by: saphenous, NVM, PDOBN, SMGN 🔸Supplies: medial periosteum & anteromedial capsule 🔵 Popliteal Plexus ◾Formed by: MGN, IMGN, ILGN, tibial & sciatic articular branches ◾Supplies: posterior capsule,cruciate ligaments ➡ Thus, genicular nerves are not isolated but functionally interwoven into these plexuses via communicating fascicles - important for both superficial & deep pain transmission. 5. 🔬 Nociceptors in Genicular Nerves? Nociceptors are pain-sensing free nerve endings strategically located at, 🔴 Periarticular Soft Tissue 🔺Subsynovial tissue 🔺Joint capsule (especially anterior) 🔺Periosteum around femoral & tibial condyles 🔺Retinacula and meniscal horns 🟠 Infrapatellar Fat Pad (Hoffa's fat pad) ✦ Highly innervated and richly vascularized ✦ Nociceptors from the femoral & tibial nerves are abundant here ✦ One of the most pain-sensitive areas in the knee 🟡 Perivascular Plexus of Genicular Arteries ❃ Genicular nerves travel with genicular arteries, forming neurovascular bundles. ❃ These perivascular networks carry autonomic & nociceptive fibers ❃ The mechanical stretch, chemical irritation, or hypoxia here can generate significant pain 🔵 Intracapsular Ligaments (MGN) ✿ Enters joint via posterior capsule ✿ Supplies ACL, PCL, & synovial membrane ✿ Nociceptors are densely populated in cruciate ligament insertions 6. 🔧 Post-TKA Changes? 🔧 Anatomical & Functional Changes: 🔸Anterior capsule and fat pad often removed 🔸Periosteum traumatized or replaced by prosthesis 🔸Genicular nerve endings may be transected → neuroma formation 🧠 Resulting Pain Mechanisms: 🔥 Neuropathic pain from cut genicular nerves 🔁 Central sensitization 🧬 Residual nociception from posterior capsule, cruciate remnants, collateral ligaments 7.❓So, Do These Genicular Nerves Transmit Pain After TKA? ✅ Yes — but with altered roles. Despite the resection of anterior nociceptive zones, genicular nerves may still: 🔁 Transmit neuropathic signals from neuroma formation 📤 Relay inflammatory pain from residual structures 🧠 Participate in central sensitization & altered pain processing 8.🎯 Clinical Implication GNBs/RFA can still significantly reduce pain, especially in: 🔹 Post-TKA patients with persistent anterior knee pain 🔹 Patients with neuropathic elements or residual inflammation 🔹 Those with failed prosthetic integration or chronic pain syndromes 💡But, No Role in Immediate Post-TKA PAIN. 🏠✅Take-Home Messages 🔑 ⚡ Genicular nerves are periarticular sensory twigs involved in pain, proprioception, & vascular regulation. 🧠 14 genicular nerves arising from 5 major nerves, targeting anterior, posterior, and periosteal regions. 🔥 Nociceptors reside in the joint capsule, retinaculum, ligaments, and periosteum - not just the synovium. 🦿 Even after TKA, genicular nerves remain active contributors to residual or phantom knee pain. 🩻 Articular branches mainly serve pain-only functions and are often excised or disrupted during TKA. 🧩 Genicular nerves contribute to plexuses like peripatellar, subsartorial, and popliteal, explaining diffuse pain patterns. 💉DSB offers the broadest motor-sparing coverage - anterior, medial, posterior genicular innervation. 🎯 FTB covers anterior-medial capsule (SMGN, NVM, IPBSN) but misses deep/posterior contributors. 🚫 No single block covers all 14 genicular nerves - multimodal or dual-injection strategies are key. 🧭 Targeting genicular nerves via ultrasound or RFA is clinically precise and meaningful for chronic/post-TKA knee pain. But, Not for Acute Post-TKA pain. 📊 Distinction: ⚡ Genicular nerves = high nociceptive density, easy to target 🧩 Articular branches = limited pain role, inconsistent anatomy “Post-TKA pain isn’t always mechanical or inflammatory - it’s neuropathic, & geniculars are the source code.”

KartikBSonawane's tweet photo. 🎯🧠Decoding Genicular Nerves: Anatomy, Nociception, & Their Role in Knee Pain After TKA🦿

#GenicularNerves #KneeAnatomy #PostTKAPain
#NeuropathicPain #RegionalAnesthesia #PainMechanisms #TargetedBlocks #UltrasoundGuidedBlocks #AnatomyDecoded
#ClinicalAnatomy #Neuroanatomy #PainAfterTKA
#AnatomyMatters #TipOfTheDay #MyRATips

Tip of the Day:

1. 🔍 What Does "Genicular" Mean?

♦The term “genicular” comes from the Latin "genu", meaning knee.
♦These nerves supply the area around the knee, particularly its capsular, ligamentous, & periarticular structures.
♦Also influences vascular control and pain transmission.
♦Approximately 14 genicular nerves (mixed sensory/motor/autonomic) from 5 major nerves (FN, OBN, SCN, TN, CPN).
♦They follow a predictable course, often accompanying genicular arteries.
♦Essential target in modern-day pain management strategies, such as genicular nerve blocks (GNB) and radiofrequency ablation (RFA).

2. ❓ Is the Infrapatellar Branch a Genicular Nerve?

🚫 No, the IPBSN is not classified as a genicular nerve.
🔹Primarily a cutaneous nerve, but may contribute to the inferomedial anterior capsule, alongside the IMGN.
🔹Not traveling with genicular arteries or through periosteum.
🔹Responsible for selective anterior knee pain syndromes.
🔹Usually not targeted in GNB/RFA unless for cutaneous neuroma or peripatellar pain

3. 🎯 Genicular vs Articular Branches

⚡Genicular Nerves:
📍 Location: Periarticular soft tissues (around bones, ligaments)
🎯 Function: Involved in pain transmission, proprioception, & autonomic vascular tone
🔥 Nociceptor Density: High density – major contributors to persistent pain
🧠 Clinical Targetability: Precisely located & often ultrasound-visible for blocks or RFA
🦵 Role Post-TKA: Remain active and relevant even after joint replacement

🧩 Articular Branches:
📍 Location: Confined to joint capsule & synovial lining
🎯 Function: Transmit pain only; minimal role in proprioception or autonomic function
🔥 Nociceptor Density: Variable – may be low in some areas
🧠 Clinical Targetability: Less consistently found; harder to visualize or block directly
🦵 Role Post-TKA: Often resected or disrupted during surgery, limiting their postoperative contribution

4. 🔄 Genicular Nerves Contribute to the Plexuses!

📍Think of genicular nerves as the named highways, and the plexuses as local neighborhood streets formed by their fine branches or communicating fibers.
📍Genicular nerves don’t just function independently - they feed into articular plexuses through tiny terminal branches

🔴 Peripatellar Plexus
🔹Formed by: saphenous, LFCN, SMGN, SLGN
🔹Supplies: skin, retinacula around the patella

🟡 Subsartorial Plexus
🔸Formed by: saphenous, NVM, PDOBN, SMGN
🔸Supplies: medial periosteum & anteromedial capsule

🔵 Popliteal Plexus
◾Formed by: MGN, IMGN, ILGN, tibial & sciatic articular branches
◾Supplies: posterior capsule,cruciate ligaments

➡ Thus, genicular nerves are not isolated but functionally interwoven into these plexuses via communicating fascicles - important for both superficial & deep pain transmission.

5. 🔬 Nociceptors in Genicular Nerves?

Nociceptors are pain-sensing free nerve endings strategically located at,

🔴 Periarticular Soft Tissue
🔺Subsynovial tissue
🔺Joint capsule (especially anterior)
🔺Periosteum around femoral & tibial condyles
🔺Retinacula and meniscal horns

🟠 Infrapatellar Fat Pad (Hoffa's fat pad)
✦ Highly innervated and richly vascularized
✦ Nociceptors from the femoral & tibial nerves are abundant here
✦ One of the most pain-sensitive areas in the knee

🟡 Perivascular Plexus of Genicular Arteries
❃ Genicular nerves travel with genicular arteries, forming neurovascular bundles.
❃ These perivascular networks carry autonomic & nociceptive fibers
❃ The mechanical stretch, chemical irritation, or hypoxia here can generate significant pain

🔵 Intracapsular Ligaments (MGN)
✿ Enters joint via posterior capsule
✿ Supplies ACL, PCL, & synovial membrane
✿ Nociceptors are densely populated in cruciate ligament insertions

6. 🔧 Post-TKA Changes?

🔧 Anatomical & Functional Changes:
🔸Anterior capsule and fat pad often removed
🔸Periosteum traumatized or replaced by prosthesis
🔸Genicular nerve endings may be transected → neuroma formation

🧠 Resulting Pain Mechanisms:
🔥 Neuropathic pain from cut genicular nerves
🔁 Central sensitization
🧬 Residual nociception from posterior capsule, cruciate remnants, collateral ligaments

7.❓So, Do These Genicular Nerves Transmit Pain After TKA?

✅ Yes — but with altered roles.
Despite the resection of anterior nociceptive zones, genicular nerves may still:
🔁 Transmit neuropathic signals from neuroma formation
📤 Relay inflammatory pain from residual structures
🧠 Participate in central sensitization & altered pain processing

8.🎯 Clinical Implication
GNBs/RFA can still significantly reduce pain, especially in:
🔹 Post-TKA patients with persistent anterior knee pain
🔹 Patients with neuropathic elements or residual inflammation
🔹 Those with failed prosthetic integration or chronic pain syndromes

💡But, No Role in Immediate Post-TKA PAIN.

🏠✅Take-Home Messages 🔑

⚡ Genicular nerves are periarticular sensory twigs involved in pain, proprioception, & vascular regulation.
🧠 14 genicular nerves arising from 5 major nerves, targeting anterior, posterior, and periosteal regions.
🔥 Nociceptors reside in the joint capsule, retinaculum, ligaments, and periosteum - not just the synovium.
🦿 Even after TKA, genicular nerves remain active contributors to residual or phantom knee pain.
🩻 Articular branches mainly serve pain-only functions and are often excised or disrupted during TKA.
🧩 Genicular nerves contribute to plexuses like peripatellar, subsartorial, and popliteal, explaining diffuse pain patterns.
💉DSB offers the broadest motor-sparing coverage - anterior, medial, posterior genicular innervation.
🎯 FTB covers anterior-medial capsule (SMGN, NVM, IPBSN) but misses deep/posterior contributors.
🚫 No single block covers all 14 genicular nerves - multimodal or dual-injection strategies are key.
🧭 Targeting genicular nerves via ultrasound or RFA is clinically precise and meaningful for chronic/post-TKA knee pain. But, Not for Acute Post-TKA pain.
📊 Distinction:
⚡ Genicular nerves = high nociceptive density, easy to target
🧩 Articular branches = limited pain role, inconsistent anatomy

“Post-TKA pain isn’t always mechanical or inflammatory - it’s neuropathic, & geniculars are the source code.”

Carles Munné @fisiocharlio

almost 3 years ago

Patró innervació de l'articulació de genoll #AidaCateura #genicularnerves #sae2023 @NEOMA_UdG

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