Learn MSK Sono

Learn MSK Sono Your resource for training in Musculoskeletal Ultrasound

Don’t Miss the Fluid Hiding in the Recesses 🦵💧Most missed knee effusions aren’t absent… they’re just not where you looke...
04/14/2026

Don’t Miss the Fluid Hiding in the Recesses 🦵💧

Most missed knee effusions aren’t absent… they’re just not where you looked.

Fluid moves freely throughout the joint — so if you’re only checking the suprapatellar recess, you’re leaving blind spots.

🎥 Watch the full reel here:
👉 [https://www.instagram.com/reel/DXHFv5ngHEI/?igsh=OHpuOHJyOWxna2M=]

⸻

🔍 What we’re covering in this video:
• Medial & lateral parapatellar recesses
• Short + long axis views
• Where fluid loves to hide

⸻

📌 Key Takeaways:
• Fluid is mobile — position matters
• Don’t stop at the suprapatellar recess
• Always check medial + lateral recesses
• Use short AND long axis
• Mild flexion helps redistribute fluid

🎯 Complete scan = fewer missed effusions

⸻

🧠 Quick Scan Protocol:
• Suprapatellar recess — short & long axis
• Lateral parapatellar recess — short & long axis
• Medial parapatellar recess — short & long axis

👉 Assess with the knee in mild flexion

👉 Add Power Doppler:
• Evaluate synovium for hyperemia
• Increased Doppler signal → suggests active synovitis
• Helps differentiate simple effusion vs inflammatory process

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🚨 Tuesday Tip with JamieCan you recognize the bare area on shoulder ultrasound?This is a normal region without cartilage...
04/07/2026

🚨 Tuesday Tip with Jamie

Can you recognize the bare area on shoulder ultrasound?

This is a normal region without cartilage — and recognizing it is key to accurate interpretation.

🎥 Watch this quick video to train your eye and feel more confident when scanning:

Follow along for more weekly tips!

04/07/2026

🚨 Shoulder Ultrasound Tip: Know the Bare Area

The “defect” at the rotator cuff footprint is the bare area of the greater tuberosity — a normal region without cartilage coverage.

On ultrasound, it can look:
• Slightly hypoechoic
• Irregular
• Like a small cortical defect

💡 If a tear is present in this region:
It should NOT be described as an articular-surface tear

💡 Memorizing the normal footprint is key to avoiding false positives

Recognizing this = more confident scans and more accurate diagnoses

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Reposting an interesting MSK ultrasound case from my colleague (and co-director of our upcoming course) 👇This is exactly...
03/26/2026

Reposting an interesting MSK ultrasound case from my colleague (and co-director of our upcoming course) 👇

This is exactly the kind of real-world, case-based learning we focus on—understanding pathology, thinking through the diagnosis, and applying it directly in clinical practice.

Our upcoming course is officially sold out 🙌
Thank you to everyone who signed up—really looking forward to it.

If you’re interested in attending a future course, send me a message with your email . I’ll make sure you’re the first to hear when new courses open.

Small group. Big skills. 💪🖥️

See it. Follow it. Question it. 👀The superficial peroneal nerve is small and easy to overlook—but when it becomes enlarg...
03/24/2026

See it. Follow it. Question it. 👀

The superficial peroneal nerve is small and easy to overlook—but when it becomes enlarged at the point where it exits the crural fascia, it’s often a sign of entrapment.

📍 Where to find it:
• Between the peroneus longus and extensor digitorum longus
• Distal lateral leg as it becomes more superficial
• Pierces the crural fascia (anterior to the fibula)
• Becomes subcutaneous just above the ankle

⚠️ Important:
Entrapment often occurs right where the nerve pierces the fascia and transitions to a superficial location.

In this case:
• Focal enlargement at the fascial exit
• Clear caliber change on long axis
• Increased cross-sectional area

⚠️ Symptoms can be subtle:
• Burning or tingling along the lateral lower leg
• Dorsal foot paresthesia
• Worse with activity
• Often no motor deficit

➡️ Easy to mistake for tendon or lateral ankle pathology

🎥 Watch the video to see how this looks on ultrasound.

Pro tip:
Use a cine loop and follow the nerve dynamically—this is where you’ll catch subtle abnormalities.

👉 Follow the nerve
👉 Compare sides

If it catches your eye… there’s usually a reason.

03/24/2026

See it. Follow it. Question it.

The superficial peroneal nerve is small…

easy to overlook…

—but when it’s enlarged at the fascial exit,

it’s often entrapment.

📍 Find it here:

• Between peroneus longus + extensor digitorum longus

• Distal lateral leg → tracking superficial

• Pierces crural fascia (anterior to fibula)

• Subcutaneous just above the ankle

⚠️ Key point:

Entrapment happens where the nerve

approaches → pierces fascia → becomes superficial

In this case:

• Focal enlargement at fascial exit

• Caliber change on long axis

• Increased cross-sectional area

⚠️ Symptoms aren’t always obvious:

• Lateral leg burning/tingling

• Dorsal foot paresthesia

• Worse with activity

• Often no motor deficit

➡️ Easy to mistake for tendon or lateral ankle pathology

🎥 Pro tip:

Use a cine loop

Follow it dynamically to the fascial exit

Look for subtle caliber change

👉 Follow the nerve

👉 Compare sides

If it catches your eye… there’s usually a reason.

12/16/2025

Have you ever had to evaluate the on and didn’t know where to start?

The pectoralis is not part of a standard shoulder ultrasound protocol, so there are not a lot of resources out there on how to scan it.

Learn to scan the pectoralis at the 👆

Do you know which deformity presents as a hard on the ?The answer is: Haglund’s deformity Haglund’s deformity is ...
12/10/2025

Do you know which deformity presents as a hard on the ?

The answer is: Haglund’s deformity

Haglund’s deformity is a prominence that forms at the insertion onto the posterosuperior aspect of the .

The patient may present with the following symptoms:

🔹 Palpable lump on the back of the heel
🔹Skin discoloration in area of lump
🔹 Heel pain
🔹 Posterior ankle swelling

On ultrasound, the lump will appear as multiple growths of bone extending outwards from the surface of the posterosuperior calcaneus. This is called exostosis. The Achilles tendon should also be scanned in the long and short axis and power should be utilized to document and hyperemia present within the tendon or surrounding bursae,

Associated ultrasound findings may include:

🔹An underlying calcaneus spur
🔹 Achilles tendinosis and/ or tears
🔹Retrocalcaneal and/ or superficial calcaneal
bursitis

12/10/2025

Do you know which deformity presents as a hard on the ?

The answer is: Haglund’s deformity

Haglund’s deformity is a bony prominence that forms at the insertion onto the .

The patient may present with the following symptoms:

🔹 A palpable lump on the back
of the heel
🔹 Skin discoloration in area of
lump
🔹 Heel pain
🔹 Posterior ankle swelling

On ultrasound, the lump will appear as multiple growths of bone that extend outwards from the surface of the posterosuperior aspect of the calcaneus. These are called exostoses. The Achilles tendon should also be scanned in the long and short axis, and power doppler should be utilized to document any hyperemia present within the tendon or surrounding bursae.

Associated ultrasound findings may include:

🔹An underlying calcaneal spur
🔹Achilles tendinosis and/or
tears
🔹Retrocalcaneal and/or
superficial calcaneal
bursitis

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