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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Dr Ivan Popoff
www.orthosports.com.au
29‐31 Dora Street, Hurstville 160 Belmore Road, Randwick
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Posterior Interosseous Nerve Syndrome
(Radial Tunnel Syndrome)
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Posterior Interosseous Nerve Compression
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Function
Innervates ECRB, Supinator, ECU, EDC, EDM, APL, EPB, EPL
Sensory to wrist dorsal capsuleNo skin innervation
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Sites CompressionArcade of Frose, Radial artery
recurrent leash of Henry, Supinator(dislocation radial head, RA radio‐
capitallar
joint , tumour)
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Definitions
PIN Compression Syndrome ‐
+ve NCS
Radial Tunnel Syndrome – no objective findings
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Aeitiolgy
Primary – overuse supinator hypertrophy
Secondary – another injury leads to altered mechanics and over use of supinator
(lateral epicondylitis, distal
biceps dysfunction)
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Symptoms
Lateral proximal forearm pain (distal to radial head)
Wrist painClumsiness and/ or hand weakness
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Clinical Signs
Non responsive to CEO injection of LA
Tenderness over radial tunnel (1/3 along line between lateral epicondyle and Listers
tubercle)
+/‐Weakness finger / wrist extension
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
InvestigationsNCS – often negitiveMRI –
findings subtle often negative
Injection of radial tunnel LA and cortico
steroid
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Radial Tunnel Injection
•
12 patients 2 bilateral•
2 +ve
NCS
•
3 MRI subtle signs•
All temp relief with injection
•
All relief of symptoms with surgical release
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Surgical Release
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
PIN Syndrome Conclusion
Often associated with Lateral epiconylitis
Easily treatableReliably diagnosed with LA injection
to radial tunnel
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Dr Ivan PopoffKnee, Elbow & Shoulder Surgery
Thank You