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Pseudo-bursitis/Tenosynovitis

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<v ->Now there is a bare area

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as I mentioned between the ulnar bursa

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and these digital tendon sheets

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and that bare area

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is occupied by muscles.

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These are the lumbrical muscles.

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Now the reason I wanted to mention that

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is that strains of these muscles

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will produce edema particularly in this location

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beneath the metacarpal of the ring finger

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that you may diagnose as tenosynovitis.

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But this is in a bare area, okay.

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This is not in an area

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in which there is a tendency.

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You can see it here in the coronal plane.

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It looks a bit like tenosynovitis.

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It is very common to see this

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in the rock climbers.

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Particularly as they use their ring finger

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and perhaps the ring finger alone

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as they try to climb the rock.

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And that increases the distance

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between the flexor tendons and the third

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and fourth digits and stretches.

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In fact, the lumbrical muscle

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which originates from both of them.

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And so this

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is the characteristic location

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in which you're gonna find this muscle strain.

Report

Faculty

Donald Resnick, MD

Professor Emeritus, Department of Radiology

University of California, San Diego

Carlos H. Longo, MD

Head of Radiology

Hospital Beneficência Portuguesa de São Paulo

Abdalla Skaf, MD

Head of the Department of Diagnostic Imaging Hospital HCor / Medical director of ALTA diagnostics (DASA group)

HCOR / DASA / TELEIMAGEM

Rodrigo Aguiar, MD, PhD

Professor of Radiology

Federal University of Paraná - Brazil

Marcelo D’Abreu, MD

Head of Radiology

Hospital Mae de Deus

Tags

Musculoskeletal (MSK)

MSK

MRI

Hand & Wrist