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Abductor pollicis longus

Origin

1- lateral dorsal ulna below the insertion of the Anconæus
2- the interosseous membrane
3- middle third dorsal surface of radius

Insertion

anterior aspect of the base of the first metacarpal

Action(s)

abducts and extends the thumb at CMC joint / wrist flexion / wrist abductor

Nerve Supply

PIN

Arterial Supply

Posterior Interosseous Artery

Physical Exam

Enter physical examination maneuvers for muscle

Clinical Importance

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Disease States

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Discussion

Discussion on muscle
Figures

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Credits:

From Wikipedia: Abductor pollicis longus

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Academic Resources

Resources on Abductor pollicis longus from Pubget.

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Orthopaedic Web Links

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2008 Tenosynovitis eMedicine Emergency
Arthritis- Basal joint arthroplasty with split abductor pollicis longus graft
deQuervains NCEMI
2002 Intersection Syndrome eMedicine Orthopedics
2007 De Quervain Teonsynovitis eMedicine Rehab
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