Pronator Quadratus: Difference between revisions
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== Description == | == Description == | ||
Pronator Quadratus is a deep-seated,short, flat quadrilateral muscle with parallel running fibres.<ref name=":0">Choung PW, Kim MY, Im HS, Kim KH, Rhyu IJ, Park BK, Kim DH. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4951369/ Anatomic characteristics of pronator quadratus muscle: a cadaver study.] Annals of rehabilitation medicine. 2016 Jun;40(3):496.</ref> Muscle has a mean length of 6 cm and mean width of 3.5 cm, the pronator quadratus muscle is confined in a small closed compartment, delimited by the distal side of the interosseous membrane dorsally and by its own fascia on the volar surface.<ref>Créteur V, Madani A, Brasseur JL. [https://www.sciencedirect.com/science/article/pii/S2211568411000076#bbib0040 Pronator quadratus imaging. Diagnostic and Interventional Imaging]. 2012 Jan 1;93(1):22-9.</ref>The muscle has been neglected to a great extend in the anatomical and functional literature.The study confirms,that the muscle consist of two head different head- Superficial head which is prime mover in forearm pronation, and the deep head which is dynamic stabilizer of radioulnar joint.<ref>Stuart PR. [https://pubmed.ncbi.nlm.nih.gov/8982912/#:~:text=Abstract,the%20gross%20and%20microscopic%20anatomy. Pronator quadratus revisited.] Journal of Hand Surgery. 1996 Dec;21(6):714-22.</ref> | Pronator Quadratus is a deep-seated,short, flat quadrilateral muscle with parallel running fibres.<ref name=":0">Choung PW, Kim MY, Im HS, Kim KH, Rhyu IJ, Park BK, Kim DH. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4951369/ Anatomic characteristics of pronator quadratus muscle: a cadaver study.] Annals of rehabilitation medicine. 2016 Jun;40(3):496.</ref> Muscle has a mean length of 6 cm and mean width of 3.5 cm, the pronator quadratus muscle is confined in a small closed compartment, delimited by the distal side of the interosseous membrane dorsally and by its own fascia on the volar surface.<ref name=":1">Créteur V, Madani A, Brasseur JL. [https://www.sciencedirect.com/science/article/pii/S2211568411000076#bbib0040 Pronator quadratus imaging. Diagnostic and Interventional Imaging]. 2012 Jan 1;93(1):22-9.</ref>The muscle has been neglected to a great extend in the anatomical and functional literature.The study confirms,that the muscle consist of two head different head- Superficial head which is prime mover in forearm pronation, and the deep head which is dynamic stabilizer of radioulnar joint.<ref>Stuart PR. [https://pubmed.ncbi.nlm.nih.gov/8982912/#:~:text=Abstract,the%20gross%20and%20microscopic%20anatomy. Pronator quadratus revisited.] Journal of Hand Surgery. 1996 Dec;21(6):714-22.</ref> | ||
=== Origin === | === Origin === | ||
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=== Nerve === | === Nerve === | ||
Anterior interosseous nerve, a branch of the median nerve (C8-T1).<ref name=":1" /> | |||
=== Artery === | === Artery === | ||
It is vascularized by the anterior interosseous artery.<ref name=":1" /> | |||
== Function == | == Function == | ||
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== Assessment == | == Assessment == | ||
== Palpation == | |||
Pronator Quadratus is the deepest muscle in the forearm that can be neither palpated nor observed.<ref name=":0" /> | |||
== Treatment == | == Treatment == | ||
Revision as of 17:29, 14 September 2020
Original Editor - User Name
Top Contributors - Kakshya Rupakheti and Amanda Ager
Description[edit | edit source]
Pronator Quadratus is a deep-seated,short, flat quadrilateral muscle with parallel running fibres.[1] Muscle has a mean length of 6 cm and mean width of 3.5 cm, the pronator quadratus muscle is confined in a small closed compartment, delimited by the distal side of the interosseous membrane dorsally and by its own fascia on the volar surface.[2]The muscle has been neglected to a great extend in the anatomical and functional literature.The study confirms,that the muscle consist of two head different head- Superficial head which is prime mover in forearm pronation, and the deep head which is dynamic stabilizer of radioulnar joint.[3]
Origin[edit | edit source]
Muscle arises from the oblique ridge on the anterior surface of the distal fourth of the Ulna.[1]
Insertion[edit | edit source]
Muscle is inserted in lateral border and anterior surface of the distal fourth of the radius.[1]
Nerve[edit | edit source]
Anterior interosseous nerve, a branch of the median nerve (C8-T1).[2]
Artery[edit | edit source]
It is vascularized by the anterior interosseous artery.[2]
Function[edit | edit source]
Clinical relevance[edit | edit source]
Assessment[edit | edit source]
Palpation[edit | edit source]
Pronator Quadratus is the deepest muscle in the forearm that can be neither palpated nor observed.[1]
Treatment[edit | edit source]
Resources[edit | edit source]
- ↑ 1.0 1.1 1.2 1.3 Choung PW, Kim MY, Im HS, Kim KH, Rhyu IJ, Park BK, Kim DH. Anatomic characteristics of pronator quadratus muscle: a cadaver study. Annals of rehabilitation medicine. 2016 Jun;40(3):496.
- ↑ 2.0 2.1 2.2 Créteur V, Madani A, Brasseur JL. Pronator quadratus imaging. Diagnostic and Interventional Imaging. 2012 Jan 1;93(1):22-9.
- ↑ Stuart PR. Pronator quadratus revisited. Journal of Hand Surgery. 1996 Dec;21(6):714-22.
