Ian Parkin
University of Cambridge
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Publication
Featured researches published by Ian Parkin.
Journal of Anatomy | 2001
Marc Rodríguez-Niedenführ; Teresa Vázquez; L. Nearn; B. Ferreira; Ian Parkin; J. R. Sañudo
A total of 192 embalmed cadavers were examined in order to present a detailed study of arterial variations in the upper limb and a meta‐analysis of them. The variable terminology previously used was unified into a homogenous and complete classification, with 12 categories covering all the previously reported variant patterns of the arm and forearm.
Journal of Anatomy | 1999
Marc Rodríguez-Niedenführ; J. R. Sañudo; Teresa Vázquez; L. Nearn; Bari M. Logan; Ian Parkin
This study confirms that the median artery may persist in adult life in 2 different patterns, palmar and antebrachial, based on their vascular territory. The palmar type, which represents the embryonic pattern, is large, long and reaches the palm. The antebrachial type, which represents a partial regression of the embryonic artery is slender, short, and terminates before reaching the wrist. These 2 arterial patterns appear with a different incidence. The palmar pattern was studied in the whole sample (120 cadavers) and had an incidence of 20%, being more frequent in females than in males (1.31), occurring unilaterally more often than bilaterally (41) and slightly more frequently on the right than on the left (1.11). The antebrachial pattern was studied in only 79 cadavers and had an incidence of 76%, being more frequent in females than in males (1.61); it was commoner unilaterally than bilaterally (1.51) and was again slightly more prevalent on the right than on the left (1.21). The origin of the median artery was variable in both patterns. The palmar type most frequently arose from the caudal angle between the ulnar artery and its common interosseous trunk (59%). The antebrachial pattern most frequently originated from the anterior interosseous artery (55%). Other origins, for both patterns, were from the ulnar artery or from the common interosseous trunk. The median artery in the antebrachial pattern terminated in the upper third (74%) or in the distal third of the forearm (26%). However, the palmar pattern ended as the 1st, 2nd or 1st and 2nd common digital arteries (65%) or joined the superficial palmar arch (35%). The median artery passed either anterior (67%) or posterior (25%) to the anterior interosseous nerve. It pierced the median nerve in the upper third of the forearm in 41% of cases with the palmar pattern and in none of the antebrachial cases. In 1 case the artery pierced both the anterior interosseous and median nerves.
Journal of Anatomy | 2001
Marc Rodríguez-Niedenführ; Teresa Vázquez; Ian Parkin; L. Nearn; J. R. Sañudo
A separate supernumerary muscle in the lateral cubital fossa originating from the humerus or brachioradialis and inserting into the radius, pronator teres or supinator muscle has been considered as a variation of the brachioradialis muscle (Dawson, 1822; Meckel, 1823; Lauth, 1830; Halbertsma, 1864; Gruber, 1868b; Testut, 1884; LeDouble, 1897; Spinner & Spinner, 1996). However, a similar description was used to report additional heads of the brachialis or biceps brachii muscles (Gruber, 1848; Wood, 1864, 1868; Macalister, 1864–66, 1966–69, 1875; Gruber, 1868a; Wolff‐Heidegger, 1937).
Clinical Anatomy | 2002
David Choi; Marc Rodríguez-Niedenführ; Teresa Vázquez; Ian Parkin; J. R. Sañudo
Clinical Anatomy | 2002
Marc Rodríguez-Niedenführ; Teresa Vázquez; Ian Parkin; Bari M. Logan; J. R. Sañudo
Clinical Anatomy | 2003
Marc Rodríguez-Niedenführ; Teresa Vázquez; David Choi; Ian Parkin; J. R. Sañudo
Clinical Anatomy | 2002
Marc Rodríguez-Niedenführ; Teresa Vázquez; Pau Golanó; Ian Parkin; J. R. Sañudo
Arthroscopy | 2006
Teresa Vázquez; Marc Rodríguez-Niedenfuhr; Ian Parkin; Fermin Viejo; J. R. Sañudo
Clinical Anatomy | 2007
K. Rourke; H. Dafydd; Ian Parkin
Clinical Anatomy | 2007
K.J. MacDonald; John Bridger; C. Cash; Ian Parkin