RT Journal Article
T1 Anconeus and pronation: a palpatory and ultrasonographic study.
A1 Canoso, Juan J.
A1 Murillo González, Jorge Alfonso
A1 Mérida Velasco, José Ramón
A1 Kalish, Robert A.
A1 Olivas Vergara, Otto
A1 Gómez Moreno, Cristina
A1 García Carpintero Blas, Eva
A1 Fuensalida Novo, Gema
A1 Naredo, Esperanza
AB PurposeDepending on its axis, pronation varies from the radius rotation around the steady ulna to the reciprocal adduction of the radius and abduction of the ulna. While there is no question that pronator teres is a central pronation agonist, anconeus’s role is not settled. The current investigation comparing palpation and ultrasonography in these two muscles during pronation along the axis capitulum-second digit evolved from a serendipitous finding in a clinical anatomy seminar.MethodsSingle-hand palpation and two-transducer ultrasonography over anconeus and pronator teres were used on ten normal subjects to investigate their contraction during pronation around the capitulum-second digit axis. These studies were done independently and blind to the results of the other. The statistical analysis between palpation and ultrasonography was performed with Cohen’s kappa coefficient and the χ2 test.ResultsOn palpation, on resisted full pronation, anconeus contracted in 8/10 subjects and pronator teres in 10/10 subjects. Without resistance, the corresponding ratios were 5/10 and 9/10. On two-transducer ultrasonography, the comparable ratios were 7/10 and 10/10, and 3/10 and 10/10. A fair concordance (Cohen’s kappa = 0.21) between palpation and ultrasonography in detecting the simultaneous status of anconeus and pronator teres during resisted full pronation. Anatomic dissection illustrated the elements involved.ConclusionsPlain palpation confirmed by ultrasonography showed the simultaneous contraction of anconeus and pronator teres during resisted pronation in most of the studied subjects. The study suggests that palpation can be helpful in directly studying muscle activity during movement.
PB Springer
YR 2024
FD 2024-07-23
LK https://hdl.handle.net/20.500.14352/112742
UL https://hdl.handle.net/20.500.14352/112742
LA eng
NO Canoso JJ, Murillo-González J, Mérida-Velasco JR, Kalish RA, Olivas-Vergara O, Gómez-Moreno C, Blas EG, Fuensalida-Novo G, Naredo E. Anconeus and pronation: a palpatory and ultrasonographic study. Surg Radiol Anat. 2024 Sep;46(9):1447-1454. doi: 10.1007/s00276-024-03399-6. Epub 2024 Jul 23. Erratum in: Surg Radiol Anat. 2024 Dec;46(12):2103-2104. doi: 10.1007/s00276-024-03479-7. PMID: 39043949; PMCID: PMC11424725.
NO Instituto de Salud Carlos III
NO Unión Europea
DS Docta Complutense
RD 10 abr 2025