Prevalence of Os Trigonum on CT Imaging

Zwiers, Ruben; Baltes, Thomas P. A.; Opdam, K. T. M.; Wiegerinck, Johannes I.; Dijk, C. Niek van

doi:10.1177/1071100717740937

Cited by 45 publications

(57 citation statements)

References 9 publications

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“…Because of this, he reasoned that after anterior dislocation, the Achilles pulled the talus posteriorly [17]. Conversely, other authors feel that in the unstable equinus position, an appropriately directed force could result in direct posterior extrusion [7,[18][19][20].…”

Section: Discussionmentioning

confidence: 99%

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Isolated Posterior Medial Ankle Dislocation with Associated Os Trigonum Dislocation after Low-Energy Mechanism

Irving

Geers

Lawrence

2020

Case Reports in Orthopedics

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We describe a case of an isolated posteromedial ankle dislocation, without malleolar fracture, with associated dislocation of an os trigonal process after a low-energy tennis injury. We demonstrate that nonoperative treatment results in excellent functional outcome scores with minimal arthritic progression at 2 years of follow-up. We discuss pathoanatomic risk factors of pure dislocations and propose that an os trigonum is a risk factor for isolated dislocations of the ankle.

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Section: Discussionmentioning

confidence: 99%

“…Like pure ankle dislocations, bilateral os trigonum is uncommon. Zwiers et al found the incidence of bilateral os trigonums to be only 14.3% in their retrospective CT evaluation of 628 patients [20]. Injury of the os trigonum can occur by two different mechanisms.…”

Section: Discussionmentioning

confidence: 99%

Isolated Posterior Medial Ankle Dislocation with Associated Os Trigonum Dislocation after Low-Energy Mechanism

Irving

Geers

Lawrence

2020

Case Reports in Orthopedics

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“…Tanto o Os trigono quando o processo de Stieda são achados sem repercuções clínicas na população geral (15) . Conforme encontrado por Zwiers et al (16) , em estudo de avaliação tomográfica de 1256 tornozelos, que constatou uma prevalência de 30.3% de Os trigonum em pacientes assintomáticos, assim como a presença em 46.4% dos indivíduos que apresentavam quadro de impacto posterior, de maneira geral esse achado esteve presente em 23.7% dos tornozelos (16) . Na ausência de evidência de Os trigonum, o alargamento do tubérculo posterior do processo talar foi identificado em 34.9% dos tornozelos (16) .…”

Section: Discussionunclassified

“…Conforme encontrado por Zwiers et al (16) , em estudo de avaliação tomográfica de 1256 tornozelos, que constatou uma prevalência de 30.3% de Os trigonum em pacientes assintomáticos, assim como a presença em 46.4% dos indivíduos que apresentavam quadro de impacto posterior, de maneira geral esse achado esteve presente em 23.7% dos tornozelos (16) . Na ausência de evidência de Os trigonum, o alargamento do tubérculo posterior do processo talar foi identificado em 34.9% dos tornozelos (16) . Sugere-se que a sobrecarga repetida, e os microtraumas de repetição a qual a população que pratica atividade física e exige a flexão plantar forçada pode ser o fator desencadeante para sintomas da síndrome (3,7,9,15) .…”

Section: Discussionunclassified

Posterior ankle impingement syndrome in athletes

et al. 2019

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Objective: This study sought to evaluate the results of 10 athletes diagnosed with posterior ankle impingement syndrome (PAIS) treated with arthroscopy between 2016 and 2017 by the Sports Traumatology Center of our University. Methods: Patients were evaluated with regard to the presence of associated lesions, the etiology of PAIS, and treatment outcomes using a visual analog scale (VAS) and the American Foot and Ankle Society (AOFAS) scores. All cases were treated using an arthroscopic approach to the posterior ankle. Results: Six patients presented with ankle instability and were treated with Brostrom-Gould ligament repair as an adjuvant procedure. One patient had sinus tarsi syndrome, and this space was debrided. Injury of the peroneus brevis tendon was identified in two cases, and Achilles tendinopathy was identified in one individual. Only three patients did not receive adjuvant treatment. During surgery, five cases of trigonal processes, three cases of Stieda process, one case of hallux saltans, and one case of accessory ossicle of the fibula were identified as the causes of the impingement. The mean VAS score was 1.28 (0.6-2.5), and the mean AOFAS score was 88.6 (72-100). No complications were reported. Conclusion: Arthroscopic resection of the cause of the impingement, alone or in combination with the treatment of secondary conditions, was used to effectively treat pain and reestablish function. Level of Evidence IV; Therapeutic Studies; Case series.

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“…Coskun et al (2009) evaluaron radiografías de 984 sujetos y establecieron que un 2,3 % de la población turca presenta OT. En cambio, Zwiers et al (2018) estudiaron 1256 tobillos y establecieron que un 32,5 % de la población presentó OT.…”

Section: Materials Y Métodounclassified

Presencia y Biometría del Os Trigonum en Individuos Chilenos: Estudio Radiológico

et al. 2018

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RESUMEN: El tubérculo lateral del proceso posterior del talo se fusiona generalmente con el cuerpo de este hueso, sin embargo, debido al estrés (flexión plantar forzada) aplicado durante los años de la adolescencia o cuando un centro osificado parcialmente e incluso totalmente osificado se fractura, se provoca una falta de unión, dando lugar a un hueso accesorio denominado Os trigonum (OT). En algunos casos puede producirse el síndrome os trigonum o síndrome de pinzamiento posterior, el cual se caracteriza por un dolor agudo o crónico de la región posterior del tobillo. Basado en lo anterior, se realizó un estudio retrospectivo entre el período de Agosto de 2017 a Mayo de 2018, en el cual se analizaron radiografías bilaterales de 205 pacientes concurrentes al Hospital Hernán Henríquez Aravena de Temuco, Chile. De la población estudiada, 154 fueron de sexo femenino y 51 de sexo masculino cuyas edades fluctuaron entre los 15 y 85 años, Las proyecciones radiológicas utilizadas fueron de pie lateral, tobillo lateral o calcáneo lateral, para así para determinar la prevalencia de OT y contribuir acerca de su distribución en pie derecho e izquierdo y aparición según sexo y edad. Del total de la muestra, se encontraron 24 individuos que presentaban OT (11,7 %) de los cuales 18 (75 %) correspondían al sexo femenino y 6 (25 %) al sexo masculino. Además se realizaron mediciones del largo y ancho del OT. Los datos obtenidos son una contribución al conocimiento de los huesos accesorios del pie en la población chilena.

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Prevalence of Os Trigonum on CT Imaging

Abstract: Level III, retrospective comparative study.

Cited by 45 publications

References 9 publications

Isolated Posterior Medial Ankle Dislocation with Associated Os Trigonum Dislocation after Low-Energy Mechanism

Isolated Posterior Medial Ankle Dislocation with Associated Os Trigonum Dislocation after Low-Energy Mechanism

Posterior ankle impingement syndrome in athletes

Presencia y Biometría del Os Trigonum en Individuos Chilenos: Estudio Radiológico

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