[Extensor pollicis longus rupture in a pediatric patient: case report and a literature review]. / Rotura del extensor pollicis longus en paciente pediátrico: reporte de caso y revisión de la literatura.

INTRODUCTION: the rupture of the extensor pollicis longus (EPL) tendon is a rare pathology and usually occurs in adult women in relation to distal radius fractures. MATERIAL AND METHODS: we present the case of an adolescent female patient who, after conservative treatment with splinting of a Peterson type I physeal fracture of the radius, suffered an acute extension deficit of the thumb at six weeks, diagnosed with clinical radiological examination as spontaneous rupture of the extensor pollicis longus (EPL). She was treated with extensor pollicis indicis propius (EIP) transfer with satisfactory results and recovering her usual activity one month after surgery. CONCLUSION: this kind of injuries are infrequent in pediatric ages and rarely described in a pediatric patient with immature skeleton, what makes this case something exceptional. It is necessary considering these complications in patients of low ages even with no other risk factors. The most frequent treatment applied in adults as in children is the EIP transference with good results in the long term.

INTRODUCCIÓN: la rotura del tendón extensor pollicis longus (EPL) constituye una patología infrecuente y se presenta normalmente en mujeres adultas en relación con fracturas de radio distal. MATERIAL Y MÉTODOS: se presenta el caso de una paciente adolescente femenino que, tras tratamiento conservador con férula de una fractura fisaria Peterson tipo I en radio, sufre a las seis semanas déficit agudo de extensión del pulgar, diagnosticada mediante examen clínico radiológico de rotura espontánea del extensor pollicis longus. Es tratada por medio de transferencia del extensor propio del índice (EPI) con resultados satisfactorios y recuperación de su actividad habitual al mes postoperatorio. CONCLUSIÓN: este tipo de lesiones son poco frecuentes en edad pediátrica y casi nunca descritas en un paciente pediátrico con inmadurez esquelética, lo cual hace de este caso algo excepcional. Es necesario tener en cuenta este tipo de complicaciones en pacientes de baja edad aún sin otros factores de riesgo asociados. El tratamiento aplicado más frecuentemente, tanto en adultos como en niños, es la transferencia del extensor propio del índice con buenos resultados a largo plazo.

Rotura del extensor pollicis longus en paciente pediátrico: reporte de caso y revisión de la literatura / Extensor pollicis longus rupture in a pediatric patient: case report and a literature review

Resumen: Introducción: la rotura del tendón extensor pollicis longus (EPL) constituye una patología infrecuente y se presenta normalmente en mujeres adultas en relación con fracturas de radio distal. Material y métodos: se presenta el caso de una paciente adolescente femenino que, tras tratamiento conservador con férula de una fractura fisaria Peterson tipo I en radio, sufre a las seis semanas déficit agudo de extensión del pulgar, diagnosticada mediante examen clínico radiológico de rotura espontánea del extensor pollicis longus. Es tratada por medio de transferencia del extensor propio del índice (EPI) con resultados satisfactorios y recuperación de su actividad habitual al mes postoperatorio. Conclusión: este tipo de lesiones son poco frecuentes en edad pediátrica y casi nunca descritas en un paciente pediátrico con inmadurez esquelética, lo cual hace de este caso algo excepcional. Es necesario tener en cuenta este tipo de complicaciones en pacientes de baja edad aún sin otros factores de riesgo asociados. El tratamiento aplicado más frecuentemente, tanto en adultos como en niños, es la transferencia del extensor propio del índice con buenos resultados a largo plazo.

Abstract: Introduction: the rupture of the extensor pollicis longus (EPL) tendon is a rare pathology and usually occurs in adult women in relation to distal radius fractures. Material and methods: we present the case of an adolescent female patient who, after conservative treatment with splinting of a Peterson type I physeal fracture of the radius, suffered an acute extension deficit of the thumb at six weeks, diagnosed with clinical radiological examination as spontaneous rupture of the extensor pollicis longus (EPL). She was treated with extensor pollicis indicis propius (EIP) transfer with satisfactory results and recovering her usual activity one month after surgery. Conclusion: this kind of injuries are infrequent in pediatric ages and rarely described in a pediatric patient with immature skeleton, what makes this case something exceptional. It is necessary considering these complications in patients of low ages even with no other risk factors. The most frequent treatment applied in adults as in children is the EIP transference with good results in the long term.

Intraosseous Catfish Barb Treated With Cannulated Drill in a Pediatric Patient.

Catfish injuries to the upper extremity following fishing activities are common in the southern United States, especially because noodling is commonplace in this region. Noodling is when a fisher will stick their hand into an area where a catfish is guarding its eggs and grab the catfish by its mouth. Different mechanisms of injury, including envenomation and spine embedment, can occur and ultimately lead to different patient presentations, including the retention of foreign bodies or infection. Literature reviews of catfish injuries primarily report the retention of foreign bodies within soft tissues, infection, and envenomation. We present the first case report of a patient who sustained a ring finger proximal phalangeal physeal injury involving the growth cartilage caused by a penetration injury from a catfish barb. A novel method for safely extracting these barbs with no subsequent growth arrest or range of motion limitation is also presented.

Radial shockwave treatment promotes chondrogenesis in human growth plate and longitudinal bone growth in rabbits.

OBJECTIVE: The process of longitudinal bone growth occurs at the growth plate where the chondrocytes undergo apparent structural and molecular changes to promote growth. Recent reports suggest that radial shockwave treatment (rSWT) stimulates bone length in cultured fetal rat metatarsals. Therefore, we investigated if rSWT has similar growth promoting effects on cultured human growth plate fragments and addressed the same in a preclinical in vivo rabbit model by subjecting their growth plates to rSWT. METHODS: Short-term effects of high-energy rSWT were evaluated in a unique model of cultured human growth plate cartilage (n = 5) wherein samples exposed to rSWT were assessed for chondrogenic markers at 24 h in comparison to unexposed samples obtained from the same limb. Local in vivo effects were studied in six-week-old rabbits who had their distal femurs exposed to four weekly sessions of rSWT at low- and high-energy levels (n = 4 each). At sacrifice, histomorphometric and immunohistochemistry analyses were performed. For effect on longitudinal growth, proximal tibiae of 22-week-old rabbits (n = 12) were asymmetrically exposed to rSWT; the contralateral side served as untreated controls. At sacrifice, the final bone length was measured. RESULTS: In the ex vivo model of cultured human growth plate cartilage, rSWT exposure upregulated SOX9 and COL2A1 compared to control. In the immature rabbit model, an increased number of proliferative chondrocytes and column density was seen for both the energy levels. In the adolescent rabbits, an increase in tibial length was observed after the fourth session of high-energy rSWT and until six-weeks after rSWT compared to the untreated limb. CONCLUSIONS: Our preliminary experimental results suggest that rSWT may serve as a non-invasive treatment and possibly a safe strategy to stimulate longitudinal bone growth. However, further studies are needed to assess the in vivo effects of rSWT in models of disturbed bone growth.

Ankle fractures in children.

Ankle fractures are common in children, and they have specific implications in that patient population due to frequent involvement of the physis in a bone that has growth potential and unique biomechanical properties.Characteristic patterns are typically evident in relation to the state of osseous development of the segment, and to an extent these are age-dependent.In a specific type known as transitional fractures - which occur in children who are progressing to a mature skeleton -a partial physeal closure is evident, which produces multiplanar fracture patterns.Computed tomography should be routine in injuries with joint involvement, both to assess the level of displacement and to facilitate informed surgical planning.The therapeutic objectives should be to achieve an adequate functional axis of the ankle without articular gaps, and to protect the physis in order to avoid growth alterations.Conservative management can be utilized for non-displaced fractures in conjunction with strict radiological monitoring, but surgery should be considered for fractures involving substantial physeal or joint displacement, in order to achieve the therapeutic goals. Cite this article: EFORT Open Rev 2021;6:593-606. DOI: 10.1302/2058-5241.6.200042.

Tratamento do rádio curvo em cão jovem com associação das técnicas de grampeamento fisário radial, ostectomia ulnar e fixador externo dinâmico transarticular / Treatment of radius curvus in a young dog with association of radial physeal stapling, ulnar ostectomy and transarticular dynamic external fixator techniques

Background: Radius curvus is a clinical manifestation of the premature closure of the distal ulnar physis and the mostcommon physeal disease in dogs, representing 63% of all physeal injuries. There are few reports indicating the techniqueof stapling for treatment of radius curvus in squeletically immature dogs. The aim of this study is to report a case of radiuscurvus in a young dog successfully treated with a combination of 3 surgical tecniques: 1- Stapling the medial and cranialportions of the distal radial physis; 2- Oblique osteotomy of the proximal ulna and ostectomy of the distal ulna, and 3-Dynamic external skeletal fixation in the elbow joint.Case: A 5-month-old female dog was referred to the University Veterinary Hospital with a history of left thoracic limb deformity for 2 months. There was a history of possible traumatic event on the front limb, in addition to providing nutritionalsupplements daily. In the radiographic evaluation the changes were identified in the left thoracic limb: shortening of theulna, procurvatum and medial angulation of the distal radius, increased joint space and articular incongruity of the elbowjoint. The dog was subjected to surgical treatment by the combination of three main surgical techniques. For the staplingof the distal radial physis the surgical approach on the cranial-medial surface of the distal radius was made. Two surgicalstaples were positioned in the distal radial physis. Thereafter a caudal approach was made to the distal region of the ulnardiaphysis for the distal ostectomy of the ulna. A bone segment of 1 cm in length of the distal ulnar diaphysis was removed.Another caudal approach was made to the proximal region of the ulnar diaphysis and a proximal oblique osteotomy of theulna was performed. For the dynamic external skeletal fixation in the elbow joint two Steinmann pins were inserted. Thefirst pin was proximal to the supracondilar...(AU)

Tratamento do rádio curvo em cão jovem com associação das técnicas de grampeamento fisário radial, ostectomia ulnar e fixador externo dinâmico transarticular / Treatment of radius curvus in a young dog with association of radial physeal stapling, ulnar ostectomy and transarticular dynamic external fixator techniques

Background: Radius curvus is a clinical manifestation of the premature closure of the distal ulnar physis and the mostcommon physeal disease in dogs, representing 63% of all physeal injuries. There are few reports indicating the techniqueof stapling for treatment of radius curvus in squeletically immature dogs. The aim of this study is to report a case of radiuscurvus in a young dog successfully treated with a combination of 3 surgical tecniques: 1- Stapling the medial and cranialportions of the distal radial physis; 2- Oblique osteotomy of the proximal ulna and ostectomy of the distal ulna, and 3-Dynamic external skeletal fixation in the elbow joint.Case: A 5-month-old female dog was referred to the University Veterinary Hospital with a history of left thoracic limb deformity for 2 months. There was a history of possible traumatic event on the front limb, in addition to providing nutritionalsupplements daily. In the radiographic evaluation the changes were identified in the left thoracic limb: shortening of theulna, procurvatum and medial angulation of the distal radius, increased joint space and articular incongruity of the elbowjoint. The dog was subjected to surgical treatment by the combination of three main surgical techniques. For the staplingof the distal radial physis the surgical approach on the cranial-medial surface of the distal radius was made. Two surgicalstaples were positioned in the distal radial physis. Thereafter a caudal approach was made to the distal region of the ulnardiaphysis for the distal ostectomy of the ulna. A bone segment of 1 cm in length of the distal ulnar diaphysis was removed.Another caudal approach was made to the proximal region of the ulnar diaphysis and a proximal oblique osteotomy of theulna was performed. For the dynamic external skeletal fixation in the elbow joint two Steinmann pins were inserted. Thefirst pin was proximal to the supracondilar...

Fratura fisária do rádio e luxação perilunar do carpo: um relato de caso / Physeal fracture of radius and perilunate dislocation of carpo: a case report

A relevância do relato de caso em questão está em sua raridade de acometimento durante a infância (período em que se observa um sinal clássico em uma das radiografias solicitadas). Trata-se de uma luxação perilunar em punho direito, associada à fratura fisária do rádio em criança de onze anos, após acidente com laço. Foi feita a redução fechada e colocação de tala gessada no membro, o qual também apresentava áreas de sofrimento da pele causadas pela corda. O quadro clínico do paciente evoluiu com dor, edema e diminuição da perfusão. Nesse momento, foi encaminhado para o centro cirúrgico onde foi realizada redução aberta com incisão dorsal em S, fixação da luxa-ção e fasciotomia. Após o ato cirúrgico, paciente evoluiu bem. Atualmente, após algumas sessões de fisioterapia, tem movimento quase total de flexão e extensão do punho, restando apenas limitação no desvio ulnar e radial. As crianças do século XXI se mostram muito ativas em vista disso têm aumentado os casos de fratura e luxação na pediatria, tanto pelo aumento do impacto quanto pela exposição a possíveis mecanismos de lesão. (AU)

The relevance of this case report is its rarity of involvement during childhood (the period in which there is a classic sign in one of the required x-rays). This is a case of perilunate dislocation in right wrist associated with physeal fracture of radius in an eleven-year-old child, after a rope accident. The closed reduction and placement of a plas-ter splint were performed, which also presented areas of skin suffering caused by the rope. The patient's medical condition evolved for pain, edema, and decreased perfusion. At that time, he was transferred to a surgical center where it was performed an open reduction with a dorsal incision in S, dislocation fixation and fasciotomy. After the surgical procedure, the patient's medical condition developed well. Currently, after some physical therapy sessions, he has almost total movement of flexion and extension of his wrist, there is the only limitation in ulnar and radial deviation. Children of the 21st century are very active, and there has been an increase in the cases of fracture and dislocation, in pediatrics, both by increasing impact and exposure to possible mechanisms of injury (AU)

Lesión por estrés de la fisis distal del fémur: reporte de un caso y revisión del tema / Distal physis femur stress injury

En este reporte presentamos el caso de un niño de 14 años sin antecedentes mórbidos, que consulta por un cuadro de gonalgia, confirmándose el diagnóstico mediante resonancia magnética (RM) de lesión por estrés de la fisis distal del fémur. La literatura muestra que este tipo de lesiones son frecuentes en pacientes jóvenes deportistas y que el mecanismo que lleva al engrosamiento fisiario se produce por un trauma repetido que genera estrés mecánico y distracción del cartílago de crecimiento. El objetivo de esta publicación es aportar un caso a la literatura y dar a conocer la importancia de la radiología en el diagnóstico precoz de esta enfermedad, para que de esta forma el paciente no presente complicaciones futuras.

In this case report we present a 14-year-old patient with no previous medical history, who asked for knee pain. He was diagnosed with stress injury of the femur physis. The literature shows that this type of injuries are frequent in young athletes and the mechanism that leads to physeal widening is produced by a repeated trauma that generates mechanical stress and distraction of the growth cartilage. The aim of this case report is to show the relevance of radiology in the early diagnosis of this disease preventing future complications.

Guided growth may not be the best option for knee valgus deformity in adolescent patients with Morquio-A.

INTRODUCTION: Valgus deformity in knees is a common concern in Morquio-A patients, preceding premature arthrosis and pain leading to walking disability and loss of ambulatory status. Treatment alternative is the guided growth, but this is sometimes not applied on time. Due to short height reached on these patients, not all will benefit from guided growth surgery. PURPOSE: The purpose of this study is to describe early results of physeal osteotomy for acute valgus correction in adolescent patients and those almost at height peak to achieve alignment. METHODS: We perform the osteotomy in four knees of 10- and 14-year-old patients, fixed with Kirschner wires, and allow early weight bearing. This is compared with one patient who was managed by guided growth. RESULTS: The average acute correction osteotomy was 39 degrees with intermalleolar distance of 350 and 240 mm. At final follow-up, this measure was reduced to 70 and 20 mm, respectively, with clinical valgus of 4° and 2°. For the patient with guided growth, she was operated at 10.2 years old and 36 months in follow-up; preoperative valgus was 28/24° with intermalleolar distance of 140 mm. At the end of follow-up, this distance was increased to 150 mm with clinical valgus of 18/22°. During this follow-up, none of the patients lost ambulatory status. As a part of multi-organic disease progression, none of the three patients completed the 6-min walking test at final follow-up. CONCLUSIONS: This physeal osteotomy is a feasible and optimal option to achieve acute valgus correction on severe deformity when there is not enough remaining growth on adolescent Morquio-A patients, and may help reduce arthritis progression in adjacent joints.

Fracturas fisarias Salter-Harris VI de tobillo y pie

Introducción: Las fracturas Salter-Harris VI son lesiones cuya característica es la ablación del anillo pericondral. Son infrecuentes, pero potencialmente devastadoras. El objetivo de este estudio fue evaluar el mecanismo, el tratamiento y los resultados funcionales de estas lesiones en pie y tobillo. Materiales y Métodos: Se analizaron retrospectivamente todos los pacientes con lesiones Salter-Harris VI de tobillo y pie, tratadas entre enero de 2010 y enero de 2013. Se documentaron datos demográficos, clasificación, mecanismo de lesión, tipo de lesiones asociadas y número de cirugías necesarias. La evaluación funcional se realizó con el puntaje de la AOFAS y se tomaron radiografías para determinar viabilidad de la fisis, acortamiento o deformidad angular. Resultados: Se analizaron 5 fracturas (4 pacientes). La edad promedio fue de 7.5 años (rango 6-10 años). El seguimiento promedio fue de 26.2 meses. Tres lesiones se produjeron por accidentes de moto y 2, por auto versus peatón. Todos los casos se acompañaron de pérdida de sustancia, el 75% tenía lesiones en más de un hueso y el 50%, lesiones tendinosas asociadas. Cada paciente requirió un promedio de 3,2 cirugías. El puntaje de la AOFAS promedio fue de 79.8 (rango 62- 100). Sólo el 40% de las fisis afectadas permanecían viables al último control. Conclusiones: Las fracturas Salter-Harris VI se acompañan de una gran variedad de lesiones asociadas, requieren múltiples cirugías, suelen producir un cierre precoz de la fisis y algún grado de discapacidad. Se requieren medidas preventivas para evitar la exposición de los niños a este tipo de lesiones.(AU)

Background: Salter-Harris VI fractures (SHVI) are injuries in which part of the physis is missing. They are rare in children but potentially devastating. The aim of this study was to evaluate the mechanism of production, treatment, and functional outcomes of these injuries in the foot and ankle. Methods: All patients with foot and ankle SHVI injuries treated between January 2010 and January 2013 were retrospectively analyzed. Demographics, classification, mechanism of injury, type and number of associated injuries that required surgery were documented. Patients were assessed functionally with the AOFAS score and a radiological evaluation was performed to determine the viability of the physis, limb length discrepancies or angular deformities. Results: Five fractures in 4 patients were analyzed. The average age at injury was 7.5 years (range 6-10 years). Mean follow-up was 26.2 months (range 12-37 months). Three injuries occurred as a result of motorcycle accidents, and 2 in a car accident. All were associated with soft-tissue injuries, 75% had more than one injured bone and 50% had tendon lesions. Each patient required an average of 3.2 surgeries (range 2-5). The average AOFAS was 79.8 points (range 62-100). Radiographically, only 40% of the affected physis remained viable at last follow-up. Conclusions: SHVI fractures are associated with several injuries, require multiple surgeries and often result in premature growth arrest and some degree of disability. Prevention measures are required to avoid the exposure of children to this type of injury.(AU)

Fracturas fisarias Salter-Harris VI de tobillo y pie / Salter-Harris VI fractures of the foot and ankle

Introducción: Las fracturas Salter-Harris VI son lesiones cuya característica es la ablación del anillo pericondral. Son infrecuentes, pero potencialmente devastadoras. El objetivo de este estudio fue evaluar el mecanismo, el tratamiento y los resultados funcionales de estas lesiones en pie y tobillo. Materiales y Métodos: Se analizaron retrospectivamente todos los pacientes con lesiones Salter-Harris VI de tobillo y pie, tratadas entre enero de 2010 y enero de 2013. Se documentaron datos demográficos, clasificación, mecanismo de lesión, tipo de lesiones asociadas y número de cirugías necesarias. La evaluación funcional se realizó con el puntaje de la AOFAS y se tomaron radiografías para determinar viabilidad de la fisis, acortamiento o deformidad angular. Resultados: Se analizaron 5 fracturas (4 pacientes). La edad promedio fue de 7.5 años (rango 6-10 años). El seguimiento promedio fue de 26.2 meses. Tres lesiones se produjeron por accidentes de moto y 2, por auto versus peatón. Todos los casos se acompañaron de pérdida de sustancia, el 75% tenía lesiones en más de un hueso y el 50%, lesiones tendinosas asociadas. Cada paciente requirió un promedio de 3,2 cirugías. El puntaje de la AOFAS promedio fue de 79.8 (rango 62-100). Sólo el 40% de las fisis afectadas permanecían viables al último control. Conclusiones: Las fracturas Salter-Harris VI se acompañan de una gran variedad de lesiones asociadas, requieren múltiples cirugías, suelen producir un cierre precoz de la fisis y algún grado de discapacidad. Se requieren medidas preventivas para evitar la exposición de los niños a este tipo de lesiones. Nivel de evidencia: IV - Serie de casos.

Background: Salter-Harris VI fractures (SHVI) are injuries in which part of the physis is missing. They are rare in children but potentially devastating. The aim of this study was to evaluate the mechanism of production, treatment, and functional outcomes of these injuries in the foot and ankle. Methods: All patients with foot and ankle SHVI injuries treated between January 2010 and January 2013 were retrospectively analyzed. Demographics, classification, mechanism of injury, type and number of associated injuries that required surgery were documented. Patients were assessed functionally with the AOFAS score and a radiological evaluation was performed to determine the viability of the physis, limb length discrepancies or angular deformities. Results: Five fractures in 4 patients were analyzed. The average age at injury was 7.5 years (range 6-10 years). Mean follow-up was 26.2 months (range 12-37 months). Three injuries occurred as a result of motorcycle accidents, and 2 in a car accident. All were associated with soft-tissue injuries, 75% had more than one injured bone and 50% had tendon lesions. Each patient required an average of 3.2 surgeries (range 2-5). The average AOFAS was 79.8 points (range 62-100). Radiographically, only 40% of the affected physis remained viable at last follow-up. Conclusions: SHVI fractures are associated with several injuries, require multiple surgeries and often result in premature growth arrest and some degree of disability. Prevention measures are required to avoid the exposure of children to this type of injury.

Interposição de fragmento periosteal na fratura da placa epifisária femoral distal: estudo por ressonância magnética / Trapped periosteum in a distal femoral physeal injury: magnetic resonance imaging evaluation

Epiphyseal fractures are frequently associated with knee trauma during sports in children and adolescents. Usually, Salter-Harris types I and II fractures are conservatively treated. However, failed closed reduction of displaced fractures suggest the presence of trapped periosteum, with indication for surgery. The present report describes a case of Salter-Harris type I fracture of the distal femur in a child, complicated with trapped periosteum detected at magnetic resonance imaging.

Fraturas epifisárias são frequentemente relacionadas a traumatismo do joelho durante práticas esportivas em crianças e adolescentes. Fraturas Salter-Harris tipos I e II são tratadas conservadoramente, no entanto, quando irredutíveis, sugerem interposição de fragmento periosteal, sendo indicada cirurgia. Este trabalho relata fratura epifisária Salter-Harris tipo I do fêmur distal de uma criança, com interposição de periósteo detectado no exame de ressonância magnética.

Avaliação por imagem das lesões da placa de crescimento / Imaging of growth plate injuries

As estruturas responsáveis pelo crescimento do osso incluem a fise (também chamada placa de crescimento) e as epífises. Afecções que acometem pacientes com o esqueleto imaturo, ou seja, com a placa de crescimento ainda aberta, podem interferir no crescimento ósseo, resultando em complicações como parada do crescimento, encurtamento dos membros ou deformidades angulares. Condições traumáticas que resultam muitas vezes em fraturas epifisárias são a causa mais comum das lesões da placa de crescimento. A avaliação cuidadosa desses pacientes pelos métodos de diagnóstico por imagem atualmente disponíveis, sobretudo a radiografia, a tomografia computadorizada e a ressonância magnética, permite o reconhecimento precoce do comprometimento das estruturas relacionadas ao crescimento ósseo, além de tratamento adequado, diminuindo a possibilidade do desenvolvimento de tais complicações.

The structures responsible for the growth of bones include the physis (also called growth plate) and the epiphysis. Affections involving patients with immature skeletons, i.e., with a still open growth plate, may affect the bone growth, resulting in complications such as growth arrest, limb shortening and angular deformities. Traumatic conditions, many times resulting in epiphyseal fractures, are the most frequent cause of growth plate injuries. A careful evaluation of these patients by means of currently available imaging methods, especially radiography, computed tomography and magnetic resonance imaging, allows an early diagnosis of the involvement of structures related to the bone growth, besides an appropriate management, reducing the probability of secondary complications.

Fechamento das placas epifisárias do metacarpiano principal, do rádio e da tíbia em potros Crioulos

Aiming at documenting the closure of the physeal plates of the long bones, 92 Criollo foals, males and females, between 6 and 29 months of age, were used in this study. Dorsopalmar radiographs were taken from the distal portion of the radius, 3rd metacarpal bone and tibia. The radiographic image of the growth plate was classified as visible, partially visible or not visible. At 7 months of age the growth plate of the 3rd metacarpal bone was no longer visible. In the distal physis of the tibia the growth plate was no longer visible at 23 months and at 25 months of age in the radius. The results of this study show that period of closure of the physeal plates of the main metacaopal bone, the radius and tibia is similar to the some described in other breeds.

Com o objetivo de determinar a idade do fechamento das placas de crescimento dos ossos longos, foram usados 92 potros da raça crioula com idades entre 6 a 29 meses, machos e fêmeas, provenientes de cinco criatórios diferentes. Foram radiografadas as placas epifisárias distais do terceiro metacarpiano, do rádio e da tíbia. A imagem radiográfica foi classificada quanto ao fechamento em: visível, parcialmente visível ou não visível. Foram avaliados a influência do sexo, da propriedade e do regime nutricional sobre o fechamento da placa epifisária. Observou-se que, aos sete meses de idade, a placa epifisária do metacarpiano principal já não era visível. A placa epifisária distal da tíbia não foi possível de ser identificada aos 23 meses. Na porção distal do rádio, a placa epifisária esteve visível até os 25 meses de idade. Os resultados deste estudo comprovam que o período de fechamento da placa epifisária dos ossos metacarpiano principal, rádio e tíbia de potros crioulos se assemelha ao descrito em outras raças.

Fechamento das placas epifisárias do metacarpiano principal, do rádio e da tíbia em potros Crioulos

Aiming at documenting the closure of the physeal plates of the long bones, 92 Criollo foals, males and females, between 6 and 29 months of age, were used in this study. Dorsopalmar radiographs were taken from the distal portion of the radius, 3rd metacarpal bone and tibia. The radiographic image of the growth plate was classified as visible, partially visible or not visible. At 7 months of age the growth plate of the 3rd metacarpal bone was no longer visible. In the distal physis of the tibia the growth plate was no longer visible at 23 months and at 25 months of age in the radius. The results of this study show that period of closure of the physeal plates of the main metacaopal bone, the radius and tibia is similar to the some described in other breeds.

Com o objetivo de determinar a idade do fechamento das placas de crescimento dos ossos longos, foram usados 92 potros da raça crioula com idades entre 6 a 29 meses, machos e fêmeas, provenientes de cinco criatórios diferentes. Foram radiografadas as placas epifisárias distais do terceiro metacarpiano, do rádio e da tíbia. A imagem radiográfica foi classificada quanto ao fechamento em: visível, parcialmente visível ou não visível. Foram avaliados a influência do sexo, da propriedade e do regime nutricional sobre o fechamento da placa epifisária. Observou-se que, aos sete meses de idade, a placa epifisária do metacarpiano principal já não era visível. A placa epifisária distal da tíbia não foi possível de ser identificada aos 23 meses. Na porção distal do rádio, a placa epifisária esteve visível até os 25 meses de idade. Os resultados deste estudo comprovam que o período de fechamento da placa epifisária dos ossos metacarpiano principal, rádio e tíbia de potros crioulos se assemelha ao descrito em outras raças.