Search results for "ossification"

The role of muscular trauma in the development of heterotopic ossification after hip surgery: An animal-model study in rats.

2015

Abstract Background Heterotopic ossification (HO), the formation of bone in soft tissues, is a frequent complication after surgery of the hip and the pelvis. Although the pathophysiological entities responsible for the formation of HO remain largely unclear, muscle trauma is alleged to play a central role in the pathogenic mechanisms underlying HO. However, for this observation, made by many surgeons for decades, no objective evidence has been provided yet. Methods Fifty male Wistar rats were subjected to surgery of the right hip. The femoral canal was reamed in three steps up to 2 mm. Animals formed 2 groups: in group 1 (25 animals) every effort was taken not to injure the muscles. In cont…

Failure of OPHL type IIb due to undiagnosed Eagle syndrome

2021

A 52-year-old man with glottic-supraglottic tumour underwent open partial horizontal laryngectomy (OPHL) IIb. On the 12th day postoperative, laryngoscopy showed necrotic tissue at the level of pexy and an increased distance between tongue base and neoglottis; the neck CT showed cricoid arch rupture and rupture of the pexy. By re-examining the preoperative CT images, the ossification of stylohyoid ligament (Eagle syndrome) was detected and supposed as the possible cause of cricoid rupture due to its traction on the hyoid bone and therefore on the pexy. The stylohyoid ligaments were cut at their insertion on the hyoid bone and a tracheohyoidopexy was performed. Two months after surgery, the p…

Hand skeletal maturity and its correlation with mandibular dental development

2013

Objectives: Assessment of pubertal status and pubertal growth spurt in orthodontic patients has a considerable impact on the diagnosis, treatment plan and the outcome of orthodontic treatments. Hand-wrist radiography is routinely used to evaluate skeletal development. Some studies have shown that there is an association between bone development and different stages of dental calcification; therefore, the stages of dental calcification can be used as the first tool for diagnosis, in case there is an association. This study was performed with the aim to evaluate the association between the phases of dental development and the stages of skeletal maturity. Study design: In this study, a total o…

Hysteroscopic Management of Endometrial Osseous Metaplasia Mimicking a Foreign Body.

2021

May Autologue Fibrin Glue Alone Enhance Ossification? An Unexpected Spinal Fusion.

2016

Ossifying renal tumor of infancy

2007

A renal ossifying tumor of infancy is a rare event with few cases having been published, and the etiology has not yet been established. We report on two new cases of this unusual neoplasm. A 2-year-old boy presented with intermittent painless gross hematuria. After several diagnostic procedures, an open pyelolithotomy was performed and the histological diagnosis of renal tumor of infancy was finally made. The history of the second case is very similar. An 8-week-old infant presented with gross hematuria. As in the first case, an open pyelolithotomy was performed and a tumor entirely covered with blood clots was found in the renal pelvis and completely removed. A histological diagnosis of re…

Histological characteristics of the vertebral intercentra of Metoposaurus diagnosticus (Temnospondyli) from the Upper Triassic of Krasiejów (Upper Si…

2012

ABSTRACTOsteohistological characteristics of the large temnospondyl amphibian Metoposaurus diagnosticus from the Upper Triassic of Poland (Krasiejów locality) were determined using vertebral intercentra thin-sections from different regions and growth stages. The intercentra showed a trabecular structure in both the endochondral and periosteal domains. Endochondral ossification developed first, and the primary bone occurs near the periphery with a higher degree of remodelling in the centre. Periosteal bone deposition begins later; first on the ventral side, continuing laterally and finally onto the dorsal side. Periosteal growth rate was initially very rapid, and then subsequently decreased …

The microstructural variability of the intercentra among temnospondyl amphibians

2014

The histology of the vertebral centrum of the morphologically diverse Temnospondyli is poorly known. In this study, the variability of the histological framework of various taxa from several Permian and Triassic localities was investigated for the first time. Twelve intercentra, forming the anterior part of the diplospondylous centra of temnospondyls, were examined histologically. The intercentra of all studied taxa share a highly vascularized cortex on the ventro-lateral side and primary and secondary trabecular, endochondral bone on the dorsal side. A high variability is present, among others, within the arrangement of the vascular cavities, the density of the trabeculae and the distribut…

Earlier appearance of the ossification centre of the femoral head in breast fed versus formula fed infants.

2011

Eagle syndrome compared with stylohyoid syndrome: complete ossification of the stylohyoid ligament and joint

2017

A 65-year-old man presented with a history of type 2 diabetes, chronic obstructive pulmonary disease, and non-alcoholic fatty liver. He had had no injuries to, or operations on his neck, but had had right submandibular and retroauricular pain for years. Computed tomography with 3-dimensional reconstruction (Figs. 1 and 2) showed elongation of both styloid processes associated with pseudoarticulation of the hyoid bone on the right side. This confirmed the complete ossification of the stylohyoid ligament, but the patient did not want an operation to resolve it. Sin financiación 1.260 JCR (2017) Q3, 65/91 Dentistry, Oral Surgery & Medicine, 138/200 Surgery UEV