Biomedical subjects

C Rinna

Publications and source records attributed to C Rinna.

6 recordsLinked to original sources

PubMed2007

Rigid external fixation and condylar remodeling.

Condylar fractures, instead of other mandibular fractures, play a primary importance role because their high incidence and the historic controversy existent in literature regarding their treatment. Recent studies prove that conservative treatment of condylar fractures, although not determining perfect alignment of the fractured segments, leads to a series of histologic and morphologic healing processes ending with consolidation of the fracture and functional recovery of the TMJ (temporo-mandibular joint). In this study, we observed long-term results of 2 cases of bicondylar fracture treated with surgical reduction and rigid external fixation. Rx orthopantomography control 1 year after surgery showed condylar remodeling bilaterally with good functional recovery. Our school affirms that semirigid fixation system allows optimal function between the articular head and the glenoid fossa, with good tridimensional repositioning of the fractured segments.

Adult↗

PubMed1997

Early and late surgical treatment of orbital dystopia in craniofacial malformation.

Orbital dystopia is one of the most frequent clinical signs of craniofacial malformation. The term dystopia indicates the mono- and bilateral asymmetry of the orbits at least in one of the three-dimensional planes. The diagnosis is based on the clinical test of the patient with the support of diagnostic instruments such as teleradiography in both standard projections, axial computed tomographic (CT) scans at a rate of 1:1 through the neuro-orbital plan, and the three-dimensional CT. Good results of the surgical treatment depend on the patient's age and on adequate programming, which should consider the anomalies in the three spatial planes. The VTO is obtained through a protocol of analysis on cephalometric graphics of the teleradiographics on the CT at a rate of 1:1. The surgical treatment of orbital dystopia is different depending on the age of the patient and the cause of the orbital anomaly. In the case of growing patients, it is preferable to use the fronto-orbital bandeau technique so as not to damage the dental buds, whereas in grown patients Tessier's orbital quadrant technique is used. Even the fixation is quite different between patients who are growing and those who are already grown. In still-growing patients, rigid internal fixation is used only in some cases to avoid the interference with the growth mechanisms.

Adolescent↗

PubMed1995

Firearm injuries in maxillofacial region reconstructive surgery.

Firearms induce severe morphological and structural alterations on both soft and bony tissues of the face. It is therefore essential to restore their previous functionality. In our experience, maxillofacial lesions due to firearm shooting must be divided, from a locational point of view, into those lesions involving the upper third, those involving the medium third, and those involving the lower third of the face. Lesions of soft and bony tissues must be evaluated precisely through instrumental diagnostic examinations and axial and coronal computed tomographic projection, preferably with a three-dimensional construction, to be able to restore the previous functional integrity of the maxillofacial region. At a subsequent surgical time, it may be necessary to plan aesthetic corrections for recovery of the previous facial harmony.

Adult↗

PubMed1995

Aesthetic and functional reconstruction in intraosseus hemangiomas of the zygoma.

The incidence of intraosseus hemangiomas is very low. The mandible, the zygoma, the maxilla, and the frontal bone are the most frequent areas of localization in the craniomaxillofacial region. Surgery, without preoperative embolization, is always the best treatment for intraosseus hemangiomas of the zygoma. The radical removal of the tumor frequently causes a contour defect that has to be corrected. Calvarial grafts provide a good solution to the problem of reconstruction of bone loss. They are easy to prepare, near to the implant zone, and they do not require changes in the patient's position during the operation. The implants fixed by micro- and minifixation systems provide a good functional and aesthetic result. We, after a review of the literature on intraosseus hemangiomas of the craniomaxillofacial region, report two cases of intraosseus hemangiomas of the zygoma in which removal of the tumor and reconstruction with calvarial grafts have been performed.

Adult↗

PubMed1995

[Bicoronal approach in the management of frontal sinus fractures].

The frontal sinus is located at the level of the junction between the naso-ethmoido-orbital region, the cranial vault and the skull base and plays a particularly important role in the biomechanics of the centro-facial region. It represents a locus minoris resistentiae placed between the fronto-orbital frame, whose resistance to trauma is good, and the thin posterior fronto-ethmoidal structures. Fractures of the frontal sinus more frequently involve the anterior wall of the frontal sinus and, occasionally, also the posterior wall and the base of the sinus. Where the fracture involves the anterior sinsu wall alone, surgical reduction is indicated to correct cosmetic defects arising from an altered bone profile, either via bicoronal access or by direct attack when there are skin lesions too. If the fracture extends to the posterior wall of the sinus without causing bone displacement or dural lesion, most authors agree that only the fractures of the anterior wall should be treated to avoid obliterating the sinus cavity. When the fracture of the posterior wall is comminuted with displacement of bone fragments, there are usually dural lesions too; in this event, once dural plasty has been performed, it is necessary to cranialize the frontal sinus by demolishing its posterior wall. Fractures of the skull base, associated with a high frequency of lesion or obstruction of the sinusal ostio and severe infective complication, require cranialization of the sinus that is also separated from the cranial cavity using a median-pedicled pericranial flap. To control the point of fracture, a rigid fixation system can be employed (microplates) or osteosynthesis with metal wires that restore the eurhythm of the frontal-orbital region and simultaneously guarantee good stability of the repositioned fragments.

Accidental Falls↗

PubMed1995

[Simultaneous surgical correction of temporomandibular ankylosis and facial symmetry. Presentation of a case].

The authors stress the fact that the clinical course of a monolateral TMJ ankylosis tends to be more severe in young people. In this paper we analyze the diagnostic procedure for a tridimensional observation of any morphological and spatial alteration. The surgical procedure that permits the simultaneous correction of ankylosis and associated facial deformities is discussed.

Adolescent↗