PubMed Health⌕ Search

Biomedical subjects

R Reck

Publications and source records attributed to R Reck.

At least 37 records · Page 2Linked to original sources
PubMed1987

[Compatibility of glass-carbon implants in the middle ear--animal experiment studies].

28 tympanoplastic procedures with destruction and reconstruction of the ossicular chain were performed in rabbits. Vitreous carbon implants were used as prosthetic material. The animals were followed up from 14 days to one year. In 23 cases extensive inflammation of the middle ear mucosa was observed macroscopically. The histological findings were formation of an increasing fibrous capsule with duration of time, permanent foreign body reaction at the surface of the implants and missing formation of new bone or contact with bone respectively. Thus vitreous carbon seems to be a less promising material in middle ear surgery.

Animals↗
PubMed1987

[Involvement of the cervical vertebrae in inflammatory ENT diseases].

Nonspecific and specific inflammatory disorders of the cervical vertebrae can be caused by diseases of the ear, nose and throat. In 16% of the patients with a dislocation of the atlanto-axial joint the aetiological factors pertain to the field of ENT. In 60% of these patients the disease is caused by an infection of the upper respiratory tract.

Atlanto-Axial Joint↗
PubMed1987

[Surgery of facial paralysis in fractures of the petrous bone].

Follow-up of 38 patients with facial nerve paralysis in fractures of the petrous bone. Transmastoidal approach was performed in 23 cases. 15 patients underwent either translabyrinthine or transtemporal approach. The clinical and intraoperative findings and procedures are demonstrated. The need for surgical treatment in facial paralysis caused by petrous bone fractures is stressed.

Adolescent↗
PubMed1987

[Long-term follow-up of tympanoplasty using a ceravital prosthesis for the middle ear].

An 8-year follow-up of Ceravital middle ear prostheses showed an extremely good tolerance in the middle ear space. Incompatibility phenomena were not observed. Inflammatory reactions were neither caused nor supported by the implants. The implantation was always performed without interposition of cartilage. Extrusions were not observed. Long-lasting inflammatory processes destroy implants in the same way as they affect ossicles. Transient inflammatory periods (e.g. in the early postoperative period, POM) do not lead to any remarkable changes of the implant surface. In healthy middle ears, the hearing results are stable.

Ceramics↗
PubMed1986

[Therapeutic limits of endonasal fenestration of the maxillary sinus].

The endoscopical examination of the diseased maxillary sinus is a common procedure. In cases with obstruction of the ostium the intranasal antrostomy is carried out. 117 operations were followed up 1-7 years postoperatively. In 25.6% of the cases the windows into the inferior meatus were closed. The operation did not yield any improvement of the clinical features in 37% of the cases. There was no correlation to a open or closed window. In these patients the endoscopical and radiological examinations now revealed a diseased ethmoid. Instead of intranasal antrostomy, endoscopical endonasal surgery of the anterior ethmoid (technique of Messerklinger) is recommended. With this procedure, reestablishment of free ventilation of the maxillary sinus is combined with the diagnosis and the therapy of the diseased anterior ethmoid.

Adult↗
PubMed1985

[Reconstruction of the posterior wall of the auditory canal with Ceravital prostheses].

Different techniques to reconstruct the posterior outer ear canal wall with obliteration and ventilation of the mastoid cavity are reviewed. The suitability of canal prostheses, made from the bioactive glass ceramic Ceravital has been tested clinically in 76 patients. The operative technique and the postoperative results are reported.

Biocompatible Materials↗
PubMed1985

The bioactive glass ceramic Ceravital in ear surgery. Five years' experience.

Since 1979, various ceramics have been recommended as valuable implant materials in tympanoplasties. Such implants are used for the reconstruction of the ossicular chain or the posterior canal wall. Animal studies on bioinert and bioactive ceramics in the middle ear have been carried out to confirm their biocompatibility. Histologic and clinical findings have made it obvious that aluminum- or borum-aluminum oxide ceramics are well tolerated in the middle ear and may produce functional results, provided they are separated from the tympanic membrane or the footplate of the stapes by an interposition of cartilage. Porous tricalcium phosphate ceramics cannot be recommended for the reconstruction of the ossicular chain because they are degradable, but they may be useful for the obliteration of small mastoid cavities. Our five-year histologic and clinical experience with the bioactive glass ceramic Ceravital revealed in 1983 that this material is suitable for the reconstruction of the ossicular chain as well as of the posterior canal wall, without the need for protection by cartilage. Ceravital implants in fact behave like homologous ossicles.

Animals↗
PubMed1984

Bioactive glass-ceramics in ear surgery: animal studies and clinical results.

In the search for better materials for middle ear reconstruction, ceramics have been suggested as an alternative. The bioactive glass-ceramic Ceravital was made available to us for animal experiments and clinical trials. To test its suitability in ear surgery, 101 ear operations were carried out in 53 rabbits including the reconstruction of 78 posterior auditory canal walls and the insertion of 174 middle ear implants. Parameters studied include the effects of bone paté in inducing new bone growth, the chronological course of bone apposition and remodeling, microscopic examination of mucous membrane growth on the implants and degree of lysis of the implant. In the past two and one half years some 250 ossicular prostheses have been implanted in man for reconstruction of the ossicular chain. A statistical analysis of 119 tympanoplasties after a follow-up of one and one half years shows no perforations of the tympanic membrane over the implants or rejection of the prosthesis from the middle ear. The audiological results achieved were more favorable with the use of ossicular prostheses made of bioactive glass-ceramic than those using allogenic ossicular grafts. On the basis of the histologic findings and observed clinical results, the bioactive material Ceravital is remarkably well suited for reconstruction of the posterior auditory canal wall and for implantation in direct contact with the tympanic membrane.

Adolescent↗
PubMed1984

[Headaches caused by ENT diseases].

Headaches are a frequent symptom in ENT-patients. The complex sensory innervation of the ear, nose and paranasal sinuses is demonstrated. Heterotopic or referred pain must be differentiated from homotopic pain that is experienced at the point of injury. The nervous pathways of heterotopic otalgia are shown. The quality of pain of the most common rhinological and otological diseases is reported.

Ear Neoplasms↗
PubMed1984

[Results of fluorescein nose endoscopy in the diagnosis of cerebrospinal rhinorrhea].

To establish the diagnosis of cerebrospinal rhinorrhoea 45 patients were examined via intrathecal fluorescein-dye studies. Rhinorrhoea was suspected after head injuries and surgery of the base of the skull. The diagnostic procedure was in accordance with the technique of Messerklinger. In 8 patients a fluorescent secretion was detected and a CSF-leakage operatively proven. The result of the fluorescein tests, the x-ray tomographies and the RIHSA-studies are compared. The fluorescein technique is shown to be a useful diagnostic tool in the diagnosis of cerebrospinal leaks.

Brain Injuries↗
PubMed1984

[Paranasal sinus reconstruction with bioactive bone cement--a 5-year animal experiment study].

The newly developed bioactivated bone cement Palavital is composed of polymethylmethacrylate, glass fibers and bioactive glass ceramic. The superficially located glass ceramic particles offer the possibility of true bonding of the bone cement to the bony implantation bed. Reconstruction of the frontal sinuses and the skull was performed on 9 dogs. The follow up was 14 days to 5 years. The implants were checked by tomography and histology. All implants were tolerated without any inflammatory reaction. The bond between bone and implant was demonstrated. Palavital seems to be an improvement on bone cement on a polymethylmethacrylate base.

Animals↗
PubMed1984

[Aluminum oxide ceramics in reconstructive nose surgery. Histological studies in rabbits].

Experiences with Al2O3-ceramic implants designed to reconstruct the bony bridge of the nose and the nasal septum of rabbits are reported. The tissue reactions between the bony bed and the mucosa were examined by lightmicroscopy and fluorescencemicroscopy with incident light. Nasal septum implants were covered with connective tissue and coated with respiratory mucosa. Implants in bony areas always showed a layer of connective tissue between the implant's surface and the rebuilt bone. After a time period of 7 1/2 months all implants healed without inflammatory reactions and were solidly fixed to the surrounding tissue.

Aluminum↗
PubMed1983

[Pharyngocele].

Explore the source record for details and available documents.

Adult↗
PubMed1983

Bioactive glass ceramic: a new material in tympanoplasty.

The practicability of the bioactive glass ceramic Ceravital in ear surgery was tested in animals. The histological findings are presented. Over the last 3 years implants of bioactive glass ceramic were used in humans. Prostheses for the total or partial reconstruction of the ossicular chain and the reconstruction of the bony wall of the outer ear canal were fashioned. We have conducted about 300 tympanoplasties and 60 total or partial reconstructions of the bony wall of the outer ear canal. The otoscopic and functional results were satisfactory.

Animals↗
PubMed1983

[Histologic studies of aluminum oxide ceramic in the middle ear of rabbits].

Eight microscopical observations on Al2O3-ceramic implants which were designed in order to reconstruct the middle ear structures in rabbits are reported. The implants remained in the middle ear for a period of up to 7 months. The implants were covered with connective mucous tissue and implants reconstructing the external acoustic meatus were covered with new bone with a fibrous tissue interposition. The implants had all healed without irritation.

Aluminum↗