Biomedical subjects

R Eyb

Publications and source records attributed to R Eyb.

25 records · Page 2Linked to original sources

PubMedDate not supplied

[Paget's coxarthrosis. Implantation of a modular tumor reconstruction system. Case report].

A male patient aged 69 years suffering from Paget-coxarthrosis with a large distension of the proximal femur was implanted a cementless tumor reconstruction system. The surgical procedure consisted of opening of the femoral shaft with a special drill, insertion of the prosthesis and its anchorage within the healthy distal bone. By this method we were able to save the femoral muscle insertion planes. Twenty-eight months postoperatively the patient is pain-free and very satisfied with the outcome. The X-rays show a good fit of the prosthesis. The Harris Hip Score is now 90.1 points as compared to 46.4 points preoperatively.

Aged↗

PubMedDate not supplied

[Cement-free Zweymüller hip system. Results of a 5-year follow-up study].

85 patients with 96 cementless pressfit hip implants were followed over a period of at least 5 years postoperatively. Average Harris score was 87.5 points. One socket had to be exchanged because of aseptic loosening. Additionally, 5 implants developed radiolucent lines, only one of them totally around the socket. In no case an exchange of the stem was necessary; one stem initially sank by 4 mm axially but was stable at the last follow-up investigation. Only one patient personally is dissatisfied with the outcome of the operation. In no case, implant specific complications such as breakage of the implant, breakage or crack of the stem, or shattering of the pelvic girdle by acetabular-screwing could be observed.

Adult↗

PubMedDate not supplied

[Radiologic measurement of the behavior of lumbar intervertebral disks in idiopathic scoliosis based on so-called "bending" images].

Total disc mobility, segmental mobility, both depending upon location of the disc and upon its position within the scoliotic curve as well as the opening angle of the disc in the ap x-ray were measured in the so-called "bending-test" x-rays of the lumbar curve of 40 patients with idiopathic scoliosis. The measurements showed a maximum of mobility in the segments L2/3, L3/4 and L4/5. In no direct dependence an increased mobility of the most proximal motion segment against the next lower one of the lumbar curve was found. No direct relation between lateral flexion and degree of scoliosis was measurable. Mobility towards the convexity increases directly with the opening angle of the disc concerned while mobility towards the concavity decreases; lateral flexion remains constant altogether. The results achieved might become quite relevant in connection with the possible therapeutic progress in the treatment of lumbar scoliosis with enzymatic dissolution of nucleus pulposus.

Adolescent↗

PubMedDate not supplied

[The lateral profile of the lumbar vertebrae following lumbosacral spondylodesis--comparison between Harrington rods and a transpedicular fixation system (Zielke's USIS method)].

We compared the lateral profile of the lumbar spine after lumbosacral dorsal fusion in two groups of each 32 patients with comparable age, sex distribution and indication; one group had been fused with the use of two short Harrington rods, the other with the Universal Spinal Instrumentation System (USIS) according to Zielke/Harms. The sparing of motion segments using a transpedicular system is demonstrated by the average number of 1.7 fused motion segments compared to 2.2 with the Harrington rods. The average increase of cyphosis of the fused area could be reduced with USIS from 7.3 to 3.0 degrees in spite distraction. The greatest difference could be seen in cases of spondylolisthesis (2.0 degrees compared to 8.2) and in fusions including three segments (2.0 versus 7.0). No significant difference in total lordosis of the lumbar spine could be evaluated and there was no influence of preoperative mobility on the grade of postoperative cyphosis. The early results of lumbar fusion using USIS are clinically satisfying in spite of a relative high rate of rod fracture. measures to achieve a higher stability and diminish the rate of implant failure are discussed.

Adolescent↗

PubMedDate not supplied

[Experiences with ventral stabilization in vertebral metastases in the area of the thoracic and lumbar spine].

43 cases of tumor resection followed by ventral stabilisation are reported in 42 patients with metastases in the spine. Indications for surgery were beginning or incomplete transversal lesion of the spinal cord, bedrest for at least 3 weeks, unsusceible pain caused by instability, or unsuccessful conservative and radiotherapeutic treatment. 46.5% of the cases can be rated as good considering the time of survival and life quality, 18.5% can be judged as a partial success. 7 patients hat to be reoperated in the same level, most of them because of local recurrence. Complications occurred in 40% of the cases. These operations should be performed by a "term of specialists". Postoperative treatment with isotope-, hormone- or radiotherapy is decisive to obtain good results.

Adult↗

PubMedDate not supplied

[Clinical results following the transgluteal and anterolateral (Watson-Jones) approach to hip prosthesis implantation].

80 total hip endoprostheses with antero-lateral (Watson-Johnes) approach are compared with 77 total hip endoprostheses with transgluteal approach (Bauer) after a period of at least one year after the operation. In all cases a cementless implanted model has been used. After transgluteal approach we found less bleeding and hematoma, but slight increased periarticular ossifications. The clinical results (pain, range of motion, distance walked, walking aid, manner of walking) were only a little different. For the technic of implantation of the cementless endoprosthesis the transgluteal approach seems to be more useful.

Adult↗

PubMedDate not supplied

[Periarticular ossifications following implantation of cement-free total hip endoprostheses of the Zweymüller-Endler type].

Ectopic ossifications after 158 cementless implanted Total hip endoprostheses Type Zweymüller-Endler have been examined postoperatively within 12 months at the earliest. The rate of ossification was 39.9%. This range is higher than the mean range of cemented hip endoprostheses reported in the literature. The higher range of ossification is found in low grade ossification grade CA I. Severe ossification of grade CA III occurred only in a low percentage. The influence of various factors (as prophylaxis for thrombosis approach, duration of operation, sex, age, other diseases, complications) on the frequency of occurrence is examined. There was no significant result concerning these parameters. The main causes for ectopic ossification seem therefore to be dispositional and constitutional factors. Male patients under the age of fifty show ectopic ossification in the highest degree.

Adult↗