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Biomedical subjects

G Kaltenecker

Publications and source records attributed to G Kaltenecker.

9 recordsLinked to original sources
PubMed2001

[Minimizing allogeneic blood transfusion in knee prosthesis implantation].

The goal of blood management in orthopedic and trauma surgery is to minimize exposure to allogenic blood transfusion in elective surgical procedures. Pre-, intra- and postoperative techniques are available. In a retrospective study at our department we could show, that postoperative reinfusion in primary knee arthroplasty is an effective way to avoid allogenic blood transfusion. We evaluated two groups of totally 40 patients. Group I (20 patients) underwent collection of postoperative drainage blood and reinfusion (blood conservation system, CBC II ConstaVac, Stryker instruments), group II (20 patients) was treated without postoperative reinfusion. Group II required per patient 1.3 units of allogenic blood (totally 26 units), group I needed only 0.25 units of allogenic blood per patient (totally 5 units) by using the same guidelines for transfusion in both groups. There were similar preoperative and postoperativ hemoglobin and hematocrit levels in both groups. We recommend the use of postoperative reinfusion in addition with other blood saving techniques to reduce allogenic blood transfusion in primary knee arthroplasty.

Aged↗
PubMed2000

Apophyseal injuries of the proximal tibial tubercle.

Avulsion fractures of the tibial apophysis are rare. Seven cases were treated between 1993 and 1998 in our department. The treatment was conservative in 1 case, in the other 6 open reduction and internal fixation was used. The results after an average of 23 months were good. There were no growth disturbances.

Adolescent↗
PubMed1996

[Initial results of treatment of a two-stage surgical technique of chronic flexor tendon injuries with Kleinert modified early mobilization].

The authors present first results after secondary two-stage flexor-tendon reconstruction and a modified postoperative management according to Kleinert. Between 1990 and 1993 we treated eight men and two women with an average age of 35 (19 to 58) years. All injuries were in zone 2. We used the silastic rod (5 mm) as an active gliding prosthesis in stage I. All patients received a palmaris tendon graft in stage II. The patients were treated with a modified Kleinert splinting technique inactivating the palmar traction, employing extension by a rubber band during the night after the second week. We had no complications during the whole treatment phase, no rupture of the tendon grafts and no infection. In our functional results, we saw in one case a lack of PIP-joint flexion of 10 degrees and in another an extension deficit of 15 degrees in the DIP-joint. With this modified technique we achieved satisfying results especially in otherwise non cooperative patients.

Adult↗
PubMed1992

[Results after conservatively managed vertebral fractures of the thoracolumbar level with special reference to bony stenosis of the spinal canal].

Seventy-two patients with compression fractures of the lower thoracic and lumbar spine who were treated by the Böhler method from 1972 to 1987 were followed up to compare the clinical signs and the results of conventional radiography and spinal computed tomography. There were 33 men and 39 women with an average age of 44.3 years (23-69 years). Treatment by the Böhler method is indicated for fractures between T12 and L5, which constitute 60% of all vertebral fractures. The main distribution in our patients was T12 (n = 26) and L1 (n = 33). Four patients primarily had neurological symptoms. The mean duration of hospitalization was 16 days (4-54). In our results, back pain is the most frequent complaint. A comparison with the findings on the day of the accident showed that the vertebral deformity decreased in all cases (index: mean accident = 0.64; mean follow-up = 0.82). In the CT scan we found spinal stenosis in up to 30% in 9 patients (12.5%) with no neurological symptoms. Based on these results, the authors recommend the Böhler method in lower thoracic and lumbar compression fractures without neurological symptoms. The main aim of the treatment must be reduction of the vertebral deformity to a minimum in order to maximize the biomechanical integrity of the vertebral column and prevent degenerative changes. The use of computed tomography is recommended even in these fractures because of possible spinal stenosis. CT is accurate, especially in evaluating the nature of facet joint failure.

Adult↗
PubMed1990

[Primary stabilization of open fractures of the lower extremity with the interlocking nail--the results of a study of 91 patients].

The authors report on a series of open fractures (Type I and Type II) on the lower extremities of 91 patients, treated at the I. University Clinic of Traumatology, Vienna and at the Traumatologic Department of Wilhelminenspital, Vienna from 1975-1987. There were 25 open femoral- and 66 open tibial fractures. We have seen 60% Type I and 40% Type II fractures on the femur as well as on the tibia. 74% of the patients were male. The patients' ages ranged from 15 to 92 years with a median of 32 years. The main fracture type was the comminuted fracture with over 50%. In contrast to the references in the literature (9, 11, 21) we noticed an infection rate of only 1.2%. 96% of the operated and checked up patients received bone union with the interlocking nail. We cannot in any way attribute these results solely to the used implant. Conscientious indication in the application of the interlocking nail, an exact preoperative management with prophylactic antibiotic as well as an excellent operative technique are also taken into consideration. The choice of the static interlocking nail (73%) after the closed reduction (80%) of these open fractures is supposed to be a measure against infection. Due to these results we are of the opinion that the interlocking nail when selectively used in the hands of an expert can be recommended not only in closed fractures but also in Type I and II open fractures of the femur and the tibia as long as the special principles of treatment are not neglected.

Adolescent↗
PubMed1990

Lower infection rate after interlocking nailing in open fractures of femur and tibia.

Between 1975 and 1987 91 patients with Types I and II open lower extremity fractures (66 tibia and 25 femur) have been treated surgically with interlocking nailing at the I University Clinic of Traumatology, and the Trauma Department of Wilhelminenspital, Vienna. Our infection rate of 1.2% was found to be lower than figures cited in the literature. Conscientious indication of the interlocking nail in these circumstances cannot claim all the credit for these results, the appropriate preoperative management with preventive antibiotics together with excellent operative technique have to be taken into consideration as well. Reviewing these results, we have adopted the opinion that the interlocking nail, when selectively used in the hands of an expert, can be recommended not only in closed fractures but also in Types I and II open fractures of the femur and tibia, provided that the special principles of treatment in a particular case are not neglected.

Adolescent↗
PubMed1989

[Initial experiences with a new mounting system for AO external fixation].

The advantage of the herewith presented v-shaped unilateral external fixator lies in the combination of the stability characters of the v-shaped mounting with the convenience of the unilateral lay-out. The combination of the advantages of two mounting schemes that have already been clinically tested, suggest that these should be integrated into a single construction system. Both, the surgery procedure and the dynamics of the system have been described in detail. The clinical case studies document the first experience with this new mounting scheme.

Adult↗
PubMedDate not supplied

Determination of bone and tissue concentrations of teicoplanin mixed with hydroxyapatite cement to repair cortical defects.

A highly specific and sensitive isocratic reversed-phase high performance liquid chromatography (HPLC) method for the determination of the major component of teicoplanin in tissue is reported. Comparing fluorescamine and o-phthalaldehyde (OPA) as derivatizing agents, the derivative formed with the latter exhibits superior fluorescence intensity allowing detection of femtomole quantities. Pretreatment for tissue samples is by solid-phase extraction which uses Bakerbond PolarP C(18) cartridges and gives effective clean up from endogenous by-products. Linearity was given from 0.6 to 100 ng per injection. The coefficient of variation did not exceed 5.8% for both interday and intraday assays. It was found that when bone defects are repaired with a hydroxyapatite-teicoplanin mixture, the antibiotic does not degrade, even when it is in the cement for several months. The stability of teicoplanin in bone cement was determined fluorodensitometrically.

Animals↗