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Biomedical subjects

D Havemann

Publications and source records attributed to D Havemann.

At least 37 records · Page 2Linked to original sources
PubMed1991

[Ultrasonic assessment of the ankle joint in supination trauma].

Comparing 20 healthy subjects to 31 injured patients in this study it is demonstrated that ultrasound examination appears to be a reliable tool in the diagnosis of ligamentous inversion force injuries of the ankle. The ultrasound diagnosis was confirmed by conventional standard and on the tension X-Rays. When lateral collateral ligaments were ruptured mean differences of 2.3 mm for the anterior talofibular ligament and 5.5 mm for the calcaneofibular ligament, respectively were obtained between X-Rays in standard and on the tension position. In comparison, the values in the control group (no ankle injury) were 1.4 mm and 2.2 mm respectively. The results shown in this study are mainly in keeping with the present literature.

Adolescent↗
PubMed1990

[Current status of surgical treatment of the unstable spine with special reference to neurosurgical indications].

The presently available surgical techniques will practically always allow stabilization of the vertebral column in case of injuries indicating the need for surgery. Patients can be subjected to early functional treatment and introduced to rehabilitation training without requiring the plaster casts that used to be major obstacles to mobilization. Excellent results can be obtained in injuries of the thoracic and lumbar vertebral column if surgery is performed early, using less invasive dorsal stabilization techniques. Dorsal intervention is also possible in polytraumatic and intensive-care patients whose overall condition prohibits a ventral approach because of the stress involved in such surgery. During a period of just five years traumatologic surgery of the vertebral column has advanced by leaps and bounds, while proving that in surgery of the vertebral column close cooperation of neurosurgeons and surgeons is mandatory because of the hazards involved with particular regard to neural structures. In this manner a safety factor is created from which the patient benefits because such experience is a prerequisite for achieving good overall results. Surgery of the vertebral column is not just general surgery; in fact, it usually involves a large number of personnel and technical equipment such as only well-staffed and well-equipped institutions have at their disposal, but the results achieved at Kiel university have shown that zeal and purposefulness enable the successful management even of technically complicated interventions.

Cervical Vertebrae↗
PubMed1990

[Accident mechanisms and classification in distal radius fracture].

The form and severity of fracture of the distal radius as well as the concomitant injury of discoligamentary structures of the wrist depend on the position of the wrist at the moment of hitting the ground. The width of this angle influences the localization of the fracture. Pronation, supination and abduction determine the direction of force and the compression of the carpus and the different appearances of ligamentary injuries. The classifications of these fractures published by Frykman (1967) and M. E. Müller et al. (1989, AO-Group), incomplete, are useful for objective evaluation or documentation and may suggest indications for treatment when critically used.

Biomechanical Phenomena↗
PubMed1989

[External fixators in treatment of severe fractures of the pelvis].

The use of external fixation for pelvic injuries is mainly determined by the type of pelvic girdle fracture and by the severity of the general injury. Exact diagnosis of the extent of injuries can be made with a pelvic X-ray a.p. Pennal's technique and CT imaging. The iliosacral joint can be repositioned by transduced compression via Schanzscrews inserted above the acetabulmum and directed toward the iliosacral joints. Triangular compression frame construction is applied along the plane of the pelvic inlet. The advantages include easier intensive care, early functional mobilization, minimised trauma and decreased blood loss. Disadvantages are the risk of pin tract infection and patient discomfort. Of 92 patients treated thus, these were 11 cases of ankylosis of the iliosacral joint, two malunions and two persistent instabilities of the pelvic girdle.

External Fixators↗
PubMed1982

[Primary operative repair of acute knee joint ligament injuries; results (author's transl)].

From 1978 to 1980 43 patients suffering from ligament injuries of the knee-joint immediately underwent definitive surgical repair. The follow-up of 31 patients showed 8 patients with excellent results, 13 with good results, 7 with satisfactory results, 2 with poor results, and 1 with a bad one. Instability could be found in the antero-medial compartment of 15 patients, in the antero-lateral compartment of 7 patients, in the postero-medial compartment of 2 patients. There was 1 case of instability in the postero-lateral compartment. We recommend to perform the repair as soon as possible and in the postoperative period as well as early mobilisation under supervision of an experienced physiotherapist.

Adult↗
PubMed1980

[Pelvic fractures of seat belted car occupants].

From November 1974 to June 1978 60 severely injured car-occupants wearing seatbelt were treated at the department of surgery, University of Kiel. Ten of them sustained pelvic fractures. The cause of the injury was a direct pelvic trauma from the crashed car in 6 passengers. The maximum load on the pelvis was exceeded by the seatbelt during the delay of the car only in 4 patients. Contrary to the trauma by the lap-belt with abdominal-, lumbar spine, and pelvic injuries (seatbelt-syndrome by Garrett and Braunstein [5]) we found car-occupants with a threepoint-seatbelt injuries of the thorax, of the head with facial fractures and rarely with cerebral trauma, and of the legs with tarsal fractures. In our cases and in the literature pelvic fractures of car-passengers, who are wearing threepoint-seatbelts, are rare.

Accidents, Traffic↗
PubMed1977

[Antiphiogistic drugs. Sudies on the pharmocokinetics of anti-inflammatory agents].

The kinetic behaviour of radioactively labeled acetylsalicylic acid (ASA), phenylbutazone (PBZ), indometacin and dexamethasone in rabbits with knee joints experimentally inflamed can be summarized as follows: 1. Under control (non-inflammation) conditions as well as during inflammation, subthreshold doses of 14C-ASA intravenously (i.v.) administered were eliminated from the blood in a fast and slow biphasis process. The changes of the concentration in the perfusion fluid were very similar compared to the changes in the blood. However, they were enhanced during experimentally induced synovitis. 2. Subthreshold does of 3H-phenylbutazone i.v. administered were eliminated from the blood like 14C-ASA in a biphasic process. During an experimentally produced inflammation of the joints, the blood level decreased rapidly. The concentration of radioactivity in the perfusion fluid was very low. 3. In constrast, 3H-indometacin injected like ASA and PBZ in subtherapeutic dosage diappeared from the blood in a threephasic process. The uptake into both the normal and the inflamed synovial space was biphasic. Under both conditions the perfusion fluid contained low concentrations of the drug. 4. 3H-dexamethasone (subtherapeutic dosage) displayed a biphasis fall of concentration in the blood: a fast first phase and a slower second phase. With inflammation of the kneejoint, the elimination was characterized by a three-phase slope and was significantly faster compared with control animals. While the alterations of ASA and indometacin level in the perfusion fluid were corresponding to the decrease of the blood concentration, the uptake of dexamethasone into the synovial space did not show any change. 5. Under control conditions. 3H-dexamethasone (subthreshold doses) injected intraariculary was rapidly detectalbe in the blood. However, systemic absorption was considerably faster under inflammation conditions; the blood level was lower than following administration of 3H-dexamethasone into the normal knee-joint, the distribution from which was not uniform. After pretreating the animals with high does of hydrocortisonacetate, the i.v. application of 3H-dexamethasone was followed by a delayed first phase of the biphasis process of elimination. 6. Autoradiographic studies revealed 14C-ASA to be accumulated in the synovial fluid under normal conditions and in the periaricular connective tissue under inflammation conditions.

Animals↗