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Biomedical subjects

B Kristiansen

Publications and source records attributed to B Kristiansen.

At least 37 records · Page 2Linked to original sources
PubMed1986

Deafness after treatment with ear drops containing neomycin, gramicidin and dexamethasone. A case report.

We describe a patient with a polyethylene tube to the middle ear who developed severe deafness and vertigo after treatment with ear drops where neomycin B was considered to be the most likely offending agent. High concentration of this antibiotic in the ear drops and access of the solution to the round window membrane in the absence of inflammatory edema and secretion may have been significant factors contributing to this serious side effect. Less ototoxic preparations should be used in patients with perforated tympanic membranes or grommets.

Deafness↗
PubMed1986

Plate fixation of proximal humeral fractures.

We performed open reduction and internal fixation with a T-buttress plate in 32 fractures of the proximal humerus with severe displacement and/or fracture dislocation. In 27 cases acceptable reduction was achieved. In four cases infection developed, and the implant was removed in five cases because of impingement of the plate under the acromion and in two cases because of loosening. There was no nonunion, but four humeral head necroses. At the re examination of 20 patients after 2-7 years, nine were excellent or satisfactory and eleven unsatisfactory or poor. We conclude that the buttress plate offers satisfactory reduction and good stability at a high risk for complications. The indications for this method should be carefully considered, notably in the elderly, and the operation should only be performed by experienced orthopedic surgeons.

Adult↗
PubMed1986

Silastic arthroplasty in rheumatoid MCP-joints.

Resection arthroplasty using Swanson silicone prosthesis was performed in 74 MCP-joints in 22 patients, all with rheumatoid arthritis. Follow-up at 2 (1-7) years showed complete pain relief in 15 patients and considerable improvement in hand function; the average range of motion was unchanged but extension was improved and ulnar deviation and volar displacement were reduced. Complications included fracture of four implants, two superficial infections, one hematoma and one skin necrosis.

Adult↗
PubMed1985

Dislocation following total hip arthroplasty.

The rate of postoperative dislocation after Stanmore total hip arthroplasty in 427 cases was 4.9%; 1.4% were classified as recurrent cases. Retroversion of the acetabular component and postoperative joint laxity were the only factors that were found to predispose to dislocation. The importance of preserving the effective femoral neck length during total hip arthroplasty is emphasized.

Adult↗
PubMed1985

Biomechanical factors in loosening of the Stanmore hip.

A series of 33 Stanmore total hip replacements with aseptic loosening was compared to a matched control series without loosening. Risk factors were previous hip surgery and osteopenia of the proximal femur. Biomechanical factors, notably varus position of the femoral stem and insufficient cementation, were of significance for the implant loosening. Alteration of the operative technique is recommended, emphasizing a correct valgus or neutral position of the femoral component and improved cementation.

Aged↗
PubMed1984

Fractures of the proximal end of the humerus caused by convulsive seizures.

Fractures due to convulsions are known to occur. The purpose of this study was to find the frequency of convulsive seizures as the cause of fractures of the proximal end of the humerus, which are the most common of these fractures. Of 278 cases admitted to the department, 2 per cent occurred after a seizure without other contributory causes. The manner of injury is discussed, and it is demonstrated that the diagnosis is often delayed. The importance of early reduction in cases with dislocation or displacement of the fracture is emphasized.

Adult↗
PubMed1984

Evaluation of instruments for measuring grip strength.

Three instruments for measuring grip strength: the steel spring dynamometer, the Martin Vigorimeter and the My-Gripper, were tested in a universal testing machine to evaluate the linearity of the readings. Furthermore, a clinical study including 100 normal probands evaluated the applicability of these instruments. It was concluded that the steel spring dynamometer was not suitable for clinical use, due to its lack of precision. The Martin Vigorimeter and the My-Gripper were both very precise instruments. The My-Gripper seems to be preferable for clinical use because it is cheap and easy to handle. Also, the instrument can accumulate the results of several trials, facilitating the calculation of average grip strength. A nomogram showing the relationship between the dominant and the non-dominant hand is given.

Adult↗
PubMed1982

Surgical treatment of ankle instability in athletes.

Eighteen athletes with symptoms of recurrent sprain and instability of the ankle during activity were treated by reconstructing the lateral ligament by the Evans technique. Before the operation 55 per cent had given up all athletic activities because of pain, swelling or instability, and 17 per cent had restricted their activities. The average age at operation was 24.6 years and the average follow-up period 3.1 years. Normal stability was achieved in 67 per cent and improved stability in 11 per cent, but only 33 per cent were still engaged in athletic activities without any complaints from the ankle. The results are similar to other methods of surgical repair.

Adolescent↗