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Biomedical subjects

H G Edeland

Publications and source records attributed to H G Edeland.

At least 19 recordsLinked to original sources
PubMed1985

Some additional suggestions for an intervertebral disc prosthesis.

The paper, which refers to previous original papers on the subject, gives suggestions indicating four intervertebral disc prostheses, one utilizing bone cement for fixation to the bony substance of the motion segment. In the paper a modification of this inter-vertebral disc prosthesis offers a possibility for fixation of the prosthesis by osteointegration.

Biomechanical Phenomena↗
PubMed1981

Instrument for distraction by limited surgery in scoliosis treatment.

A principle for secondary instrumental spinal distraction by a rod appliance of the Knodt and Harrington types is described. The principle entails of the rotation of the screw rod by wire traction. The wire is, in a secondary procedure, unwound from a wire barrel mounted onto the screw rod in the primary operative procedure. The study describes the devices employed, modified according to the wire traction--instrument distraction principle. Previous results from intra-vital studies of the Harrington instrumentation have been reported from experiments performed. Thus, a final distraction force of 18 kp effected for correction of a scoliosis curvature, was taken as a value of distraction prior to secondary instrumental distraction by wire traction. In the extra vital study, the wire traction was adjusted to surmount a compressive force of 20 kpby means of a Bessmann weight scale. Wire traction created a distraction force of 39.5 kp, and a metric distraction, from the position resulting from 20 kp distraction to that resulting from 39.5 kp distraction, of 2.8 mm, which was considered to affect the prevailing scoliosis geometry to a considerable and sufficient extent.

Humans↗
PubMed1981

Suggestions for a total elasto-dynamic intervertebral disc prosthesis.

The essential considerations to be taken for the design of a composite elasto-dynamic intervertebral disc prosthesis (IDP) are discussed, and a disc implant, supposedly satisfying the demands for surgical and biomechanical applicability and biocompatibility, are outlined. The suggested IDP implant is composed of an elastic kernel, covered in a two-components telescoping shell, situated in a polymer slit-tube fundament, after preparation fixed to the respective vertebral bodies of the respective motion segment with bone cement. The approach to a lumbar motion segment is suggested to be by way of an abdominal and retroperitoneal incision and exploration.

Biocompatible Materials↗
PubMed1976

Compression and the osteotomy gap.

The existence of a clearly visible osteotomy gap by optimal roentgenography even in cases where high compression had been applied is exemplified. One case of fracture of the osteosynthesis material used in a medial displacement osteotomy is illustrated. It is suggested that this and similar accidents are sometimes consequences of imperfect surface contact at the operation, visible only by central beam radiography.

Animals↗
PubMed1976

Open reduction of central compression fractures of the tibial plateau. Preliminary report of a new method and device arrangement.

A new method of reduction and fixation of a uniformly depressed fracture of the tibial condyle is described. A curved steel probe, introduced through a cortical window in the uninjured condyle, is used to reduce the fracture fragments as well as to compact the fracture region (TV-monitored x-ray projectioning is desired). The instruments needed for the operative procedure are as follows: a probe for reduction and compaction, a tube and a plunger for deposition of bone transplants, and a forked plate. Five cases in which the curved probe reduction method has been used are reported.

Bone Nails↗
PubMed1975

Fracture of the scapular notch associated with lesion of the suprascapular nerve.

In a material consisting of 18 patients with scapula fractures, the scapular notch was involved in two cases. In one of these cases injury of the suprascapular nerve function was proved. The value of X-ray examination with projections visualizing the scapular notch is pointed out. EMG examination in selected cases with the combination of reduced supraspinatus muscle function and a fracture of the scapular notch is recommended in order to diagnose injury of the suprascapular nerve.

Female↗