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Biomedical subjects

J Harms

Publications and source records attributed to J Harms.

At least 91 records · Page 5Linked to original sources
PubMed1977

[Pathology of paratenonitis achilleae in Athletes (author's transl)].

This is a report about the histopathological findings after excision of the inflammably overhead paratenon at top sportsmen, which were operated of cause of a paratenonitis. The good clinical results are written and the histological findings are described and discussed. The development of the paratenonitis is decleared. Pathological alterations of the paratenon at the tendon itself are difficulty to merk off. At the sportsmen the etiology of the disease is often a mechanical overloading of the tissue.

Achilles Tendon↗
PubMed1977

[Operative treatment of paratenonitis achilleae in athletes (author's transl)].

This is a report about indications, technics of operation, treatment after the operations and the results of the paratenonitis at the Achilles-tendon. Our 21 patients were top-sportsmen and the treatment conservative had no succes. All patients were able to continue their sportive activity after the excision of the paratenon.

Achilles Tendon↗
PubMed1976

[The vessel behavior of the bone following plate osteosynthesis and subsequent osteomyelitis. An experimental study at the dog tibia (author's transl)].

In this paper the revascularisation pattern of the dog tibia diaphyse following osteotomy and plate osteosynthesis with subsequent osteomyelitis is described at various stages. As compared to undisturbed plate osteosynthesis the differences and conformities in revascularisation are shown. It is attempted to interpret the vessel behaviour under clinical aspects.

Animals↗
PubMed1976

Stresses and functional adaptation of alloarthroplasty of the proximal femur in dogs using a selfcuring rippled prosthesis. A comparative biomechanical and morphological study (author's transl).

A self-adhesive prosthesis for youth patients is developed by Mittelmeier that is implanted without bone cement. After an implantation term of 1 year in animal experiment (dog), an adapted femur is compared with the contra-lateral normal femur. Strain gauges are used to determine bone strain under load. Further is determined external and internal construction change after endoprosthesis. The construction changes found are in connection with the changed bone strength. A cancellous change of bone at entire area of stem of prosthesis is called a "metaphysation" of bone shaft.

Animals↗
PubMed1976

[About the proposition of strength of animal-experimental results with hip endoprosthesis. A comparative analysis of the stress of the upper thigh of man and of four-leg (author's transl)].

Precise knowledge of the biomechanic of the hip of man and of animal is necessary to evaluate the procedures of adaption of the femur after endoprosthesis with animal experiment and the transfer into the endoprosthesis of the human medicine. After functional-morphological and biomechanical researches (Pauwels), the upper femoral end of the man is highly stressed by bending at direct level while lowly stressed at sagittal level. The present own biomechanical analysis of the hip of the dog reveal - under consideration of the gaits "pace", "trot" and "gallop" - that the coxal end of the femur of the four-leg compared with that of man is highly stressed by bending at sagittal level as well as at direct level. The observations are herewith clearly explained that intense reconstructions of the bone at artificial human thighs are found mainly at lateral and medial circumference of the bed of the prosthesis, at animal experiment however at dorsal, ventral as well as medial circumference.

Adaptation, Physiological↗
PubMed1975

[Biomechanical investigations of osteosynthesis at metaphys area of tibia and femur with selftensed angle plates (author's transl)].

Straight pressure plates create an eccentric tension force as well as an osteosynthesis with angle pressure plates. Both kinds of plate incline to gape the osteosynthesis and/or fracture gap. Therefore an overbending or additional angle allowance is necessary. In our biomechanical investigations we showed that at average bone stability, an overbending of the angle respectively an additional angle allowance of 3 degrees is most favourable. Uniform distribution of power transmission can be achieved at the entire osteotomie level using large and small angle plates with appropriate plate thickness and plate tension force. Sufficient stability in mobilisation is guaranteed without additional cast fixation.

Biomechanical Phenomena↗