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Biomedical subjects

D Kohn

Publications and source records attributed to D Kohn.

At least 73 records · Page 4Linked to original sources
PubMed1988

Unsuccessful arthroscopic treatment of pyarthrosis following anterior cruciate ligament reconstruction.

Postoperative purulent infection developed in the knee of a patient who had undergone anterior cruciate ligament reconstruction. Initially, arthroscopic lavage and debridement was performed, but was unsuccessful because the infection had spread into the soft tissues of the former surgical wound. Open debridement had to be performed to control the periarticular infection. It is important to stress that the extent of the infection has to be considered when instituting a method of treatment. It should be possible to clinically diagnose this extraarticular infection.

Adult↗
PubMed1988

[Knee arthroplasty in osseous ankylosis. A case report].

We report on the successfully performed arthroplasty of a knee joint in a 19-year-old female patient in whom a bony ankylosis in malalignment had occurred following an infection. The deciding factor for performing the arthroplasty was not only the patients wish to regain mobility in the knee joint, but also the existing possibility of postoperative mobilization of the joint on a CPM-machine in combination with analgesia by means of a peridural catheter.

Adolescent↗
PubMed1988

Thrombotic thrombocytopenic purpura and haemolytic uraemic syndrome in three siblings.

Two brothers and one sister had three variants of thrombotic thrombocytopenic purpura and haemolytic uraemic syndrome (the 'TTP-HUS' complex). The sister had a chronic fatal variant of thrombotic thrombocytopenic purpura with severe neurological manifestation. One brother had a chronic relapsing disease but the kidneys were not affected, and the other brother had haemolytic uraemic syndrome. This occurrence in one family supports the hypothesis that haemolytic uraemic syndrome and thrombotic thrombocytopenic purpura are actually two variants of the same disease.

Child, Preschool↗
PubMed1987

Fatigue properties of cast and heat treated Ti-6Al-4V alloy for anatomic hip prostheses.

The intricate shape of Ti-6Al-4V anatomic hip prostheses necessitates the use of casting as a fabrication method, since neither machining, nor forging or powder metallurgial processing are reasonably acceptable. Cast and hot isostatically pressed Ti-6Al-4V, however, has a relatively low ductility and reduced fatigue properties. Appropriate thermal treatments can improve these properties. Specifically, treatments comprising a beta-solutionizing and an aging step yield ductilities similar to the forged and annealed condition, and fatigue properties 11.5% above the non-treated condition. Such treatments produce small alpha-beta platelet colonies with a ragged, tortuous morphology. The reduction of scatter in fatigue strength is the result of the formation of this well controlled microstructure.

Alloys↗
PubMed1987

The clinical relevance of glenoid labrum lesions.

This study describes the microscopic and macroscopic appearance of the glenoid labrum in 106 unselected shoulder specimens. In a prospective investigation the clinical relevance of endoscopically confirmed lesions of the glenoid labrum in 46 patients is examined. Fibrillation (76%), detachment (50%), rupture (35%), and ossification (21%) of the glenoid labrum were the most frequent alterations in our autopsy material. Only 17 shoulders showed an intact limbus--despite the presence of the lesions of the labrum in 45 cases, none of the followed-up patients reported symptoms that could be related to this structure. Only in one patient, did part of the labrum have to be excised. According to the present results, we consider that most lesions of the glenoid labrum have little clinical relevance.

Adolescent↗
PubMed1986

Arthroscopy in acute injuries of anterior cruciate-deficient knees: fresh and old intraarticular lesions.

Sixty-four patients out of a much larger population who presented within 2 weeks of an acute injury to the knee were found at arthroscopy to have either a chronic tear or chronic incompetent anterior cruciate ligament (group I, 32 patients) or to have an acutely torn anterior cruciate ligament (ACL) (group II, 32 patients). Arthroscopy of both groups allowed the author to compare and contrast the lesions found in each group. Chondromalacia of the femorotibial joint is significantly more frequent in chronic ACL-deficient knees (p less than 0.05), and there is a tendency to degenerative meniscus lesions and chondromalacia patella in these knees too.

Adolescent↗