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Biomedical subjects

J Eulert

Publications and source records attributed to J Eulert.

At least 55 records · Page 3Linked to original sources
PubMed1995

[Pigmented villonodular synovitis of the knee joint--long-term follow-up and therapeutic concept].

Because of pigmented villonodular synovitis (PVS) 17 of 14,500 knee operations were accomplished at our institute between 1975 and 1993. Diffuse PVS (DPVS) was observed in 7 patients, local PVS (LPVS) in 9 patients; in 1 case LPVS was diagnosed on both joints. 15 knees could be examined 4.8 years after first surgery. 3 recurrences (42.9%) were found in the group of DPVS. In the group of LPVS no recurrent tumor growing was observed. It is demonstrated that partial arthroscopic synovectomy is a sufficient therapy in LPVS. The recurrence rate of DPVS ranges from 8 to 50%, the mean recurrence rate described in literature is 31.3%. Neither arthroscopic nor open synovectomy lead to a complete healing of DPVS. Recurrent arthroscopic synovectomy and regular clinical examination using sonography and particular MRI are the best therapeutical concepts in DPVS.

Adolescent↗
PubMed1994

Dorsal hemivertebrae in children's lumbar spines.

STUDY DESIGN: Only small numbers patients with dorsal hemivertebrae have been reported. The natural course of this disease remains unpredictable, especially regarding the development of neurologic impairment. Two children with congenital dorsal hemivertebra with progressive kyphosis of the lumbar spine are presented. Onset and method of treatment are discussed. OBJECTIVES: Two boys with kyphosis due to dorsal hemivertebrae of the lumbar spine were followed with clinical examination, anteroposterior roentgenograms, and magnetic resonance imaging. One patient was in follow-up for more than 4 years postoperatively. The other patient, who has not undergone surgery, has been in follow-up for more than 2 years, undergoing reassessment every 4 to 6 months. SUMMARY OF BACKGROUND DATA: Spastic paralysis developed in one patient with dorsal hemivertebra and spina bifida. The other patient with dorsal hemivertebra and sacral agenesis had no neurologic deficit. METHODS: A dorsal approach with resection of the dorsal hemivertebra and short dorsal fusion with internal fixation was done in one patient. The other patient underwent clinical and radiologic follow-up. Method and onset of surgical treatment were compared with other studies. RESULTS: Progressive spasticity was seen in our first patient. This could be reversed by resection of the hemivertebra and monosegmental fusion. Alignment of the spine and normalization of the width of spinal canal were achieved. The second patient has not had a neurologic problem. Surgical treatment will be performed when indicated. CONCLUSIONS: A posterior approach is recommended for a dorsal hemivertebra. Decompression of the spinal canal can be achieved by resection of the dorsal hemivertebra and short dorsal fusion with internal fixation. Surgery should be done early to avoid late neurologic impairment.

Age of Onset↗
PubMed1991

[Surgical treatment of anterior shoulder instability].

Long-term results obtained with the procedures hitherto regarded as standard and new findings about the etiopathogenesis and biomechanics of shoulder instability allow the conclusion that there is no single technique that is suitable for all forms of instability. Rather, an optimal surgical treatment should be selected with regard to the particular pathologic anatomy. For the majority of anterior instabilities--most of which are traumatic in origin--lasting reattachment of the capsule ligamentous structures to the lower anterior glenoid rim without a change in the original anatomical conditions is indicated. This concept, first described by Perthes and made known by the publications of Bankart, has been incorporated into several operative procedures and has been subjected to various modifications and technical innovations, including adaptation for arthroscopic methods. In a small number of instabilities deformations of the bones articulating on each other in the joint are found. These should be compensated if they affect the biomechanics. Most instances of shoulder instability caused by constitutionally determined laxity of the capsule should be treated conservatively. Not until such measures have failed should an operation be carried out; depending on the extent and directions of the usually multi directional instability, different methods of tightening and strengthening of the capsule are required.

Biomechanical Phenomena↗
PubMed1985

[Autotransfusion and plasmapheresis in preparation for surgery. Behavior of coagulation].

With the current day implementation of methods of autotransfusion one retransfuses if possible only washed red cell concentrates and eliminates the plasma. In the case of operations where patients undergo large blood loss, one must effect a substitution for the lost plasma volume and the lost clotting factors. In addition to electrolyte and colloidal solutions one can use a substitution of homologous and also autologous fresh frozen plasma (FFP). The effects of different substitutes on the clotting reaction has been investigated in 47 patients on whom extensive orthopaedic and also traumatologic surgical operations have been performed. By the combination of homologous blood and homologous FFP as also with autologous red cells and homologous FFP the clotting reactions remain the same. This determines the advantages of autotransfusion as compared with conventional techniques but, in addition, there is a saving in the usage of homologous blood. Where an operation can be planned in advance, the necessary FFP can be obtained from the patient. By utilisation of autologous FFP the operative and post- operative blood losses are reduced. As a result it is possible e.g. in total hip prosthesis, in approximately 90% of all cases, to operate without using homologous blood or plasma. The determined stability of AT III in autologous plasma--without AT III prophylaxis of thrombosis by Heparin is ineffective--and all other clotting factors leads to an expectancy of a not activated clotting mechanism and at the same time to low thrombosis risks.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1983

Scoliosis and kyphosis in dwarfing conditions.

Structural scoliosis and kyphosis are mainly caused by asymmetric ossification of the vertebrae. Dynamic factors influence the development of the deformities. Rotational instabilities, the combined result of asymmetric ossification and dynamic forces, have a particular severe prognosis. Progressing curvatures need adequate treatment. In peculiar cases early fusion is indicated.

Braces↗
PubMed1982

[Conservative therapeutic procedure of fractures of the os calcis based on late results (author's transl)].

Difficult fractures of the calcaneus are therapeutic problem today. From 1965 to 1977 147 patients were non-operative treated in the department of general surgery - including cases from department of orthopedic surgery. 67 patients with fractures of the os calcis were controlled between 3 and 15 years after accident. The various methods of conservative treatment are discussed. The early functional treatment had the better late results than other conservative methods i.e.: fewer pain and better flexibility of the talo-calcaneo-navicular and talo-calcanean joint, sooner taking up of the former occupation and lower decrease in performance.

Calcaneus↗
PubMed1981

[Pathogenesis and surgical treatment of "periarthritis humeroscapularis" (author's transl)].

The technique according to Dautry takes into special consideration the conflict between the supraspinal tendon and the coraco-acromial ligament. Postoperative follow-up treatment is of particular importance. Follow-up examinations were performed in 84 patients with a follow-up period between one and 14 years. The results were graded "good" to "very good" in 85% of the patients. The poor results are subjected to a special analysis. The relevant indication and contra-indication is shown for each case. The advantages offered by this method are discussed and compared with the other currently employed methods.

Adult↗
PubMed1979

[Elimination of partial premature epiphyseal closure by transplantation of epiphyseal cartilage. An experimental study (author's transl)].

An experimental study was made on 118 rabbits aimed at restoring bone growth after partial epiphyseal closure. In a first stage, a partial epiphyseal closure was made at the level of the lower femoral growth plate by excision of the growth cartilage and insertion of a bone graft. In a second stage, the bony bridge was removed and a segment of iliac crest growth cartilage was transplanted. It was concluded, on the basis of radiographic and histological studies that the best results were obtained when the growth cartilage was transplanted alone or with a thin layer of bone. The results were poor when the layer of bone transplanted with the cartilage was too thick.

Animals↗