Biomedical subjects

W Blauth

Publications and source records attributed to W Blauth.

93 records · Page 6Linked to original sources

PubMedDate not supplied

[Spatial orientation of the facies patellaris femoris].

The present article reports on the geometrical conditions of the physiological movement of the patella. The geometrical shape of 18 femoral condyles and patella sliding areas was investigated in order to describe basic data for the design of endoprostheses. Surface and direction of the facies patellaris femoris were determined by means of radiographic, mechanical and optical measurements. The curvature of the deepest patella sliding groove proves a constant correlation with the dorsal condylar curvature. In the frontal plane the lowest points of the sliding area run with a dispersion of +/- 4 degrees to the vertical line related to the transverse tangent on the dorsal condylar surface. Considering deviations of leg alignment the measures come close to an angle of about 0 degrees. So the direction of the patella sliding groove differs from the normal valgus position of the distal femur. Therefore in artificial knee replacement a lateral tilt of the patella sliding groove should not be propagated as 'physiological'.

Biomechanical Phenomena↗

PubMedDate not supplied

[Results of knee joint arthrolysis surgery (author's transl)].

This work reports the results of operative treatment of knee-stiffness from 1973-1981 in the Department of Orthopaedic Surgery, University Kiel. 42 out of 46 occurrences of age, were post-operatively controlled. In most cases the stiffness was of traumatic origin. In more than one half of the cases the pre-operative controlled. In most cases the stiffness was of traumatic origin. In more than half of the cases the pre-operative degree of motion was less than 60 degrees. Intraarticular revision alone or extraarticular revision alone or a combination of both and other bone surgery was performed in approximately 1/4 of the patients respectively. The absolute range of motion, an average of 58 degrees pre-operatively, improved to 114 degrees post-operatively. The mean relative improvement of motion, in regard to a norm of 140-0-0 degrees, was 68% at discharge. Among our patients complication were seldom. In our opinion operative arthrolysis in indicated cases is a tried and proven method for treatment of stiff knees.

Adolescent↗

PubMedDate not supplied

[Arthrography in extension stiffness of the knee joint].

In the present paper the authors point out in the importance of arthrography in the preoperative diagnosis of stiffness of the knee joint; their findings are based on a study of 29 cases. The majority of the roentgenograms show the knees of patients who subsequently underwent surgical arthrolysis. The technique and special features of the procedure are described. The evaluated contrast films may be classified in three groups, the first including joints with a residual mobility of up to 50 degrees, the second including those with between 50 and 90 degrees and the third those with more than 90 degrees. Typical for the first group is an obliteration of the upper recessus and an omega-shaped form in AP films. Films from Group 2 only show constrictions of the recessus suprapatellaris. In the third group only slight changes are found, which in some cases could only be assessed more accurately by comparison with the healthy side. In cases of knee-joint stiffness due to extra-articular causes there is no correlation between the arthrogram and the range of mobility. The authors conclude that X-rays of the interior of the joint using contrast medium can be a valuable help in planning surgical treatment for fibrotically stiffened knee joints.

Adolescent↗