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Biomedical subjects

W Dihlmann

Publications and source records attributed to W Dihlmann.

At least 19 recordsLinked to original sources
PubMed1996

[Comparative roentgenometry of the hand in aging].

Increasing age is a risk factor for the development of osteoarthrosis of the joints of the hand in adults between 21 and 60 years of age. Only in the very old (> or = 80 years) is osteoarthrosis of the hand part of the age related degeneration. The literature contains different parameters and indices correlating the amounts of minerals and ashes of metacarpal bones. Our results speak in favour of the presumptions published by Exton-Smith et al. (1969 b) that bone mass belongs among the biological characteristics of old age. Our investigations of hand roentgenograms reveal that remodeling of the joint socket as described by pathologists is not a general but an elective phenomenon. With age the wrist shows only an increasing angle of the radial joint surface (males, right hand) and there is a variation of form in the medial sesamoid bone at the first metacarpus (males, left hand).

Absorptiometry, Photon↗
PubMed1995

[Technique and economics of first worldwide roentgen conference via public phone lines with the Medical Desktop-Conference and Integrated Services Digital Network].

The introduction of the world's first Medical Desktop-Conference via public phone lines (ISDN-S2M) in spring 1994 for the weekly discussion of radiological findings with 25 orthopedic surgeons has proved the effectiveness of this system developed by the project BERMED. The use of standard hard- and software as well as ISDN are the most important factors to keep the system costs low. Technical advantages can be seen in the immediate, loss-free transmission of image and other patient-related data and in the integration of digital archives. Medical advantages are the 24-hour-availability of the radiologist and quality-control of the radiologists work. Practitioners and external hospitals can be tied closely to radiological service centers by using ISDNetwork.

Computer Communication Networks↗
PubMed1993

The acquired hyperostosis syndrome: a little known skeletal disorder with distinctive radiological and clinical features.

The acquired hyperostosis syndrome (AHS) is a chronic inflammatory disorder of bone of unknown etiology. It is accompanied by circumscribed hyperostosis which can be associated with ossifying lesions at sites of tendinous and ligamentary insertions and erosive or non-erosive arthritis. The predominant location of lesions is the sternocostoclavicular region (approximately 80% of patients), less frequent are involvement of the spine, pelvis, and appendicular skeleton. In 20%-60% of cases AHS is associated with palmoplantar pustulosis, psoriasis, or severe acne (acne fulminans or conglobata). The X-ray appearance of AHS is a more or less homogeneous increase in density with blurred margins, which on scintiscan with labeled phosphate compounds is associated with intense accretion of tracer. These features are associated with a variable increase in the acute phase reactants and a conspicuously low increase, if any, in serum alkaline phosphatase. The therapeutic modalities which have been used so far are entirely symptomatic. Long-lasting improvement has been reported following percutaneous anti-inflammatory radiation therapy.

Acne Vulgaris↗
PubMed1993

[Acquired hyperostosis syndrome (so-called pustular arthro-osteitis). Review of the literature including 73 personal cases].

The acquired hyperostosis syndrome (AHS) (best known synonym: pustulotic arthro-osteitis) is a system disease of the supporting and gliding tissue with sites of predilection characterized by inflammation-induced bony reconstruction of positive balance. This syndrome is affiliated with the seronegative spondylarthropathies. The main finding is the sternocostoclavicular hyperostosis in about 80% of patients. Focal hyperostoses also occur on the skeleton of truncus and extremities and joints. AHS is accompanied by psoriasiform and acneform dermatoses. Overlapping findings with spondylitis ankylosans are reported. Terminology, aetiology, nosology, pathogenesis, histomorphology, clinical and laboratory findings, complications, imaging diagnostic, differential diagnosis and therapy of AHS are discussed. Knowing AHS helps to prevent misdiagnoses (as especially bacterial osteomyelitis, spondylitis, osteoplastic tumor and metastases) and interventional diagnostic procedures.

Diagnosis, Differential↗
PubMed1992

[Pericoxal fat stripes and the capsule of the hip joint. The anatomical-radiological correlations].

The capsule of the hip joint can always be demonstrated on antero-posterior radiographs provided two conditions are met: 1. the so-called gluteus minimus fat stripe is shown and 2. the exposure is made in maximal external rotation which can be either active or, better still, passive. Under these conditions the joint capsule appears as a soft tissue band stretched between the margin ot the acetabulum and the upper end of the greater trochanter. Effusions or oedemas of the hip joint cause lateral displacement of the gluteus minimus fat stripe. Anatomical and radiological comparisons, including computed tomography, confirm that the joint capsule of the hip can be demonstrated in this way.

Adipose Tissue↗
PubMed1992

[Pelvic roentgenometry of the third kind: age- and sex-related measurement results in adulthood].

Normal values in adults for the hip joint (3.5-6 mm), the sacro-iliac joint (1-3.5 mm) and the symphysis (up to 7.5 mm) were obtained by measurements of a.p. views of the pelvis. Contrary to the literature there was no sex difference as regards the CCD. The roentgenometric features of the female and male pelvis depend on the pubic angle, the transverse diameter of the pelvic inlet and the sulcus paraglenoidalis. In females there are age-related changes consisting of a reduction of the pubic angle, increasing height of the symphysis components of the pubis and an increase in the transverse diameter of the pelvis. In the male, age changes consist of an increase of the symphysis component of the pubis and the transverse diameter of the pelvis.

Adult↗
PubMed1992

[Adhesive (retractile) capsulitis of the hip joint in diabetes mellitus. An x-ray histomorphological synopsis].

Adhesive (retractile) capsulitis of the hip joint is a rare complication (association) of (juvenile) diabetes mellitus. The clinical features, plain radiographic and CT findings and histomorphological appearances of this condition are described and attention is drawn to changes in the elastic tissue in the fibrosed capsule. Three diagnostic radiological features have been defined; in their presence, arthrography or diagnostic arthroscopy need not be performed.

Adult↗
PubMed1991

Acquired hyperostosis syndrome: spectrum of manifestations at the sternocostoclavicular region. Radiologic evaluation of 34 cases.

Thirty-four patients with chest wall hyperostosis, a condition which has been designated by various terms in the literature were evaluated radiologically. We prefer the name acquired hyperostosis syndrome (AHS), which we categorize into the complete, incomplete and possible form. In complete AHS, sternocostoclavicular hyperostosis is associated with axial and/or peripheral (endosteal, periosteal, enthesopathic, metaplastic) hyperostosis and with psoriasiform or acneform dermatosis. In addition, these three manifestations are accompanied by erosive or non-erosive peripheral and/or axial arthritis to a variable degree. Sometimes, concomitant findings which are consistent with ankylosing spondylitis are also to be found in the axial skeleton. AHS is manifested at 11 different sites on the anterior chest wall. Ossification forms of the costal cartilage, inflammatory enthesopathies (three different insertions) and focal hyperostoses as well as processes of remodelling of the ribs, clavicles and sternum which are described in detail have particular diagnostic significance. AHS can start simultaneously at one, two or several sites on the anterior chest wall. Conventional tomography (possibly supplemented by CT) is necessary for early diagnosis and for analysis of the various findings on the anterior chest wall.

Adult↗
PubMed1991

[Alloarthroplasty of the hip joint. Radiologic diagnosis of loosening and infection in cemented total endoprostheses].

Patients with problems following implantation of cemented total hip prostheses must be clinically examined. This examination is followed by a series of diagnostic imaging procedures. These include X-ray diagnosis, 3-phase 99mTc-MDP bone scans, scintigraphy for inflammation, and arthrography, performed singly or as sequential studies. X-ray findings and scintigraphic patterns arousing or confirming a suspicion of aseptic (mechanical) or septic (infectious) loosening of the prosthesis are evaluated and discussed.

Hip Prosthesis↗
PubMed1990

[Supercilium acetabuli. A stress indicator of the hip joint cartilage].

A thousand radiographs of the hip joints in adults were evaluated quantitatively and the following statistical conclusions were drawn: the normal forms of the supercilium acetabuli are either parallel or convex. Wedge-shaped supercilia indicate increased stress on the cartilage only in cases with hip dysplasia. A supercilium of more than 4mm raises the suspicion of increased stress on the cartilage. Normally, the joint space as shown on a radiograph does not fall short of 3mm. Eight formulas have been defined which can be used after planimetry of the supercilium and the articular surface in order to indicate increased stress on the cartilage and a risk of developing an arthrosis of the hip. These formulae are of practical value if the radiographs appear normal to visual inspection.

Acetabulum↗
PubMed1989

[The bursa iliopectinea--a morphologic-computed tomographic study].

Study of 80 anatomical preparations and CT of 130 patients has shown that the ilio-pectineal bursa may be non-communicating, communicating or septate. Under certain morphological and pathological conditions the ilio-pectineal bursa may be visible on CT. Amongst these is the presence of fat or calcium in or around the bursa. Effusions into the hip joint may make it possible to identify the bursa on CT, even when it is non-communicating. A posterior arthrocoele of the hip joint is described and its CT appearances are demonstrated.

Aged↗
PubMed1989

[Pre- and postoperative magnetic resonance tomography of osteochondrosis dissecans].

Thirty-five patients treated surgically and three treated conservatively were examined by MRT. This proved to be an imaging method which could provide information concerning the state of the bone fragments, the continuity of the joint cartilage and the state of reintegration of the dissected fragment. This was fixed by means of fibrin, autologous spongiosa and resorbable pins.

Follow-Up Studies↗