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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 71 (1993), S. 387-391 
    ISSN: 1432-1440
    Keywords: Gottron's acrogeria ; Sarcoidosis ; Ehlers-Danlos syndrome Type IV ; Premature aging syndromes ; Cutaneous atrophy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The case of a 37-year-old male suffering from Gottron's acrogeria and cutaneous sarcoidosis is presented together with a thorough review of the literature. So far about 40 cases of Gottron's acrogeria have been described. An association of sarcoidosis and acrogeria has not been observed to date.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Der Unfallchirurg 102 (1999), S. 43-49 
    ISSN: 1433-044X
    Keywords: Key words Occult fracture • Conventional radiography • Scintigraphy • CT • MRI ; Schlüsselwörter Okkulte Fraktur • Konventionelle ; Radiographie • Szintigraphie • CT • MRT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Der Begriff „okkulte Fraktur“ kennzeichnet das Fehlen sichtbarer Frakturzeichen in der zur Erstdiagnose durchgeführten konventionellen Radiographie bei dennoch vorhandener Fraktur. Die Diagnosestellung gelingt erst im Verlauf oder mittels weiterführender Diagnostik. Die hierzu durchgeführten Szintigraphie- und CT-(Computertomographie)Untersuchungen verfügen jedoch nur über eine mäßige Sensitivität und Spezifität. Mit der Magnetresonanztomographie (MRT) steht ein Verfahren zur Verfügung, das sowohl die Frühdiagnose der „okkulten Fraktur“ als auch die Diagnose etwaiger chondraler und ligamentärer Begleitverletzungen erlaubt. In der vorliegenden Studie berichten wir über 23 Patienten mit einer traumatischen Fraktur in 5 verschiedenen anatomischen Regionen, bei denen die Diagnose bei negativem Röntgenbefund mit der MRT gestellt werden konnte.
    Notes: Summary The term “occult fracture” defines the lack of visible fracture signs in conventional radiography although a fracture exists. The diagnosis is made in the sequel or through further diagnostic procedures. The use of scintigraphy and CT examinations is limited by their moderate sensitivity and specificity. In contrast, MRI is a diagnostic tool that allows early diagnosis of a fracture and of accompanying chondral or ligament damage. We report on 23 patients with traumatic fractures at 5 different anatomical sites, all of which were negative by x-ray, but the diagnosis could subsequently be made with MRI.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Der Unfallchirurg 103 (2000), S. 248-250 
    ISSN: 1433-044X
    Keywords: Schlüsselwörter Achillessehne ; Ossifikation ; Okkulte Fraktur ; Key words Achilles tendon ; Ossification ; Occult fracture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Ossification of the Achilles tendon is the result of a traumatic, hypoxic injury of the tendon. The usually asymptomatic ossification has a clinical importance only in case of a new trauma. We report about a patient with an isolated fracture of the ossification without an accompanying rupture of the Achilles tendon. Because of the radiologically “occult” fracture the diagnosis could only be verified by MRI. With a conservative treatment without resection of the ossification we could reach painless recovery.
    Notes: Zusammenfassung Ossifikationen der Achillessehne sind u.a. Folge einer traumatischen, hypoxischen Sehnengewebeschädigung. Eine klinische Bedeutung erlangen die, primär asymptomatischen, Achillessehnenverknöcherungen erst im Rahmen einer erneuten Traumatisierung. In dem hier beschriebenen Fall ist es dabei zu einer isolierten Fraktur der Ossifikation ohne begleitende Sehnenruptur gekommen. Aufgrund der radiologisch “okkulten” Fraktur konnte die Diagnose nur kernspintomographisch gesichert werden. Durch eine konservative Behandlung ohne Resektion der Verknöcherung wurde eine beschwerdefreie Ausheilung erzielt.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archives of orthopaedic and trauma surgery 117 (1998), S. 163-166 
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The present investigation studied whether or not ventral derotation spondylodesis (VDS) screw fixation strength can be estimated preoperatively by means of radiology. Furthermore, comparison of the techniques applied was done to show which of them is most appropriate. The bone mineral density of human cadaveric lumbovertebral bodies was assessed by both dual-energy X-ray absorptiometry (DXA) and quantitative computed tomography (QCT). Trabecular structure was characterised by T2*-relaxation time magnetic resonance imaging (MRI). After ventral instrumentation of vertebral bodies with VDS screws, their axial pullout force was assessed as a reference value for initial stability of the implant. Data from each radiological method were correlated with it. The highest correlation with pullout force was registered for density of cancellous bone by QCT (r = 0.72; P 〉 0.001), immediately followed by DXA (r = 0.70; P 〈 0.001). T2*-relaxation time (MRI) correlated moderately (r = 0.55), whereas cortical bone density (QCT) showed a negligible correlation (r = 0.2). Results reveal that absorptiometrical techniques like DXA and QCT (cancellous bone) are the most appropriate ones to assess initial screw fixation strength in vertebral bodies preoperatively.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Neurosurgical review 21 (1998), S. 217-225 
    ISSN: 1437-2320
    Keywords: Anterior instrumentation ; CDH ; CDI ; Operative therapy ; Spondylodiscitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In a study the results recorded in 34 surgically treated patients with specific or unspecific spondylodiscitis after dorsoventral one-stage instrumentation with CDI and anterior grafting (group 1) were compared with those obtained in a group of 38 patients treated with anterior CDH instrumentation in combination with anterior grafting (group 2). The mean observation periods were 48.4 (19–82) months in group 1 and 29.0 (8–54) months in group 2. In both groups the infection healed after fusion without a secondary operation. In group 1 the mean values for blood loss, operating time, length of hospital stay and fusion length (3.5 segments) were significant higher than those in group 2; in particular, the fusion length was shorter (1.3 segments) in group 2. Only 8 patients in group 1 were treated with postoperative external support. The mean preoperative segmental angle of 18.2° (group 1) was corrected by a mean of 11.9°, and the reposition loss during follow-up amounted to an average of 2.7°. Group 2 showed a mean preoperative segmental deformity angle of 13.4°, which was corrected by 11.6°, and the loss of reposition was 2.9° on average. Even in florid spondylodiscitis a short-range anterior fusion of the affected spinal segment can be performed with a primarystable implant, avoiding a second operation without an increased risk of infection-related dislocation. In the authors' own experience a secondary dorsal operation can be avoided except in the case segment L-5/S-1, the fast mobilization without external support allows a up-to-date treatment in this severe spinal disease.
    Type of Medium: Electronic Resource
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