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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of orthopaedic surgery & traumatology 7 (1997), S. 271-275 
    ISSN: 1432-1068
    Keywords: Arthroscopic lateral release ; Patellar compression syndrome ; Section arthroscopique de l'aileron rotulien ; Syndrome fémoro-patellaire
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Dans cet article nous présentons la technique, les résultats ainsi que les complications et les indications de la section de l'aileron rotulien externe et la capsulorhaphie interne, à partir des résultats obtenus par l'examen de 7o malades souffrant les uns d'une légère latéralisation rotulienne externe et d'une hyperpression fémoro-patellaire externe (42 malades), les autres d'une luxation recidivante de la rotule (28 malades). La moyenne d'âge était de 26.2 ans (entre 9 et 54 ans). Au moment de l'examen de contrôle (m=64 mois) les malades ont été soumis à un examen clinique et radiologique. Les résultats ont été évalués conformément au score de Crosby et de Insall. 77 % des patients traités par relâchement latéral externe étaient satisfaits du résultat de l'opération (score analogue visuel) et 68 % des patients traités par capsulorhaphie. Par contre seulement 45 % des malades souffrant d'une ar-throse fémoro-patellaire traités par relâchement latéral externe parlaient d'une nette amélioration. Le score dit de Crosby et Insall donnait des résultats très significatifs mais ne montrait aucune différence parmi les résultats obtenus dans ces trois groupes. 13 % des malades souffraient d'un glissement de la rotule anormal en mobilisation active. Le test de glissement passif de la rotule montrait une hyper-mobilité de la rotule vers le côté latéral dans 37 % des cas et vers le côté médial dans 8o % des cas. Les radiographies des deux genoux montraient un angle de sulcus accru de 143 %. Cependant, aucune progression de l'arthrose n'a pu être relevée dans les articulations fémoro-patellaires opérées. Une hémarthrose post-opératoire précoce, nécessitant une révision, a été constatée dans un grand nombre de cas. Intérêt clinique: Vu les résultats sur les malades ayant souffert d'un syndrome d'hyperpression rotulienne sans arthrose patello-fémorale et les malades souffrant d'une luxation ou subluxation récidivante de la rotule, ces patients sont de bons candidats pour une section endoscopique de l'aileron rotulien externe et éventuellement pour capsulorhaphie interne. Dans une population relativement jeune la section endoscopique de l'aileron externe est une technique chirur-gicale relativement simple qui peut néanmoins être suivie par une technique “ouverte” en cas de défaillance de la première procédure.
    Notes: Summary Based on the results of 70 patients with mild lateral tracking and lateral compression of the patella, intact (22 patients) or defective (20 patients) cartilage of the patellofemoral joint, and recurrent patellofemoral dislocation (28 patients) we present the technique, results, complications and indications for the lateral retinacular release and medial imbrication of the vastus medialis obliquus. The average age of the patients was 26.2 years (range 9–54). At time of follow-up (m = 64 months) the patients were examined clinically as well as radiologically. The results were evaluated according to a Crosby and Insall score. 77% of the patients with mild lateral tracking and lateral compression (lateral release) were satisfied with the operative result (visual analog scale), as well as 68% of the patients with recurrent patellofemoral dislocation (lateral release and medial imbrication). Only 45% of the patients with patellofemoral arthritis (lateral release) reported an improvement in their condition after this procedure. The Crosby and Insall score showed significant improvement but did not show any difference between the 3 groups. 13% of the patients showed an abnormal lateral tracking of the patella in active motion. The passive patellar glide test showed patellar hypermobility to the lateral side in 37% of the cases and to the medial side in 80%. X-rays of both knees showed a sulcus angle of 143°. No progression in osteoarthritis in the operated patellofemoral joint was found. Hemarthrosis complicated a high number of cases in the early postoperative period, and in 3 cases an open revision was necessary. Clinical relevance: According to our results patients with patellar compression syndrome without patellofemoral arthrosis and patients with recurrent dislocation or subluxation of the patella are good candidates for endoscopic lateral release and medial imbrication of the medial vastus obliquus. In a young population endoscopic lateral release is a relatively simple surgical procedure making an open technique in failed cases possible later on.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of orthopaedic surgery & traumatology 8 (1998), S. 61-64 
    ISSN: 1432-1068
    Keywords: ACL rupture ; Arthrotomy ; Meniscectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A group of 94 male and 12 female patients who all suffered from ACL ruptures had a follow-up examination after a period of 14 to 21 years (m = 17.2 years). Each of them had undergone a primary arthrotomy with total or partial meniscectomy. In none of the cases, however, had operative repair of the ACL rupture been performed. The most frequent concomitant injury was a torn medial meniscus which occurred in 74.5% of the cases whereas a damaged lateral meniscus was found in 17.0% of the cases only. Chondromalacia of tibia, femur or patella was observed in 42.5% of the cases. Over 60% of the patients resumed their former sports activities, although in nearly 30% of these cases at a lower level whereas one third of the patients had to practice some other sport or were even forced to give up sports completely. 61.3% still complained about instability of the knee joint, 73.6% of the patients with partial or total meniscectomy had developed osteoarthritis of grade III and IV.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Der Orthopäde 29 (2000), S. 449-456 
    ISSN: 1433-0431
    Keywords: Schlüsselwörter Hüftkopfnekrose • Hüftendoprothese • Druckscheibenprothese ; Key words Osteonecrosis • Femoral head • Arthroplasty • Thrust plate prosthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In literature, the results of hip arthroplasty in patients with avascular osteonecrosis of the femoral head vary. The main reason may be the nonhomogeneous patient groups concerning etiology of the femoral head necrosis (FHN). Analyzing the results of hip endoprosthesis in relation to the etiology of FHN leads to the assumption that steroid-induced FHN and FHN with underlying systemic bone diseases (renal osteodystrophy, sickle-cell hemoglobinopathy) have the highest loosening rates. Diseases with immunosuppressive medication and sickle-cell hemoglobinopathy have the highest risk of joint infection. Therefore etiology plays an important role in the long-term results of hip endoprostheses in FHN. Modern cement techniques of the second generation and new non-cemented total hip endoprostheses seem to have better results than older prostheses and cement techniques. We followed-up 52 non-cemented thrust plate prostheses in 45 patients with FHN, prospectively, for at least 2 years (3.7 ± 1.6 years). The revision rate was 9.6 % (two aseptic loosenings in one patient with renal osteodystrophy and one patient with alcohol abuse, as well as three late infections in one patient with alcohol abuse and two patients with renal osteodystrophy). Additionally, five prostheses showed radiologic lines of a minimum of 2 mm. Future studies with longer follow-up are needed to find out whether these prosthetic designs with proximal fixation of the femoral component preserving the diaphysial bone have advantages in young FHN patients.
    Notes: Zusammenfassung In der Literatur finden sich sehr unterschiedliche Komplikations- und Lockerungsraten von Hüftendoprothesen bei Patienten mit Hüftkopfnekrose (HKN). Diese Schwankungen sind v. a. durch die inhomogene Zusammensetzung der Patientengruppen hinsichtlich der Ätiologie der Hüftkopfnekrose bedingt. Untersucht man die Ergebnisse der Hüftendoprothesen für die verschiedenen HKN-Ätiologien gesondert, so kristallisiert sich eine höhere Lockerungsrate bei steroidinduzierten Hüftkopfnekrosen und bei Hüftkopfnekrosen mit einer biologischen und biomechanischen Knochenalteration (z. B. der renalen Osteopathie oder der Sichelzellanämie) heraus. Grunderkrankungen, die einer Immunsuppression bedürfen und die Sichelzellanämie weisen höhere Infektionsraten von Hüftprothesen auf. Somit spielt die Ätiologie der Hüftkopfnekrose eine entscheidende Rolle für Langzeitergebnisse von Hüftendoprothesen. Moderne Zementiertechniken der 2. Generation und zementlose Hüfttotalendoprothesen scheinen bessere Ergebnisse zu liefern als früher verwendete Prothesenmodelle bzw. Zementiertechniken. In einer prospektiven Studie konnten wir bisher 52 Druckscheibenprothesen bei 45 Patienten mit Hüftkopfnekrosen und einem Mindestnachuntersuchungszeitraum von 2 (3,7 ± 1,6) Jahren postoperativ verfolgen. Es ergab sich eine Versagerquote von 9,6 % (je eine aseptische Lockerung bei renaler Osteopathie und Alkoholismus sowie 3 Infektionen bei Alkoholismus und renaler Osteopathie). Zusätzlich zeigten 5 Prothesen (9,6 %) Röntgensäume von mindestens 2 mm Breite. Inwieweit dieses Prothesenmodell mit metaphysärer Fixierung gegenüber den herkömmlichen Stielprothesen bei den jungen Hüftkopfnekrosepatienten Vorteile erbringen, müssen zukünftige Studien mit längeren Beobachtungszeiten zeigen.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 20 (1941), S. 247-249 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Bei einer Thalliumvergiftung, bei der neben einer schweren toxischen Nervenschädigung im Sinne einer Polyneuritis Störungen des 10. Hirnnerven (Heiserkeit und Schluckstörungen) bestehen, werden Ekg.-Veränderungen beschrieben, die auf eine Schädigung des Nervus vagus durch Thallium zurückgeführt werden.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In beagle dogs, the alterations of intraosseous pressure and blood supply in the femoral head that result from the administration of vasoactive substances were examined, and the changes were documented by magnetic resonance imaging (MRI). Vasoactive substances were infused into the medial and lateral circumflex femoral arteries of 12 beagle dogs. All infusions were done under standardised conditions with simultaneous measurements of venous blood flow and intraosseous pressure distribution in the proximal femur. The drugs were infused in three cycles of 30 min each separated by 30 min recovery periods, followed by MRI examination at the end of each experiment. At an intraosseous pressure of 14.3 (± 4.2) mm Hg in the femoral head epiphysis (I), 11.6 (± 2.7) mm Hg in the greater trochanter (II) and 9.3 (± 3.2) mm Hg in the femoral shaft (III), a baseline flow of 96.2 (± 18.8, n = 12) ml/min was measured in the femoral vein. After infusing bradykinin at a concentration of 10–6 moles, which is commonly known to lead to cerebral and subcutaneous oedema formation by vessel dilatation, the intraosseous pressure increased to (I): 49.1 (± 6.2) mm Hg, (II): 42.5 (± 5.8) mm Hg and (III): 38.3 (± 7.1) mm Hg in the three measured femoral areas (n = 3). After the bradykinin injection, femoral vein flow increased to a peak value of 238.4 (± 43.4) ml/min and then dropped to 62.3 (± 14.2) ml/min after discontinuation of the bradykinin infusion. In a second and third series of tests, hyperosmolar (20% NaCl) and hypoosmolar (distilled water) solutions were applied, also resulting in increased but lower mean intraosseous pressure values (17.3 ± 4.1 and 25.7 ± 5.1 ml/min, respectively) in all regions. When administering bradykinin, MRI scans taken immediately after completion of the experiment showed substantial oedema in the femoral muscular system, but without any changes of osseous signals in T1- or short time inversion recovery (STIR)-weighted images, nor did any changes occur when solutions of 20% NaCl or distilled H2O were injected. The results of our experiments demonstrate that acute increases of intraosseous pressure do not cause MRI signal alterations. We therefore conclude that in addition to the described pressure increase, other intraosseous alterations must occur to lead to the detectable signal changes found among patients with diagnosed femoral head necrosis. Finally, the short time period between the rise in intraosseous pressure and performing a conventional MRI may be one reason for missing the development of an intraosseous oedema. On the other hand, conventional MRI might have additional disadvantages for detecting intraosseous fluid compared with a dynamic imaging modality.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Archives of orthopaedic and trauma surgery 114 (1995), S. 298-301 
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 45-year-old woman who suffered from juvenile tuberculous coxitis at the age of 4 is presented. Her hip joint replacement lasted for 18 years and then needed replacing. Intraoperatively removed caseous soft tissue and an opalescent secretion histologically resembled a tuberculous focus, and bacteriological culture grew a Mycobacterium tuberculosis strain. Four months after the replacement, the patient suffered from a tuberculosis-induced septic loosening of the newly replaced hip joint endoprosthesis. The tuberculosis relapse was probably due to aseptic loosening of the first hip joint endoprosthesis.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Archives of orthopaedic and trauma surgery 116 (1996), S. 46-49 
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In this study 17 patients with recurrent dislocation of the patella were followed up 10 years after their Goldthwait operation. The subjective and clinical findings were excellent or good in 70%. X-radiographs indicated osteoarthritis of the femoropatellar joint in 60%. Concerning the aetiopathological factors, we found an increased external torsion of the afflicted extremity (measured by computed tomography).
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Archives of orthopaedic and trauma surgery 116 (1997), S. 46-49 
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In this study 17 patients with recurrent dislocation of the patella were followed up 10 years after their Goldthwait operation. The subjective and clinical findings were excellent or good in 70%. X-radiographs indicated osteoarthritis of the femoropatellar joint in 60%. Concerning the aetiopathological factors, we found an increased external torsion of the afflicted extremity (measured by computed tomography).
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Archives of orthopaedic and trauma surgery 116 (1997), S. 151-156 
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This prospective study included 43 patients undergoing renal transplantations. Magnetic resonance imaging (MRI) and X-rays of the hip joints were produced 3 and 12 months after transplantation. In 6 hip joints of 4 patients (9.3%), we discovered femoral head necroses just 3 months after transplantation. Three of the hip joints affected were symptomatic and 3 painless. The MR images taken 12 months after transplantation revealed no additional femoral head necrosis. A core decompression was performed on 3 joints. In contrast to those with core decompression, the femoral heads without core decompression showed a progression of the necrosis in 2 of 3 cases. All 4 patients with femoral head necroses were younger than 50 years and exhibited a premature conversion of the haematopoietic marrow to fatty marrow in the area of the proximal femoral metaphysis. A similar premature conversion to fatty marrow was seen in 6 of the 22 (27.2%) patients younger than 50 years and without femoral head necroses. The doses in long-term steroid medication and the steroid doses during the rejection periods of the patients with femoral head necroses were not significantly higher than those for the patients with premature conversion to fatty marrow. The latter had also not received significantly higher doses than the patients whose MRI findings were inconspicuous.
    Type of Medium: Electronic Resource
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