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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Skeletal radiology 26 (1997), S. 509-516 
    ISSN: 1432-2161
    Keywords: Key words Avascular osteonecrosis ; Femoral head ; Acetabulum ; MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. To investigate the possible occurrence of osteonecrosis in the acetabulum in patients with non-traumatic necrosis of the femoral head. Design and patients. One hundred and seventy-nine patients with non-traumatic femoral head necrosis were assessed by MRI and radiography for the presence of acetabular necrosis. Three criteria were established to differentiate between osteonecrosis and osteoarthritic changes: (1) heterogeneous morphology and irregular contours of the lesion; (2) typical demarcation lines of osteonecrosis; (3) deficient accumulation of intravenous gadolinium in the affected regions. Results. In four patients histological confirmation of acetabular necrosis was obtained. The MR analysis of 22 acetabula (9.5% of those examined) showed changes which suggested osteonecrosis. No cystic lesions were demonstrated in the subchondral bone of any patient. Two cases of acetabular necrosis were found without an ipsilateral femoral head necrosis. In two patients of the 14 who had undergone total hip replacement following necrosis of the femoral head, aseptic loosening of the acetabular component was found. Conclusion. The study suggests that acetabular necrosis may be an accompaniment to aseptic necrosis of the femoral head. Further work is required to assess its importance in premature loosening of the acetabular element of total hip arthroplasty.
    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
    Library Location Call Number Volume/Issue/Year Availability
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