Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Jan 1992
Aneurysmal bone cyst. A review of 52 primary and 16 secondary cases.
Authors report on the results of treatment of 52 primary and 16 secondary aneurysmal bone cysts (ABC). ABC grow rapidly; 84% of them have already destroyed more than the half of the bone width at recognition. En bloc resection is preferred when the ABC is growing superficially and eccentrically and more than half of the bone width is intact. ⋯ The 16 cases of secondary ABC were observed mostly in association with osteoblastomas, giant-cell tumors, and osteosarcomas. The incidence of the secondary ABC was 23% in the whole ABC group but not more than 2-4% among the osteosarcomas and giant-cell tumors. Secondary ABC may confuse the histological and clinical diagnoses and that, especially in cases of osteosarcoma, may have fatal consequences.
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Arch Orthop Trauma Surg · Jan 1992
Case ReportsIdiopathic acro-osteolysis in an elderly woman. A 10-year follow-up.
We report a case of idiopathic acro-osteolysis in an 80-year-old, otherwise normal woman. The patient first presented at the age of 70 years with a 3-year history of progressive shortening of the left toes. ⋯ Angiography was normal. During follow-up over 10 years the osteolysis gradually progressed and spread to affect the right toes.
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Arch Orthop Trauma Surg · Jan 1992
No physiologic age-related increase of circulating somatomedin-C during early stage of Perthes' disease: a longitudinal study in 21 boys.
Perthes' disease was originally viewed as a local ischaemic necrosis of the femoral head. Several authors, however, have presented data suggesting that children with this disease also suffer from a general disorder of skeletal maturation. Hormonal changes in the hypothalamus-pituitary-growth plate axis have been discussed as a possible underlying cause and contradictory results reported on the role of the somatomedins in this process. ⋯ The physiologic increase with age of plasma Sm-C levels in the control group was either absent or diminished in children with early-stage Perthes' disease (P less than 10(-6), signs test). The Sm-C values in affected children were low. Our data correlate well with reports from others of retarded skeletal maturation in children with Perthes' disease and support the hypothesis of an accompanying disorder of the synthesis or release of Sm-C/IGF-I or its binding proteins.
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Arch Orthop Trauma Surg · Jan 1992
The influence of metal backing in unicompartmental tibial component fixation. An in vivo roentgen stereophotogrammetric analysis of micromotion.
The fixation of the tibial component in 36 patients with conventionally cemented unicompartmental knee arthroplasties for femorotibial gonarthrosis was studied using roentgen stereophotogrammetric analysis (RSA). Twenty-four tibial components were all-polyethylene while 12 were metal-backed. The follow-up was for 6 years. ⋯ A strong correlation was found between the extension of the radiolucent line and the migration. Otherwise, neither demographic, clinical, nor radiographic data correlated with the RSA results. In this study metal backing did not have any influence on prosthetic fixation as measured by RSA.
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Arch Orthop Trauma Surg · Jan 1992
Case ReportsReconstruction of bony defects using the Ilizarov "bone transport" technique. A preliminary report.
Ilizarov's method of percutaneous transosseous osteosynthesis allows management of complex skeletal deformities using elastic external fixation, atraumatic corticotomy and gradual adaptations between bony fragments. One particular application, useful in the reconstruction of bony defects, is the "lift" or "bone transport" technique, in which in fact internal lengthening is carried out. Using some of their first cases as illustrations, the authors describe the technique and its potential problems.