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  • 1995-1999  (14)
  • 1
    Electronic Resource
    Electronic Resource
    Changing injury pattern of acute anterior cruciate ligament tears treated at Tampere University Hospital in the 1980s (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of medicine & science in sports 5 (1995), S. 0 
    Details
    ISSN: 1600-0838
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Sports Science
    Notes: During the years 1980–1989, 450 patients with an acute anterior cruciate ligament (ACL) rupture were treated at the University Hospital of Tampere, Finland. ACL ruptures were diagnosed by arthroscopy or open surgery. The data were analyzed in terms of patient age, sex, injury etiology, injury type and sports activity to determine the trends in the 1980s. The number of ACL tears seen in the Hospital increased by 247% over this period. Sixty-three percent of the patients were male (mean age 33 years) and 37% female (mean age 39 years), and there were no changes in the sex and age distribution in 1980s. The most common injury type was the isolated ACL rupture (51%), followed by a combination injury of the ACL and medial collateral ligament (38%). Isolated ACL ruptures in the 1980s increased 6.5 times. Sports accounted for 54% of all injuries with out any sign of change in their relative proportion in 1980s. The most common sports causing the rupture were soccer (29%), downhill skiing (20%), cross-country skiing (12%) and volleyball (12%). From 1980 to 1989, there was a decrease (2 times) in ACL injuries sustained in crosscountry skiing and a substantial (30 times) increase in ACL injuries sustained in downhill skiing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0838.1995.tb00020.x
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  • 2
    Electronic Resource
    Electronic Resource
    Survival of Lubinus straight (IP) and curved (SP) total hip prostheses in 543 patients after 4–13 years (1996)
    Springer
    Archives of orthopaedic and trauma surgery 116 (1996), S. 10-13 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The clinical outcome and survival of 543 total hip arthroplasties with Lubinus cemented total hip prostheses after a mean of 7.9 years are reported. Clinical evaluation revealed no significant differences between patients with a straight stem and those with a curved anatomic stem. Loosening was statistically associated with young age, male sex, heavy weight, diagnosis other than osteoarthritis and year of operation. Survivorship analysis of the Lubinus IP implant at 8 years revealed a 95% chance of survival. The survival of the SP implant was 96%. After this time point the curve for SP implants began to fall at a faster rate than that for IP implants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004020050059
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Stabilization of an inserted tricalcium phosphate spacer enhances the healing of a segmental tibial defect in sheep (1997)
    Springer
    Archives of orthopaedic and trauma surgery 116 (1997), S. 290-294 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effect of inserting a tricalcium phosphate (TCP) spacer stabilized by a rigid or non-rigid fixation technique on the healing of segmental tibial defects of critical size was established. The osteotomized tibiae, 11 with and 8 without TCP spacers, were fixed by an external circular device in 11 mature sheep and by plates in 8 mature sheep, respectively. Healing was evaluated roentgenographically 16 weeks after the operation. Compared with the defects without TCP spacers, enhanced stability and healing were observed in the defects with TCP spacers under an identical external fixation. Furthermore, a significantly higher incidence of healing was obtained with plate fixation than with external device fixation in the TCP-implanted defects (P 〈 0.04). An abundant bridging callus was roentgenograpically demonstrated in most of the healed defects, but none in the unhealed defects. The TCP spacer with its mechanical integrity enhances the stability of external fixation, and the stable immobilization provided by rigid fixation is essential for osteoconduction of an inserted TCP spacer in the healing of segmental diaphyseal defects in sheep.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00390056
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Healing of a tibial double osteotomy is modified by clodronate administration (1996)
    Springer
    Archives of orthopaedic and trauma surgery 115 (1996), S. 111-114 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We studied the healing of tibial double osteotomies in rats during clodronate administration 10 mg/kg daily subcutaneously for 6 weeks. Clodronate treatment did not inhibit the endochondral bone formation in callus or in the epiphyseal plate. The differentiation of osteoblasts into mature osteocytes was disturbed, and the bone structure around the osteocytes was not normal. In the clodronatetreated group, the amount of newly formed bone matrix seemed increased, but mineralization of the bone matrix was delayed. The bundle bone trabeculae in callus were not so spatially well organized as in the controls. No delay in the union of the bone segment by new bone was seen during clodronate administration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00573453
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Survival of Lubinus straight (IP) and curved (SP) total hip prostheses in 543 patients after 4–13 years (1997)
    Springer
    Archives of orthopaedic and trauma surgery 116 (1997), S. 10-13 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The clinical outcome and survival of 543 total hip arthroplasties with Lubinus cemented total hip prostheses after a mean of 7.9 years are reported. Clinical evaluation revealed no significant differences between patients with a straight stem and those with a curved anatomic stem. Loosening was statistically associated with young age, male sex, heavy weight, diagnosis other than osteoarthritis and year of operation. Survivorship analysis of the Lubinus IP implant at 8 years revealed a 95% chance of survival. The survival of the SP implant was 96%. After this time point the curve for SP implants began to fall at a faster rate than that for IP implants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00434092
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    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Stabilization of an inserted tricalcium phosphate spacer enhances the healing of a segmental tibial defect in sheep (1997)
    Springer
    Archives of orthopaedic and trauma surgery 116 (1997), S. 290-294 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effect of inserting a tricalcium phosphate (TCP) spacer stabilized by a rigid or non-rigid fixation technique on the healing of segmental tibial defects of critical size was established. The osteotomized tibiae, 11 with and 8 without TCP spacers, were fixed by an external circular device in 11 mature sheep and by plates in 8 mature sheep, respectively. Healing was evaluated roentgenographically 16 weeks after the operation. Compared with the defects without TCP spacers, enhanced stability and healing were observed in the defects with TCP spacers under an identical external fixation. Furthermore, a significantly higher incidence of healing was obtained with plate fixation than with external device fixation in the TCP-implanted defects (P 〈 0.04). An abundant bridging callus was roentgenograpically demonstrated in most of the healed defects, but none in the unhealed defects. The TCP spacer with its mechanical integrity enhances the stability of external fixation, and the stable immobilization provided by rigid fixation is essential for osteoconduction of an inserted TCP spacer in the healing of segmental diaphyseal defects in sheep.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00390056
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Femoral component fixation with and without intramedullary plug A 6-year follow-up (1996)
    Springer
    Archives of orthopaedic and trauma surgery 115 (1996), S. 276-279 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A total of 113 patients underwent a cemented total hip replacement (THR) operation involving femoral component fixation either without the use of a distal intramedullary plug (n = 57, group 1) or with the plug (n =56, group 2). We studied the femoral component fixation radiographically at on average 6 years after THR. The cement coating was assessed as technically good in 86% and 95% of groups 1 and 2, respectively. There was radiographically diagnosable loosening of the femoral component at the follow-up in 25 cases in which stems were inserted without the intramedullary plug, and in 6 cases in those with the plug (P 〈 0.0008), and the mean subsidence of the femoral component was 5 mm in group 1 and 1.5 mm (P 〈 0.0003) in group 2, respectively. Osteolytic changes around the femoral component were noticed in both groups in equal numbers and with no statistical difference. The use of a distal intramedullary plug in the cementation of the femoral stem results in a better cement coating, reduces femoral component subsidence and ameliorates the loosening rates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00439053
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  • 8
    Electronic Resource
    Electronic Resource
    Bioactive glass and glass-ceramic-coated hip endoprosthesis: experimental study in rabbit (1995)
    Springer
    Journal of materials science 6 (1995), S. 14-18 
    Details
    ISSN: 1573-4838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Co−Cr−Mo endoprostheses with a dual bioactive glass (BG) coating and titanium implants coated with a bioactive glass-ceramic (BGC) were studied under lead-bearing conditions in the rabbit hip. The dual BG coating contained an inner layer of high durability and an outer bioactive layer. Each type of coating improved the stabilization of prosthesis during the experiment period of 8 weeks compared to non-coated control implants. EDXA analysis confirmed the ability of BG and BGC coatings to bond chemically to bone. The BGC coating on titanium alloy proved superior to the dual BG coating on Co−Cr−Mo prosthesis with regard to bone formation on the surface of the implant. The bioactive top layer of the dual BG coating showed resorption, especially in the areas without direct bone contact. This is explained by partial crystallization of the glass during firing. Thermal discrepancy between BGC coating and titanium core caused cracking of the coating, which remains a major obstacle to its use as a bioactive coating.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00121240
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  • 9
    Electronic Resource
    Electronic Resource
    Bioactive double glass coatings for Co-Cr-Mo alloy (1995)
    Springer
    Journal of materials science 6 (1995), S. 242-247 
    Details
    ISSN: 1573-4838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Glass compositions for double coatings for a Co-Cr-Mo alloy were developed. The glass compositions were chosen to fulfil such requirements as matching thermal expansion, low glass transition temperature and moderate solubility. For the ground coat a fairly high durability is required, whereas the cover coat must be bioactive, i.e. become attached to living bone by a chemical bond. Two compositions of each type were developed by computer-aided optimization. The glasses were chosen in the Na2O−CaO−B2O3−Al2O3−SiO2−P2O5 system. The bioactivity was tested in vitro by immersion in a simulated body fluid. The double coatings on Co−Cr−Mo alloy released hexavalent chromium into the solution as detected by yellow colouration and spectrophotometry. This colouration was strong at the margin between coated and uncoated metal and may be explained by oxidation of trivalent chromium of the alloy in the presence of glass. The released chromium did not have any notable effect on the calcium phosphate formation. After replensihing the solution no coloration was observed. This suggests that the chromate is easily dissolved and that it may be possible to wash it out prior to implantation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00146863
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  • 10
    Electronic Resource
    Electronic Resource
    The use of a coral composite implant containing bone morphogenetic protein to repair a segmental tibial defect in sheep (1997)
    Springer
    International orthopaedics 21 (1997), S. 194-200 
    Details
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé. Nous avons étudié l’action d’un composite comprenant un cylindre de corail, une protéine morphogénétique xénogénique extraite de l’os de souris et du collagène de type IV, sur la consolidation la résistance mécanique et la réponse immune d’une perte de substance diaphysaire. L’étude au scanner à 6 semaines a montré une réduction significative du cal dans le groupe composite. A 16 semaines, la résistance à la torsion, la déformation angulaire maximale et la solidité des cals consolidés ont été respectivement de 113%, 117% et 120% dans le groupe controle, et de 67%, 92% et 79% dans le groupe composite, comparées au tibiai contralatéral. Dans le groupe composite, il y a eu une élévation significative des anticorps anti-mBMP. L’augmentation de la formation osseuse au stade précoce et la diminuation des propriétés mécaniques au stade tardif dans le groupe composite, pourraient être l’expression d’une induction séquentielle de l’ostéogenèse et d’une initiation immune des antigènes mBMP xénogéniques après une greffe hétérotopique.
    Notes: Summary. A composite implant consisting of a coral cylinder, moose bone morphogenetic protein and type IV collagen was used to repair a segmental tibial defect in sheep. Healing, related variance in mechanical strength and immune responses were evaluated. In comparison with a coral control, a larger amount of newly formed external callus was observed in the composite group at 6 weeks. The maximal torque capacity, maximal angular deformation at failure and bone stiffness of a healed osteotomised tibia recovered 113%, 117% and 120% in the coral controls and 67%, 92% and 79% in the composite implants against the corresponding contralateral tibia at 16 weeks respectively. A significantly elevated anti-BMP antibody was detectable in the composite group at 3 and 6 weeks. Augmented bone formation at an early stage and weakened torsional performance at a later stage in the composite implants may indicate the phase-specific osteoinduction and the immune response of xenogenic BMP with time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002640050149
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    Paper (German National Licenses)
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