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  • 11
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the favoured core-accretion model of formation of planetary systems, solid planetesimals accumulate to build up planetary cores, which then accrete nebular gas if they are sufficiently massive. Around M-dwarf stars (the most common stars in our Galaxy), this model favours the formation of ...
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Knee surgery, sports traumatology, arthroscopy 5 (1997), S. 66-71 
    ISSN: 1433-7347
    Keywords: Key words Anterior cruciate ; ligament ; Isolated partial rupture ; Knee laxity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Sports Science
    Notes: Abstract The majority of previous studies on partial ruptures of the anterior cruciate ligament (ACL) include a relatively large proportion of knees with associated intra-articular injury or collateral ligament tear that contributes to an increase in the symptoms of instability and further deterioration of knee function. In the present study only patients with isolated, partial ruptures of the ACL were evaluated. Fifty-six patients with one injured knee were examined after a median of 5.3 (range 2.0–12.7) years using the IKDC evaluation form, Lysholm knee function score and Tegner activity score. Of the 56 knees, 6 underwent autologous reconstruction due to early progression to complete rupture. Of 34 knees evaluated for laxity, 25 had a negative Lachman test and 7 a positive (+) Lachman. In 2 knees a Lachman ++ result and a positive pivot shift were found. With instrumented laxity testing 24 knees had 2 mm or less difference in laxity compared with the contralateral uninjured knee. The largest side-to-side difference in knee laxity was 4.5 mm. Lysholm score was median 86 (range 52–100) points, and 62% had good or excellent knee function. A significant decline in activity was seen. Only 10 patients (30%) resumed their preinjury activities. We find that the majority of patients with an isolated, partial rupture of the ACL have an acceptable knee function and a stable knee after a median 5 years follow-up. There is, however, a marked reduction in activity.
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Springer
    Knee surgery, sports traumatology, arthroscopy 7 (1999), S. 118-124 
    ISSN: 1433-7347
    Keywords: Key words Shoulder ; Instability ; Bankart repair ; Arthroscopy ; Dislocation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Sports Science
    Notes: Abstract A total of 41 consecutive patients (11 women and 30 men, median age 29 (18–51) years) with unilateral, isolated, posttraumatic, recurrent anterior shoulder dislocation and a Bankart lesion were operatively repaired, either by an arthroscopic technique including a capsular plication, or by an open procedure with Mitec anchors. All the patients were followed prospectively and evaluated after a median of 36 (30–52) months follow-up by a “blind” observer. Nineteen patients in each group had excellent or good results, and one in each group was graded as fair. One patient in the arthroscopic group had a traumatic dislocation 5 months after the operation and was graded as poor. Three patients experienced subluxations postoperatively, one in the arthroscopic and two in the open group. There was no significant difference in anterior-posterior shoulder laxity measured objectively with Donjoy. The open Bankart repair group had a statistically significantly longer hospitalization (P = 0.001), a slight decrease in external range of motion, and more frequent cosmetic complaints. Apart from this, the results revealed no major differences between the two methods after a median of 36 months in this selected group of patients with longstanding problems.
    Type of Medium: Electronic Resource
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  • 14
    ISSN: 1433-7347
    Keywords: Key words Downhill skiing ; Epidemiology ; Health education ; Knee injuries
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Sports Science
    Notes: Abstract Despite various attempts at prevention, injury in downhill skiing continues to be a worrisome recreational problem. The purpose of this study was to test the effect of an instructional ski video on the behaviour and injuries of 763 downhill skiers. They were enrolled in two study groups, based on whether or not an instructional video had been shown in their bus on the way to a skiing resort. The video focussed on information regarding how to get started in downhill skiing and injury prevention. The outcome parameters, behaviour (binding test and adjustment), injury risk, type and consequence, were registered on the return trip 8 days later by a questionnaire. In the intervention group all outcome parameters changed significantly. The binding test was performed by 86% in the intervention group and by only 59% in the control group (P 〈 0.05). Adjustment of the bindings was done by 22% in the intervention group vs 14% in the control group. Regarding injury risk, 205 injuries were seen in 158 persons (20.7%) which is 26 injured skiers per 1000 skier-days and 33.6 injuries per 1000 skier-days. In the intervention group 16% of all skiers were injured vs 23% in the control group, yielding a reduction in injury risk of 30% (P 〈 0.05). Injuries caused by falls were seen in 12.6% in the intervention group vs 16.2% in the control group (P 〈 0.05). Injuries caused by collision were seen in 6% of the intervention group vs 12% in the control group (P 〈 0.05). The overall mean injury risk was 16 injuries per 1000 falls. Knee injuries made up 32.6% of the total. For inexperienced skiers the knee injury risk was significantly lower if the bindings had been tested (P 〈 0.05). Therefore, an instructional ski video can change the behaviour of downhill skiers and reduce the injury risk and consequences significantly.
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Springer
    Journal of orthopaedic science 3 (1998), S. 199-203 
    ISSN: 1436-2023
    Keywords: Key words: humerus ; fracture ; osteosynthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: In this retrospective study 48 humeral shaft fractures in 48 patients were operated on using the Seidel interlocking nail. The length of follow-up ranged from 6 to 60 months (median, 26 months). The treatment of fractures was satisfactory with the Seidel nail, but we emphasize the importance of countersinking the tip of the nail into the humeral head to avoid impingement. In 5 of 12 patients with non-unions, the procedure failed, and we found that the distal locking seemed to be inadequate. Pathological fractures (i.e., those caused by metastatic tumors) were all efficiently treated with the Seidel nail.
    Type of Medium: Electronic Resource
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