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  • Artikel: DFG Deutsche Nationallizenzen  (4)
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  • Artikel: DFG Deutsche Nationallizenzen  (4)
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  • 1
    Digitale Medien
    Digitale Medien
    Asymptomatic hypoechoic regions on patellar tendon ultrasound: A 4-year clinical and ultrasound followup of 46 tendons (2001)
    Copenhagen : Munksgaard International Publishers
    Scandinavian journal of medicine & science in sports 11 (2001), S. 0 
    Details
    ISSN: 1600-0838
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Sportwissenschaft
    Notizen: Patellar tendon ultrasound appearance is commonly used in clinical practice to diagnose patellar tendinopathy and guide management. Using a longitudinal study design we examined whether or not the presence of a hypoechoic ultrasonographic lesion in an asymptomatic patellar tendon conferred a risk for developing jumper’s knee compared with a tendon that was ultrasonographically normal. Ultrasonographic, symptomatic and anthropometric assessment was completed at baseline and followup. Magnetic resonance imaging was performed on four tendons that resolved ultrasonographically in the study period. Forty-six patellar tendons were followed over 47±11.8 months. Eighteen tendons were hypoechoic at baseline and 28 were ultrasonographically normal. Five tendons resolved ultrasonographically in the study period. Magnetic resonance imaging in four of these tendons was normal. Seven normal patellar tendons at baseline developed a hypoechoic area but only two became symptomatic. Analysis of ultrasonography at baseline and clinical outcome with Fisher’s exact test shows there is no association between baseline ultrasound changes and symptoms at followup. In this study there is no statistically significant relationship between ultrasonographic patellar tendon abnormalities and clinical outcome in elite male athletes. Management of jumper’s knee should not be solely based on ultrasonographic appearance; clinical assessment remains the cornerstone of appropriate management.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1034/j.1600-0838.2001.110602.x
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  • 2
    Digitale Medien
    Digitale Medien
    Patellar tendinopathy in junior basketball players: a controlled clinical and ultrasonographic study of 268 patellar tendons in players aged 14–18 years (2000)
    Copenhagen : Munksgaard International Publishers
    Scandinavian journal of medicine & science in sports 10 (2000), S. 0 
    Details
    ISSN: 1600-0838
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Sportwissenschaft
    Notizen: Anterior knee pain is a common presenting complaint amongst adolescent athletes. We hypothesised that patellar tendinopathy may occur at a younger age than is generally recognised. Thus, we studied the patellar tendons in 134 elite 14- to 18-year-old female (n=64) and male (n=70) basketball players and 29 control swimmers (17 female, 12 male) clinically and with ultrasonography. We found that of 268 tendons, 19 (7%) had current patellar tendinopathy on clinical grounds (11% in males, 2% in females). Twenty-six percent of the basketball players’ patellar tendons contained an ultrasonographic hypoechoic region. Ultrasonographic abnormality was more prevalent in the oldest tertile of players (17–18 years) than the youngest tertile (14–15.9 years). Of tendons categorised clinically as ‘Never patellar tendinopathy’, 22% had an ultrasonographic hypoechoic region nevertheless. This study indicates that patellar tendinopathy can occur in 14- to 18-year-old basketball players. Ultrasonographic tendon abnormality is 3 times as common as clinical symptoms.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1034/j.1600-0838.2000.010004216.x
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  • 3
    Digitale Medien
    Digitale Medien
    Studies of surgical outcome after patellar tendinopathy: clinical significance of methodological deficiencies and guidelines for future studies (2000)
    Copenhagen : Munksgaard International Publishers
    Scandinavian journal of medicine & science in sports 10 (2000), S. 0 
    Details
    ISSN: 1600-0838
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Sportwissenschaft
    Notizen: Patellar tendinopathy is often treated surgically after failure of conservative treatment but clinical experience suggests that results are not uniformly excellent. The aim of this review was to (i) identify the different surgical techniques that have been reported and compare their success rates, and (ii) critically assess the methodology of studies that have reported surgical outcomes. Twenty-three papers and two abstracts were included in the review. Surgical procedures were categorized and outcomes summarized. Using ten criteria, an overall methodology score was derived for each paper. Criteria for which scores were generally low (indicating methodological deficiency) concerned the type of study, subject selection process and outcome measures. We found a negative correlation between papers’ reported success rates and overall methodology scores (r=−0.57, P〈0.01). There was a positive correlation between year of publication and overall methodology score (r=0.68, P〈0.001). We conclude that study methodology may influence reported surgical outcome. We suggest practical guidelines for improving study design in this area of clinical research, as improved study design would provide clinicians with a more rigorous evidence-base for treating patients who have recalcitrant patellar tendinopathy.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1034/j.1600-0838.2000.010001002.x
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  • 4
    Digitale Medien
    Digitale Medien
    Benzaldehyde polymerization and copolymerization studies (1965)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 3 (1965), S. 3511-3517 
    Details
    ISSN: 0449-2951
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: In attempts to homopolymerize benzaldehyde with various ionic and coordination catalysts, or by γ-radiation, only the ionic catalyst BF3 etherate formed a polymeric product. This product was identified as polybenzyl with a degree of polymerization (DP) of 133. Mixtures of benzaldehyde and styrene did not copolymerize under γ-irradiation, but yielded only polystyrene. With a BF3 etherate catalyst, however, mixtures of styrene and benzaldehyde were found to have copolymerized through the carbonyl group of the latter, and a 50 : 50 styrene-benzaldehyde monomer mixture yielded an 80:20 styrene-benzaldehyde copolymer with a DP of 139.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pol.1965.100031015
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