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Titolo:
Bilateral Q angle asymmetry and anterior knee pain syndrome
Autore:
Livingston, LA; Mandigo, JL;
Indirizzi:
Wilfriddaaurier Univ, Dept Kinesiol & Phys Educ, Waterloo, ON N2L 3C5, Cana Wilfrid Laurier Univ Waterloo ON Canada N2L 3C5 aterloo, ON N2L 3C5, Cana
Titolo Testata:
CLINICAL BIOMECHANICS
fascicolo: 1, volume: 14, anno: 1999,
pagine: 7 - 13
SICI:
0268-0033(199901)14:1<7:BQAAAA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
PATELLOFEMORAL JOINT; QUADRICEPS ANGLE; CHONDROMALACIA PATELLAE; MALALIGNMENT; CONTRACTION; PREDICTORS; MECHANICS; INJURIES; WALKING; MOTION;
Keywords:
Q angle; bilateral asymmetry; anterior knee pain;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Livingston, LA WilfridNLaurier Univ, Dept Kinesiol & Phys Educ, 75 Univ Ave W, Waterloo, O Wilfrid Laurier Univ 75 Univ Ave W Waterloo ON Canada N2L 3C5
Citazione:
L.A. Livingston e J.L. Mandigo, "Bilateral Q angle asymmetry and anterior knee pain syndrome", CLIN BIOMEC, 14(1), 1999, pp. 7-13

Abstract

Objective. To determine whether quadriceps (Q) angles were bilaterally symmetric in individuals asymptomatic vs symptomatic for anterior knee pain. Design. Cross-sectional study. Background. Previous attempts to link excessive Q angles to the occurrenceof knee pain have yielded equivocal results. Deriving unilateral rather than bilateral measures of the Q angle and thereafter analysing data using traditional between-group analysis-of-variance structural models may, however, play a role in obscuring the true nature of the Q angle-knee pain relationship. Methods. Left and right Q angles were goniometrically measured in 75 subjects (37 males, 38 females) while they adopted a static, standing position with quadriceps relaxed. The majority (n = 50) were asymptomatic, while the remainder were unilaterally (n = 11) or bilaterally (n = 14) symptomatic for anterior knee pain. A questionnaire was used to determine the extent and magnitude of pain experienced in each of the symptomatic subjects. Results. Significant right vs left lower limb differences in Q angles wereobserved by group (p < 0.001) and group by gender (p < 0.05). Mean values,however, did not always reflect the true variation of data within the sample. Forty-seven percent of the subjects studied demonstrated a minimum 4 degrees bilateral Q angle difference, while in 13 of 75 subjects, this difference ranged from 8 degrees to 12 degrees. Only a weak yet significant relationship between right and left Q angles (r = 0.53, p < 0.001) was noted. While there were no correlations between Q angle measures and the magnitude of discomfort experienced in unilateral knee pain sufferers, these relationships were weak yet significant in bilateral knee pain sufferers. Conclusion. Q angles are not bilaterally symmetric, with the magnitude anddirection of the observed asymmetry varying according to whether an individual is asymptomatic, unilaterally symptomatic, or bilaterally symptomatic for anterior knee pain.

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Documento generato il 30/09/20 alle ore 02:44:09