کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6207869 1265666 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Principal component analysis of knee kinematics and kinetics after anterior cruciate ligament reconstruction
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Principal component analysis of knee kinematics and kinetics after anterior cruciate ligament reconstruction
چکیده انگلیسی

This study compared the gait of 10 subjects with unilateral anterior cruciate ligament (ACL) reconstruction to a group of 12 height- and weight-matched control subjects. The analysis was based on knee flexion, adduction, and internal rotation angles and moments. The objective was to use principal component analysis (PCA) to identify knees of the ACL reconstructed subjects that fell outside normal ranges as determined by control subjects. Gait data were collected on all subjects in a motion analysis laboratory. Principal component (PC) models were developed for each gait measure based on the control subjects' data and used to assess gait waveforms of ACL reconstructed subjects. PCA allows analysis of entire gait waveforms for comparisons. In a sample of 10 ACL reconstructed subjects (7 years after surgery, on average), six of the ACL reconstructed knees had not returned to normal following surgery and eight of the contralateral knees functioned differently from controls. A majority of the differences were noted to occur in the abduction-adduction knee moment with corresponding infrequency in the differences seen in abduction-adduction rotation. PCA enabled us to identify subjects with abnormal gait waveforms as outliers relative to the normal control group.

► We identify knees of ACL reconstructed subjects that fall outside normal ranges. ► Principal component models were developed for dynamic gait measures. ► These models were used to assess gait waveforms of ACL reconstructed subjects. ► The majority of differences occurred in the abduction-adduction knee moment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gait & Posture - Volume 36, Issue 3, July 2012, Pages 609-613
نویسندگان
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