HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when Rapid Responses are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Powers, C. M Search for Related Content PubMed PubMed Citation Articles by Powers, C. M Related Collections Kinesiology/Biomechanics Injuries and Conditions: Knee Social Bookmarking                      What's this?

Patellar Kinematics, Part II: The Influence of the Depth of the Trochlear Groove in Subjects With and Without Patellofemoral Pain

CM Powers, PT, PhD, is Director, Musculoskeletal Biomechanics Research Laboratory, and Assistant Professor, Department of Biokinesiology and Physical Therapy, University of Southern California, 1540 E Alcazar St, CHP-155, Los Angeles, CA 90033 (USA) (powers{at}hsc.usc.edu)

Background and Purpose. A shallow intercondylar groove has been implicated as being contributory to abnormal patellar alignment. The purpose of this study was to assess the influence of the depth of the intercondylar groove on patellar kinematics. Subjects. Twenty-three women (mean age=26.8 years, SD=8.5, range=14–46) with a diagnosis of patellofemoral pain and 12 women (mean age=29.1 years, SD=5.0, range=24–38) without patellofemoral pain participated. Only female subjects were studied because of potential biomechanical differences between sexes. Methods. Patellar kinematics were assessed during resisted knee extension using kinematic magnetic resonance imaging. Measurements of medial and lateral patellar displacement and tilt were correlated with the depth of the trochlear groove (sulcus angle) at 45, 36, 27, 18, 9, and 0 degrees of knee flexion using regression analysis. Results. The depth of the trochlear groove was found to be correlated with patellar kinematics, with increased shallowness being predictive of lateral patellar tilt at 27, 18, 9, and 0 degrees of flexion and of lateral patellar displacement at 9 and 0 degrees of flexion (r=.51–.76). Conclusions and Discussion. The results of this study indicate that bony structure is an important determinant of patellar kinematics at end-range knee extension (0°–30°).

Key Words: Magnetic resonance imaging • Patellar kinematics • Patellofemoral joint

CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				S. R. Ward, M. R. Terk, and C. M. Powers Patella Alta: Association with Patellofemoral Alignment and Changes in Contact Area During Weight-Bearing J. Bone Joint Surg. Am., August 1, 2007; 89(8): 1749 - 1755. [Abstract] [Full Text] [PDF]

				R. S. Hinman and K. M. Crossley Patellofemoral joint osteoarthritis: an important subgroup of knee osteoarthritis Rheumatology, July 1, 2007; 46(7): 1057 - 1062. [Abstract] [Full Text] [PDF]

				C. M. Powers, S. R. Ward, Y.-j. Chen, L.-d. Chan, and M. R. Terk The Effect of Bracing on Patellofemoral Joint Stress During Free and Fast Walking Am. J. Sports Med., January 1, 2004; 32(1): 224 - 231. [Abstract] [Full Text]