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Lower extremity kinematics in runners with patellofemoral pain during a prolonged run.
Med Sci Sports Exerc 2011; 43(4):693-700MS

Abstract

PURPOSE

Investigate lower extremity kinematics in runners with patellofemoral pain (PFP) syndrome during a prolonged run.

METHODS

For this study, 20 runners with PFP and 20 uninjured controls performed a prolonged run on a treadmill at a self-selected pace. The run ended based on HR, perceived exertion, or level of knee pain. Kinematic data were analyzed at the beginning and at the end of the run.

RESULTS

The PFP group demonstrated less peak knee flexion, peak hip adduction, eversion excursion, peak knee flexion velocity, peak hip adduction velocity, and peak hip internal rotation velocity compared with controls. A significant main effect for time indicated that increases in most kinematic variables occurred at the end of the run. Interestingly, five runners with PFP displayed atypical motions of knee valgus and eight displayed hip abduction during the first half of stance.

CONCLUSIONS

The PFP group as a whole displayed less overall motion compared with controls. This may be indicative of a strategy aimed at limiting lower extremity movement to reduce pain. However, increases in joint motion occurred at the end of the run where pain levels were greatest. Three distinct PFP subgroups were noted, and each demonstrated unique kinematic mechanisms that may be associated with PFP. In the knee valgus subgroup, increased knee valgus and decreased peak motions were noted in other joints. In the hip abduction subgroup, less knee flexion and motion overall was noted. In the subgroup that displayed typical first half patterns (knee and hip adduction), increased hip internal rotation and decreased knee internal rotation were observed. These results suggest that several different kinematic mechanisms related to PFP may exist.

Authors+Show Affiliations

Department of Physical Therapy, Indiana University, Indianapolis, IN, USA. tdierks@iupui.edu

Pub Type(s)

Comparative Study
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

20798656

Citation

Dierks, Tracy A., et al. "Lower Extremity Kinematics in Runners With Patellofemoral Pain During a Prolonged Run." Medicine and Science in Sports and Exercise, vol. 43, no. 4, 2011, pp. 693-700.
Dierks TA, Manal KT, Hamill J, et al. Lower extremity kinematics in runners with patellofemoral pain during a prolonged run. Med Sci Sports Exerc. 2011;43(4):693-700.
Dierks, T. A., Manal, K. T., Hamill, J., & Davis, I. (2011). Lower extremity kinematics in runners with patellofemoral pain during a prolonged run. Medicine and Science in Sports and Exercise, 43(4), pp. 693-700. doi:10.1249/MSS.0b013e3181f744f5.
Dierks TA, et al. Lower Extremity Kinematics in Runners With Patellofemoral Pain During a Prolonged Run. Med Sci Sports Exerc. 2011;43(4):693-700. PubMed PMID: 20798656.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Lower extremity kinematics in runners with patellofemoral pain during a prolonged run. AU - Dierks,Tracy A, AU - Manal,Kurt T, AU - Hamill,Joseph, AU - Davis,Irene, PY - 2010/8/28/entrez PY - 2010/8/28/pubmed PY - 2011/7/30/medline SP - 693 EP - 700 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 43 IS - 4 N2 - PURPOSE: Investigate lower extremity kinematics in runners with patellofemoral pain (PFP) syndrome during a prolonged run. METHODS: For this study, 20 runners with PFP and 20 uninjured controls performed a prolonged run on a treadmill at a self-selected pace. The run ended based on HR, perceived exertion, or level of knee pain. Kinematic data were analyzed at the beginning and at the end of the run. RESULTS: The PFP group demonstrated less peak knee flexion, peak hip adduction, eversion excursion, peak knee flexion velocity, peak hip adduction velocity, and peak hip internal rotation velocity compared with controls. A significant main effect for time indicated that increases in most kinematic variables occurred at the end of the run. Interestingly, five runners with PFP displayed atypical motions of knee valgus and eight displayed hip abduction during the first half of stance. CONCLUSIONS: The PFP group as a whole displayed less overall motion compared with controls. This may be indicative of a strategy aimed at limiting lower extremity movement to reduce pain. However, increases in joint motion occurred at the end of the run where pain levels were greatest. Three distinct PFP subgroups were noted, and each demonstrated unique kinematic mechanisms that may be associated with PFP. In the knee valgus subgroup, increased knee valgus and decreased peak motions were noted in other joints. In the hip abduction subgroup, less knee flexion and motion overall was noted. In the subgroup that displayed typical first half patterns (knee and hip adduction), increased hip internal rotation and decreased knee internal rotation were observed. These results suggest that several different kinematic mechanisms related to PFP may exist. SN - 1530-0315 UR - https://www.unboundmedicine.com/medline/citation/20798656/Lower_extremity_kinematics_in_runners_with_patellofemoral_pain_during_a_prolonged_run_ L2 - http://Insights.ovid.com/pubmed?pmid=20798656 DB - PRIME DP - Unbound Medicine ER -