Tibiofemoral joint-surface motions in weight-bearing and non-weight-bearing movement

John H. Hollman; Robert H. Deusinger; Linda R. Van Dillen; Dequan Zou; Scott D. Minor; Matthew J. Matava; Jack R. Engsberg

doi:10.1123/jsr.12.2.143

Tibiofemoral joint-surface motions in weight-bearing and non-weight-bearing movement

John H. Hollman, Robert H. Deusinger, Linda R. Van Dillen, Dequan Zou, Scott D. Minor, Matthew J. Matava, Jack R. Engsberg

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Context: Analyses of the path of instant center of rotation (PICR) can be used to infer joint-surface rolling and sliding motion (arthrokinematics). Previous PICR research has not quantified arthrokinematics during weight-bearing (WB) movement conditions or studied the association of muscle activity with arthrokinematics. Objective: To examine tibiofemoral arthrokinematics and thigh-muscle EMG during WB and non-weight-bearing (NWB) movement. Design: 2 × 9 repeated-measures experiment. Setting: Laboratory. Participants: 11 healthy adults (mean age 24 years). Main Outcome Measures: Tibiofemoral percentage rolling arthrokinematics and quadriceps: hamstring EMG activity. Results: WB percentage rolling (76.0% ± 4.7%) exceeded that of NWB (57.5% ± 1.8%) through terminal knee extension (F_8,80 = 8.99, P < .001). Quadriceps:hamstring EMG ratios accounted for 45.1% and 34.7% of the variance in arthrokinematics throughout the WB and NWB movement conditions, respectively (P < .001). Conclusions: More joint-surface rolling occurs through terminal knee extension during WB movement and is associated with an increase in hamstring activity.

Original language	English
Pages (from-to)	143-161
Number of pages	19
Journal	Journal of Sport Rehabilitation
Volume	12
Issue number	2
DOIs	https://doi.org/10.1123/jsr.12.2.143
State	Published - May 2003

Keywords

Arthrokinematics
Biomechanics
Instant center of rotation
Knee

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title = "Tibiofemoral joint-surface motions in weight-bearing and non-weight-bearing movement",

abstract = "Context: Analyses of the path of instant center of rotation (PICR) can be used to infer joint-surface rolling and sliding motion (arthrokinematics). Previous PICR research has not quantified arthrokinematics during weight-bearing (WB) movement conditions or studied the association of muscle activity with arthrokinematics. Objective: To examine tibiofemoral arthrokinematics and thigh-muscle EMG during WB and non-weight-bearing (NWB) movement. Design: 2 × 9 repeated-measures experiment. Setting: Laboratory. Participants: 11 healthy adults (mean age 24 years). Main Outcome Measures: Tibiofemoral percentage rolling arthrokinematics and quadriceps: hamstring EMG activity. Results: WB percentage rolling (76.0% ± 4.7%) exceeded that of NWB (57.5% ± 1.8%) through terminal knee extension (F8,80 = 8.99, P < .001). Quadriceps:hamstring EMG ratios accounted for 45.1% and 34.7% of the variance in arthrokinematics throughout the WB and NWB movement conditions, respectively (P < .001). Conclusions: More joint-surface rolling occurs through terminal knee extension during WB movement and is associated with an increase in hamstring activity.",

keywords = "Arthrokinematics, Biomechanics, Instant center of rotation, Knee",

author = "Hollman, {John H.} and Deusinger, {Robert H.} and {Van Dillen}, {Linda R.} and Dequan Zou and Minor, {Scott D.} and Matava, {Matthew J.} and Engsberg, {Jack R.}",

year = "2003",

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doi = "10.1123/jsr.12.2.143",

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AU - Hollman, John H.

AU - Deusinger, Robert H.

AU - Van Dillen, Linda R.

AU - Zou, Dequan

AU - Minor, Scott D.

AU - Matava, Matthew J.

AU - Engsberg, Jack R.

PY - 2003/5

Y1 - 2003/5

N2 - Context: Analyses of the path of instant center of rotation (PICR) can be used to infer joint-surface rolling and sliding motion (arthrokinematics). Previous PICR research has not quantified arthrokinematics during weight-bearing (WB) movement conditions or studied the association of muscle activity with arthrokinematics. Objective: To examine tibiofemoral arthrokinematics and thigh-muscle EMG during WB and non-weight-bearing (NWB) movement. Design: 2 × 9 repeated-measures experiment. Setting: Laboratory. Participants: 11 healthy adults (mean age 24 years). Main Outcome Measures: Tibiofemoral percentage rolling arthrokinematics and quadriceps: hamstring EMG activity. Results: WB percentage rolling (76.0% ± 4.7%) exceeded that of NWB (57.5% ± 1.8%) through terminal knee extension (F8,80 = 8.99, P < .001). Quadriceps:hamstring EMG ratios accounted for 45.1% and 34.7% of the variance in arthrokinematics throughout the WB and NWB movement conditions, respectively (P < .001). Conclusions: More joint-surface rolling occurs through terminal knee extension during WB movement and is associated with an increase in hamstring activity.

AB - Context: Analyses of the path of instant center of rotation (PICR) can be used to infer joint-surface rolling and sliding motion (arthrokinematics). Previous PICR research has not quantified arthrokinematics during weight-bearing (WB) movement conditions or studied the association of muscle activity with arthrokinematics. Objective: To examine tibiofemoral arthrokinematics and thigh-muscle EMG during WB and non-weight-bearing (NWB) movement. Design: 2 × 9 repeated-measures experiment. Setting: Laboratory. Participants: 11 healthy adults (mean age 24 years). Main Outcome Measures: Tibiofemoral percentage rolling arthrokinematics and quadriceps: hamstring EMG activity. Results: WB percentage rolling (76.0% ± 4.7%) exceeded that of NWB (57.5% ± 1.8%) through terminal knee extension (F8,80 = 8.99, P < .001). Quadriceps:hamstring EMG ratios accounted for 45.1% and 34.7% of the variance in arthrokinematics throughout the WB and NWB movement conditions, respectively (P < .001). Conclusions: More joint-surface rolling occurs through terminal knee extension during WB movement and is associated with an increase in hamstring activity.

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Tibiofemoral joint-surface motions in weight-bearing and non-weight-bearing movement

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