To determine compartment-specific loading patterns during gait, quantified as joint reaction forces (JRF), of individuals with knee articular cartilage defects (ACD) compared to healthy controls.
Individuals with ACDs and healthy controls (HC) participated. Individuals with ACDs were divided into groups according to ACD location: PF (only a patellofemoral ACD), TF (only a tibiofemoral ACD), and MIX (both PF and TF ACDs). Participants underwent 3-dimensional gait analysis at self-selected speed. TF-JRF was calculated using inverse dynamics. PF-JRF was derived from estimated quadriceps force and knee flexion angle. Primary variables of interest were the PF- and TF-JRF peaks (body weight [xBW]). Related secondary variables (gait speed, quadriceps strength, knee function, activity level) were evaluated as covariates.
1st peak PF-JRF and TF-JRF were similar in the TF and MIX groups (0.75-1.0xBW, p=.6-.9). Both peaks were also similar in the PF and HC groups (1.1-1.3xBW, p=.7-.8), and higher than the TF and MIX groups (p=.004-.02). For the 2(nd) peak PF-JRF, only the HC group was higher than the TF group (p=.02). The PF group walked at a similar speed as the HC group; both groups walked faster than the TF and MIX groups (p<0.001). With gait speed and quadriceps strength as covariates, no differences were observed in JRF peaks.
The results suggest the presence of a TF ACD (TF and MIX groups), but not a PF ACD (PF group), may affect joint loading patterns during walking. Walking slower may be a protective gait modification to reduce load.
This research output has an Altmetric Attention Score of 7. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 25 February 2017.
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#6,679,896
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#14
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