Clinical significance and effects on hip loading by increasi
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Researchers hypothesized that patients who increase gait speed mainly by increasing cadence would have lesser hip pain, a higher physical function, and a lower rate of increase in hip moments with increasing gait speed. Changes in gait speed are required in various situations and can be achieved by changing stride length, cadence, or both. The purpose of this study was to determine the effects of strategies for increasing gait speed on hip pain, physical function, and changes in hip loading during gait in patients with hip osteoarthritis (OA).

The study included 47 patients with secondary hip OA (average age 48.3 11.0 years). At self-selected regular and quick gait speeds, gait pace, stride length, cadence, and peak and impulse of the hip moments were all calculated during gait. According to whether they used changes in stride length and/or cadence to transition from regular to quick gait, the patients were graded as types S (with primarily rising stride length, n = 11), C (with primarily increasing cadence, n = 23), and SC (with increasing stride length and cadence, n = 13). The types were compared in terms of hip pain, physical activity, and hip moment changes during gait.

Results:
--The physical function was higher in types C (38.0 ± 8.8) and SC (40.6 ± 8.5) than in type S (28.2 ± 7.8), even after adjustment for age and minimum joint space width.

--Hip pain was not significantly different between types. The robustness of these results was confirmed with sensitivity analysis.

--The rates of increase in peak external hip adduction and internal rotation moments were lower in type C than in type SC.

Finally, during quick gait, Type C continued to suppress the rise in hip moments. Types C and SC, which had a higher cadence, had higher levels of physical function than type S. In patients with hip OA, encouraging the use of a cadence-increasing technique can be beneficial for reducing hip loading and retaining physical function.

Source: https://arthritis-research.biomedcentral.com/articles/10.1186/s13075-021-02514-x
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