Biomechanical changes in gait of subjects with medial knee osteoarthritis.
OBJECTIVE
Demonstrate the presence and magnitude of biomechanical variables during gait in patients with medial knee osteoarthritis (OA) and the relationship with the knee loading.


METHODS
Gait of 21 subjects diagnosed with medial knee OA was evaluated and compared to the control group.


RESULTS
THE GROUP WITH OA SHOWED: Lower gait speed (0.8 ± 0.1 vs. 1.1 ± 0.1m/s), higher peak early (2.6 ± 1.2 vs. 0.3 ± 1.4 Nm/Kg) and late peak of the adduction moment (1.8 ± 0.7 vs. 0.9 ± 0.2 Nm/Kg), higher peak flexor moment (1.6 ± 0.9 vs. 0.6 ± 0.4 Nm/Kg), high dynamic peak varus (11.5º ± 8.3 vs. 3º ± 3.9), higher peak flexion (15.6º ± 8 vs. 9.3º to ± 4.1), with a flexion tendency (5.5º ± 8.5) in the stance phase, smaller peak of flexion (58.7º ± 13.3 vs. 67.5º ± 4.8) in the balance phase and higher peaks of external rotation (25.5º ± 12.7 vs. 0.5º ± 22.4).


CONCLUSIONS
Patients with medial knee OA show changes in gait with increased external rotation, speed reduction, increased flexor moment and flexion in the stance phase, insufficient for reduction of the load. Level of Evidence III, Case Control Study.
Faculty of Medical Sciences of the Universidade Estadual de Campinas (FM UNICAMP) - Campinas, SP, Brazil.
Hésojy Gley Pereira Vital
HG
da Silva
Faculty of Medical Sciences of the Universidade Estadual de Campinas (FM UNICAMP) - Campinas, SP, Brazil.
Alberto
A
Cliquet Junior
Faculty of Medical Sciences of the Universidade Estadual de Campinas (FM UNICAMP) - Campinas, SP, Brazil.
Alessandro Rozim
AR
Zorzi
Faculty of Medical Sciences of the Universidade Estadual de Campinas (FM UNICAMP) - Campinas, SP, Brazil.
João
J
Batista de Miranda
Biomechanics; Gait; Knee