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The aim of this study is to present the basic reference data of age and specific gait parameters for comparisons of the gait characteristics depended on amputation length of the Unilateral Trans-Tibial Prostheses. The basic gait parameters were extracted from 10 Adult, and 20 below knee(B/K) patients, 50 to 60 years of age using VICON 512 Motion Analyzer. The results were as follows; 1. The mean Cadence of the above knee(A/K) patients and below knee(B/K) patients were 87.77{pm}8.64 steps/min, to 99.84{pm}11.14 steps/min.(p<0.05) 2. The mean Walking Speed of the above knee(A/K) patients and below knee(B/K) patients were 0.84{pm}0.15 m/s, to 0.96{pm}0.25 m/s.(p>0.05) 3. The mean Stride Length of the above knee(A/K) patients and below knee(B/K) patients were 1.14{pm}0.14;m, to 1.14{pm}0.22m.(p>0.05) 4. The mean maximal angles of joint on the hip flexion motion for different above knee(A/K) patients and below knee(B/K) patients were 34.75{pm}10.18_{circ}, to 32.32{pm}6.34_{circ}.(p>0.05) 5. The mean maximal angles of joint on the knee flexion motion for different above knee(A/K) patients and below knee(B/K) patients were 66.97{pm}15.08_{circ}, to 52.65{pm}9.21_{circ}. (p<0.05) 6. The mean maximal angles of joint on the ankle dorsi-flexion motion for different above knee(A/K) patients and below knee(B/K) patients were 14.41{pm}4.82_{circ}, to 10.04{pm}3.49_{circ}.(p>0.05) 7. The mean maximal angles of joint on the ankle plantar-flexion motion for different above knee(A/K) patients and below knee(B/K) patients were 5.77{pm}3.17_{circ}, to 2.75{pm}4.49_{circ}.(p>0.05)
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