**4.4 Comparsion of angular changes in ankle joint in sagittal plane**

The 1st and 2nd examinations revealed that the position of the ankle joints was correct at the stance phase, while no plantar flexion of the joints occurred during the preswing period (Fig. 6).

Gait Analysis in Patients with Gonarthrosis Treated by Total Knee Arthroplasty (TKA) 55

The table below presents a comparison of the average values of time and space parameters obtained before and after the endoprosthetic replacement for the control

> not operated knee

sides: operated knee – knee before and after arthroplasty; not operated knee – healthy knee

Table 2. Comparing temporary-spatial values at patients before and after the arthroplasty

On the basis of the analysis of the time and space parameters it can be noticed that patients move with a reduced frequency of steps and at a slower rate. Thus, the double support phase and cycle duration are longer for them; similarly, the stance phase ends

Time and space parameters were also compared between the operated and unoperated side

Statistical analysis also revealed a significant difference between the operated and unoperated side for the Foot Off parameter in the 1st and 2nd examination. No statistically significant differences between the analyzed parameters were found in the 2nd

Foot Off [%] 68,3 70,7 68,0 68,5 62,8

DS [s] 0,6 0,6 0,5 0,5 0,3 SS [s] 0,4 0,4 0,4 0,5 0,4 StrL [m] 0,8 0,8 0,9 0,9 1,3 StrT [s] 1,5 1,5 1,4 1,4 1,0 WS [m/s] 0,6 0,6 0,7 0,7 1,2

I examination II examinaton control group operated

not operated knee

operated knee

87,0 86,7 88,8 87,9 112,0

**4.6 Analysis of spatio-temporal parametres** 

**Cadence** – number of steps within the minute

The following parameters were measured for all perosns:

knee

group.(Tab.2)

**DS** – double support

**SS** – single support **StrL** – stride lenght **StrT –** stride time **WS –** walking speed

> spatio-temporal parametres

> > Cadence [steps/min]

with results of the control group

in the 1st and 2nd examination. Tables 3 & 4.

later.

examination.

**Foot Off** – end of stance phase

Plan – plantar flexion, Dors – dorsal flexion

Fig. 6. Angular changes in the ankle joints in the transversal plane

### **4.5 Comparsion of angular changes in hip joint in sagittal plane**

Flexion contracture of the hip joints was marked on both sides in the 1st and 2nd examination. It was slightly reduced after the procedure (Fig. 7).

Ext – extension, Flex – flexion

Fig. 7. Angular changes in the hip joints in the transversal plane
