## 3 Results
### Inside Materials Used in Various Regions
\begin{tabular}{c c c c c c c} \hline \hline  & **Clinical Finding (Reference)** & **EVA** & **Poron** & **Plastazote** & **PU** & **PPT** & **Other** \\ \hline \(\bullet\) & Footwear provision for diabetic [57] & 1 & – & – & – & – & 2 \\ \(\bullet\) & Custom orthoses and footwear in diabetic [52] & 1 & – & – & – & – & 5 \\ \(\bullet\) & Cushioning insole in diabetic footwear [62] & – & 1 & 1 & 1 & – & – \\ \(\bullet\) & Total contact inside in diminishing foot pressures [54] & 1 & 1 & – & – & – & 1 \\ \(\bullet\) & Diabetic therapeutic footwear on preventing DFUs [64] & – & – & – & 1 & – & – \\ \(\bullet\) & Plantar pressure in three types of insole given to DM people [55] & 1 & – & – & – & 1 \\ \(\bullet\) & Plantar pressure in three types of insole given to DM people [55] & 1 & – & – & – & 1 \\ \(\bullet\) & \(\bullet\) & \(\bullet\) & \(\bullet\) & \(\bullet\) & \(\bullet\) & \(\bullet\) & \(\bullet\) \\ \hline \hline \end{tabular}   
* **Table 3**: The published paper discussed selected insole materials on the midfoot region. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multicolumn{2}{c}{**Clinical Finding (Reference)**} & **EVA** & **Poron** & **Plastazote** & **PU** & **PPT** & **Other** \\ \hline \(\bullet\) & Custom orthoses and footwear in diabetic [52] & 1 & – & – & – & – & 5 \\ \(\bullet\) & Cushioning inside in diabetic footwear [62] & – & 1 & 1 & 1 & – & – \\ \(\bullet\) & Total contact inside in diminishing foot pressures [54] & 1 & 1 & – & – & – & 1 \\ \(\bullet\) & Diabetic therapeutic footwear on preventing DFUs [64] & – & – & – & 1 & – & – \\ \(\bullet\) & Plantar pressure in three types of insole given to DM people [55] & 1 & – & – & 1 & – & – \\ \(\bullet\) & Insoles to prevent foot ulceration [66] & 1 & – & – & – & – & 1 \\ \(\bullet\) & Orthotic insoles for people with diabetes [59] & 1 & – & – & – & – & – \\ \(\bullet\) & Insoles offloading in the diabetic foot [65] & 1 & – & – & – & – & 3 \\ \(\bullet\) & Cushioned cast reduce foot loading in DM [53] & – & – & – & – & 2 \\ \(\bullet\) & Insole materials influence PPP in DM people [60] & – & – & 1 & – & – & 1 \\ \(\bullet\) & Custom insoles enhanced pressure relief [67] & 1 & 1 & – & – & – & - \\ \(\bullet\) & Insoles on plantar pressure distribution [48] & 1 & 1 & – & – & – & – \\ \(\bullet\) & Individual robotic insoles in diagnostic and clinical application [68] & – & – & – & – & – & 1 \\ \(\bullet\) & Wearing insoles in different densities [61] & 1 & – & – & – & – & – \\ \(\bullet\) & Different insoles for DM foot [49] & 1 & – & – & 1 & – & 1 \\ \(\bullet\) & Insoles effect for DM people [56] & 1 & – & 1 & – & 1 & 1 \\ \(\bullet\) & Footwear for the diabetic foot [63] & 1 & – & 1 & 1 & 1 & 1 \\ \hline \multicolumn{2}{c}{**Summary**} & 14 & 7 & 6 & 5 & 3 & 19 \\ \hline \multicolumn{2}{c}{**Percentage**} & 26\% & 13\% & 11\% & 9\% & 6\% & 35\% \\ \hline \hline \end{tabular} Note: DM, diabetes mellitus; DFUs, diabetic foot ulcers; PPP, peak plantar pressure; EVA, ethylene–vinyl acetate; PU, polyurethane; PPT, Professional Protective Technology.  
\end{table} 
Table 4: The published paper discussed selected inside materials on the rearfoot region.