Question: I have trouble displaying an abbreviation nicely.
Removing largesmallcaps is a small improvement, but looks really bad in full document. I want normal numbers in the rest of the document. 

How can I make the zero appear the correct size and differentiate it nicely from the O?

MWE:

```
\documentclass{article}
\usepackage[largesmallcaps]{kpfonts}
\begin{document}
1234567890
\oldstylenums{1234567890}
\textsc{lod}\oldstylenums{0}
\textsc{lod0}
\end{document}

```

[![enter image description here](https://i.stack.imgur.com/r0JDT.png)](https://i.stack.imgur.com/r0JDT.png)

Answer: 
This can be achieved by combining `multirow` from the eponymous package with `rotatebox` from the `graphicx` package as follows:

```
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{booktabs}
\usepackage{graphicx}
\usepackage{multirow}

\begin{document}
\begin{table}[!ht]
\centering
\begin{tabular}{lllll}
\toprule
    &      & Surveillance de                     & Fonctionnalité & Feedback \\
\midrule
\rotatebox[origin=c]{90}{AVQ} &Verre     & Indépendance lors d'AVQs            &                &          \\
\midrule
\multirow{2}{*}{\rotatebox[origin=c]{90}{Main}} &Osselet   & Dextérité                           &                &          \\
&Cube      & Préhension globale de la main       &                &          \\
\midrule
\multirow{2}{*}{\rotatebox[origin=c]{90}{Bras}} &Bracelet  & Activité motrice du bras            &                &          \\
&Pull-over & Extension du coude                  &                &          \\
\bottomrule
\end{tabular}
\caption{Récapitulatif des fonctionnalités de chaque objet}
\label{recap_fonctionnalites}
\end{table}

\end{document}

```

[![enter image description here](https://i.stack.imgur.com/XiP3S.png)](https://i.stack.imgur.com/XiP3S.png)

Please note that I have additionally removed the vertical line as `booktabs` horizontal rules are not intended to be used in combination with vertical lines.
I propose this variant, with `intersecting` horizontal and a (`thicker`) vertical rules, an adjustment of the position of the vertical text, and some padding of rows:

```
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[svgnames, table]{xcolor}
\usepackage{booktabs}
\usepackage{rotating}
\usepackage{multirow, makecell}

\begin{document}

\begin{table}[!ht]
\centering
\aboverulesep=0pt
\belowrulesep=0pt
\setcellgapes{4pt}\makegapedcells
\begin{tabular}{ll!{\color{Gainsboro!60!Lavender}\vrule width0.4em}lll}
\toprule
    & & Surveillance de & Fonctionnalité & Feedback \\
\arrayrulecolor{Gainsboro!60!Lavender}\midrule[0.1em]
\rotatebox[origin=c]{90}{AVQ} &Verre & Indépendance lors d'AVQs & & \\
\midrule
\multirowcell{2}[-0.4ex]{\rotatebox[origin=c]{90}{Main}} &Osselet & Dextérité & & \\
&Cube & Préhension globale de la main & & \\
\midrule
\multirowcell{2}[-0.3ex]{\rotatebox[origin=c]{90}{Bras}} &Bracelet & Activité motrice du bras & & \\
&Pull-over & Extension du coude & & \\
\arrayrulecolor{black}\bottomrule
\end{tabular}
\caption{Récapitulatif des fonctionnalités de chaque objet}
\label{recap_fonctionnalites}
\end{table}

\end{document} 

```

[![enter image description here](https://i.stack.imgur.com/Dmzr5.png)](https://i.stack.imgur.com/Dmzr5.png)