Forbid page break after the title in mdframed

Question

I use mdframed for my theorems like this

\mdfdefinestyle{theoremstyle}{%
  %adjustable lengths
  %inner margins
  innertopmargin=\topskip,
  % outter margins
  skipabove= 0.1in,
  skipbelow= 0.1in,
  % colrs
  linecolor=red!60,
  middlelinewidth=2pt,%
  roundcorner=5pt,
  apptotikzsetting={\tikzset{mdfframetitlebackground/.append style={%
  shade,left color=white, right color=blue!20}}},
  % Title
  frametitlefont=\TheoremHeaderFont\bfseries,
  frametitlerule=true,%
  frametitlerulecolor=orange!60,
  frametitlerulewidth=2pt,
  % Miscellaneous
  nobreak=false,
}

Sometimes page break occurs right after the theorem title. How I can prevent to break the frame between title and content?

EDIT BY yori. I'm having the same problem, so here is a MWE:

\documentclass{article}

\usepackage{lipsum}
\usepackage{mdframed}
\usepackage[a4paper,margin=1.75in]{geometry}

\begin{document}
\lipsum[1-5]

\begin{mdframed}[frametitle={The title}]%
\[
x^2+y^2=z^2.
\]
\end{mdframed}

\end{document}

Answer 1

UNSATISFACTORY ANSWERS:

One way to solve this problem is to use the needspace option:

\documentclass{article}

\usepackage{lipsum}
\usepackage{mdframed}
\usepackage[a4paper,margin=1.75in]{geometry}

\begin{document}
\lipsum[1-5]

\begin{mdframed}[needspace=6em, frametitle={The title}]%
\[
x^2+y^2=z^2.
\]
\end{mdframed}

\end{document}

This tells mdframed to place the first page break at least 6em (vertically) into the frame. It is a bit of an unsatisfactory solution though, because it does not really express the intention, and it needs manual tweaking in the case of multi-line titles.

A second approach is to emulate the title, and add a \nobreak after the title:

\documentclass{article}

\usepackage{lipsum}
\usepackage{mdframed}
\usepackage[a4paper,margin=1.75in]{geometry}

\begin{document}
\lipsum[1-5]

\begin{mdframed}
\textbf{The title} \\ \nobreak
\[
x^2+y^2=z^2.
\]
\end{mdframed}

\end{document}

This works better, but still breaks in certain cases...