In desperate need of help with this statically indeterminable problem

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The discussion revolves around analyzing the forces acting on a human leg in a specific position, focusing on determining the force exerted at point C. The setup includes a pin connection at the ankle (point B) and involves the shin (AB) and thigh (BC). The user acknowledges potential confusion in their initial description, clarifying that point A is the pin joint. They seek guidance on how to proceed with the problem, expressing uncertainty about the applicability of static equilibrium equations due to the statically indeterminable nature of the situation. Input from others is welcomed to help clarify their approach and identify any mistakes.
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Homework Statement



http://img855.imageshack.us/img855/5648/fbds.png

Basically I am analysing the human leg in the given position. I need to find the force (F) which is exerted at point C, when the person is in such a position. Point B represents a "pin connection" at the ankle, body AB is the shin, BC - the thigh. All masses and distances are known.

Homework Equations



These are the main equations of static equilibrium for the two bodies.

http://img600.imageshack.us/img600/6118/equilibriums.png

Unknowns: Bx,By,N,Ax,Mb,Mc,F.

The Attempt at a Solution



That was my attempt, I am not looking for a numerical solution, just some help with how should I continue... If this truly is a statically indeterminable problem, I don't think that the method of superposition or other deviation related methods could help... Any input would be greatly appreciated. Even if it includes pointing out a stupid mistake of mine.. :D Thanks, guys!
 
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"Point B represents a "pin connection" at the ankle, body AB is the shin, BC - the thigh."

If B is the ankle and AB the shin, how can BC be the thigh?
 
Omg, stupid mistake, sorry. A is the pin joint.
 
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