He is doing special exercises to strengthen his popliteus muscle.

He put his hand on his popliteal fossa and felt pain.

He works at the blacksmith's every day to forge his skills.

This festival is held every year.

He was hiding in a cave in the mountain.

I strained a muscle at the gym yesterday.

He injured his knee.

This is a special day.

He injured his knee joint.

He started a special exercise to strengthen his articularis genus muscle.