( ( Note ( that ( ( the fibula ) ( is ( medial ( because ( of ( ( the failure ) ( of ( rotation ( of ( the legs ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (NN Note) (SBAR (IN that) (S (NP (DT the) (NN fibula)) (VP (VBZ is) (ADJP (JJ medial) (PP (IN because) (PP (IN of) (NP (NP (DT the) (NN failure)) (PP (IN of) (NP (NP (NN rotation)) (PP (IN of) (NP (DT the) (NNS legs))))))))))))) (. .)))
Note that the fibula is medial because of the failure of rotation of the legs.
(ROOT (S (NP (JJ Medial) (NN rotation)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (NN rotation)) (PP (IN of) (NP (NP (DT a) (NN bone)) (PP (IN toward) (NP (NP (DT the) (NN midline)) (PP (IN of) (NP (DT the) (NN body))))))))))) (. .)))