Well, just learned this movement as you might have seen so:
Exposition: M1 to m48.
Development: m49 to m100
Recap: m101 to 152
Main theme is a mannheimer rocket, with a little turn at the end. The ascending figure is first played in both F minor, the tonic, and on a C7 dominant chord, the dominant, and after a fermata, the theme returns in C minor from m 9. Then follows a transition through some imitations of the theme into Ab major, where the secondary theme is presented, unstable on its dominant chord, E7. The secondary theme is a melodic inversion of the first theme, being a descending arpeggio. A transition uses the tremolo in the left hand and some small ascending motifs are in the right hand, gasping for breath before some scalepassages lead to the epilogue theme (not sure of the english terminology there) in Ab major in m42.
The development section starts out using the main theme, using a chromatic drop in the lh chords to reach the secondary theme, this time first on an F7 chord, then through the same transition as used in m26-32 leads to the secondary theme on G7. The rhytmical intensity rises as the secondary theme is presented in the left hand from m68, and a sequence leads to a syncopated, non-melodic section, eventually climaxing at m81, where small cells of th side theme are used over left hand tremolos, and a decrescendo leads to a mysterical pp, with insistent knocking chords in the lh, while the rh uses the turn motif from the main theme. Eventually, this end up on Edim, conceived as a dominant to Fminor, missing only the C to be a C7 dominant chord.
Then comes the recap. The rhytm of the main theme is altered, the lh accompaniment this time landing on the first beat at the sforzandi, as are the dynamics, this time forte. The second time the main theme comes around, it is here in Fminor, not C minor as in the expo, as we won't need a transition to the secondary theme. The epilogue theme is stated in F minor, and leads to a typically rhetorical Beethoven-ending: Two question marks in m146-149, and their answer in 150-152.
The movement contains many references to Haydn, Beethovens teacher. The sudden fortissimos (m47 for example), the dramatic ending and mannheimer rocket all point towards Haydn's influence. But the movement also points forward - It has unprecedented drama and agitation, the key signature itself is remote and the mystical part of the development section seems to peek into the future in its dissonance.
Kinda superficial, some of it, I wasn't too careful with listing measure numbers for everythng and describing less important stuff - I just rounded what seems the most important.