Have you tried creating mnemonic images for the words? (If you aren’t familiar with that technique yet, see the free ebook, the FAQs, and the rest of the getting started guide.)
greater tuberosity – “tuberosity” sounds like “tuber” so you could use an image of a potato. Or maybe YouTuberocity – a video website for potato videos?
head – an image of a head
bicipital groove – a dance move where you flex your biceps
pectoral ridge – pectoral muscles, or a ridge on the edge of town where people only exercise their pecs.
deltoid ridge – deltoid muscles, or a ridge on the other side of town where people only exercise their delts.
fossa – fossils
trochlea – tracheotomy or trochaic meter (poetry)
Basically, you can link new information (like details of the bones) to things you already know (like major muscle groups, statues, and potatoes).
After you have the mnemonic images, you could attach them to the relevant parts of the bones and link them together with the story method.
You might be able to use features on the bones themselves as the memory journeys.