The injuries that you sustained do not fully explain all of you symptoms. In most patients who sustain the pelvic fractures
that you describe you would expect a good recovery with maybe mild ongoing pelvic pain
. The nerve
injuries you describe in you lower back would give potentially permanent weakness and numbness
in your leg and you would require and aid and maybe even a brace to help you walk. The injuries you describe however do not explain the problem with you hand and so I would suggest that you seek a further medical opinion
regarding this from you family Dr.