Exam,
including nerve exam, and special tests are repeated, to make sure there is no new or worsening problem
Exam can also include looking at how you walk, your range of motion at each joint and spine,
If you have leg pain/ numbness/ tingling, you may get additional exam tests:
Straight Leg Raising Test (SLR)
and other similar tests such as crossed SLR, slump etc to reproduce your leg problem
Sacroiliac joint ( buttock area) may be tested by Faber/ Patrick, Gaenslen, Yeoman tests