This seems to involve multiple joints dysfunction.
Urine incontinence can occur due to mainy reasons, one may be related to lumbar spine. If it's that, then that will affect your knee movements.
Pain in shoulder & hand maybe due to problem related to cervical spine which occurs due to long sitting hours. One needs to look after changing in positions in long hour sitting.
Next Steps
Visit an orthopaedic or a Physiotherapist. Get yourself well examined.
Health Tips
Try to maintain your range of motion of painful joints by moving your limbs up & down.