it should b ascertained by an ortho-surgeon, the condition of coracoid process of your shoulder joint.
* articulation of muscle of your shoulder joint is a little bit injured sustaining continuous jerks as expressed by you. Or it may be osteoartheritis.
In both d cases you need physiotherapy
along with homoeo medicines**(pill no 40)
@ arnica 200-6 pills, thrice a day.
@ rhus tox 200-6 pills, thrice a day
* avoid, junk food, replacing with easily digestible diet.