Here is the list of muscles potentially responsible for these pains, a link can be selected for more details on a particular muscle: Scalene muscles (small scalene) Infraspinatus muscle Teres major muscle Coracobrachialis muscle Triceps
Anatomical reminder The trapezius muscle consists of 3 parts: upper, middle and lower. The anatomical insertions of the two trapezius form a diamond extending from the occiput to the T12 vertebra. Laterally, it attaches to