Answer:
Rotator cuff
Step-by-step explanation:
Rotator cuff comprises of tendons and muscles that surround the joint of the shoulder, and helps to firmly keep the upper arm bone within the shoulder socket.
Individuals that perform repeated overhead motions are susceptible to the injury of the rotator cuff and also rotator cuff injury can be age dependent.
It causes aches in the shoulder. In other to recover from the injury, physical exercises that strengthen and improve flexibility of the surrounding muscles of the shoulder joints can be done, except in cases with extensive damage where surgery is needed.
Therefore this client is most likely prone to weakness in the rotator cuff.