5 doctors weighed in:
What exactly causes the stiffness in a rotator cuff injury?
5 doctors weighed in

Dr. Jay Rosenfeld
Physical & Rehabilitation Medicine
3 doctors agree
In brief: See below
Often times, if there is injury in the rotator cuff muscles there is also can be a lot of inflammation of the bursas (fluid sacs) in the shoulder. This can cause the capsule of the shoulder to get sticky and bound down and can also do the same to the tendons.
If a person with rtc injury avoids movement because of pain, they often develops stiffness called adhesive capsulitis.

In brief: See below
Often times, if there is injury in the rotator cuff muscles there is also can be a lot of inflammation of the bursas (fluid sacs) in the shoulder. This can cause the capsule of the shoulder to get sticky and bound down and can also do the same to the tendons.
If a person with rtc injury avoids movement because of pain, they often develops stiffness called adhesive capsulitis.
Dr. Jay Rosenfeld
Dr. Jay Rosenfeld
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Dr. Shawn Hennigan
Orthopedic Surgery
In brief: Rotator cuff injury
Any injury causes a non-specific inflammation response in surrounding tissues.
The rotator cuff tendons surround the shoulder joint, which is close to the shoulder capsule. When the capsule becomes painful/inflamed, it hurts to move, and the shoulder tends to stiffen. Keep the arm moving to prevent frozen shoulder, and see a shoulder specialist for additional recommendations.

In brief: Rotator cuff injury
Any injury causes a non-specific inflammation response in surrounding tissues.
The rotator cuff tendons surround the shoulder joint, which is close to the shoulder capsule. When the capsule becomes painful/inflamed, it hurts to move, and the shoulder tends to stiffen. Keep the arm moving to prevent frozen shoulder, and see a shoulder specialist for additional recommendations.
Dr. Shawn Hennigan
Dr. Shawn Hennigan
Thank
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