The rotator cuff is a group of tendons that help stabilize the shoulder and allow controlled arm movement. These tendons are prone to wear and partial tearing over time, especially with repetitive use or aging. PRP injections are used to support healing within these damaged tendons by delivering a concentrated portion of platelets directly into the affected area. This may help stimulate tissue repair and improve tendon strength. The procedure is typically performed using ultrasound guidance to ensure accurate placement within the rotator cuff. For some patients, PRP can be part of a non surgical approach to managing rotator cuff injuries.

Man holding shoulder with pain, representing rotator cuff injury treated with platelet rich plasma injection

Rotator cuff injuries occur when one or more of the shoulder tendons develop degeneration, inflammation, or partial tears. The supraspinatus tendon is most commonly affected because it passes through a narrow space under the acromion. Over time repetitive overhead movement, sports activity, or age related wear can weaken the tendon fibers. The collagen structure of the tendon may become disorganized and small tears may develop within the tissue. These changes can cause shoulder pain, weakness, and difficulty lifting the arm. Treatments such as platelet rich plasma aim to stimulate biological repair processes that encourage stronger collagen formation and improved tendon structure.

A PRP injection for rotator cuff injuries begins with a blood draw of approximately 30 to 60 milliliters from the patient’s arm. The blood is processed in a centrifuge that separates red blood cells from plasma and concentrates platelets within the plasma layer. The resulting platelet rich plasma is placed into a sterile syringe for injection. Orthopedic physicians commonly use ultrasound imaging to locate the injured portion of the rotator cuff tendon and guide the needle accurately into the damaged tissue. The PRP is injected directly into the affected tendon to deliver growth factors that support tissue repair. The procedure typically takes about 20 to 30 minutes in an outpatient clinic setting.

Clinical studies have investigated platelet rich plasma therapy for patients with rotator cuff tendinopathy and partial tendon tears. Some research has evaluated PRP injections as a non surgical treatment for chronic shoulder pain that has not improved with rest or physical therapy. Results vary between studies, but some patients experience improvements in shoulder pain and function after PRP treatment. In surgical settings, PRP has also been studied as an augmentation during rotator cuff repair procedures to support tendon healing. Outcomes may depend on the severity of the injury, the PRP preparation method, and the rehabilitation program used after treatment.

Recovery after PRP treatment for rotator cuff injuries typically occurs gradually as tendon healing processes develop. Mild soreness in the shoulder may occur during the first one to two weeks after the injection. Many patients begin to notice improvements in shoulder pain and mobility between four and eight weeks following treatment. Rehabilitation exercises are often recommended to strengthen the shoulder muscles and support tendon remodeling. Clinical observations suggest that some patients continue to experience improvements in shoulder function for several months after PRP therapy.

Find doctors offering platelet rich plasma treatment for rotator cuff injuries near you.

This information is educational and not a substitute for professional medical advice. Platelet rich plasma treatments are not FDA approved for all orthopedic uses. Patients should consult a licensed U.S. healthcare professional before pursuing treatment.