How Do I Tear My Rotator Cuff?
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Some tears are traumatic, from a specific injury event, while others are degenerative, created by wear and tear over the years. A common mechanism for traumatic tears is falling on your outstretched arm or elbow. Dislocations of the shoulder joint, in those usually older than 40, can tear the cuff. Cuff tears can also occur from lifting something heavy with a jerking motion.
Are There Different Types of Tears and What are Symptoms of Each Type?
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The most common distinction of tear types is partial thickness or full thickness tears.
How Are Rotator Cuff Tears Diagnosed?
Most rotator cuff tears can be diagnosed by obtaining a good history of the injury event or long term overuse of the arm, and a thorough physical exam focused on passive and active range of motion, strength of the shoulder muscles, and inspection for atrophy of the cuff muscles. Large tears are easier to pick up on exams than small tears. Pain, however, can cause the patient to appear weak on examination of cuff muscles even if there is not a tear. An injection of numbing medication into the space above the rotator cuff, in combination with re-testing strength, may help distinguish if the weakness is just from pain or from tendon injury.
Do I Need Imaging Studies?
If I Have a Rotator Cuff Tear, Do I Need Surgery?
Not all rotator cuff tears require repair. Many older individuals go about their daily lives unaware of having a tear.
If I Choose Surgery, What Does That Mean?
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Historically, rotator cuff repairs were performed through large incisions to expose the tendons and overnight hospital stays. Today, with the aid of the arthroscope, most surgeries are performed in the outpatient setting with patients going home the same day. The arthroscope allows excellent visualization of the rotator cuff from its underside within the joint (articular side) and from above in the subacromial space (bursal side) and allows for placement of repair devices through small plastic cannulas. This is performed through 3 or 4 small incisions (portals). The cuff is repaired using small anchors in the bone with the attached sutures passed through the cuff tendon. Suturing the tendon to the bone seals the tear from the joint fluid and the compression of the tendon on the bone encourages healing of the tendon to the bone. If the tissue quality is less reliable or the tear pattern is complex, after the initial arthroscopy it may be helpful to expand one of the small incisions into a slightly larger one, splitting but not cutting any muscle fibers (“mini-open” technique), to perform a reliable repair.
How Long Is The Recovery After Surgery?
During the first 3-6 weeks, the shoulder is immobilized (sling with a large pad holding the arm out) to protect the repair and allow the swelling and pain to decrease. It also helps you learn to avoid using your arm for lifting, pushing or pulling. You can do simple pendulum exercises and move the elbow to avoid stiffness. Physical therapy is then started to begin working on range of motion and wake up the muscles around the joint.
A tendon takes about 10-12 weeks to heal to the bone. By three months, most repairs are “healed” but the cuff muscles are weak, as they should not be stressed with exercises in the early healing phase. It will take another 2 months or more of rotator cuff and scapular stabilization exercises to regain enough strength to use the shoulder normally or return to overhead activities or sports.
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