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Arthroscopic Supraspinatus Repair
What Is Supraspinatus Tear
A supraspinatus tear is a tear or rupture of the tendon of the supraspinatus muscle. The supraspinatus is part of the rotator cuff of the shoulder. Most of the time it is accompanied with another rotator cuff muscle tear. This can occur in due to a trauma or repeated micro-trauma and present as a partial or full thickness tear. Most of the time the tear occurs in the tendon or as an avulsion from the greater tuberosity. The shoulder joint is made up of three bones: the humerus, scapula and clavicle. The head of humerus and glenoid of the scapula form a ball-and-socket joint. The supraspinatus muscle is located on the back of the shoulder, forming part of the rotator cuff.
Supraspinatus
- Origin: Supraspinous fossa of the scapula
- Insertion: Greater tubercle of the humerus
- Innervation: Supraspinatus nerve (C5-C6)
- Function: Abduction of the glenohumeral joint; assists the rotator cuff in stabilizing, control and movement the shoulder; assists in preventing sublaxation at the shoulder
What Is Rotator Cuff Repair
The rotator cuff is a combination of muscles and tendons that link your upper arm bone, the humerus, to your shoulder blades. The rotator cuff also holds your upper arm bone in place in your shoulder socket. The four muscles of the rotator cuff are the supraspinatus, the infraspinatus, the teres minor and the subscapularis. Each muscle is connected to the arm bone by a tendon. Rotator cuff repair is the surgery used to repair a tear in one of these tendons.
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Symptoms of Rotator Cuff Injuries
People of all ages injure their rotator cuffs. Some are good candidates for surgery, while others will pursue different treatments.
You can injure your rotator cuff through wear and tear or poor movement patterns over time. Slouching and chronically pushing your head forward are two movement patterns that put your rotator cuffs at risk. As you get older, the rotator cuff can be irritated or pinched by calcium deposits in your shoulder area or bone spurs due to arthritis.
Repetitive stress is another culprit. Tennis players, swimmers, and baseball pitchers are at risk for repetitive stress injuries of the shoulder, as are carpenters and painters.
Rotator cuff injuries vary. Your tendons may be inflamed from overuse, or partially or fully torn. You may also feel pain in your shoulder from bursitis. This is a condition in which the bursa, a sac filled with fluid that sits between your rotator cuff and your shoulder joint, becomes inflamed and irritated.
Symptoms of a rotator cuff injury include:
- shoulder weakness
- not wanting to move your shoulder
- shoulder pain, especially when you lift, pull, and reach behind your back or overhead
- decreased range of motion in your shoulder joint
Diagnosing Rotator Cuff Injuries
A medical history and a physical exam are extremely important for proper diagnosis of rotator cuff injuries. You will need to get a complete medical history. This is the time to tell your doctor about your activity and exercise history. Your doctor will also perform a physical exam. During the exam they will do a series of maneuvers to help determine the cause of the pain you’re experiencing.
Your doctor will then order certain tests to confirm the diagnosis. These could include shoulder X-rays, MRI, or an ultrasound. An MRI uses radio waves and magnetic fields to take pictures of the structures and organs inside your body. An ultrasound uses sound waves to form pictures of your insides. These tests all give slightly different views of the internal structure of your shoulder.
Based on the exam findings and results of the imaging tests, your doctor will decide whether or not rotator cuff repair surgery is your best treatment option. If surgery is being considered, your surgeon may want to examine your shoulder further by using an arthroscope. However, this is not always done. During an arthroscopy, a small camera will be used to investigate your rotator cuff. During this procedure, you’ll first receive a numbing agent for your shoulder. Then, your doctor will poke a small hole in your shoulder and insert the camera, which is linked to a video monitor. Your surgeon will use this camera to look at your tendons, ligaments, and cartilage to determine whether surgery may help to solve your shoulder problems.
Rotator Cuff Repair Procedure
You’ll either receive general or regional anesthesia. If you have general anesthesia, you’ll sleep through the procedure. In the case of regional anesthesia, you’ll be groggy but awake. Regional anesthesia will leave your arm and shoulder numb, so you shouldn’t feel anything during surgery. This numbness may last for up to 16 hours.
A rotator cuff repair is usually done with either an arthroscope or as a surgery with an open, large incision or a very small incision. If your surgeon repairs your rotator cuff with an arthroscope, they’ll put the small camera in one hole, and then make one to three additional small incisions for other instruments. The surgeon will use these instruments to reattach your tendon to your bone.
Once the tendon is in the right place, your surgeon will attach it with sutures. Often, surgeons will use small rivets called suture anchors. These rivets may be made of metal or of a material that eventually dissolves. Neither type of rivet will need to be removed. The sutures attach to the rivets, reattaching the tendon to the bone from where it was torn.
If your rotator cuff tear is larger, you may need a traditional surgery approach to fix it. This means a larger, open incision instead of the arthroscopic approach. The incision could be 2.5 to 4 inches long for a regular open repair, or 1.25 to 2 inches long for a mini-open repair.
Open surgery, mini-open surgery, or an arthroscopy might be necessary if your doctor wants to remove calcium deposits or a bone spur. A bone spur is a bony growth that can press on nearby ligaments, nerves, or tendons, causing pain. Bone spurs often develop as people age.
Once your incisions are stitched up, your healthcare team will apply a clean dressing. If you had an arthroscopy, your doctor may show you pictures of your shoulder and the repairs that were done.
Recovery from Rotator Cuff Repair
After surgery, your doctor may instruct you to keep your arm in a sling for four to six weeks. You may also need to wear a shoulder immobilizer. There are many styles of shoulder immobilizers, but they look like a short sleeve attached to a strap wrapped around your chest. This protects your shoulder by holding it in place.
Your doctor may also prescribe pain medications because shoulder surgery can be painful. Once you start to heal, you may also want to begin a course of physical therapy. Therapy will help restore your muscle strength and range of motion.
Recovery may take between three and six months, depending on the extent and nature of your shoulder injury.