After shoulder surgery, your sling keeps the repaired tendons or joint in a protected position so healing tissue isn’t stretched or torn before it has time to anchor. Most surgeons prescribe sling use for four to six weeks following a repair, though the exact timeline depends on what was fixed and how quickly you progress. Getting the fit right, sleeping comfortably, and managing everyday tasks like showering and dressing are the parts most people struggle with, so here’s what you need to know.
Why the Sling Matters
The goal of immobilization is to give repaired tissue enough stillness to heal while you gradually introduce gentle movement to prevent stiffness. After a rotator cuff repair, for example, the reattached tendon needs weeks of protection before it can tolerate any active use. The sling prevents you from reflexively reaching, lifting, or catching yourself with the surgical arm. Even small, unconscious movements can stress a fresh repair.
Getting the Fit Right
Your elbow should sit snugly in the pocket of the sling, bent at roughly a right angle. The most important detail people miss is hand height: your hand should rest slightly above the level of your elbow, not dangling below it. This position encourages blood to flow back toward your heart and reduces swelling in your fingers and wrist. If your fingers feel puffy or tingly, check that your hand isn’t sagging.
Adjust the strap so the sling holds your arm against your body without pulling your shoulder forward or hiking it up toward your ear. The weight should distribute across the back of your neck and opposite shoulder. If the strap digs in, a small pad or folded washcloth under the strap helps. Your wrist should be in a neutral position, not bent or twisted inside the sling.
Standard Sling vs. Abduction Pillow
Not every shoulder surgery uses the same sling. A standard sling holds your arm flat against your torso. An abduction pillow sling, which looks like a small cushion wedged between your arm and body, holds the arm slightly out to the side. Surgeons commonly use abduction pillows after reverse total shoulder replacement and some larger rotator cuff repairs, typically for three to four weeks. The pillow reduces tension on the repair by keeping the arm in a position that takes strain off the healing tissue. Your surgeon will tell you which type to use, and switching to a different style on your own can compromise the repair.
How Long You’ll Wear It
The general rule for surgeries involving a repair is six weeks of sling use, with earlier weaning if you meet certain benchmarks: manageable pain, decent passive range of motion, and the ability to keep your arm calm without the sling reminding you. One military study tracked sling weaning across several shoulder procedures and found that rotator cuff repairs averaged about 23 days before patients could begin spending time out of the sling, while simpler procedures like arthroscopy without repair averaged around 13 days. SLAP repairs (a type of labral fix) fell in between at roughly 20 days.
These numbers reflect a criterion-based approach, meaning your surgeon assesses your progress rather than relying on a rigid calendar. Some people wean faster, some slower. “Weaning” typically means removing the sling for short periods during controlled activities, then gradually extending that time as your comfort and control improve.
Sleeping in a Sling
Sleep is the most common complaint in the first few weeks. Lying flat increases pressure on the shoulder joint and makes swelling worse, so avoid it. The two best options are a recliner or a wedge pillow setup that props your upper body at an incline. If you’re in bed, stack pillows or use a foam wedge to keep your torso elevated, then tuck a small pillow under your surgical arm for support. This keeps the shoulder in a neutral, protected position and takes the weight of your arm off the repair.
Keep the sling on while you sleep. Most people who re-injure their repair in the early weeks do so by rolling onto the surgical side or flinging the arm during sleep. If you tend to move around at night, placing a pillow behind your back can block you from rolling over.
Showering and Skin Care
Limited shoulder movement creates a warm, damp environment in your armpit that’s prone to fungal infections and skin irritation. You’ll want to clean that area daily, which is tricky when you can’t lift your arm.
Many surgeons provide a separate waterproof or washable sling for the shower. While wearing it, lean your elbow against the wall to let your arm passively drift slightly away from your body. This opens enough space for your good hand to wash your armpit. Use an antibacterial soap, then after drying, apply a fast-drying spray deodorant followed by an antifungal powder (the non-aerosol type) to absorb moisture. This layered approach cuts down on both bacterial buildup and fungal growth.
Wear loose-fitting shirts with short sleeves rather than tank tops. You want fabric in the armpit area to wick moisture and prevent skin-on-skin contact, which accelerates irritation and thrush.
Getting Dressed With One Arm
The sequence matters and it’s the opposite of what feels intuitive. When putting on a shirt, dress the surgical arm first. Slip your affected hand into the sleeve, then use your good arm to feed the fabric over your elbow and up your upper arm. Once that sleeve is on, grab the collar and pull the shirt around your neck so your good arm can slide into the other sleeve. When undressing, reverse the order: take the good arm out first, then carefully remove the shirt from your surgical side.
Button-down or zip-up shirts are far easier than pullovers in the first few weeks. Loose, stretchy fabrics save you time and frustration. Some people find it helpful to lay the shirt on a bed and step into the sleeve rather than trying to maneuver it while standing.
Exercises While in the Sling
Your surgeon or physical therapist will likely introduce pendulum exercises early in recovery. These involve leaning forward, letting your surgical arm hang straight down out of the sling, and gently swaying it in small circles using your body’s momentum rather than your shoulder muscles. The timing for starting these varies by procedure, so follow your specific instructions rather than a general timeline.
Pendulum exercises prevent the shoulder capsule from tightening up while keeping the repair safe. They require no active muscle contraction in the shoulder. Between exercise sessions, the sling goes back on. Resist the temptation to “test” your arm with active movements. The repair may feel strong before it actually is.
Driving After Surgery
Driving is one of the first freedoms people want back. In the United States, driving with a sling has no legal restrictions, but that doesn’t mean it’s safe. Many surgeons default to telling patients to wait the full four to six weeks of sling use before driving. However, research from the Journal of Bone and Joint Surgery found that patients who had rotator cuff repair could safely return to driving at two weeks after surgery, performing no worse than their pre-surgical driving ability on every measured dimension of driving fitness.
The practical considerations: you need to be off narcotic pain medication, able to react quickly enough to brake or steer in an emergency, and confident you can control the vehicle. If your surgery was on your left shoulder and you drive an automatic transmission, the physical demands are lower than if your right arm is in a sling and you need it for the gear shift. Talk to your surgeon about your specific situation rather than assuming a blanket timeline applies.