Reducing a dislocated shoulder means moving the upper arm bone back into the shoulder socket, and it should be done by a trained medical professional whenever possible. The shoulder is the most commonly dislocated major joint in the body, and roughly 97% of dislocations are anterior, meaning the ball of the joint has slipped forward out of the socket. While several proven techniques exist to accomplish the reduction, attempting it without proper training risks fracturing bone, damaging nerves, or tearing surrounding tissue.
Why Professional Reduction Matters
Before anyone attempts to reduce a shoulder, the joint needs to be assessed for fractures of the upper arm bone, collarbone, or shoulder blade. A fracture changes everything: forcing a broken bone back into position can cause catastrophic damage to blood vessels and nerves. X-rays are the standard way to rule this out, which is one reason emergency departments are the safest setting for reduction.
Posterior dislocations, where the arm bone slips backward, account for only 2% to 4% of cases but carry higher complication rates. These are specifically contraindicated for on-site closed reduction and typically require general anesthesia in a hospital. If you aren’t certain which direction the shoulder has dislocated, that alone is reason to get to an emergency room rather than attempting anything in the field.
Other red flags that rule out a non-hospital reduction include elderly patients, children with open growth plates, signs of nerve or blood vessel compromise, and any concurrent injury like a tendon rupture or deep laceration near the joint.
Common Reduction Techniques
Emergency physicians and trained athletic trainers use a variety of methods. All of them work by overcoming the muscle spasm that locks the arm bone in its dislocated position, then guiding it back into the socket. The choice of technique depends on the clinical setting, the patient’s pain level, and the provider’s experience.
External Rotation
The patient sits or lies down with the elbow bent at 90 degrees and tucked against the body. The provider slowly rotates the forearm outward, like opening a door. This gentle arc often coaxes the humeral head back into the socket without any pulling force. It’s one of the most widely used methods because it requires minimal strength and tends to cause less pain than traction-based approaches.
Stimson Technique
The patient lies face down on a raised bed with the affected arm hanging straight down off the edge. Weights of approximately 10 to 15 pounds are attached to the wrist, and the patient stays in this position for 10 to 20 minutes. Gravity and the sustained pull gradually fatigue the spasming muscles, allowing the shoulder to slide back into place on its own. If it doesn’t work alone, providers sometimes add scapular manipulation, where they push and rotate the shoulder blade to help guide the joint home.
Cunningham Technique
This method uses no traction at all. The patient sits upright and moves their shoulders backward and upward while the provider massages the biceps muscle at the middle of the upper arm. The theory is that the biceps spasm is the primary force holding the arm bone out of position. By relaxing that muscle through targeted massage, the joint reduces itself. It’s described as fast, painless, and drug-free when it works.
Milch Technique
The provider slowly lifts the patient’s arm out to the side (abduction) while rotating it outward. Once the arm reaches an overhead position, gentle pressure on the humeral head nudges it back into the socket. This technique mimics a natural overhead reaching motion, which makes it relatively comfortable for the patient.
The Davos Self-Reduction Method
For people with recurrent dislocations who may find themselves without immediate medical help, the Davos technique is a well-documented self-reduction method. It works for anterior dislocations only.
You sit on a flat surface with the hip and knee on the affected side bent, foot flat on the bed. Place both elbows against the sides of the thigh, palms facing each other, and have someone wrap your wrists tightly together with an elastic bandage just in front of the shinbone. Then slowly lean backward with a straight spine, extend your head back, shrug your shoulders, and let your arms straighten and relax. The leaning creates traction on the shoulder while your bound wrists against the shin provide countertraction. You control how much force is applied by adjusting how far back you lean, keeping the pain tolerable and the muscles relaxed.
This method is taught to patients with a history of repeat dislocations. It is not a substitute for emergency care after a first-time dislocation, which needs imaging and a full assessment.
What Happens Inside the Joint
A dislocation is rarely just a bone popping out of place. Studies of first-time and recurrent dislocations show that a Hill-Sachs lesion, a dent in the back of the arm bone caused by it impacting the socket rim, appears in 84% of cases. A Bankart lesion, where the cartilage rim lining the socket tears away from the bone, shows up in about 73%. These injuries are a major reason shoulders become unstable and dislocate again.
The axillary nerve, which wraps around the neck of the upper arm bone, is particularly vulnerable during dislocation. Damage to this nerve weakens the deltoid muscle, the large cap of muscle on top of the shoulder. In the first few days, pain makes it hard to test for nerve injury. The best indicator of axillary nerve damage is deltoid weakness at one week after injury, assessed by feeling for voluntary muscle contraction in the front, middle, or back fibers of the deltoid.
Immobilization After Reduction
Once the shoulder is back in the socket, standard practice is to immobilize it in a sling for one to three weeks. The majority of clinical evidence points to three weeks as the sweet spot. Studies comparing one week to three weeks of sling use have produced mixed results, but most trials lean toward the three-week mark. Importantly, there is no clear benefit to immobilizing longer than three weeks. Comparisons of three weeks versus five weeks show no difference in healing of the torn cartilage rim or in preventing future dislocations.
Your arm will be held against your body with the hand turned inward, the standard sling position. During this time, you’ll likely be off work or out of sports, depending on the demands of your activity.
Rehabilitation Timeline
Physical rehabilitation typically begins about two weeks after the dislocation and follows a staged progression over roughly six weeks.
- Weeks 1 to 2 of rehab: The focus is on controlling pain and inflammation. Exercises target the rotator cuff and the muscles that stabilize the shoulder blade, using very light resistance (about 30% of what you could lift on your healthy side) for 12 to 15 repetitions.
- Weeks 3 to 4 of rehab: Intensity increases significantly, moving to around 60% to 70% of your healthy-side strength. Exercises expand to include the deltoid, trapezius, and serratus anterior muscles, working through larger ranges of motion in horizontal and diagonal patterns. The goal is restoring both strength and flexibility between roughly 90 and 150 degrees of arm elevation.
- Weeks 5 to 6 of rehab: Progressive strengthening continues with sport-specific or activity-specific movements aimed at preparing you for a full return to your normal demands.
Athletes can sometimes return to activity within two to three weeks of dislocation, though this carries a high risk of re-dislocation. By comparison, those who undergo surgical stabilization (arthroscopy to repair the torn cartilage) typically face a six-month recovery before returning to sport. The tradeoff between early return and long-term stability is one of the most important conversations to have with an orthopedic specialist, especially after a first dislocation in someone under 25, where recurrence rates are highest.