Acute Shoulder Pain
How to rest more comfortably when your shoulder is painful
Nicola Tik
When the shoulder is painful, finding a comfortable position to rest in can feel like a puzzle that changes every time it seems solved. Sitting on the sofa, lying on the bed, and settling in for the night all become things that need more thought than usual. The difficulty is that the shoulder is involved in almost every resting position to some degree, and without a little adjustment it is easy to spend rest periods in positions that add to the load rather than reduce it. This article looks at why resting positions matter during a recent shoulder pain episode and what adjustments tend to help most.
Rest is supposed to allow the shoulder to recover from the demands of the day. When a resting position places the shoulder under sustained compression, an awkward angle, or uneven load, it prevents that recovery from happening as fully as it should. The shoulder that felt manageable during the day can feel significantly worse after a couple of hours on the sofa or a night in the wrong sleep position, not because anything new has happened but because the sustained load of a poor resting position has accumulated.
Understanding which positions tend to load the shoulder and which tend to reduce that load makes it possible to use rest periods as genuine recovery opportunities rather than sources of additional discomfort.
Sitting on a sofa or chair with the affected arm unsupported is one of the most common sources of shoulder discomfort during rest periods. When the arm hangs unsupported, the weight of it pulls downward on the shoulder joint continuously, which places a sustained load on the muscles and tendons of the shoulder that they would rather not be managing during a rest period.
Supporting the affected arm reduces this load significantly. A cushion or pillow placed on the lap or beside the body at the right height to support the arm comfortably allows the shoulder muscles to genuinely rest rather than working to hold the arm up. The arm should feel fully supported without the shoulder being pushed upward or pulled forward by the support.
Sitting slightly reclined, rather than fully upright, often feels more comfortable for the shoulder because it reduces the downward pull of gravity on the arm and allows the surrounding muscles to relax more fully. A few cushions arranged to support both the back and the affected arm in a reclined position on the sofa tends to be one of the most comfortable resting positions available during a recent shoulder pain episode.
Avoid resting the elbow on a hard armrest at an angle that pulls the shoulder forward or upward. A soft surface at the right height tends to work considerably better than a hard armrest that happens to be there.
Lying down to rest during the day can be genuinely helpful when shoulder pain is significant, but the position matters considerably. Lying directly on the affected shoulder places the full weight of the body on the most sensitive area, which tends to make things considerably worse rather than better.
Lying on the back with a small pillow or folded towel placed under the affected shoulder and arm is often the most comfortable daytime rest position. This prevents the shoulder from sinking back into the surface under its own weight and keeps it in a more supported and neutral position. The arm can rest alongside the body or across the stomach depending on which feels most comfortable.
Lying on the unaffected side with a pillow hugged in front of the body supports the affected arm and prevents it from pulling forward across the chest, which tends to provoke discomfort. The pillow should be thick enough to keep the affected arm roughly parallel to the body rather than dropping forward.
Overnight sleep presents the most significant resting position challenge during a recent shoulder pain episode, because the shoulder is in a fixed position for an extended period without the small adjustments that happen during waking hours.
Sleeping on the affected shoulder is the position most consistently associated with increased overnight discomfort and worse morning symptoms. The combination of body weight and sustained compression on an already sensitive area tends to produce more pain rather than less, and is worth avoiding during the acute phase even if it is the habitual sleep position.
Sleeping on the unaffected side with a pillow hugged in front remains the most reliably comfortable option for most people with shoulder pain. The pillow supports the affected arm, prevents it from rolling forward, and keeps the shoulder in a position that does not require the surrounding muscles to work to hold it in place overnight.
Back sleeping with the affected arm supported on a pillow alongside the body works well for people who find side sleeping uncomfortable. The key is ensuring the arm is fully supported so the shoulder muscles are not working to hold it in position through the night.
A small, soft pillow or folded towel placed under the affected shoulder during back sleeping prevents the joint from sinking back into the mattress and being compressed from behind, which some people find significantly reduces overnight discomfort.
How the transition from lying or sitting to standing is managed during a painful shoulder episode is worth some attention. Using the affected arm to push up from lying, or pulling through the shoulder to rise from a chair, places a sudden and significant load on the most sensitive area at the moment it is least prepared for demand.
Using the unaffected arm to push up from lying, rolling onto the unaffected side first before sitting up, and using the legs and unaffected arm to rise from a chair reduces the demand on the affected shoulder during these transitions and tends to make them considerably more comfortable.