Hip discomfort during sleep is a common problem, particularly for people who sleep on their side. Because the hips represent the centre of body mass, they exert significant pressure on the mattress surface. If this pressure is not distributed effectively, the hip joint and surrounding tissues may experience strain.
Over several hours of sleep, this pressure can lead to soreness, stiffness or discomfort that becomes noticeable during the night or upon waking.
Why the hips carry so much pressure
The pelvis and hip joints are among the heaviest structures in the human body. When lying down, especially in a side sleeping position, much of the body’s weight is concentrated through this region.
If the sleep surface does not allow the hips to settle naturally into the mattress, the joint may remain elevated relative to the rest of the body.
This uneven support can cause pressure to build in the joint and surrounding soft tissues.
How pressure affects hip joints
When pressure builds around the hip joint, it may compress muscles and connective tissues surrounding the joint capsule. Over time this compression can lead to irritation of nearby nerves and reduced circulation.
The body may respond by prompting movement to relieve the pressure. This movement often occurs subconsciously during sleep.
Frequent movement may prevent the body from remaining in deeper stages of sleep for extended periods.
The connection between hips and spinal alignment
The hips also influence the position of the lower spine. If the hips sink too deeply into the mattress, the lumbar spine may curve downward. If they remain too elevated, the spine may arch unnaturally.
Both situations can influence spinal alignment and contribute to discomfort in the lower back.
Balancing pressure relief and support
Reducing hip pressure requires a sleep surface that allows the pelvis to settle slightly while still maintaining support for the surrounding areas of the body.
This balance helps distribute body weight more evenly and allows the spine to remain aligned throughout the night.
References
American Academy of Orthopaedic Surgeons
Sleep Foundation
National Sleep Foundation