Office Chair Spring Protrusion
Spring protrusion in office chairs can pose health risks and affect user experience, requiring prompt countermeasures.

Health Risks
In old office chairs, the internal springs may deform and protrude, causing a single hard point to press against the perineal area when seated. Although it does not squeeze the abdomen or constrict the waist, continuous single-point contact with the base of the pelvis can slowly and persistently stimulate the body. This stimulation can subtly alter urinary storage perception, gradually increasing bladder sensitivity over time, leading to frequent urges to urinate after sitting for just an hour. Symptoms improve after changing seats. Many men experience relief from frequent urination after changing workstations or vehicles, primarily due to the elimination of this single-point stimulation. Additionally, spring protrusion can cause serious injuries, as there have been reports of individuals being severely injured by protruding springs in the middle of office chairs.
User Experience
Spring protrusion causes the seat to concentrate force at the bottom point, with the entire seated weight stacking on local soft tissues, continuously transmitting upward force that touches the bladder base perception area, gradually lowering the threshold for triggering the urge to urinate. In contrast, a complete and flat seat distributes force evenly, with pressure dispersed across the buttocks and thighs, avoiding contact with the urinary sensitivity area and providing a more comfortable sitting experience for users.
Countermeasures
- Regular Inspection: Regularly inspect office chairs and promptly add a flat cushion to fill in uneven force-bearing surfaces if spring protrusion or fabric sagging is detected, preventing single-point pressure from causing bodily harm.
- Adjust Posture: When sitting, slightly adjust your posture to avoid the protruding area of the seat, shifting the pressure point to the gluteus maximus area, away from the base of the pelvis, to reduce stimulation to the urinary system.
- Choose Cushions: Opt for high-density flat cushions that can disperse seated pressure, eliminating single-point concentrated pressure and enhancing sitting comfort.
- Timely Replacement: For deformed chairs that have been in use for over five years, replace them promptly to eliminateๅฎ็น cavity stimulation at the source, ensuring both physical health and a good user experience.




