How Overweight Affects Your Knees & Spine — The Hidden Damage You Don’t See: By Dr. Balaraju Naidu, Robotic Orthopedic Surgeon, ONUS Robotic Hospitals
Being overweight is not just a cosmetic issue — it is a major medical concern, especially for your knees and spine, the two structures that carry your entire body weight. Many people suffer from chronic knee pain or back pain without realizing that excess weight is the root cause.
How Extra Weight Damages Your Knees
Your knee joints act like shock absorbers. But when you are overweight, the pressure increases drastically.
- 1 kg of excess weight = 4 kg of extra load on each knee.
- This accelerates cartilage wear, leading to osteoarthritis.
- Inflammation increases, leading to swelling and stiffness.
- Stairs, squatting, and sitting cross-legged become painful.
- Long-term overweight causes bowing of legs (varus deformity).
- Many patients require knee replacement surgery earlier than expected due to obesity.
Impact on the Spine
Your spine supports your entire upper body. When you gain weight, especially around the abdomen, the spine is forced to work harder.
- Increased lumbar lordosis (forward curve)
- Faster disc degeneration
- Sciatica due to nerve compression
- Facet joint arthritis
- Poor posture → chronic stiffness & fatigue
- Higher risk of slipped discs
In short, excess weight changes your posture, compresses your discs, and weakens your core muscles, causing long-term back pain.
The Dangers of Belly Fat
Abdominal fat is particularly harmful because:
- It shifts your centre of gravity forward
- Constantly strains your lower back
- Increases the load on discs
- Leads to weak abdominal and spinal muscles
- Disturbs natural spinal alignment
How Much Weight Loss Helps?
Just a 5–10% reduction in body weight can:
- Reduce knee pain by up to 40%
- Improve mobility
- Reduce inflammation
- Lower risk of arthritis progression
- Strengthen muscles with proper exercise
Simple Steps to Protect Your Knees & Spine
- Walk 30 minutes daily
- Strengthen quadriceps & core muscles
- Avoid sitting for long hours
- Use ergonomically correct chairs
- Follow a calorie-controlled, protein-rich diet
- Get physiotherapy if pain persists
When Should You See a Doctor?
Seek medical help if you experience:
- Persistent knee/back pain > 2 weeks
- Pain with swelling
- Morning stiffness
- Numbness or tingling in legs
- Difficulty climbing stairs
- Pain disturbing sleep
Early evaluation prevents long-term complications.
For Appointments:
ONUS Robotic Hospitals – Hyderabad
