Pigmented Villonodular Synovitis (PVNS)

Explanation of Diagnosis

Pigmented villonodular synovitis, or PVNS, is a non-cancerous condition where the lining of a joint (the synovium) becomes overgrown and inflamed. It often affects one joint, most commonly the knee, but it can also occur in the hip, ankle, shoulder, or other joints. PVNS can build up joint swelling and cause pain, stiffness, and sometimes locking or a reduced range of motion. Symptoms can come and go or gradually worsen, especially with repeated loading of the affected joint.

Specific Work Modifications

• Avoid repeated kneeling, squatting, or deep bending on the affected side.
• Limit stairs and long walks; use an elevator or take breaks to reduce symptom flares.
• Use a sit-stand setup so you can change positions before pain builds.
• Choose supportive footwear with good cushioning and avoid worn-out shoes.
• Take micro-breaks every 30 to 60 minutes to gently move the joint through a comfortable range.
• If your job is standing-heavy, use a small anti-fatigue mat and keep weight distributed evenly.

Specific Activity Modifications

• Avoid high-impact activities like running, jumping, or hard court sports until symptoms are stable.
• Limit deep lunges, deep squats, and aggressive stretching into pain, especially if the knee or hip is involved.
• Prefer low-impact exercise such as cycling (easy resistance), swimming, or a gentle elliptical if tolerated.
• Use pacing: short bouts of activity with rest breaks often do better than long continuous sessions.
• Warm up longer than usual and stop before soreness turns into sharp pain or swelling.
• If you notice locking, giving way, or a significant flare afterward, reduce intensity and duration.

Recommended Supplements

• Omega-3 fish oil (about 1,000 mg to 2,000 mg per day combined EPA and DHA) may help support a more balanced inflammatory response.
• Vitamin D3 (commonly 1,000 to 2,000 IU daily, especially if you are low based on a blood test) supports bone and muscle health.
• Curcumin or turmeric extract (commonly 500 mg one to two times daily with food) may help some people with inflammatory joint discomfort.
• Magnesium (commonly 200 to 400 mg daily) can support muscle relaxation and recovery, particularly if you experience muscle tightness.

Recommended Nutrition and Hydration

Diet Recommendations

• Focus on a Mediterranean-style pattern with vegetables, fruit, beans, whole grains, olive oil, nuts, and lean proteins.
• Include omega-3 rich foods such as salmon, sardines, trout, chia, or ground flax if you tolerate them.
• Choose fiber-rich foods and adequate protein at meals to support tissue repair and muscle maintenance.
• Limit highly processed foods and sugary drinks, which can worsen overall inflammatory balance in some people.

Hydration Tips

• Aim for pale-yellow urine by drinking regularly through the day rather than large amounts at once.
• Include fluids with meals and after activity, especially if you sweat or exercise at home.

Home Exercise Prescription

Do these exercises about 4 to 6 days per week, adjusting intensity so symptoms stay mild and return to baseline within the same day.

1. Pain-free active range of motion: Move the affected joint gently through your comfortable arc, 10 reps, slow.
2. Supported weight shifts: Stand near a counter and shift weight gently front to back or side to side, 10 reps each direction.
3. Isometric joint “setting”: Tighten the muscles around the affected joint without moving it (for example, press gently into a wall or your other hand), hold 5 to 10 seconds, 8 to 10 reps.
4. Supported sit-to-stand: Use a sturdy chair, stand up slowly and sit down slowly, 5 to 8 reps.
5. Easy mobility walking: Short, comfortable walks at a conversational pace, 5 to 15 minutes, only if they do not increase swelling.

Helpful Books

• "Explain Pain" written by David Butler and Lorimer Moseley
• "Becoming a Supple Leopard" written by Kelly Starrett and Juliet Starrett
• "Move Your DNA" written by Katy Bowman