MCL Sprain

Explanation of Diagnosis

An MCL sprain is an injury to the medial collateral ligament, a strong band of tissue that helps stabilize the inner (medial) side of your knee. It often happens when the knee is hit from the outside or forced inward (valgus), such as during a fall, awkward landing, or a sudden twist. Common symptoms include pain along the inner knee, tenderness to touch, mild swelling, and pain when you walk, climb stairs, or change direction. Some people also notice a feeling of looseness, especially when pushing off or pivoting.

Specific Work Modifications

• Avoid standing with your knee turned inward or twisting your planted foot; pivot with your whole body instead.
• Limit repeated kneeling, squatting, and deep knee bending when possible.
• Take short movement breaks every 30 to 60 minutes to avoid stiffness and flare-ups.
• If your job involves stairs, use hand support and take them one step at a time, reducing speed and load.
• Use a supportive chair height and workstation setup so your knee stays in a comfortable, not deeply bent, position.
• If walking is needed for work, consider using a cane or brace if recommended by your clinician to reduce stress on the inner knee.

Specific Activity Modifications

• Avoid running, jumping, and sports that involve cutting, pivoting, or side-to-side movement until your pain and stability improve.
• Skip drills that require sudden acceleration/deceleration or forced changes of direction.
• Avoid heavy leg strengthening (especially anything that causes medial knee pain or valgus stress), such as aggressive split squats or wide-stance movements early on.
• Choose low-impact options like stationary biking with low resistance or flat-surface walking if it stays comfortable.
• When returning to sport or practice, progress gradually and stop any activity that increases inner-knee pain, swelling, or a “wobbly” feeling.

Recommended Supplements

• Omega-3 fish oil 1,000 mg 1 to 2 times daily with meals may help support a less inflammatory environment during recovery.
• Curcumin (turmeric extract) 500 mg 1 to 2 times daily with food may help with general soreness in some people.
• Collagen peptides 10 g daily may support connective tissue health when combined with regular rehab.
• Vitamin D3 1,000 to 2,000 IU daily can be helpful if you have low sun exposure or known low levels; consider checking with your clinician.

Recommended Nutrition and Hydration

Diet Recommendations

• Aim for adequate protein (for many people, roughly 20 to 40 g per meal) to support tissue repair.
• Include colorful fruits and vegetables daily to provide antioxidants that may help reduce lingering inflammation.
• Choose healthy fats such as olive oil, nuts, seeds, and fatty fish to support overall recovery.
• Stay consistent with calories and avoid crash dieting, which can slow healing.

Hydration Tips

• Drink enough fluids so your urine is pale yellow.
• Add fluids with activity and in hot weather, and include electrolytes if you sweat heavily.

Home Exercise Prescription

Do these exercises 5 days per week, once daily, focusing on gentle, pain-free motion.

1. Ankle pumps: While sitting or lying down, move your ankle up and down 30 reps.
2. Heel slides: Lie down and slowly slide your heel toward your body within a comfortable range, hold 1 to 2 seconds, then return; do 10 to 15 reps.
3. Quad sets (knee tightening): Tighten the thigh muscle to press the knee gently toward the bed without forcing; hold 5 to 10 seconds, do 10 reps.
4. Straight leg raises: With the knee straight, lift your leg about 12 inches (or as high as comfortable) and lower slowly; do 8 to 12 reps.
5. Glute bridges: Lie on your back with knees bent slightly, lift hips until you feel your glutes working, then lower slowly; do 8 to 12 reps with a 3 to 5 second hold at the top.
6. Calf stretch: Stand facing a wall, keep the injured leg back, and gently stretch the calf without bouncing; hold 20 to 30 seconds, repeat 3 times.

Helpful Books

• "Explain Pain" written by David Butler and Lorimer Moseley
• "The Sports Medicine Patient Advisor" written by American Academy of Orthopaedic Surgeons
• If your symptoms sharply worsen, stop the exercises and contact your clinician.