Your knee replacement may feel tight due to several factors, most commonly related to the body's natural healing processes after surgery.
Here's a breakdown of the potential causes:
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Postoperative Factors: This is the most common reason. Your body is healing, and tissues around the knee are undergoing significant changes.
- Swelling and Inflammation: Swelling is a natural part of the healing process. The inflammation can cause a feeling of tightness in and around the knee joint.
- Scar Tissue Formation: Scar tissue naturally forms as your body heals. Excessive scar tissue can restrict movement and contribute to the feeling of tightness. This is also referred to as fibrosis tissue.
- Muscle Weakness and Inactivity: After surgery, your muscles weaken. Reduced activity can further stiffen the joint.
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Infection: While less common, infection can cause significant swelling and inflammation, leading to stiffness and a feeling of tightness. The infection can also lead to increased formation of fibrosis tissue.
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Delayed or Insufficient Physical Therapy: Active participation in physical therapy is crucial after knee replacement. Failing to follow your physical therapy program, or delaying its start, is a frequent cause of post-operative knee stiffness.
Addressing the Tightness:
- Follow Your Physical Therapy Plan: Adhere strictly to the exercises prescribed by your physical therapist. They are designed to improve range of motion and reduce stiffness.
- Manage Swelling: Use ice packs, elevate your leg, and use compression bandages as recommended by your doctor.
- Pain Management: Take pain medication as prescribed to allow you to participate more effectively in physical therapy.
- Communicate with Your Doctor: If the tightness persists or worsens, contact your surgeon. They can evaluate your knee and determine if further intervention is needed.
