The first days: sooner on your feet than you'd think
Many patients begin standing, walking with assistance, and exercising the knee soon after surgery, according to their medical team's instructions. Early rehabilitation often focuses on swelling, safe mobility, and knee movement.
Knee extension and flexion can both matter during early recovery. Your surgeon and therapist will set priorities based on the procedure, precautions, and how the knee is healing.
Weeks 2–6: the unglamorous middle
Progress can feel less dramatic during this phase, and stiffness, swelling, or repetitive exercises may be frustrating. What is typical still varies from person to person.
Treatment often continues to address range of motion, thigh strength, walking, and daily tasks. Changes in assistive devices should follow guidance from your surgeon and therapist rather than a fixed week on the calendar.
Weeks 6–12: making the knee useful again
For some patients, the focus increasingly shifts toward function: stairs, getting up from a low chair, or walking farther. We use measurements such as distance, repetitions, strength, and range of motion to discuss progress and adjust goals.
When the knee feels stiff and won't bend
This is the part patients ask about most, and usually with some worry attached. The knee feels tight, bending it takes effort, and it's hard to tell whether that's normal or a sign something has gone wrong.
Stiffness after a knee replacement is common, and several things can feed into it — swelling in and around the joint, the natural instinct to guard a knee that hurts, and the healing tissue itself. Those often improve as swelling settles and the knee is used more.
Working on motion is a routine part of rehabilitation, and it's usually a combination of steady daily work rather than any single technique: guided movement, hands-on care where appropriate, and a home program you keep up between visits. Progress is often measured rather than eyeballed, so you can see change that's hard to feel day to day.
What matters most is raising it early rather than waiting to see. If your motion has stalled, or feels like it's going backwards, tell your therapist and your surgeon promptly rather than at your next scheduled appointment. Options for addressing stiffness can depend on where you are in recovery, so this is a conversation worth having sooner.
Three months and beyond
Many people regain more daily function during this period, and strength or comfort may continue changing beyond three months. Rehabilitation becomes increasingly personal: gardening, walking, work, and golf place different demands on the knee. Your goals and medical guidance help shape the plan.
Warning signs — don't wait on these
Contact your surgeon promptly if you develop new or increasing calf pain, tenderness, redness, or swelling; persistent fever; increasing wound redness, tenderness, or drainage; or worsening pain. Call 911 for sudden shortness of breath or chest pain, which can be signs of a pulmonary embolism. Follow your surgeon's specific instructions if they differ.
Where we come in
We follow the surgeon's available protocol and coordinate with the referring office when clinically necessary and authorized. Call us to confirm the communication and documentation process for your case. If your replacement is already on the calendar, you're welcome to call us beforehand to discuss what rehabilitation may involve.
This article is general education, not medical advice. For guidance specific to your situation, talk to a licensed provider — or call us at (559) 431-6700.
Dealing with this yourself?
Learn more about Post-Surgical Rehabilitation, or call to schedule — we accept Kaiser, Medicare, and PPO plans.