A joint replacement is surgery that removes damaged joint surfaces and replaces them with metal, ceramic or plastic components. Knees, hips and shoulders are replaced most often, usually because of advanced arthritis. Structured physical therapy is what turns a successful surgery into a functional joint. SportsMed Physical Therapy provides joint replacement rehabilitation at clinics across New Jersey and Connecticut.
What Is a Joint Replacement?
Joint replacement, or arthroplasty, resurfaces a worn joint with implanted components. In a total knee replacement, the femur and tibia ends are capped and the kneecap is often resurfaced. In a total hip replacement, the femoral head becomes a stem and ball and the socket receives a new cup. Shoulder replacements may be anatomic or reverse. More than one million hip and knee replacements are performed in the United States each year, most in adults aged 55 to 80. The implant handles the joint surface, but the muscles, balance and movement habits around it still need retraining.
What Leads to a Joint Replacement?
Joint replacement is usually the endpoint of a long process rather than one event. Cartilage wears down over years, the joint space narrows, and pain limits walking, stairs and sleep. Surgeons typically recommend replacement only after physical therapy, weight management, medication and injections have been tried. Some replacements follow trauma, such as a hip fracture.
- Advanced osteoarthritis with cartilage loss and bone-on-bone contact
- Rheumatoid or other inflammatory arthritis
- Prior joint injury, ligament tear or meniscus damage
- Hip fracture or avascular necrosis of the femoral head
- Pain limiting walking, stairs, dressing or sleep
What Are the Symptoms Before and After Surgery?
Before surgery, most patients describe deep joint pain, morning stiffness, grinding and a shrinking walking distance. After surgery, symptoms shift: swelling, incision tenderness, stiffness and quadriceps or gluteal weakness are expected early and improve with therapy.
- Deep aching pain and stiffness before surgery
- Reduced walking tolerance and difficulty with stairs
- Post-surgical swelling and warmth around the joint
- Limited bending or straightening in the first weeks
- Weakness and a limp from muscle inhibition
Seek prompt medical attention if you develop fever, spreading redness or drainage from the incision, sudden calf pain and swelling, or shortness of breath, since these may signal infection or a blood clot.
How Is Progress After Joint Replacement Assessed?
Your surgeon confirms implant position and healing with X-rays. Your therapist measures function: goniometric range of motion, strength testing of the quadriceps, glutes or rotator cuff, girth for swelling, and timed tests such as sit-to-stand and timed up and go. Gait is analyzed for limp and step length. These measures repeat through your plan of care, so progress is tracked with numbers and plateaus are caught early.
How Physical Therapy Treats Joint Replacement Recovery
Rehabilitation determines how well a new joint performs. Without it, patients often end up with lasting stiffness, a limp and muscle weakness. SportsMed provides dedicated joint replacement therapy built around your surgeon’s protocol and your goals.
The first phase controls swelling, protects the incision and restores early motion, emphasizing full knee extension or hip mobility because early stiffness is hard to reverse. Therapists then progress to closed-chain strengthening and step work. Gait and balance training corrects the limping pattern many patients adopt before surgery, and the Alter-G anti-gravity treadmill lets patients walk with reduced body weight while strength catches up. For those who cannot travel at first, in-home physical therapy bridges hospital discharge and outpatient care. HomeCare is available from our Brick, Englewood, Franklin Lakes and Jersey City McGinley Square locations.
| Phase | Typical Timeline | What It Involves | Goal | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
How Long Does Recovery Take?
Most knee and hip replacement patients walk without an assistive device and resume driving within four to six weeks, and return to most daily activities by three months. Strength and comfort often keep improving through twelve months, and shoulder replacements typically take four to six months. Recovery is quicker with prehabilitation, early therapy and consistent home exercise, and slower with inactivity, diabetes, smoking or delayed rehabilitation.
Joint Replacement Rehabilitation Near You in New Jersey and Connecticut
SportsMed provides post-surgical joint rehabilitation at clinics across New Jersey and Connecticut. In Essex County, patients recover at physical therapy in West Orange, NJ, physical therapy in Belleville, NJ and physical therapy in Bloomfield, NJ, with clinics also in Montclair, Maplewood and Newark. Hudson County patients use physical therapy in Bayonne, NJ and physical therapy in North Bergen, NJ, along with Harrison, Union City, West New York and Jersey City. Connecticut patients visit physical therapy in Bridgeport, CT, and Bergen County neighbors often choose Paramus. We serve Bergen, Essex, Hudson, Middlesex, Monmouth, Morris, Ocean, Passaic and Union Counties, plus Fairfield and New Haven Counties. See all New Jersey locations and Connecticut locations, then book your first visit.
Frequently Asked Questions About Joint Replacements
Q: How soon after surgery should physical therapy start?
A: Very soon. Most patients begin moving the day of or the day after surgery in the hospital, then start outpatient or in-home therapy within the first week or two. Early motion and muscle activation strongly influence final range of motion after knee replacement.
Q: How many therapy sessions will I need after a joint replacement?
A: Most knee and hip replacement patients attend two to three sessions per week for six to twelve weeks, then taper as goals are met. The number depends on your strength, the joint replaced and your surgeon’s protocol. Home exercise matters as much as clinic time.
Q: Can physical therapy before joint replacement surgery help?
A: Yes. Prehabilitation strengthens the muscles around the joint, teaches you to use crutches or a walker in advance, and improves baseline function. Patients who enter surgery stronger often regain independence sooner, though results vary with age and health. Two to six weeks of prehabilitation is typical.
Q: Will I be able to kneel, garden or play golf again?
A: Many patients return to golf, cycling, swimming, gardening and hiking. Kneeling comfort after knee replacement varies and does not return for everyone. High-impact running and jumping are generally discouraged to protect implant life. Your surgeon and therapist guide activity choices.
Q: Does insurance cover joint replacement rehab, and do I need a referral?
A: Most plans, including Medicare, cover post-surgical physical therapy. New Jersey and Connecticut permit direct access, but after surgery we coordinate with your surgeon and many plans request a referral or authorization. Our staff verifies your benefits before the first appointment.
Q: What if I also have arthritis in my other joints?
A: That is common. Rehabilitation accounts for the whole body, so a program after knee replacement also addresses hip strength, balance and any osteoarthritis of the knee on the other side. Broader post-operative rehabilitation principles apply across joints, and balance training protects the joints you did not replace.
A new joint gives you the chance to move well again, and rehabilitation delivers it. SportsMed therapists follow your surgeon’s protocol, track progress objectively, and keep you moving toward the activities you miss.
Book an appointmentor find your nearest clinic.Reviewed by the SportsMed Physical Therapy clinical team. Last updated: August 2026.