Joint replacement surgery is commonly considered when severe arthritis, injury, or another degenerative condition causes ongoing pain and loss of mobility that no longer improves with conservative treatment. Although the phrase “joint replacement” may sound as though an entire joint is removed and exchanged, the procedure is more precise. Surgeons typically remove damaged bone and cartilage, reshape the affected surfaces, and place artificial components designed to restore smoother movement.
Full Circle Orthopedics, led by Dr. Robert Donnelly and serving patients in Clearwater and Palm Harbor, Florida, provides educational information to help individuals better understand orthopedic procedures. Learning what happens during joint replacement surgery can reduce uncertainty and help patients prepare for discussions with their surgeon, anesthesia team, physical therapist, and other healthcare professionals involved in their care.
Understanding the Purpose of Joint Replacement
Joint replacement surgery, also called arthroplasty, is intended to reduce pain and improve function in a joint that has become severely damaged. Osteoarthritis is one of the most common reasons for surgery, but joint replacement may also be considered for rheumatoid arthritis, post-traumatic arthritis, avascular necrosis, complex fractures, or other conditions that permanently affect the joint surfaces.
The hips, knees, and shoulders are among the joints most frequently replaced. Procedures may include Total Hip Replacement, Total Knee Replacement, Partial Knee Replacement, or Total Shoulder Replacement. Although these procedures follow similar principles, the surgical approach, implant design, rehabilitation program, and expected recovery vary according to the joint being treated.
Joint replacement is generally not recommended solely because an X-ray shows arthritis. Surgeons also consider pain severity, physical limitations, overall health, activity goals, and the response to nonsurgical treatments. The decision is usually made after patients understand the benefits, risks, alternatives, and rehabilitation requirements associated with surgery.
Evaluating the Joint Before Surgery
The process begins with a detailed orthopedic evaluation. The surgeon reviews the patient’s symptoms, medical history, previous injuries, medications, and past treatments. A physical examination may assess joint motion, stability, alignment, strength, walking ability, and the specific movements that cause discomfort.
Imaging is used to determine the location and severity of joint damage. Standard X-rays can reveal cartilage loss, narrowed joint spaces, bone spurs, deformity, and other arthritic changes. In certain cases, magnetic resonance imaging, computed tomography, or other studies may provide additional information about the bones and surrounding soft tissues.
The surgeon uses these findings to determine whether a total or partial replacement may be appropriate. In a total replacement, the major damaged surfaces of the joint are resurfaced or replaced. A partial replacement treats only a specific damaged compartment or structure while preserving more of the natural joint.
Completing Preoperative Medical Preparation
Before surgery, patients usually complete a preoperative medical evaluation to identify health conditions that could affect anesthesia, healing, or recovery. This assessment may include blood tests, an electrocardiogram, chest imaging, or additional testing based on the patient’s age and medical history.
Medications are carefully reviewed. Some prescriptions, over-the-counter medicines, supplements, and blood-thinning products may need to be adjusted before surgery. Patients should never stop prescribed medication without instructions from the appropriate healthcare provider.
Health optimization may be recommended before the procedure. Controlling blood sugar, improving nutrition, stopping tobacco use, treating infections, and managing blood pressure can reduce the likelihood of complications. Patients may also be asked to complete dental or medical treatment before surgery when an active infection is present.
Planning for Recovery at Home
Preparing the home before surgery can make the early recovery period safer and more manageable. Depending on the joint being replaced, patients may need a walker, cane, raised toilet seat, shower chair, reacher, or other assistive equipment.
Frequently used items should be moved to accessible locations so patients do not have to bend, climb, or reach unnecessarily. Loose rugs and electrical cords should be removed from walking paths to reduce fall risk. Arrangements may also be needed for transportation, meals, household tasks, pet care, and assistance during the first days or weeks.
Some patients participate in preoperative physical therapy or educational classes. These programs may teach exercises, safe transfer techniques, walking with an assistive device, incision-care basics, and strategies for navigating stairs after surgery.
Arriving on the Day of the Procedure
On the day of surgery, the patient arrives at the hospital or surgical center and completes the admission process. Members of the care team confirm the patient’s identity, procedure, surgical site, allergies, medications, and medical history. An intravenous line is placed so fluids and medications can be administered.
The surgeon and anesthesia professional usually meet with the patient before the operation. This is an opportunity to review the plan and answer final questions. The surgical site may be marked as part of standard safety protocols.
Patients are then taken to the operating room, where monitoring equipment is used to track heart rate, blood pressure, breathing, oxygen levels, and other vital signs throughout the procedure. The operating room team follows strict sterile techniques to reduce infection risk.
Choosing the Appropriate Anesthesia
Joint replacement may be performed under general anesthesia, regional anesthesia, or a combination of techniques. General anesthesia places the patient in a sleep-like state throughout surgery. Regional anesthesia numbs a larger area of the body while sedation may be used to help the patient remain relaxed and comfortable.
For hip and knee procedures, spinal anesthesia is frequently considered. Nerve blocks may also be used to provide pain relief during the first hours after surgery. The best approach depends on the type of operation, the patient’s health, personal preferences, and the anesthesia team’s assessment.
Anesthesia planning is individualized. The anesthesia professional reviews previous reactions, allergies, heart or lung conditions, sleep apnea, and other relevant factors before recommending a plan.
Accessing the Damaged Joint
Once anesthesia has taken effect, the surgical area is cleaned and covered with sterile drapes. The surgeon makes an incision positioned according to the joint and surgical approach being used.
The tissues surrounding the joint are carefully separated or moved aside to provide access while preserving important muscles, tendons, nerves, and blood vessels whenever possible. The exact technique differs for the hip, knee, and shoulder.
The surgeon then examines the joint surfaces and confirms the extent of damage. Although imaging provides detailed information before surgery, direct visualization allows the surgical team to make final decisions about bone preparation and implant placement.
Removing Damaged Bone and Cartilage
Specialized instruments are used to remove worn cartilage and a carefully measured amount of damaged bone. The purpose is not to remove the entire joint. Instead, the surgeon prepares the affected surfaces so the artificial components can fit securely and reproduce appropriate joint mechanics.
During knee replacement, damaged surfaces at the ends of the thighbone and shinbone are reshaped. The underside of the kneecap may also be resurfaced in selected cases. During hip replacement, the damaged femoral head is removed and the hip socket is prepared. In shoulder replacement, the worn humeral head and socket may be resurfaced or replaced depending on the procedure.
Preserving healthy bone and maintaining alignment are important goals. Precise cuts and measurements help balance the joint and provide stable movement after the implants are placed.
Positioning the Artificial Components
Joint replacement implants are commonly made from combinations of metal alloys, durable medical-grade plastics, and ceramic materials. The specific components depend on the joint, the patient’s anatomy, bone quality, and other clinical factors.
Implants may be secured with bone cement or placed using a cementless technique. Cemented implants use a medical-grade material to hold the component in position. Cementless implants often have textured or porous surfaces that allow bone to grow into or around the implant over time.
The surgeon may insert trial components before placing the final implants. These temporary pieces allow the surgical team to assess size, alignment, stability, leg length, tension, and range of motion. Once the appropriate fit is confirmed, the permanent components are inserted.
Testing the New Joint
After the implants are positioned, the surgeon moves the joint through an appropriate range of motion. This testing helps confirm that the replacement is stable and that the components move together as intended.
For knee surgery, the surgeon evaluates alignment, ligament balance, bending, and straightening. During hip replacement, leg length, stability, and the risk of dislocation are assessed. Shoulder replacement testing focuses on stability, soft-tissue balance, and the ability of the implant to move smoothly.
Additional adjustments may be made before the procedure is completed. Careful testing is intended to support functional movement while reducing unnecessary stress on the implant and surrounding tissues.
Closing and Dressing the Incision
When the surgical team is satisfied with the implant position, the area is cleaned and inspected. Bleeding is controlled, and the tissues are repaired in layers. The incision may be closed with sutures, staples, surgical adhesive, or a combination of closure methods.
A sterile dressing is placed over the incision. Some dressings are designed to remain in place for several days, while others require earlier changes. Patients receive specific instructions about keeping the incision clean and dry.
The length of the operation depends on the joint, the surgical approach, the complexity of the condition, and whether any additional procedures are needed. After surgery, the patient is transferred to a recovery area.
Waking Up After Surgery
In the recovery area, nurses monitor breathing, circulation, pain, alertness, and the surgical site as the anesthesia wears off. Patients may receive medication for pain, nausea, and inflammation. The care team also checks movement, sensation, and blood flow in the affected limb.
Temporary swelling, soreness, fatigue, and stiffness are expected. Some patients may have a drain, urinary catheter, compression devices, or supplemental oxygen, although these are not necessary in every case.
Pain management often uses several methods rather than relying on a single medication. This may include acetaminophen, anti-inflammatory medication, nerve blocks, ice, elevation, and carefully prescribed opioid medication when appropriate.
Beginning Movement and Physical Therapy
Movement usually begins soon after joint replacement. For many hip and knee patients, standing and walking with assistance may begin on the day of surgery or the following day. Early movement helps reduce stiffness, support circulation, and lower the risk of blood clots.
A physical therapist teaches patients how to get in and out of bed, use a walker or cane, and perform early exercises safely. The initial goals are often modest, such as walking a short distance, transferring to a chair, and completing basic movements without placing excessive stress on the new joint.
Shoulder replacement rehabilitation follows a different progression. The arm may initially be supported in a sling, and movement may be limited to protect healing tissues. Therapy typically advances gradually based on the surgical technique and the condition of the muscles and tendons.
Preventing Early Complications
The care team takes several precautions to reduce postoperative complications. Antibiotics may be administered around the time of surgery to lower infection risk. Blood-thinning medication, compression devices, ankle-pumping exercises, and early walking may be used to help prevent blood clots.
Patients are monitored for changes in the incision, circulation, breathing, and pain level. Good blood sugar control and careful wound care are particularly important for individuals with diabetes or other conditions that may affect healing.
Before leaving the surgical facility, patients receive instructions about warning signs that require medical attention. These may include increasing redness, drainage, fever, sudden shortness of breath, chest pain, calf swelling, uncontrolled pain, or a sudden change in joint function.
Transitioning Home or to Rehabilitation
The timing of discharge depends on the procedure, the patient’s health, mobility, home support, and ability to complete basic tasks safely. Some patients return home on the day of surgery, while others remain in the hospital overnight or longer.
Most patients recover at home with outpatient or home-based physical therapy. A short stay in a rehabilitation facility may be recommended when additional assistance is needed, although this decision is individualized.
Discharge goals may include walking safely with an assistive device, managing pain with oral medication, eating and drinking normally, using the bathroom, and understanding medication and incision-care instructions.
Progressing Through Rehabilitation
Rehabilitation is essential because surgery changes the joint surfaces, but it does not immediately restore muscle strength, balance, flexibility, or endurance. These abilities return gradually with healing and repeated practice.
Therapy programs differ according to the replaced joint. Knee rehabilitation often emphasizes bending and straightening the knee, strengthening the thigh muscles, and improving walking. Hip therapy may focus on walking mechanics, strength, balance, and safe movement. Shoulder rehabilitation progresses from protected motion to active movement and strengthening.
Patients should follow the prescribed program rather than advancing activities too quickly. Excessive activity can increase pain and swelling, while too little movement may contribute to stiffness and weakness. Regular communication with the surgeon and therapist helps keep recovery on track.
Returning to Normal Activities
Recovery timelines vary. Many patients gradually resume basic household activities within the first several weeks, but complete healing and strength development may continue for months.
Driving, work, exercise, and recreational activities are resumed at different times depending on the joint, surgical side, medication use, occupation, and progress in therapy. Patients should receive clearance before returning to activities that require quick reactions, heavy lifting, or repetitive joint stress.
Low-impact activities such as walking, swimming, cycling, and certain forms of strength training are often encouraged after recovery. High-impact sports and activities involving collision, jumping, or repetitive heavy loading may be discouraged to reduce implant wear or injury risk.
Understanding Long-Term Implant Care
Modern joint replacements are designed to function for many years, but they are not indestructible. Implant longevity depends on the material, surgical positioning, activity level, body weight, bone quality, and other factors.
Maintaining a healthy weight and staying active can reduce unnecessary stress on the replacement while supporting muscle strength. Patients should attend recommended follow-up appointments, even when the joint feels comfortable. Imaging may be used periodically to monitor implant position, wear, and the surrounding bone.
People researching arthroplasty may also review general information about Joint Replacement to understand how total and partial procedures differ. The most appropriate approach depends on the location and severity of the damage rather than on a single standard treatment.
Preparing for an Informed Surgical Decision
Joint replacement surgery involves much more than placing an artificial joint. It includes a careful evaluation, medical preparation, detailed surgical planning, precise removal of damaged tissue, implant positioning, complication prevention, and a structured rehabilitation program.
Full Circle Orthopedics and Dr. Robert Donnelly help educate patients in Clearwater and Palm Harbor, Florida about orthopedic conditions and available treatment approaches. Understanding each stage of a joint replacement procedure can help patients prepare realistic questions, participate actively in recovery, and make informed decisions about their long-term mobility and joint health.
Resources
American Academy of Orthopaedic Surgeons. (2023). Total Joint Replacement. OrthoInfo.
National Institute of Arthritis and Musculoskeletal and Skin Diseases. (2023). Joint Replacement Surgery. National Institutes of Health.
Agency for Healthcare Research and Quality. (2022). Joint Replacement Surgery. Effective Health Care Program.