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Informed Consent for Total Knee Arthroplasty (TKA)
Patient Informed Consent Documentation
Patient and Surgical Information
Nature and Purpose of the Procedure
Total knee arthroplasty (TKA) is a surgical procedure performed under spinal or general anesthesia to resurface the damaged articular surfaces of the knee joint damaged by osteoarthritis, rheumatoid arthritis, post-traumatic arthritis, or other degenerative conditions. A longitudinal incision is made over the anterior knee, and the joint is exposed. The distal femur and proximal tibia are precisely cut using resection guides and surgical jigs to accommodate metal femoral and tibial components that replicate the normal joint surfaces. A polyethylene (plastic) bearing is placed between the metal components to allow smooth, low-friction movement. A patellar button may also be implanted on the undersurface of the kneecap. The components are secured using bone cement (polymethylmethacrylate) or a press-fit porous coating that allows bone ingrowth. A surgical drain may be placed, and the incision is closed in layers. The procedure typically takes 1.5 to 2.5 hours.
Material Risks and Potential Complications
Deep vein thrombosis (DVT) in the calf or thigh, occurring in 40 to 60 percent without prophylaxis; reduced to approximately 2 to 5 percent with anticoagulant prophylaxis and early mobilization. Pulmonary embolism (PE) is a rare but potentially fatal complication.
Periprosthetic joint infection (PJI): superficial wound infection occurs in 1 to 2 percent; deep infection in 1 to 2 percent and may require prosthesis removal, prolonged antibiotic therapy, and staged revision surgery.
Arthrofibrosis and stiffness: persistent limitation of range of motion (ROM) below 90 degrees of flexion in 5 to 10 percent of patients, potentially requiring manipulation under anesthesia or revision surgery.
Aseptic loosening: gradual mechanical failure of the bone-cement or bone-implant interface over years, eventually requiring revision arthroplasty. Average implant survival is 15 to 25 years.
Nerve injury: injury to the common peroneal nerve causing foot drop (approximately 0.3 to 1 percent) and injury to the saphenous nerve branches causing permanent lateral knee numbness.
Vascular injury: injury to the popliteal artery or vein, which may require emergency vascular repair.
Persistent pain or functional dissatisfaction reported in 10 to 20 percent of patients despite technically successful surgery, related to pre-existing central sensitization, mental health factors, or unrealistic expectations.
General anesthesia risks including aspiration pneumonia, cardiovascular events, and adverse drug reactions, to be reviewed separately by the anesthesia team.
Rehabilitation and Recovery Commitment
The success of total knee replacement is substantially dependent on the patient's commitment to postoperative rehabilitation. Patients are expected to begin weight-bearing with a walker on the day of or the day following surgery. Physical therapy focused on quadriceps activation, range of motion exercises, and progressive ambulation begins within 24 hours. Formal outpatient or home physiotherapy continues for a minimum of 6 to 12 weeks. Failure to comply with the prescribed rehabilitation program significantly increases the risk of stiffness, poor functional outcomes, and the need for manipulation under anesthesia. Patients should expect full functional recovery to take 3 to 12 months.
Blood Clot Prevention Protocol
Pharmacological thromboprophylaxis will be prescribed following surgery. Options include aspirin 325 mg twice daily, enoxaparin (low molecular weight heparin) 40 mg subcutaneously daily, rivaroxaban 10 mg daily, or apixaban 2.5 mg twice daily, continuing for 14 to 35 days depending on the patient's individual risk profile. Sequential compression devices (SCDs) will be applied intraoperatively and continued until the patient is fully ambulatory. Patients are instructed to report any calf pain, limb swelling, chest pain, or breathlessness immediately.
Surgical Alternatives
Conservative management: weight loss, physiotherapy, activity modification, analgesics (acetaminophen, NSAIDs), and intra-articular corticosteroid or hyaluronic acid injections for mild to moderate disease.
Partial (unicompartmental) knee replacement: resurfacing of only the medial, lateral, or patellofemoral compartment for disease confined to a single compartment; associated with faster recovery but higher revision rates.
High tibial osteotomy (HTO): realignment surgery to shift mechanical load away from the damaged compartment in younger patients with medial compartment arthritis and varus deformity.
Knee arthroscopy with debridement: limited evidence supports this for mechanical symptoms; not appropriate for advanced osteoarthritis.
Expected Benefits
The primary expected benefit of total knee arthroplasty is substantial and durable relief of knee pain that has not responded adequately to conservative measures, combined with improved functional capacity and quality of life. Studies consistently show that 80 to 90 percent of patients achieve good to excellent pain relief and restoration of daily activity function. The procedure aims to allow return to low-impact activities, improved sleep, reduced reliance on pain medications, and correction of deformity where applicable.
Operative Site Verification (Wrong-Site Prevention)
To comply with The Joint Commission National Patient Safety Goal 01.01.01 and prevent wrong-site surgery, I confirm that the operative limb has been discussed with me and will be marked by the surgeon prior to the procedure. I have verified with my surgeon that the intended operative side is documented above. I understand that I will be asked to confirm the operative side on the day of surgery during the pre-operative timeout, and I am expected to participate in this verification process.
Joint Replacement Registry Participation
Your surgery data may be submitted to the American Joint Replacement Registry (AJRR) or an equivalent national registry. Registry participation enables population-level monitoring of implant performance, complication rates, and long-term outcomes to improve care quality. Data submitted is de-identified and protected under research privacy regulations. You may opt out of registry participation by notifying your surgeon or the facility registration team before your procedure.
Right to Refuse or Withdraw Consent
You have the right to refuse this procedure or withdraw your consent at any time before the procedure begins without penalty or adverse effect on your ongoing medical care. Your surgeon will discuss non-operative alternatives with you if you choose not to proceed.
Questions and Understanding Confirmation
I confirm that I have had the opportunity to read this consent form carefully and ask questions of my surgeon. All my questions have been answered to my satisfaction. I understand the rehabilitation commitment required and the realistic timeline for recovery. I believe I am making an informed and voluntary decision.
Language Access and Interpreter Services
If English is not your primary language or if you require assistance communicating, a qualified medical interpreter is available to you at no cost. Please notify your care team if you require interpreter services before signing this document.
Copy of Consent Acknowledgment
I acknowledge that I have been offered a signed copy of this informed consent form for my own records. I understand I may request an additional copy at any time from the facility or clinical records department.
Patient Authorization
I have been informed of the total knee replacement procedure, its expected benefits, the material risks listed above, the rehabilitation commitment required, and available alternatives. I understand that implant longevity is not guaranteed and that revision surgery may be required in the future. I consent to proceed with total knee arthroplasty on the operative side indicated above and authorize the surgeon and team to take all necessary measures to ensure patient safety.
Signatures and Verification
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How to Use the Digital Total Knee Replacement Consent Template
This digital total knee replacement consent template provides a customizable operational layout for medical clinics. It features checkboxes, patient identifiers, and date stamps that practice managers can edit client-side.
Using ConsentCollect's drag-and-drop form builder, administrators can import this document schema, modify fields, and add specific surgical disclosures. The resulting form is optimized for digital signature workflows and secure client-side database mapping.
Once updated with your clinic's logo and clinical specifications, this template can be used to generate printable PDFs or integrated directly into digital patient intake screens.
❓ Frequently Asked Questions
How do I customize this digital total knee replacement consent template?
You can fully edit and customize this layout using our Free Advanced Form Builder. Click the "Customize in Free Builder" button to open this form in the public builder canvas. From there, you can drag and drop new fields, modify the placeholder text, add your clinic's branding, and configure the signature layout without signing up for a premium account.
What administrative fields are included in this total knee replacement form template?
This template provides the structural layout required for standard clinical documentation intake. It includes structured data blocks for patient registration and identification details, physician and primary operator variables, customizable disclosure and procedural risk checkboxes, and digital signature verification and timestamp lines.
Can anyone use the Free Advanced Form Builder to edit this template?
Yes. Our advanced form builder is completely free and open to the public. Anyone, including freelance medical writers, healthcare administrative staff, clinical operations managers, or students, can import this template to test layouts, build workflows, or export the structural code for their own projects.
Is this free template page providing clinical or legal medical advice?
No. This page hosts a structural document layout for administrative, operational, and software testing purposes only. Because medical regulations and procedural risk disclosures vary heavily by jurisdiction and facility, you must have your finished form reviewed by qualified legal counsel or a certified medical director before deploying it to actual patients.
How do I export or print my finished template once customized?
Once you have completed your adjustments inside the Free Advanced Form Builder, you can instantly export the customized layout as a high-resolution PDF document, print it for physical clinic signatures, or copy the underlying JSON structure for integration into other custom EHR or database configurations.
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