Tibial slope is the tilt of the top of the shinbone (tibia) when viewed from the side. It describes how the tibial plateau (the tibia’s joint surface) angles relative to the bone’s shaft. It is commonly measured on knee X-rays and MRI scans. Clinicians consider it when evaluating ligament injuries and planning certain knee surgeries.

Patellar button sizing is the process of selecting the most appropriate size and thickness of a patellar implant (“button”). It is most commonly discussed during total knee arthroplasty (total knee replacement) when the patella is resurfaced. The goal is to match the implant to the patient’s patella and overall knee mechanics. It is a surgical decision step rather than a stand-alone treatment.

Tibial baseplate sizing is the process of choosing the correct size of the tibial baseplate implant used in knee replacement surgery. The tibial baseplate is the metal platform that sits on top of the shinbone (tibia) and supports the plastic bearing surface. Sizing aims to match the implant to a person’s bone shape to help the knee move smoothly and feel stable. It is most commonly discussed in total knee arthroplasty (total knee replacement) and revision knee replacement planning.

Femoral component sizing is the process of selecting the appropriate size and fit of the femoral implant used in knee replacement surgery. It focuses on matching the implant to the patient’s distal femur (the end of the thighbone that forms the top of the knee joint). It is commonly used in total knee arthroplasty (TKA) and, in some cases, partial knee replacement procedures. The goal is to help the artificial joint move smoothly and feel stable during everyday activities.

Periprosthetic fracture after TKA means a bone break that happens around a knee replacement implant. It usually involves the femur (thighbone), tibia (shinbone), or patella (kneecap) near the prosthesis. It is most commonly discussed in orthopedic clinics, emergency settings, and post-surgical follow-ups. The term helps clinicians describe the injury and plan treatment based on implant stability and bone quality.

MUA knee means **manipulation under anesthesia** of the knee joint. It is a technique used to improve knee motion when stiffness limits bending or straightening. It is most commonly discussed after **knee surgery**, especially knee replacement, but can be used in other settings. The goal is to address motion loss related to scar tissue and tight joint structures.

Manipulation under anesthesia is a procedure used to improve joint motion while a patient is under anesthesia. It is most commonly used when a knee becomes stiff after surgery or injury. The clinician gently moves the joint through controlled ranges to reduce stiffness. It is often discussed in the context of knee arthrofibrosis (excess scar tissue and capsular tightness).

Arthrofibrosis after TKA is abnormal scar-tissue formation that leads to knee stiffness after total knee arthroplasty (TKA). It typically presents as reduced range of motion, tightness, and difficulty bending or straightening the knee. The term is commonly used by orthopedic surgeons and rehabilitation clinicians when post-TKA stiffness is greater than expected. It describes a complication pattern rather than a single test, device, or medication.

Stiff knee after TKA describes limited knee motion after total knee arthroplasty (knee replacement). In plain terms, the knee does not bend or straighten as expected after surgery. It is a clinical term used in orthopedics and physical therapy to guide evaluation and next steps. It can be associated with discomfort, swelling, scar tissue, or mechanical factors around the implant.

Instability after TKA means the knee feels loose, gives way, or does not feel reliably supported after a total knee arthroplasty (knee replacement). It is a clinical term used by orthopedic teams to describe a pattern of symptoms and exam findings, not a single disease. It can occur soon after surgery or develop gradually months to years later. The term is commonly used in clinic notes, physical therapy documentation, and revision knee replacement evaluations.