Gap balancing technique is a surgical method used to “balance” the soft tissues around the knee during knee replacement. It focuses on making the joint space (the “gap”) even and stable in both knee straightening and bending. It is most commonly discussed in total knee arthroplasty (total knee replacement). The goal is a knee that feels stable and moves smoothly after implants are placed.

Mechanical alignment TKA is a way of positioning knee replacement components to create a “neutral” straight leg alignment. It aims to line up the thigh bone (femur) and shin bone (tibia) so body weight passes through the center of the knee. It is commonly discussed in total knee arthroplasty (TKA), also called total knee replacement, especially for knee arthritis. It is one of several alignment philosophies surgeons may use when planning and performing TKA.

Kinematic alignment TKA is an approach to total knee arthroplasty (TKA), also called total knee replacement. It aims to position knee implant components to match a person’s pre-arthritis knee anatomy and motion patterns. It is most commonly used in surgical planning and execution for knee replacement in arthritis. It is one of several alignment philosophies surgeons may choose from.

A Rotating hinge knee is a type of knee replacement implant designed for complex knee instability. It acts like a hinge for bending and straightening while also allowing controlled rotation. It is most commonly used in revision knee replacement and selected difficult primary cases.

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CCK most commonly refers to a **constrained condylar knee** design used in knee replacement surgery. It is a **semi-constrained total knee arthroplasty (TKA) implant** intended to improve stability. CCK is typically used in **complex primary** knee replacements and **revision** (repeat) knee replacements. It is most relevant when a standard implant may not provide enough support due to ligament or bone problems.

Constrained condylar knee is a type of knee replacement implant design. It adds extra mechanical stability compared with standard total knee implants. It is most commonly used in complex primary total knee arthroplasty and revision knee replacement. Its goal is to help the knee stay aligned and stable when ligaments or bone support are limited.

CR knee most commonly means a **cruciate-retaining** knee replacement design. It is used in **total knee arthroplasty (knee replacement)** to preserve the **posterior cruciate ligament (PCL)**. The goal is to replace worn joint surfaces while keeping part of the knee’s native ligament system. You will see CR knee discussed in orthopedic surgery notes, implant catalogs, and knee replacement planning.

A Cruciate-retaining knee is a type of total knee replacement design that keeps the posterior cruciate ligament (PCL) intact. It is used to replace worn joint surfaces while preserving one of the knee’s central stabilizing ligaments. It is most commonly discussed in the context of total knee arthroplasty (TKA) for arthritis-related pain and stiffness. It is one option among several implant designs chosen to match a patient’s anatomy and ligament function.

PS knee most commonly refers to a **posterior-stabilized (PS) total knee replacement design**. It is a type of knee implant used in **total knee arthroplasty (TKA)** to help stabilize the joint. In simple terms, it uses a built-in mechanical feature to replace the function of a key ligament. It is commonly discussed in orthopedic surgery planning for knee arthritis and complex knee instability.