High tibial osteotomy is a knee-alignment surgery that reshapes the upper tibia (shinbone) near the knee. It is commonly used to shift weight away from a worn or painful side of the knee joint. The goal is to reduce symptoms and improve function by changing how forces pass through the knee. It is most often discussed in the setting of one-sided (compartmental) knee arthritis or malalignment.

Cartilage repair is a set of treatments designed to address damage to joint cartilage. It aims to reduce symptoms and improve function by restoring or replacing injured cartilage surfaces. It is most commonly discussed for the knee, but it can apply to other joints as well. It may involve rehabilitation, injections, or surgery depending on the lesion and the patient.

Subchondroplasty is a minimally invasive orthopedic procedure used to treat certain painful problems in the bone just under joint cartilage. It is most commonly discussed in relation to the knee. It typically involves injecting a bone substitute material into areas of damaged subchondral bone. It is often performed alongside arthroscopy to evaluate the inside of the joint.

Biocartilage augmentation is a cartilage-repair technique that adds a cartilage-based scaffold to a joint surface defect. It is most commonly used in the knee to support treatment of small, focal areas of damaged articular cartilage. It is typically performed as an adjunct to a marrow-stimulation procedure (such as microfracture) during arthroscopy.

Chondral resurfacing is a group of treatments that aim to restore or replace damaged joint cartilage. It is most commonly discussed for the knee, especially after injury or wear-related cartilage breakdown. The goal is to improve the joint surface where cartilage has become rough, thinned, or missing. It is used in sports medicine and orthopedic practice to manage focal cartilage defects and related symptoms.

Chondroplasty is a surgical technique used to smooth and stabilize damaged joint cartilage. It is most commonly performed arthroscopically (through small incisions) in the knee. The goal is to reduce irritation from rough or unstable cartilage surfaces. It is often done during the same procedure as other knee arthroscopy treatments.

Matrix-induced ACI is a surgical cartilage repair technique that uses a patient’s own cartilage cells on a scaffold. It is commonly used for focal cartilage defects in the knee. The goal is to restore a smoother joint surface where cartilage has been damaged. It is typically discussed in sports medicine and orthopedic cartilage restoration care.

A Cartilage scaffold is a medical material designed to support new cartilage growth in a damaged joint. It acts like a temporary framework where repair tissue can form and mature. It is most commonly discussed in the context of focal cartilage injuries in the knee. It may be used alone or combined with cells or biologic treatments, depending on the case.

MACI stands for **matrix-induced autologous chondrocyte implantation**. It is a cartilage restoration technique used to treat certain **focal cartilage defects** in the knee. It uses a patient’s own cartilage cells that are grown and placed on a scaffold (a supportive matrix). It is most commonly used in orthopedic and sports medicine care for knee cartilage injuries.

ACI most commonly refers to **autologous chondrocyte implantation**, a cartilage repair technique. It uses a person’s own cartilage cells (chondrocytes) to help treat certain cartilage defects. ACI is most often discussed in **knee** care, especially in sports medicine and cartilage restoration clinics. It is typically considered when focal cartilage damage causes pain and limits activity.