The Joint capsule is the soft-tissue envelope that surrounds a synovial joint, including the knee. It helps hold the joint together while still allowing controlled motion. It contains the synovial lining that supports joint lubrication and nutrition. Clinicians talk about the Joint capsule when assessing swelling, instability, stiffness, or injuries around a joint.

Synovial membrane is a thin, specialized lining found inside many joints, including the knee. It produces synovial fluid, which helps joints move smoothly. It also plays a role in joint nutrition and inflammation. Clinicians discuss it often when evaluating swelling, arthritis, or unexplained knee pain.

Synovium is the thin, living lining inside many joints, including the knee. It makes synovial fluid, which helps joints move smoothly. It also helps regulate the joint environment by supporting cartilage nutrition and clearing debris. Clinicians commonly discuss Synovium when evaluating joint swelling, inflammation, or unexplained knee pain.

Meniscocapsular junction is the area where the knee’s meniscus connects to the joint capsule. It is a normal anatomical attachment, not a device or medication. Clinicians use the term when discussing meniscus stability, injury patterns, and surgical repair. It is commonly referenced in MRI reports and arthroscopy findings.

Posterior horn meniscus refers to the back (posterior) segment of a knee meniscus. It is a normal anatomical structure that helps the knee bear weight and move smoothly. Clinicians commonly mention it when describing MRI findings, knee injuries, and arthritis-related changes. It is especially discussed because many common meniscal tears occur in the posterior region.

The Anterior horn meniscus is the front portion of a knee meniscus. It refers to the “anterior horn” of either the medial meniscus or the lateral meniscus. Clinicians use the term most often in MRI reports, exam notes, and arthroscopy findings. It helps describe where a meniscus tear, degeneration, or attachment problem is located.

Meniscal horn is the front or back “end” portion of a knee meniscus. It is most commonly referenced as the anterior horn or posterior horn of the medial or lateral meniscus. The term is used in MRI reports, orthopedic exams, and arthroscopy descriptions. It helps clinicians describe where a meniscal tear or degeneration is located.

Meniscal root refers to the attachment sites where each meniscus anchors to the top of the shinbone (tibia). These roots help the meniscus stay in position and work like a “hoop” to distribute load in the knee. The term is commonly used in MRI reports, orthopedic notes, and discussions of meniscal root tears and repairs. It is most often discussed when knee pain, swelling, or early arthritis changes appear after a meniscal injury.

The Lateral meniscus is a crescent-shaped pad of fibrocartilage inside the knee joint. It sits on the outer (lateral) side of the knee between the femur and the tibia. It helps the knee handle load, stay stable, and move smoothly. In clinics, it is commonly discussed when evaluating knee pain, swelling, clicking, or sports injuries.

The Medial meniscus is a crescent-shaped pad of fibrocartilage inside the knee joint. It sits on the inner (medial) side between the femur and tibia. It helps the knee absorb load and move smoothly during walking, squatting, and sports. It is commonly discussed when evaluating knee pain, swelling, catching, or locking.