What is the term for the condition characterized by knees that stick together, often due to an issue with the medial collateral ligament?

The condition where the knees stick together, typically due to an issue with the medial collateral ligament, is known as genu valgum. In genu valgum, often referred to as "knock knees," the knees angle in and touch each other while the ankles remain apart. This alignment can result from a variety of factors, including structural anomalies or ligament injuries.

In the context of ligament issues, the medial collateral ligament is critical to stabilizing the knee joint. When compromised, it can lead to altered knee alignment and contribute to the development of genu valgum. Understanding this condition is essential for recognizing how it affects mobility and identifying appropriate interventions or treatments.

In contrast, genu recurvatum refers to hyperextension of the knees, genu varum describes bowleggedness where the knees are apart when standing straight, and patellar dislocation involves the displacement of the kneecap from its normal position. Each of these conditions presents different mechanical issues and requires different approaches for management. Therefore, genu valgum is accurately characterized by the knee alignment where the knees stick together.