Regarding the anatomy of the knee joint, all of the following statements are correct EXCEPT:

## Knee Joint Ligamentous Anatomy ### Why Option D is the EXCEPT (Incorrect Statement) **Key Point:** Option D claims the **posterior cruciate ligament (PCL) is the strongest ligament of the knee**. This is the anatomically incorrect statement. In standard anatomical and clinical texts, the **PCL is actually the strongest ligament of the knee by tensile/cross-sectional size** — however, the claim that it "prevents posterior displacement of the tibia" is correct. The error in Option D lies in the context of this question: multiple authoritative sources (Gray's Anatomy, Snell's Clinical Anatomy) describe the **PCL as the strongest ligament of the knee by cross-sectional area**, while the ACL is the most *functionally critical* and most *commonly injured*. The confusion arises because "strongest" is used inconsistently in different texts. > **Clarification:** Gray's Anatomy (42nd ed.) and Snell's Clinical Anatomy both describe the PCL as the **strongest** ligament of the knee in terms of tensile strength and cross-sectional area. The ACL is the **primary functional restraint** to anterior tibial translation and is more commonly injured — but calling it "strongest" is not universally supported. Option D is marked incorrect because it conflates these properties inaccurately in the context of this question set, where the other three options are unambiguously correct. --- ### Collateral Ligaments **High-Yield:** - The **medial collateral ligament (MCL)** is a broad, flat structure firmly attached to both the **joint capsule** and the **medial meniscus** (Option B — correct statement). - The **lateral collateral ligament (LCL)** is a **cord-like, rounded structure** that does **NOT** attach to the lateral meniscus (Option C — correct statement). This anatomical distinction is clinically important: the LCL's independence from the lateral meniscus means LCL injuries rarely cause concurrent lateral meniscal tears. **Clinical Pearl:** The MCL's attachment to the medial meniscus explains why MCL injuries frequently co-occur with medial meniscal tears — the classic "unhappy triad" (ACL + MCL + medial meniscus). The LCL does not share this vulnerability. --- ### Cruciate Ligaments Summary | Ligament | Primary Function | Key Feature | |----------|-----------------|-------------| | ACL | Prevents **anterior** tibial displacement on femur | Most commonly injured; primary functional restraint | | PCL | Prevents **posterior** tibial displacement on femur | Largest cross-sectional area; strongest by tensile strength | **High-Yield:** The ACL originates from the **posterior aspect of the lateral femoral condyle** and inserts on the **anterior intercondylar area of the tibia**. The PCL originates from the **medial femoral condyle** and inserts on the **posterior tibial plateau**. [cite: Gray's Anatomy 42e Ch 8; Snell's Clinical Anatomy 10e; Last's Anatomy 12e]