PELl/IC LIMBS. 89 



the medial epicondyle of the femur and passes distadto the lateral 

 tuberosity of the tibia ; part of it passes one to one and a half 

 centimeters distad of the tuberosity to be attached to a rough 

 ridge on the side of the tibia. 



(3) CRUCIAL LIGAMENTS. There are two of these also. 

 The ligamentum cruciatum anterius, or anterior crucial liga- 

 ment (Fig. 60, g\ Fig. 61, <:), is a thick, strong ligament which 

 begins on the dorsal part of the proximal end of the tibia nearer 

 the medial side (Fig. 60, g), and passes ventrad and proxi- 



FIG. 60. KNEE-JOINT, FROM THE FIG. 61. KNEE-JOINT, FROM THE 



DORSAL OR PATELLAR SIDE. VENTRAL OR FLEXOR SIDE. 



Fig. 60. The patella has been removed. I, femur; 2. tibia; 3, fibula, a, 

 patellar surface of femur; b. tubercle for attachment of ligamentum patellae; f, medial 

 meniscus; d, lateral meniscus; e, f, ligaments of the menisci; g, ligamentum crucia- 

 tum anterius; //, ligamentum cruciatum posterius; t, ligamentum collaterale tibiale; 

 j, ligamentum collaterale fibulare. 



Fig. 61. The capsule of the joint has been opened. I. femur; 2, tibia (fibula 

 not shown); 3, sesamoid bone in lateral head of M. gastrocnemius ; 4, sesamoid in 

 medial head of M. gastrocnemius; 5? tendon of M. popliteus, with sesamoid bone; 

 6, 7, lateral and medial condyles of the femur, with the intercondyloid notch between 

 them; 8, 9. lateral and medial condyles of the tibia, with the popliteal notch between 

 them; , 6, medial and lateral menisci; c, ligamentum cruciatum anterius; d, liga- 

 mentum cruciatum posterius; e, f, ligaments of the lateral meniscus; g, ligamentum 

 collaterale tibiale. 



mad, between the ends of the two bones forming the joint, into 

 the intercondyloid fossa of the femur, and becomes attached to 

 the medial surface of the lateral condyle of the femur (Fig. 

 61, <:). It is composed of two partially separated bands, form- 

 ing a slight angle with one another. It is crossed near its 

 dorsal and ventral ends by two of the ligaments of the menisci. 

 The ligamentum cruciatum posterius, or posterior crucial liga- 



