THE KNEE.J01NT. 



167 



back is another band, the sliort external lateral ligament, the arrangement 

 of which is more variable ; it is often connected with the tendon of 

 the popliteus muscle, and occasionally terminates in the capsular 

 membrane. 



The posterior ligament is a flat fasciculus of fibres passing from 

 behind the inner tuberosity of the tibia upwards and outwards to the 

 external condyle"of the femur, and is in part continuous at its inner end 

 •with the tendon of the semimembranosus muscle. 



Fig. 149. 



Fig. 149, A. — Right Knee-Joint, from the inside and anteuiorly. (A.'T.) ^ 

 1, tendon of the rectus muscle near its insertion into the patella ; 2, insertion of the 

 vastus internus into the rectus tendon and side of the patella ; 3, ligamentum patelke 

 descending to the anterior tuberosity of the tibia ; 4, capsular fibres forming a lateral 

 ligament of the patella prolonged in part from the insertion of the vastus internus do^\^l- 

 wards towards the inner tuberosity of the tibia : 5, internal lateral ligament ; 6, tendon 

 of the semimembranosus muscle. (After Arnold.) 



Fig. 149, B. — Knke-Joint from behind. (A. T.) 



1, insertion of the tendon of adductor magnus ; 2, origin of the inner head of the 

 gastrocnemius muscle ; 3, outer head of the same ; 4, cord-like external lateral ligament ; 

 5, tendon of the popliteus muscle : a ligament descending from behind the outer condyle 

 of the femur is seen attached to this tendon below, and another descending from the 

 tendon is attached to the head of the fibula, constituting the short external lateral liga- 

 ment ; 6, part of internal lateral ligament ; 7, tendon of the semimembranosus muscle ; 

 8, posterior ligament of Winslow, spreading outwards from the tendon ; 9, expansion of 

 the popliteal fascia downwards from the same, represented as cut short ; 10, on the head 

 of fibula, marks the posterior superior tibio-fibular ligament; 11, upper piart of the 

 interosseous ligament, "nith the foramen above it for the anterior tibial artery. 



The ligamentum patellae is a strong flat tendinous band, attached 

 superiorly to the lower extremity of the patella, and the depression 

 beneath its articular surface, and inferiorly to the anterior tubercle of 



