DISSECTION OF THE LOWER EXTREMITY 



(/) Ligament of the patella (Lig. patellae}. 



(fa) Retinaculum patellae mediale. 



(fb) Retinaculum patellae laterale. 



181 



Fie. 73. 



A. genu sup. lat. 



A. genu inf. lat. .. 

 A. rec. tib. post. 



V 



Ramus flb. A. tib. post. - 



A. genu suprema 



..A. genu sup. med. 



....A. genu inf. med. 

 -A. rec. tib. ant. 



A. tibialis anterior 



Arterial anastomosis about the knee. (After Poirier et Charpy, 

 Traite d'Anat hum., Paris, 1901, 2 ed., t. ii. p. 831, Fig. 449.) 



Make a vertical incision into the joint on either side of the 

 patella and ligamentum patellae. The common extensor ten- 

 don and the patella should now be thrown downward and the 

 following internal structures studied : 



(g) Lateral meniscus (meniscus lateralis) (0. T. external semilunar fibro- 



cartilage ) . 

 (h) Medial meniscus (meniscus medialis) (0. T. internal semilunar fibro- 



cartilage). 



(i) Transverse ligament of the knee (Lig. transfer sum genu). 

 (j) Crucial ligaments of the knee (Ligg. cruciata genu). 



(ja) Anterior crucial ligament (Lig. cruciatum anterius). 



(jb) Posterior crucial ligament (Lig. mirintinu postrriii*). 

 (k) Patellar synovial fold (plica synovialis patellaris) (0. T. ligamentum 



mncosum ) . 



What is the significance of this fold? 

 (0 Alar folds (plicae alares) (0. T. ligamenta alaria). 



