INFERIOR EXTREMITY 



side of the patella and ligamentum patellae, in order that the common 

 extensor tendon and the patella may be thrown distally over the proximal 

 end of the tibia. The joint is now opened from the front, and the parts in 

 the interior may be observed. 



Tendon of adduct 

 magnus muscle (cut) 



Medial head of gas- 

 trocnemius (cut) 



jpliteal 

 igament 



Kursa beneath tendon 

 of semimembranosus 



Tendon of semimem- 

 branosus muscle (cut) 



Oblique popliteal liga- 

 ment 



Tibial collateral 

 ligament 



Popliteal fascia 

 Popliteus muscle (cut) 



Popliteal surface of femur 



Plantaris muscle (cut) 



Lateral head 

 ' of gastro- 

 cnemius (cut) 



Fibular collateral 



ligament 



Fibular collateral 



ligament 



Popliteus 

 muscle (cut) 

 Biceps femoris 

 muscle (cut) 



Head of fibula 



Popliteal surface of tibia 



FIG. 1 1 6. The Knee-joint. Posterior view. 



Interior of the Joint. First note the great pad of soft fat 

 which is placed on the deep surface of the ligamentum patellae. 

 In vertical section this fatty mass is triangular in form (Fig. 117). 

 It is termed the infra-patellar pad, and it fills up the interval 

 between the patella, femur, and tibia, and adapts itself to 

 the varied forms which this recess adopts in the different 

 movements of the joint. It is separated from the interior 

 of the joint by a covering of synovial membrane, and from 

 its surface a band of this membrane extends posteriorly and 

 proximally to the anterior margin of the intercondylar fossa 



