36 



HANDBOOK OF ANATOMY 



METACARPO AND INTERPHALANGEAL JOINTS OF FOUR 

 INNER DIGITS Continued. 



The Deep Fascia of the shoulder and upper limb is attached 

 to the clavicle, acrornion, and spine of scapula. It encases all 

 the muscles, and is continuous with the deep fascia of the back 

 and the axilla ; it is then continued down the arm,, covering all 

 the muscles, and at the elbow sends in processes called inter- 

 muscular septa, which separate the muscles of the front of the 

 arm from those of the back, also affording additional surface for 

 the origins of muscles. In front of the elbow it is attached to 

 the condyles of the humerus and olecranon process of the ulna, 

 and covers in the antecubital fossa, and receives a crescent- 

 shaped expansion from the tendon of the biceps called the 

 bicipital fascia ; it is continued down the forearm, closely invest- 

 ing the muscles and sending septa between them. At the wrist, 

 on both dorsal and ventral surfaces, there are bands of strong 

 transverse fibres to hold down the tendons, called respectively, 

 posterior and anterior annular ligaments of the wrist-joint. 

 The deep fascia then invests the muscles of the hand forming 

 anteriorly a particularly strong triangular piece the palmar 

 fascia which sends four processes to be inserted into the digital 

 sheaths. 



