500 Diseases of Joints. 



course. It adhered along its whole course to the internal 

 surface of the capsule, and was indeed reduced to a few fibrous 

 and cellular-looking threads, Avhich could be traced with diffi- 

 culty. The tendon of the biceps as high as its passage into 

 the groove of the humerus, and as high as that point where 

 the synovial capsule is reflected upon it from off the iibrous 

 capsular ligament could be readily traced; but here the tendon 

 disappeared; a few of its fibres, assuming a cellular appearance,, 

 adhered to the margins of the groove in the bone, and a certain 

 number might also be traced from the termination of the 

 groove closely adhering to the synovial membrane, and almost 

 identified with it, as far as the usual insertion of this tendon 

 into the upper portion of the fibro-cartilaginous ring of the 

 glenoid cavity. Since the occurrence of this case the donor 

 has met with three others, closely resembling each other. (See a 

 paper on the subject in the London Medical Gazette, No. 14, 

 Saturday, March 8, 1828.) E. Stanley, Esq., in the same 

 periodical for December 6, 182S, states that he has since remarked 

 three similar cases. He seems to be of opinion, and gives some 

 interesting cases to show, that the tendon of the biceps can be 

 ruptured by certain forcible movements of the arm, without 

 being accompanied with the dislocation of the humerus. The 

 symptoms are severe, and the time required for the reparation 

 of the injury much more considerable than in the case of a 

 common bruise. Mr Stanley further states that in two cases 

 of dislocation of the humerus, which he had an opportunity of 

 examining, he found the tendon of the biceps entire." 



It is now known, as the previous four specimens illustrate, 

 that these are not cases of rupture of the biceps tendon, but of 

 its absorption in the progress of arthritis deformans. 



The central portion of cartilage on the head of the humerus 

 is worn away, and round the margin there is some enlargement 

 and irregular outgrowth of bone. There is some irregularity 

 of the cartilage at the lower part of the glenoid cavity. 



G. C. 1121. 



Presented by ^. Kxox, F.R.C.S.E. 



