3^ 
A Description of all the 
Sea. VII. 
When the tumor of the knee is fmall, we readily difcover that the fluid is 
within the cavity of the joint ; by obferving, that when, after extending the leg 
in order to relax the tendon and ligament of the knee-pan, we prefs upon the 
foft fwelling, the knee-pan is lifted up, and the capfular ligament of the knee, 
under the patella, at the lides of the ftrong ligament which ties it to the tibia, 
is protruded. 
12. Cartilaginous bodies have been repeatedly obferved by furgeons with- 
in the cavity of the joint of the knee ; and a few fuch have been taken out af- 
ter cutting into the cavity of the joint (i). Of this complaint I have met 
with various inftances. In fome, the cartilaginous fubftance was fixed in its 
place •, in others, it flipped readily from one place of the cavity of the joint to 
another. In one cafe, three or four fuch moveable fubftances were diftin- 
I 
guifhable : in another, there were upwards of twenty fuch ; three of which, 
in my polTeflion, are delineated in Plate IX. fig. 2. 3. 4. Thefe were fo com- 
pacted within the joint of the knee, ^that they imprefTed each other nearly in 
the fame manner as concretions in the bladders of gall and urine are obferved 
to do. 
In like manner, I have feveral times obferved fmall cartilaginous bodies 
form within the burfe of the wrift after violent fprains : and in one cafe, 
which I examined with Mr Kilgour furgeon at Ormilloun, I found a flat 
piece of moveable cartilage within the burfa of the glutseus maximus, to which 
the attention of the patient had been direded by the pain it frequently gave 
him. 
I 
In another very remarkable cafe, I found upwards of fifty cartilaginous bo- 
dies within the burfa mucofa which is placed behind the tendon of the flexor 
pollicis 
I 
(A) Ste fig. I. and 2. of Tab. IX. which reprefent one fuch, cut out by Mr F. Dewar furgeon in 
Edinburgh. 
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