James, W V <br/><br/>
The Pringle and Kirk four-bar crossed linkage and the "safety-knee".  [electronic resource] 

 -  Prosthetics and orthotics international  Apr 1986 
 - 23-6 p.  digital 
<br/><br/> Publication Type: Biography; Historical Article; Journal Article; Portrait 
<br/><br/><label>ISSN: </label>0309-3646 
<br/><br/><label>Standard No.: </label>10.3109/03093648609103075  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arm<br/>Artificial Limbs--history<br/>History, 20th Century<br/>Knee Prosthesis--history<br/>Northern Ireland<br/>Prosthesis Design