{HEAD ~ A longitudinal sleeve} has at least two radially spaced ligament contacting surfaces located in lateral opposition to {TAIL ~ a sleeve inner lumen} 
{ HEAD ~ A longitudinal sleeve } has at least two radially spaced ligament contacting surfaces located in lateral opposition to { TAIL ~ a sleeve inner lumen }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL