The strain caused by trying to wrench loose the mechanical leg must have cracked the hydroseal at the socket joint!
The articular interface of the hip is a simple ball and socket joint.
Hip resurfacing removes less bone than a hip replacement and maintains a better ball and socket joint.
The legs were attached to the disk at the top by a complex series of socket joints, enabling them to swivel rapidly at many angles.
Garrovick was right, the arm had come out of its socket joint at the shoulder and would have to be reset.
These muscles and tendons hold the arm in its "ball and socket" joint and help the shoulder to rotate.
In total hip replacement the generally accepted explanation for osteolysis involves wear particles (worn off the contact surface of the artificial ball and socket joint).
Normal spigot and socket joints do not allow direct metal to metal contact with all forces being transmitted through the elastomeric seal.
Cut through the skin and twist the leg slightly to remove the leg bone from the socket joint.
Right, this red thing here is just the lining of the socket joint, right is that clear?