Modular hip prosthesis

An implantable modular hip prosthesis that can be custom fitted to a particular patient by a surgeon prior to surgical insertion, comprising:

• (a) a hip prosthesis main body having a proximal upper end portion and a lower stem portion, a neck member extending from the main body and adapted to be coupled to a rounded joint head that is configured to engage the acetabulum;
• (b) said lower stem portion extending distally from the main body and terminating at the rounded tip and adapted for placement in the intramedullary canal of the patient's femur;
• (c) an elongated tubular sleeve terminating at opposite ends and having at least a portion of the sleeve hollowed and opening at one end portion thereof wherein the hollowed portion is configured for receipt of the lower stem portion;
• (d) an elongated connecting rod having attachment means at one end thereof for operatively coupling the sleeve to the main body;
• and
• (e) wherein the tubular stem extension sleeve is disposed over the lower stem portion and the connecting rod is inserted into the through bore and the attachment means is coupled to the tubular sleeve thereby forming a modular prosthesis that can be custom fitted to a particular patient prior to surgical insertion by interchanging sizes of the various components, and the sleeve is curved to conform to the shape of the intermedullary canal.

An implantable modular hip prosthesis, comprising:

• (a) a hip prosthesis main body having a proximal upper end portion and a lower stem portion, said proximal upper end portion including a neck member extending from the main body and adapted to be coupled to a joint head portion that is configured to engage the acetabulum portion of the joint, said lower stem portion extending distally from the main body and terminating at the rounded tip, and being adapted for placement in the intramedullary canal of the patient's femur;
• (b) an elongated tubular sleeve terminating at opposite ends and having a hollowed portion configured for receipt of the lower stem portion;
• (c) an elongated connecting rod having attachment means for securing the extension sleeve and prosthesis body together;
• and
• (e) attachable bearing collar means affixable to the main body generally transverse to the longitudinal axis of the prosthesis main body for forming a load carrying interface with the upper end of the patient'femur.

An implantable modular hip prosthesis, comprising:

• (a) a hip prosthesis main body having a proximal upper end portion and a lower stem portion, said proximal upper end portion including a neck member extending from the main body and adapted to be coupled to a joint head portion that is configured to engage the acetabulum portion of the joint, said lower stem portion extending distally from the main body and terminating a rounded tip, and being adapted for placement in the intramedullary canal of the patient's femur;
• (b) an elongated tubular sleeve terminating at opposite ends and having a hollowed portion configured for receipt of the lower stem portion;
• (c) attachment means for securing the extension sleeve and prosthesis main body together, forming a seal therebetween;
• (d) the prosthesis main body including a rounded neck block portion adapted for carrying a rounded joint head element;
• and
• (e) the main body having anterior and posterior sockets thereon that are positioned generally below the rounded neck block portion and generally above the stem, and removable pad means attachable to the main body at the sockets for increasing the cross-sectional area of the prosthesis main body.

An implantable modular hip prosthesis, comprising:

• (a) a hip prosthesis main body having a proximal upper end portion and a lower stem portion, said proximal upper end portion including a neck member extending from the main body and adapted to be coupled to a joint head portion that is configured to engage the acetabulum portion of the joint, said lower stem portion extending distally from the main body and terminating at the rounded tip, and being adapted for placement in the intramedullary canal of the patient's femur;
• (b) an elongated tubular sleeve terminating at opposite ends and having a hollowed portion configured for receipt of the lower stem portion;
• (c) an elongated connecting rod having attachment means for securing the extension sleeve and prosthesis body together;
• (d) the prosthesis main body including a rounded neck block portion adapted for carrying a rounded head element, a transitional mid-section portion and a stem section having a generally rounded cross-sectional area;
• (e) a neck having a frustro-conically shaped outer surface;
• (f) a frustro-conically shaped neck extension sleeve registering upon the neck for extending the neck length.