Humerus prosthesis

• US 4,045,825 A
• Filed: 01/28/1976
• Issued: 09/06/1977
• Est. Priority Date: 01/28/1976
• Status: Expired due to Term

• Current Assignee: Jerome H. Stroot
• Original Assignee: Jerome H. Stroot
• Inventors: Stroot, Jerome H.
• Primary Examiner(s): Frinks, Ronald L.
• Application Number:
  US05/653,277
• Time in Patent Office: 587 Days
• Field of Search: 3/1.9-1.913, 3/1, 128/92 C, 128/92 CA
• US Class Current: 623/19.14
• CPC Class Codes: A61F 2/40 for shoulders
• CPC Class Codes: A61F 2/4059 Humeral shafts
• CPC Class Codes: A61F 2/4081 Glenoid components, e.g. cups
• CPC Class Codes: A61F 2002/30574 with an integral complete or partial collar or flange
• CPC Class Codes: A61F 2002/30772 Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/30878 with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/4018 Heads or epiphyseal parts of humerus
• CPC Class Codes: A61F 2002/4029 Necks

Abstract

A novel humerus element is provided which forms part of a total shoulder prosthesis. The novel prosthesis provides greater freedom of action and also provides a superior method of reattaching the tendons to the bone.

Claims

1. In a shoulder prosthesis, a humeral component having a superior side when implanted in the humerus bone that faces towards the front side thereof, said humeral component comprising in combination:

a. a first end terminating in a spherical ball, sized and shaped for fitting in a shoulder socket,

b. a shoulder offset from said ball by about the diameter of the ball, said shoulder having a superior surface lying in the plane of said superior side and including a disclike edge terminating in a substantially flat surface substantially at a right angle to the principal axis of the ball,

c. said shoulder having a plurality of holes adjacent said edge on at least said superior surface thereof, whereby sutures can be passed through said holes to enhance fixation of one or more of the tendons of the rotator cuff, namely supraspinatus, subscapularis, infraspinatus and teres minor tendons to bone and

d. a shaft opposite said first end having a size and shape for attaching said humeral components in the medullary canal of the humerus.