Osteotomy procedure for correcting bone misalignment

Patent metadata

Field	Value
Publication number	US-2024215988-A1
Application number	US-202418608717-A
Country	US
Kind code	A1
Filing date	Mar 18, 2024
Priority date	Aug 26, 2016
Publication date	Jul 4, 2024
Grant date	—

Abstract

An osteotomy procedure may be performed to correct a misalignment of a bone, such as a bunion deformity. In some examples, the osteotomy procedure involves making a spherical-shaped cut transecting a first metatarsal, thereby forming a first metatarsal portion having a spherical-shaped projection and a second metatarsal portion having a spherical-shaped recess. The method further involves moving the second metatarsal portion in at least two planes relative to the first metatarsal portion, thereby adjusting an anatomical alignment of the second metatarsal portion.

First claim

1 . A method comprising:
making a first crescentic-shaped cut transecting a first metatarsal, thereby forming a first metatarsal portion having a concave-shaped end and a second metatarsal portion having a convex-shaped end; making a second crescentic-shaped cut across the concave-shaped end of the first metatarsal portion or the convex-shaped end of the second metatarsal portion; and moving the second metatarsal portion in at least two planes relative to the first metatarsal portion, thereby adjusting an anatomical alignment of the second metatarsal portion.

2 . The method of claim 1 , wherein making the second crescentic-shaped cut comprises making the second crescentic-shaped cut across the concave-shaped end of the first metatarsal portion.

3 . The method of claim 1 , wherein making the first crescentic-shaped cut and making the second crescentic-shaped cut comprises making one of the first and second crescentic-shaped cuts parallel to a frontal plane, thereby forming the concave-shaped end in a transverse plane, and making the other of the first and second crescentic-shaped cuts at an acute angle to the transverse plane along an axis extending from a dorsal-medial side of the first metatarsal portion to a plantar-lateral side of the first metatarsal portion.

4 . The method of claim 1 , wherein making the first crescentic-shaped cut comprises making the first crescentic-shaped cut parallel to a frontal plane, thereby forming the concave-shaped end in a transverse plane.

5 . The method of claim 1 , wherein making the second crescentic-shaped cut comprises making the second crescentic-shaped along an axis extending from a dorsal-medial side of the first metatarsal portion to a plantar-lateral side of the first metatarsal portion.

6 . The method of claim 1 , wherein making the second crescentic-shaped cut comprises making the second crescentic-shaped cut at an acute angle to the transverse plane.

7 . The method of claim 6 , wherein the acute angle ranges from 10 degrees to 35 degrees.

8 . The method of claim 1 , wherein making the second crescentic-shaped cut across the concave-shaped end of the first metatarsal portion comprises making the second crescentic-shaped cut along a same frontal plane as that along which the first crescentic-shaped cut is made.

9 . The method of claim 1 , wherein the first metatarsal portion is a proximal portion of the first metatarsal and the second metatarsal portion is a distal portion of the first metatarsal.

10 . The method of claim 1 , wherein making the first crescentic-shaped cut comprises making the first crescentic-shaped cut on a proximal-most half of the first metatarsal.

11 . The method of claim 10 , wherein making the first crescentic-shaped cut comprises making the first crescentic-shaped cut on a proximal-most quarter of the first metatarsal.

12 . The method of claim 1 , wherein making the first crescentic-shaped cut comprises making the first crescentic-shaped cut with a generally crescent-shaped blade having a radius of curvature ranging from 3 millimeters to 15 millimeters.

13 . The method of claim 12 , wherein making the second crescentic-shaped cut comprises making the second crescentic-shaped cut with a generally crescent-shaped blade having a same radius of curvature as the generally crescent-shaped blade used to make the first crescentic-shaped cut.

14 . The method of claim 1 , wherein moving the second metatarsal portion in at least two planes relative to the first metatarsal portion comprises rotating the second metatarsal portion in a frontal plane.

15 . A method comprising:
making a crescentic-shaped cut transecting a first metatarsal, thereby forming a first metatarsal portion having a concave-shaped end and a second metatarsal portion having a convex-shaped end; making a planar cut across the second metatarsal portion and offset from the concave-shaped end or the convex-shaped end, thereby forming a planar end on the second metatarsal portion and an intermediate bone portion; and moving the second metatarsal portion relative to the first metatarsal portion and the intermediate bone portion, thereby adjusting an anatomical alignment of the second metatarsal portion.

16 . The method of claim 15 , wherein the intermediate bone portion has the convex-shaped end.

17 . The method of claim 15 , wherein making the planar cut comprises making the planar cut prior to making the crescentic-shaped cut.

18 . The method of claim 15 , wherein the first metatarsal portion is a proximal portion and the second metatarsal portion is a distal portion.

19 . The method of claim 15 , wherein making the crescentic-shaped cut comprises making the crescentic-shaped cut parallel to a frontal plane, thereby forming the concave-shaped end in a transverse plane.

20 . The method of claim 15 , wherein making the planar cut offset from the convex-shaped end comprises making the planar cut a distance ranging from 2 to 30 millimeters from a terminal edge of the convex-shaped end.

Assignees

• Treace Medical Concepts Inc

Inventors

• Bays F Barry
• Ferguson Joe W
• Gil Carlos Eduardo
• Hissong Tyler
• Peterson Danielle
• Scanlan Sean F
• Stedham Michael
• Valentine Justin

Classifications

• A61B17/68

  Internal fixation devices {, including fasteners and spinal fixators, even if a part thereof projects from the skin (bone staples A61B17/0642)} · CPC title

• A61B17/56

  Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor · CPC title

• A61B17/1637

  Hollow drills or saws producing a curved cut, e.g. cylindrical (A61B10/025, A61B17/1695 take precedence) · CPC title

• A61B17/15

  Guides therefor · CPC title

• A61B17/1775

  for the foot or ankle · CPC title