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Related Concept Videos

Bones of the Upper Limb: Ulna01:15

Bones of the Upper Limb: Ulna

The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side of the...
Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
Bones of the Upper Limb: Radius01:09

Bones of the Upper Limb: Radius

The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
The radius has a nail-shaped head, and a short...

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Related Experiment Video

Updated: Jun 18, 2026

Novel Triple-Loop Technique for Suturing TFCC Injuries without Transosseous Tunnel
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Novel Triple-Loop Technique for Suturing TFCC Injuries without Transosseous Tunnel

Published on: May 23, 2025

Single-Stage Double-Level Osteotomy for Complex Cubitus Varus Involving the Humerus and Ulna: A Case Report.

Satoshi Miyamura1, Ryoya Shiode1, Toru Iwahashi1

  • 1Department of Orthopaedic Surgery, The University of Osaka, Graduate School of Medicine, Suita, Osaka, Japan.

JBJS Case Connector
|June 16, 2026
PubMed
Summary

Double-level osteotomy effectively corrected complex cubitus varus in a young baseball pitcher, restoring elbow alignment and allowing a return to competitive sports. This surgical technique offers reliable anatomical realignment for multiplanar deformities.

Keywords:
computed tomographycorrective osteotomycubitus varusdouble-level osteotomyelbow deformitypatient-specific instrumentationthree-dimensional evaluation

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Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner
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Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner

Published on: June 6, 2025

Area of Science:

  • Orthopedic surgery
  • Biomechanical engineering
  • Pediatric orthopedics

Background:

  • Cubitus varus deformity can arise from childhood elbow fractures.
  • Multiplanar deformities of the humerus and ulna present complex surgical challenges.
  • Conservative treatment of pediatric elbow fractures may lead to progressive deformity.

Purpose of the Study:

  • To evaluate the efficacy of a single-stage double-level osteotomy for correcting complex cubitus varus.
  • To assess the use of patient-specific instrumentation in managing multiplanar elbow deformities.
  • To determine the functional outcomes and long-term results of this surgical approach in a young athlete.

Main Methods:

  • Three-dimensional evaluation of multiplanar humerus and ulna deformities.
  • Single-stage double-level osteotomy utilizing patient-specific cutting guides.
  • Application of custom-made plates for fixation.
  • Postoperative assessment of alignment, bone union, and complications.

Main Results:

  • Successful restoration of elbow alignment.
  • Achieved bone union without surgical complications.
  • Patient returned to competitive baseball at 5 months post-surgery.
  • Remained asymptomatic at 36 months of follow-up.

Conclusions:

  • Complex cubitus varus involving multiple skeletal segments may require double-level osteotomy for correction.
  • Double-level osteotomy enables anatomical realignment while preserving elbow joint orientation.
  • Patient-specific 3D techniques reliably achieve these surgical goals.