Related Experiment Video
Updated: Jun 26, 2026
07:45
The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report
Published on: August 4, 2022
[Reconstruction of humeroradial joint]
Wolfgang E Linhart1, Tanja Kraus
1Universitätsklinik für Kinderchirurgie, Auenbruggerplatz 34, 8036, Graz, Osterreich. wolfgang.linhart@klinikum-graz.at
Operative Orthopadie Und Traumatologie
|January 27, 2009
Summary
This study demonstrates that three-dimensional open deformity correction using external fixation effectively restores upper extremity alignment and elbow function in children with posttraumatic supracondylar deformity.
Area of Science:
- Orthopedic surgery
- Pediatric orthopedics
- Limb reconstruction
Background:
- Posttraumatic supracondylar deformity of the distal humerus can lead to significant functional and cosmetic impairment.
- Cubitus varus/valgus deformities often result in limited range of motion and psychological distress.
Purpose of the Study:
- To evaluate the efficacy of three-dimensional open deformity correction for posttraumatic supracondylar humerus deformities.
- To assess the restoration of anatomic axis and improvement of elbow function.
Main Methods:
- Ten pediatric patients with posttraumatic supracondylar deformity underwent open correction without wedge resection.
- Three-dimensional reorientation of the distal humerus was performed, with stabilization via external fixation.
- Early postoperative mobilization was encouraged, with an average external fixator treatment time of 10-12 weeks.
Main Results:
- Successful correction of deformity was achieved in all patients, with follow-up ranging from 1 to 9 years.
- Subjective, clinical, and radiologic evaluations showed excellent (3), good (6), and poor (1) outcomes.
- Complications included two pin tract infections and one ulnar nerve irritation.
Conclusions:
- Three-dimensional open deformity correction with external fixation is a viable surgical option for posttraumatic supracondylar humerus deformities.
- This technique can effectively restore upper extremity alignment and improve elbow function in pediatric patients.
- While generally safe, potential complications like pin tract infections and nerve irritation should be monitored.
Related Concept Videos
01:09Bones 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...
The radius has a nail-shaped head, and a short...
01:15Bones 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...
01:19Bones 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...
01:07Development of the Limb Synovial Joints
Joints form during embryonic development in conjunction with the formation and growth of the associated bones. The embryonic tissue that gives rise to all bones, cartilage, and connective tissues of the body is called mesenchyme.
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
01:09Functional Classification of Joints
Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An immobile...
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An immobile...
01:10Deformation in a Circular Shaft
One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...