Related Experiment Video
Updated: Jul 28, 2026
12:25
C-arm-Free Simultaneous OLIF51 and Percutaneous Pedicle Screw Fixation in a Single Lateral Position
Published on: September 16, 2022
4.9K
Trans-Scaphoid Perilunate Dislocation: Union of an Extruded Scaphoid Proximal Pole Fragment
Pky Goon1, K R Vaghela2, A J Chojnowski1
1† Department of Hand Surgery, Orthopaedics and Trauma, Norfolk and Norwich University Hospital, Norwich, United Kingdom.
Summary
This case report details an extreme wrist injury involving perilunate dislocation and scaphoid fracture. Early surgical intervention achieved successful union despite an avascular fragment and unusual dislocation pattern.
Area of Science:
- Orthopedic Surgery
- Traumatology
- Hand Surgery
Background:
- Perilunate dislocations are severe wrist injuries.
- Scaphoid fractures often accompany carpal dislocations.
- Unusual fracture patterns require careful management.
Observation:
- A closed perilunate dorsal dislocation of the carpus with an associated scaphoid fracture was observed.
- The proximal scaphoid pole extruded volarly and proximally.
- A dorsal dislocation of the proximal scaphoid pole occurred after closed manipulation, a novel finding.
Findings:
- Open reduction revealed the proximal scaphoid fragment lacked soft tissue attachment.
- Distal radius bone grafting and compression screw fixation were performed.
- The scaphoid fracture achieved union with a good functional outcome.
Implications:
- This case highlights a rare and severe wrist injury with a unique dislocation pattern.
- Early surgical fixation of scaphoid fractures with avascular fragments can lead to successful union.
- Management strategies for complex carpal injuries may need reevaluation.
Related Concept Videos
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...
01:09Bones 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...