In fractures of the radial shaft, the deformity is usually not pronounced and may be quite difficult to recognize. If one or both fragments are displaced toward the ulna, the radial side of the forearm may show an abnormal concavity as illustrated in Fig. 287. In any case there will be pain in the region of the fracture, tenderness on pressure and manipulation, swelling and more or less complete loss of function. If the fracture is in the lower third of the radius and the upper end of the lower fragment displaced toward the ulna, the radial styloid will be correspondingly raised and the lower articular surface changed in position. Overriding of the fragments and shortening, however, will be absent unless the head of the ulna is luxated or the ulnar shaft fractured.
During supination and pronation of the forearm the radial head will, in most cases, fail to follow the rotation of the shaft. Crepitus can, as a rule, be elicited if the fragments are grasped above and below the seat of the fracture and manipulated. If the forearm be placed in supination and firmly held in this position, while lateral pressure is exerted on the shafts of the radius and ulna by the thumb and forefinger of the opposite hand, the normal lateral spring of the radial shaft will be found wanting.
In children the fracture may be of the green-stick or subperiosteal type and accordingly crepitus and mobility will be absent. The shaft, however, usually shows more or less bowing in a given direction and the region of fracture will be swollen, tender and painful. Lateral pressure on the radial shaft will usually show that the normal lateral spring of the shaft is increased and will produce pain at the seat of fracture rather than at the point of pressure.
<Callout type="important" title="Critical for Diagnosis">It is crucial to recognize the absence of crepitus in children's fractures, which can be easily mistaken for a sprain or bruise.</Callout>
Fracture of the ulnar shaft alone is productive of symptoms similar to isolated fracture of the radial shaft except that the swelling, pain, tenderness, etc., are situated on the inner side of the forearm rather than on the radial side. Displacement is rarely pronounced as long as the radius remains intact.
When both bones are broken the deformity is usually pronounced and may be of either the overriding or angular type. The bones of the forearm may be displaced in any direction but the common deformity consists in a backward bending of the forearm; — the dorsal surface of the forearm forms an obtuse angle while the ventral surface forms the salient angle.
<Callout type="warning" title="Dangerous Misstep">Attempting to reduce fractures without proper training can lead to further injury and complications.</Callout>
The nature of the deformity and the crease on the dorsal surface of the forearm will usually indicate the relative levels of the two fractures. This crease represents the apex of the angle of displacement and when the fractures are at the same level the crease will run transversely across the back of the forearm.
Treatment involves careful reduction, immobilization with splints, and in some cases surgical intervention to secure fragments in place.
Key Takeaways
- Recognize pain, tenderness, swelling, and loss of function as key symptoms of radius fractures.
- Use X-rays to confirm diagnosis and assess the accuracy of reduction after manipulation.
- Understand that green-stick fractures in children can be easily overlooked without proper examination.
Practical Tips
- Apply lateral pressure on the forearm to check for normal springiness indicative of a healthy bone.
- Immobilize the elbow or wrist as necessary when treating radius fractures based on their location.
- Use splints made from materials like Yucca board, but only if experienced and closely monitoring the patient.
Warnings & Risks
- Do not attempt reduction without proper training to avoid further injury.
- Be cautious of overlooking green-stick fractures in children due to lack of typical fracture symptoms.
Modern Application
While this chapter provides foundational knowledge on diagnosing and treating radius fractures, modern medical advancements such as improved imaging technology (like MRI) and surgical techniques have enhanced the accuracy and effectiveness of treatment. However, understanding historical methods remains crucial for emergency situations where advanced medical facilities are unavailable.
Frequently Asked Questions
Q: What are the key symptoms to look out for when diagnosing a radius fracture?
Key symptoms include pain in the region of the fracture, tenderness on pressure and manipulation, swelling, and more or less complete loss of function.
Q: Why is it important to use X-rays in treating fractures?
X-rays are crucial for confirming the diagnosis and assessing the accuracy of reduction after manipulation, ensuring proper alignment and healing of the bones.
Q: What should be done if a green-stick fracture is suspected in a child?
Green-stick fractures can be easily overlooked due to lack of typical symptoms like crepitus. It's important to conduct a thorough examination, including lateral pressure tests and X-rays, to confirm the diagnosis.