Which neurovascular structure can be damaged in the distal end fracture of humerus?
Which neurovascular structure can be damaged in the distal end fracture of humerus?
The radial nerve is most likely to be damaged in humerus fractures that have a lateral displacement of the distal fracture segment, as the nerve is tethered to the bone and cannot withstand the forces applied to it as a result of the displacement.
What is located on the distal humerus?
The distal end of the humerus has two articulation areas, which join the ulna and radius bones of the forearm to form the elbow joint. The more medial of these areas is the trochlea, a spindle- or pulley-shaped region (trochlea = “pulley”), which articulates with the ulna bone.
What are the complications of humerus fracture?
The most common complications were fracture-displacement, malunion, humeral head necrosis and malreduction.
What are the nerves that can be injured in the fracture of the humerus?
The axillary nerve is the most frequently injured nerve in proximal humerus fractures, followed by the suprascapular nerve. Instead, musculocutaneous and median nerves are rarely involved in such kind of fractures.
What is the distal end of the humerus called?
The humerus (/ˈhjuːmərəs/; pl. humeri) is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections….Distal humerus.
| Lower extremity of humerus | |
|---|---|
| FMA | 13303 |
| Anatomical terms of bone |
What is disdissection of the distal humerus?
Dissection was performed about the distal humerus to identify the neurovascular structures at risk from screw placement. The radial nerve was at direct risk with lateral to medial screw placement and the ulnar nerve and median nerve/brachial artery bundle was at risk if significant overpenetration of the medial cortex occurred.
What is a supracondylar elbow fracture of the distal humerus?
Supracondylar fractures are the most common pediatric elbow fracture and carry significant potential for neurovascular compromise [ 1-4 ]. These fractures of the distal humerus are frequently problematic in terms of diagnosis, treatment, and complications [ 1 ].
What is the prevalence of distal humerus fractures in the elderly?
Greater than 60% of distal humerus fractures in the elderly occur from low-energy injuries, such as a fall from standing height. Extra-articular fractures (40%) and bicondylar intra-articular fractures of the distal humerus (37%) are the most common fracture patterns.
What is the AO/OTA classification system for distal humeral fractures?
A commonly used classification system of distal humeral fractures, which takes those features into account is the AO/OTA classification 5.
