$displaced subcapital femoral neck fracture$

$displaced subcapital femoral neck fracture$

Displaced Subcapital Femoral Neck Fracture: Causes, Classification, and Complications

The displaced subcapital femoral neck fracture is one of the most common intracapsular fractures of the hip. It occurs when there is a break in the proximal part of the femur, just below the ball-shaped head of the thigh bone (femur). This type of fracture is often associated with varus deformity and may be difficult to differentiate from other types of fractures.

There are separate fragments of the greater trochanter, which can make it challenging to diagnose. Additionally, some intertrochanteric fractures may include a portion of the posterior cortex of the femoral neck, making them unstable. Comminuted fractures can also manifest separate fragments of either or both the lesser and greater trochanters.

$displaced subcapital femoral neck fracture$

The displaced subcapital femoral neck fracture is often characterized by a step-off in the cortex superiorly and abnormal overlapping of the femoral head and neck due to impaction. In some cases, additional imaging such as MRI may be required for confirmation of the fracture.

$displaced subcapital femoral neck fracture$

One common pitfall in diagnosing this type of fracture is that a rim of osteophytes may form around the femoral head and project over the neck, mimicking the sclerotic line of a subcapital fracture. The white line of increased density of impacted bone can also be seen at the base of the femoral head.

The displaced subcapital femoral neck fracture has a higher rate of complications than other types of hip fractures. Intracapsular fractures, including this type, have a higher incidence of nonunion and avascular necrosis of the femoral head (up to 35%) compared to extracapsular fractures. The more displaced the fragments are, the higher the rate of complications.

Hip fractures can be classified into several geographic positions, including subcapital, transcervical, basicervical, intertrochanteric, and subtrochanteric. The femoral neck will be seen in profile when the leg is held in internal rotation, which can help in diagnosing this type of fracture.

In terms of treatment, conventional radiography is often the first-line imaging modality used to diagnose and confirm the fracture. When further imaging is required, MRI or nuclear medicine scans are typically utilized. It is essential to note that most hip fractures occur in Caucasian women, particularly in older age groups. In younger individuals, hip fractures are often the result of high-velocity, high-impact trauma.

Conditions such as aging, osteoporosis, and osteomalacia can also predispose individuals to hip fractures. Unfortunately, hip fractures are associated with a substantial mortality rate, with up to 15-20% of patients dying within one year of the fracture.

In conclusion, the displaced subcapital femoral neck fracture is a common intracapsular fracture that requires prompt and accurate diagnosis and treatment to prevent complications and improve patient outcomes. 'completion_tokens = 3029'

$displaced subcapital femoral neck fracture$

Displaced subcapital femoral neck fracture