Late complication of Acetabular fracture
**Core Concept**
Acetabular fractures are complex injuries that can lead to various complications due to the anatomical location and functional importance of the acetabulum. The late complications of acetabular fractures are often related to the development of secondary degenerative joint disease or avascular necrosis (AVN) of the femoral head.
**Why the Correct Answer is Right**
The most common late complication of acetabular fractures is the development of post-traumatic osteoarthritis (PTOA) or degenerative joint disease. This occurs due to the disruption of the articular surface and the subsequent loss of joint space, leading to abnormal wear and tear of the cartilage. In some cases, the blood supply to the femoral head may be compromised, resulting in avascular necrosis (AVN). This can further contribute to the development of PTOA.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because while infection is a possible complication of acetabular fractures, it is not the most common late complication.
**Option B:** This option is incorrect because while heterotopic ossification (HO) is a known complication of acetabular fractures, it is more commonly seen in the early post-operative period rather than as a late complication.
**Option C:** This option is incorrect because while avascular necrosis (AVN) is a possible complication of acetabular fractures, it is not the most common late complication.
**Clinical Pearl / High-Yield Fact**
It is essential for orthopedic surgeons and emergency medicine physicians to be aware of the potential late complications of acetabular fractures, including post-traumatic osteoarthritis and avascular necrosis, to provide appropriate management and follow-up care for patients with these injuries.
**Correct Answer: D. Post-traumatic osteoarthritis (PTOA) or degenerative joint disease.**