Sprengel’s shoulder is due to deformity –
**Core Concept**
Sprengel's shoulder is a rare congenital anomaly characterized by a high-riding scapula, resulting from a developmental issue during embryogenesis. This condition is often associated with other musculoskeletal abnormalities and can be caused by a variety of factors, including genetic mutations and environmental influences.
**Why the Correct Answer is Right**
Sprengel's shoulder is a result of a fibro-osseous fusion between the scapula and the cervical spine, leading to a short and high-riding scapula. This fusion occurs due to a failure of the scapula to descend normally during embryonic development, resulting in a developmental deformity. The exact cause of this fusion is often unclear, but it is thought to be related to a disruption in the normal developmental pathways that regulate scapular growth and positioning.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Sprengel's shoulder is a congenital deformity, not an acquired condition resulting from trauma or injury.
**Option B:** This option is incorrect because Sprengel's shoulder is a specific type of scapular deformity, not a general term that encompasses all types of scapular abnormalities.
**Option C:** This option is incorrect because Sprengel's shoulder is a developmental deformity, not a condition resulting from a systemic disease or infection.
**Clinical Pearl / High-Yield Fact**
Sprengel's shoulder is a rare but important condition to recognize in patients with scapular deformities, as it can be associated with other musculoskeletal abnormalities and may require surgical intervention to correct the deformity.
**Correct Answer:** D