Editorial Commentary: The Hip Bone's Connected to the Spine Bone-But Correlation Does Not Equal Causation

Area of Science:

• Orthopedics
• Radiology
• Anatomy

Background:

• The hip-spine syndrome describes a relationship between hip and spine pathologies.
• Proximal femoral asphericity, characterized by abnormal hip joint shape, is implicated in this syndrome.

Discussion:

• This study investigated the correlation between lumbar spine arthritis severity and specific quantitative markers of cam morphology.
• Cam morphology, including alpha angle and anterior femoral head-neck offset, describes the shape of the femoral head-neck junction.

Key Insights:

• A significant correlation exists between lumbar spine arthritis and cam morphology markers (alpha angle, anterior femoral head-neck offset).
• Findings were derived from a large osteological collection of cadaveric lumbar spine and femurs.

Outlook:

• While causation is not proven, these findings provide valuable insights into the hip-spine syndrome.
• Further research may explore the biomechanical implications of proximal femoral asphericity on spinal health.