Corkscrew Claw.

Area of Science:

• Veterinary Medicine
• Animal Science
• Genetics

Background:

• Corkscrew claw (CSC) is a congenital conformational abnormality affecting cattle digits, primarily observed in Dutch black and white breeds since the 1950s.
• The condition is characterized by abnormal claw morphology, including elongation, narrowing, and a distinct inward and upward spiral rotation of the toe.

Purpose of the Study:

• To describe the clinical presentation and pathological features of corkscrew claw in cattle.
• To enhance understanding of the biomechanical implications of CSC on digit function and weight-bearing.

Main Methods:

• Morphological examination of affected bovine digits.
• Analysis of claw dimensions and rotation angles.
• Observation of weight-bearing distribution and sole contact.

Main Results:

• Affected claws exhibit increased length and reduced width with a spiral rotation.
• The bearing surface of the claw wall is displaced inward, causing animals to bear weight on the abaxial wall surface.
• The sole becomes non-weight bearing, while the axial wall displaces dorsomedially, forming a fold.

Conclusions:

• Corkscrew claw significantly alters normal digit biomechanics in cattle.
• The abnormal conformation necessitates weight redistribution, potentially leading to secondary complications.
• Further research into the genetic and developmental basis of CSC is warranted.