Radiographic Measurements of the Hip Joint in Capuchin Monkeys (Sapajus spp.)

Area of Science:

• Veterinary Radiology
• Primate Anatomy
• Comparative Orthopedics

Background:

• Radiographs are crucial for evaluating hip joint health and anatomy in various species.
• Understanding hip morphology aids in animal health, anatomical studies, and gait analysis.
• Capuchin monkeys (Sapajus spp.) are a relevant model for studying primate hip joint characteristics.

Purpose of the Study:

• To establish normative radiographic hip joint measurements in capuchin monkeys (Sapajus spp.) under human care.
• To investigate potential sex-based or limb-based differences in hip joint morphology.
• To provide reference data for veterinary diagnostics and anatomical research in this species.

Main Methods:

• Ventrodorsal radiographic views were obtained from twelve capuchin monkeys (Sapajus spp.) under chemical restraint.
• Standard radiographic measurements, including Norberg and Wiberg angles, were performed in triplicate on digital images.
• Statistical analysis was conducted to compare measurements between sexes and hind limbs.

Main Results:

• No statistically significant differences were observed in hip joint measurements between male and female capuchin monkeys.
• No significant differences were found between the left and right hind limbs.
• Key measurements included a mean Norberg angle of 104.92° (±2.82°) and a mean Wiberg angle of 15.26° (±1.86°).

Conclusions:

• Radiographic evaluation revealed specific morphological features of the hip joint in Sapajus spp.
• The established measurements contribute valuable data to the knowledge base of capuchin monkey anatomy.
• This study provides a foundation for future research on hip joint health and biomechanics in this primate species.