1. Ulnar trochlear notch articular surface has three morphological patterns: a neglected major anatomical feature
- Author
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Nikolaos Otountzidis, Maria Piagkou, Trifon Totlis, Konstantinos Natsis, and Stavros Papadopoulos
- Subjects
Male ,musculoskeletal diseases ,medicine.medical_specialty ,Facet (geometry) ,Olecranon ,medicine.medical_treatment ,Elbow ,Ulna ,Osteotomy ,Pathology and Forensic Medicine ,03 medical and health sciences ,Elbow Joint ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,0303 health sciences ,business.industry ,Anatomic Variation ,Anatomy ,musculoskeletal system ,Ridge (differential geometry) ,medicine.anatomical_structure ,030301 anatomy & morphology ,Trochlear notch ,Orthopedic surgery ,Female ,Surgery ,Anatomical feature ,business - Abstract
The typical anatomical illustration of the trochlear notch articular surface includes a transverse rough non-articular ridge which separates the olecranon and coronoid part of the joint. This transverse ridge, the “bare area”, is not covered by cartilage and represents the optimal entry point for olecranon osteotomies. Aim of the present study was to encounter the anatomical variations in the morphology of the trochlear notch articular surface. Two-hundred seventy-three dried ulnae were inspected and a qualitative classification of the variations of the trochlear notch articular surface was done. Correlation to gender and side was examined. Three distinct morphological patterns were observed. Separate olecranon and coronoid facets (Type I) were the most common pattern (165/273, 60.4%). Partial fusion of olecranon and coronoid facets (Type II) was observed in 75 out of 273 bones (27.5%), while a single olecranon and coronoid facet (Type III) was present in 33 out of 273 bones (12.1%). The occurrence of Type II and III was significantly more common in females (p
- Published
- 2019
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