Ulnar trochlear notch articular surface has three morphological patterns: a neglected major anatomical feature

Totlis, Trifon; Otountzidis, Nikolaos; Papadopoulos, Stavros; Piagkou, Maria; Natsis, Konstantinos

doi:10.1007/s00276-019-02310-y

Cited by 6 publications

(1 citation statement)

References 8 publications

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“…This norm is referred to as type I, which was found in 60% cases in the study by Totlis et al The two facets of the trochlear notch might also be partially (type II) or completely (type III) fused. If this is the case and the articular surface is not completely separated (the remaining 40% of cases), the olecranon osteotomy increases the risk of secondary osteoarthritis (29).…”

Section: Articular Surfacesmentioning

confidence: 99%

Osseous variability around the elbow joint

2022

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There are many osseous variants that occur around the elbow joint such as supracondylar process, supratrochlear foramen, accessory ossicles, and others. Scientific databases were searched for variants around the elbow joint. Elbow radiographs from our center demonstrating some of these findings were included in the study. The aim of the present review was to provide comprehensive information on the terminology, prevalence, history, etiology, and clinical importance of these variants. These anatomical variants are important for radiologists while interpreting radiographs, computed tomography, and magnetic resonance imaging for trauma and orthopedic surgeons during osteosynthesis at the distal humerus, proximal ulna, and radius.

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Section: Articular Surfacesmentioning

confidence: 99%

Osseous variability around the elbow joint

2022

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Elbow Pathology: Traumatic

Stratchko

Ladd

Blankenbaker

2021

MRI of the Upper Extremity

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Morphometric feature description of the proximal ulna based on quantitative measurement: a key consideration for implant design

Wang

et al. 2022

Surg Radiol Anat

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Purpose To perform quantitative measurements of the anatomic morphology of the proximal ulna and establish the morphologic references based on Chinese for the surgical protocol and implant design. Methods The computed tomography data of 156 upper extremities were involved in this study. The ulna model was reconstructed in Mimics. Ten distance and 6 angle parameters were measured by 4 independent investigators with a new quantitative measurement method. The intraclass correlation coefficient was used to evaluate the measuring reliability. Gender and side differences of measured parameters were evaluated. Results Measurements showed a mean coronoid height of 15 mm, which was 42% of ulnar height with gender-specific differences (mean 16 mm in men and 14 mm in women, P < 0.001). A mean unsupported anteromedial facet width of 8 mm was 61% of the coronoid anteromedial facet. A larger opening angle correlates to a larger olecranon-diaphysis angle (P < 0.001) and larger coronoid height (P = 0.001). A mean proximal ulna dorsal angulation of 4.7° is present in 80% of models at an average of 52 mm distal to olecranon tip. The average proximal ulna varus angulation was 16° at a mean of 74 mm distal to the olecranon tip. Morphological features between the left and right sides were highly consistent. The ICC was between 0.789 and 0.978 for inter-observer and between 0.696 and 0.997 for intra-observer reliability. Conclusions The proximal ulna features variable morphology but minor side differences among individuals. Over half of the anteromedial facet was not supported by the proximal ulnar diaphysis, making the coronoid vulnerable to elbow trauma. Preconditioning or customized design of the ulnar plate in the clinical setting with the help of contralateral morphology may be a good choice.

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Ulnar trochlear notch articular surface has three morphological patterns: a neglected major anatomical feature

Cited by 6 publications

References 8 publications

Osseous variability around the elbow joint

Osseous variability around the elbow joint

Elbow Pathology: Traumatic

Morphometric feature description of the proximal ulna based on quantitative measurement: a key consideration for implant design

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