Infraglenoid fracture of the scapular neck − fact or myth?

2019 ◽  
Vol 98 (7) ◽  
pp. 273-276
Keyword(s):  
Transverse Fracture ◽  
Glenoid Fossa ◽  
Medial Border ◽  
Floating Shoulder ◽  
Neck Fracture ◽  
New Type ◽  
Inferior Border ◽  
Type Of Fracture ◽  
Scapular Neck Fractures ◽  
Scapular Body

In 1991, Ada and Miller described a new type of scapular neck fracture. It was a transverse fracture of the scapular body passing from the inferior border of the glenoid to the medial border of the scapular body (their type IIC). This fracture was later designated by Goss as a “fracture of neck inferior to scapula spine“. Since then, this type of fracture has been the cause of a number of controversies, mainly concerning the so-called “floating shoulder”. However, scapular neck fractures can be considered to be only those fractures that separate completely the glenoid from the scapular body. Term “fracture of neck inferior to scapula spine“ does not fit into this definition because it does not compromise the junction between the glenoid fossa and the scapular body. Actually, it is a transverse two-part fracture of the infraspinous part of the scapular body. As a result this term should no longer be used in the literature.

scholarly journals Influence of coracoglenoid space on scapular neck fracture stability: biomechanical study

2022 ◽  
Vol 23 (1) ◽  
Author(s):  
Junfeng Chen ◽  
Wei Zhang ◽  
Gang Pang ◽  
Qingling Meng ◽  
Youyu Zhu ◽  
...  
Keyword(s):  
Failure Load ◽  
Anatomical Variation ◽  
Biomechanical Study ◽  
Interindividual Variation ◽  
Type I ◽  
Type Ii ◽  
Average Maximum ◽  
Neck Fracture ◽  
The Stability ◽  
Scapular Neck Fractures

Abstract Background The anatomical variation of the coracoglenoid space has the potential to influence the stability of scapular neck fractures. This paper aimed to investigate the mechanical mechanism underlying the influence of different coracoglenoid space types on scapular neck fractures by morphometric analysis and biomechanical experiments. Methods The morphology of 68 dried scapulae (left: 36; right: 32) was studied. Two variables, the length of the coracoglenoid distance (CGD) and the coracoglenoid notch (CGN), were measured. The distribution of CGN/CGD × 100% was used to identify the morphology of the coracoglenoid space. Each specimen was tested for failure under static axial compression loading. The average failure load, stiffness, and energy were calculated. Results Two coracoglenoid space types were identified. The incidence of Type I (‘‘hook’’ shape) was 53%, and that of Type II (‘‘square bracket’’ shape) was 47%. The CGD and CGN were significantly higher for type I than type II (13.81 ± 0.74 mm vs. 11.50 ± 1.03 mm, P < 0.05; 4.74 ± 0.45 mm vs. 2.61 ± 0.45 mm, P < 0.05). The average maximum failure load of the two types was 1270.82 ± 318.85 N and 1529.18 ± 467.29 N, respectively (P = 0.011). The stiffness and energy were significantly higher for type II than type I (896.75 ± 281.14 N/mm vs. 692.91 ± 217.95 N/mm, P = 0.001; 2100.38 ± 649.54 N × mm vs. 1712.71 ± 626.02 N × mm, P = 0.015). Conclusions There was great interindividual variation in the anatomical morphology of the coracoglenoid space. Type I (hook-like) spaces bore lower forces, were less stiff, and bore less energy, which may constitute an anatomical predisposition to scapular neck fractures.

scholarly journals Stress Distribution of a New Type of Perforated Implants in Femur Neck Fracture: Finite Element Model

2018 ◽  
Vol 1045 ◽  
pp. 012017 ◽  
Author(s):  
Afgan Jafarov ◽  
Chingiz Ali-Zadeh ◽  
Zafer Özer ◽  
Amirullah M. Mamedov ◽  
Ekmel Özbay
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Finite Element Model ◽  
Element Model ◽  
Femur Neck ◽  
Femur Neck Fracture ◽  
Neck Fracture ◽  
New Type

Investigation on new type of fracture in Cr-Mo-V steel slab

2019 ◽  
Vol 98 ◽  
pp. 240-248 ◽  
Author(s):  
Chang-Hoon Lee ◽  
Woo-Kyung Seol ◽  
Byung Hwan Kim ◽  
Sung-Dae Kim ◽  
Jae Hoon Jang ◽  
...  
Keyword(s):  
Steel Slab ◽  
New Type ◽  
Type Of Fracture

scholarly journals Subcapital Femoral Neck Fracture following Successful Trochanteric Fracture Treatment with a Dynamic Hip Screw: A Report of Five Cases

2007 ◽  
Vol 15 (2) ◽  
pp. 238-241 ◽  
Author(s):  
YT Lung ◽  
WL Kam ◽  
YF Leung ◽  
OM Chung ◽  
YL Wai
Keyword(s):  
Femoral Neck ◽  
Femoral Neck Fracture ◽  
Dynamic Compression ◽  
Trochanteric Fracture ◽  
Femoral Neck Fractures ◽  
Fracture Treatment ◽  
Trochanteric Fractures ◽  
Neck Fracture ◽  
Hip Screw ◽  
Type Of Fracture

A subcapital femoral neck fracture complicating a healed trochanteric fracture is rare. Such cases are managed in a rather heterogeneous manner, i.e. there exists a mixture of cases treated by either fixed angle devices or dynamic compression screws. We describe 5 patients who developed subcapital femoral neck fractures after healed trochanteric fractures treated with dynamic compression screws. The subjects' clinical data, operative records, and radiographs have been studied retrospectively and the literature reviewed. The risk factors for such a complication include being of advanced age, female, osteoporotic, and having a small femoral head and neck, and a basicervical type of fracture.

Fracture Behavior of Dissimilar Joint by Friction Welding at Elevated Temperatures

2008 ◽  
Author(s):  
Masayoshi Yamazaki ◽  
Takashi Watanabe ◽  
Hiromichi Hongo
Keyword(s):  
Friction Welding ◽  
Elevated Temperatures ◽  
Creep Rupture ◽  
Dissimilar Joints ◽  
Gas Tungsten Arc ◽  
Steel Base ◽  
New Type ◽  
Effects Of Temperature ◽  
Grade 91 ◽  
Type Of Fracture

In this study, the tensile and creep rupture behaviors of dissimilar (SA-387 Grade 91/309S or 310S/SUS-304) joint by friction welding at high temperatures were examined. The effects of temperature and applied stress on the failure locations of the dissimilar welded joints were also investigated. Creep rupture testing was conducted at 600°C and 650°C under stresses ranging from 40 to 160 MPa and 30 to 80 MPa, respectively. For all the temperatures at which the tests were conducted, the creep rupture strengths of the friction welded dissimilar metal joints were found to be lower than those of the 9Cr-1Mo-V-Nb steel base metal and dissimilar joints welded using Gas Tungsten Arc Welding (GTAW). A new type of fracture was observed for the friction welded dissimilar joints.

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