Launonen, M.D., Ph.D., from University of Tampere in Finland, and colleagues randomly assigned 88 patients (aged ≥60 years) with displaced (>1 cm or 45 degrees) two-part surgical or anatomical neck
proximal humerus fracture to either operative treatment with a locking plate or nonoperative treatment (a collar-cuff sling for three weeks and instructed physical therapy) between February 2011 and April 2016.
In this position, the humeral head is drawn cranially and posteriorly against the glenoid fossa by contraction of the shoulder muscles.7 During the seizure, the anatomical neck
of the humerus is pulled towards the rim of the glenoid fossa, becomes impacted and can eventually be fractured.5 Apparently the same mechanism occured in our patient during the seizure.
Fracture through the anatomical neck
of the humerus with dislocation of the head.
This tapered anatomical neck helps prevent fluid from entering the scrotum from the abdomen but can make it difficult to expel the fluid once edema spreads to the scrotum.
Despite the narrow anatomical neck, the interior of the scrotum is continuous with the peritoneum and is susceptible to fluid leakage from the abdomen.
To evaluate the effects of femoral component positioning, we measured the changes in strains in the femoral neck with nine component positions in relation to the anatomical neck
axis: correct (coaxial with the femoral neck), 10 [degrees] of varus, valgus, anteversion, and retroversion and 5 mm of translation superiorly, inferiorly, anteriorly, and posteriorly.
The femur is the longest bone in the human body being composed at the proximal end by the head, the anatomical neck
(attaching the head to the trochanters), the major and minor trochanters (which serve as the site of insertion of muscles) and the surgical neck, joining the diaphysis the proximal epiphysis femur (Mourao & Vasconcellos, 2001).
Sentinel nodes were labeled according to their anatomical neck
level and their radioactivity.
Left humerous had simple fracture anatomical neck
(Fig 1a) but right humerous also had comminuted fracture anatomical neck