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dislocation of ginglymus at the calcussounds very interesting, but what does it mean, please?
and why not use a simple “hinge joint”?
I would have liked just a little more context – are we talking about a
proximal fracture of the humerus here? It would certainly appear so from the reference to the “Kopffragment” of a “Humerusfraktur”. This means that it refers to the shoulder and has nothing to do with the elbow at all. The shoulder joint is, however, not a hinge joint (or a “ginglymus”for that matter – must make a mental note of that word, I’d almost forgotten it and had to look it up … it might come in useful for Scrabble one day).
I think “Kalkar” is being used here for “Kalkarregion”/"Calcar" of a bone. In the femur, for example, this is known as the “calcar femorale” and defined as " dense vertically oriented bone that originates in posteromedial portion of femoral shaft under lesser trochanter".
http://www.wheelessonline.com/ortho/calcar_fe...http://kneereplacementinfo.info/cps/rde/xbcr/...So by extrapolation, this would be the calcar (region) = dense vertically oriented bone in the proximal humerus.
“Figure 4
AP of the proximal humerus after reduction and placement into a coaptation splint. Note the 3 part proximal humerus fracture and the midshaft humerus fracture. A short medial metaphyseal
calcar region can be appreciated on this film.”
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2...And I think the “Hinge” here is precisely that, not a “hinge joint”
“ … sowie die Diskontinuisierung des medialen Calcars („medial hinge“) …“
http://www.hansechirurgie.de/img/schulterprot...“By combination of the above criteria : anatomic neck,
short calcar,
disrupted hinge, positive predictive values of up to 97% obtained in Hertel’s study.”
http://www.shoulderdoc.co.uk/article.asp?arti...“Fractures with initial varus angulation, a short metaphyseal segment of less than 2 mm, or medial comminution and loss of the
medial soft-tissue hinge are at increased risk of developing osteonecrosis. By contrast, the prognosis is better for impacted valgus fractures with a medial metaphyseal segment longer than 2 mm and an intact
medial hinge.18“
http://test2.aaos.org/oko/page.cfm?pageID=OKO..."Figs. 5-A and 5-B Drawing showing a proximal humeral fracture with a
disrupted medial hinge"
http://www.swotaweb.org/file_view.php?action=...>"
... zeigt sich eine Varusstellung des Kopffragmentes mit Dislokation des Hinges am Kalkar...""
... the humeral head fragment shows varus angulation, with a disrupted hinge in the calcar region ..."
or you could simply say "
disrupted medial hinge"
Does that fit the context?
