| 词条 | Cubitus varus |
| 释义 |
| name = Cubitus varus | synonyms = | image = Cubitus varus and cubitus valgus.png | caption = Cubitus varus versus cubitus valgus | pronounce = | field = Rheumatology, medical genetics | symptoms = | complications = | onset = | duration = | types = | causes = | risks = | diagnosis = | differential = | prevention = | treatment = | medication = | prognosis = | frequency = | deaths = }} Cubitus varus (varus means a deformity of a limb in which part of it is deviated towards the midline of the body) is a common deformity in which the extended forearm is deviated towards midline of the body. Cubitus varus is often referred to as "Gunstock deformity", due to the crooked nature of the healing.[1][2] The "opposite" condition is cubitus valgus. Signs and symptomsComplicationsInstances in which the medial epicondyle of the distal humerus is malformed due to the initial fracture at the humeral endplate may result in subluxation (snapping) of the ulnar nerve over the medial epicondyle with active flexion and extension of the elbow. In such instances, conductance of the ulnar nerve may be compromised due to chronic irritation, potentially resulting in irreversible ulnar neuropathy. CausesA common cause is the supracondylar fracture of humerus. It can be corrected via a corrective osteotomy of the humerus and either internal or external fixation of the bone until union.[3] DiagnosisCubitus varus is not able to be diagnosed until after healing of the prior fracture, as the arm must be in full extension, not flexion, for the deformity to be noticed.{{citation needed|date=December 2017}} PrognosisA cubitus varus deformity is more cosmetic than limiting of any function,[4] however internal rotation of the radius over the ulna may be limited due to the overgrowth of the humerus. This may be noticeable during an activity such as using a computer mouse.{{citation needed|date=December 2017}} References1. ^{{cite web|url=http://www.medcyclopaedia.com/library/topics/volume_vii/g/gunstock_deformity.aspx |archive-url=https://archive.is/20120207191118/http://www.medcyclopaedia.com/library/topics/volume_vii/g/gunstock_deformity.aspx |dead-url=yes |archive-date=2012-02-07 |title=Medcyclopaedia - Gunstock deformity |accessdate=2008-02-25 |format= |work=}} 2. ^{{cite journal |doi=10.1097/00000658-190007000-00021 |author=Stimson LA |title=I. Cubitus Varus; or, "Gunstock" Deformity following Fracture of the Lower End of the Humerus |journal=Ann. Surg. |volume=32 |issue=3 |pages=301–8 |date=Sep 1900 |pmid=17860875 |pmc=1425131 }} 3. ^Rüdiger Döhler: Suprakondyläre Korrekturosteotomie beim posttraumatischen Cubitus varus.Unfallchirurg 105 (2002), p. 397-400 4. ^{{cite web |url=http://www.wheelessonline.com/ortho/cubitus_varus |title=Cubitus Varus - Wheeless' Textbook of Orthopaedics |accessdate=2008-02-25 |format= |work=}} External links{{Medical resources| DiseasesDB = | ICD10 = M21.1, Q68.8 | ICD9 = {{ICD9|736.02}}, {{ICD9|755.59}} | ICDO = | OMIM = | MedlinePlus = | eMedicineSubj = | eMedicineTopic = | MeshID = }}{{Acquired deformities}}{{Osteochondropathy}}{{Congenital malformations and deformations of musculoskeletal system}} 2 : Congenital disorders of musculoskeletal system|Arthropathies |
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