title: Correlation between anatomical parameters of intertubercular sulcus and retroversion angle of humeral head.
abstract: OBJECTIVE
  To obtain anatomical data on intertubercular sulcus of humerus, evaluate the correlation between intertubercular sulcus and retroversion angle of humeral head, to guide the positioning of torsion angle of prosthesis during total shoulder arthroplasty and provide references for shoulder prosthesis design.
  
  
  METHODS
  Using a Siemens Ultrahigh speed 64- rows multi-slices spiral CT scanner and 20 dried adult humeral specimens (intact specimen, no fractures or pathological damage), of these, left lateral in 10 cases, right lateral in 10 cases, male or female all inclusive, specimens are all provided by Anatomy Department of Weifang Medical College, scan ranged from the highest point of humeral head to the distal ends of trochlea. And scanned data were subjected to statistical analysis.
  
  
  RESULTS
  There is a linear correlation between the distance from intertubercular sulcus to central axis line of humeral head, position angle of intertubercular sulcus and retroversion angle of humeral head at the beginning slice of intertubercular sulcus. There is a linear correlation between position angle of intertubercular sulcus and retroversion angle of humeral head at the slice of surgical neck.
  
  
  CONCLUSIONS
  There is a linear correlation between position of intertubercular sulcus and retroversion angle of humeral head, in total shoulder arthroplasty, using intertubercular sulcus as anatomical landmark will help to accurately position torsion angle of individualized prosthesis. Position angle of intertubercular sulcus is an objective, flexible positioning indicator.
authors.affiliation: Department of Joint Surgery, The Eighty-Ninth Hospital of People's Liberation Army Weifang 261021, China.
authors.forename: Zhaoxun
authors.initials: Z
authors.lastname: Pan
authors.affiliation: Sanatorium for 71521 Army Retired Cadres Xinxiang, Henan 453000, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.affiliation: Department of Joint Surgery, The Eighty-Ninth Hospital of People's Liberation Army Weifang 261021, China.
authors.forename: Lianjun
authors.initials: L
authors.lastname: Qu
authors.affiliation: Department of Joint Surgery, The Eighty-Ninth Hospital of People's Liberation Army Weifang 261021, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Cui
authors.affiliation: Department of Joint Surgery, The Eighty-Ninth Hospital of People's Liberation Army Weifang 261021, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Sun
authors.affiliation: Department of Joint Surgery, The Eighty-Ninth Hospital of People's Liberation Army Weifang 261021, China.
authors.forename: Hongxin
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Joint Surgery, The Eighty-Ninth Hospital of People's Liberation Army Weifang 261021, China.
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Yang
authors.affiliation: Department of Joint Surgery, The Eighty-Ninth Hospital of People's Liberation Army Weifang 261021, China.
authors.forename: Qingli
authors.initials: Q
authors.lastname: Guan
keywords: Intertubercular sulcus; correlation; measurement; position angle of intertubercular sulcus; retroversion angle of humeral head