title: Changes in joint space width during Kaltenborn traction according to traction grade in healthy adults.
abstract: [Purpose] The aim of this study was to analyze the joint space width of the humeral head and glenoid fossa during traction under 2 grade conditions (grade 2/grade 3). [Subjects and Methods] The subjects were 20 healthy male adults who had not experienced any shoulder injury. Three radiographs were obtained with the subjects in the supine position (resting, grades 2 and 3). The glenohumeral joint space was examined on radiography. Joint space width was measured by a radiologist at the points described by Petersson and Redlund-Johnell. A radiologist blinded to the variable "resting" or "traction" performed all radiographic measurements. The joint space widths were compared by using one-way repeated-measures analysis of variance. [Results] The results of this study indicated significant differences in the changes in joint space width according to traction grade. Compared to resting, grades 2 and 3 traction significantly increased joint space width. However, no significant difference in joint space width was found between grades 2 and 3 traction. [Conclusion] Although no significant differences were found between grades 2 and 3 traction during glenohumeral joint traction, the increase in joint space width between the glenoid fossa and humeral head was highest during grade 3 traction.
authors.affiliation: Department of Physical Therapy, The Graduate School, Daegu University, Republic of Korea.
authors.forename: Gui-do
authors.initials: GD
authors.lastname: Moon
authors.affiliation: Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Republic of Korea.
authors.forename: Tae-Ho
authors.initials: TH
authors.lastname: Kim
authors.affiliation: Department of Physical Therapy, The Graduate School, Daegu University, Republic of Korea.
authors.forename: Jin-Yong
authors.initials: JY
authors.lastname: Lim
keywords: Glenohumeral joint; Joint space width; Traction