Mechanical Properties of the Glenohumeral Joint during Anteroposterior Glide Mobilization in Patients with Adhesive Capsulitis

  • 教 富佳

Student thesis: Master's Thesis

Abstract

ABSTRACT Background and purpose: It is well known that patients with adhesive capsulitis suffer from pain and restricted ranges of motion (ROMs) of the glenohumeral joint Load-displacement curve (LDC) is an objective method to describe the biomechanical properties of glenohumeral joint during mobilization Most past cadaver studies reported the mechanical properties of the glenohumeral joint But there are very few reports using quantitative measures to assess patients with adhesive capsulitis in various mobilization techniques applied at the glenohumeral joint Therefore the purpose of this study is to investigate the mechanical properties via LDC of the glenohumeral joint during anteroposterior glide mobilization in neutral and rotated positions in patients with adhesive capsulitis and their age-match controls Materials and methods: The frozen shoulder group (FG) included 13 subjects (mean age: 58 46±5 36y/o) and 16 aged matched controls (mean age: 55 38±5 71y/o) in control group (CG) participated A 6-DOF robotic arm was employed to perform anteroposterior glide mobilization on glenohumeral joint of all participants on the greater tubercle of the humerus in a direction perpendicular to the plane of scapula The participant laid on a firm treatment table and received 5 repetitions of anteroposterior glide mobilization in the following positions of arm rotation in a random order: 60° external rotation (ER) natural position NP and 60° internal rotation (IR) The peak force applied was 7kg The relationship between force applied by the robot (load) and response of the tissue (displacement) was established and analyzed The magnitudes of displacement force and stiffness of the specific point and region on load-displacement cure were calculated A two-way mixed model ANOVA with repeated measures was employed to assess main effects (group and position) for displacement force and stiffness Results: There was significant group difference at external rotation position (CG > FG p< 001) on Dspl_Toe Position differences were found FG (NP>ER t=-6 184 pER t=-4 953 p FG p= 001) and IR (CG > FG p= 028) on Dspl_7 kg There were significant group differences were found at ER (CG <FG p= 015) and IR (CG <FG p= 013) on force_Toe There was significant group differences found at ER (CG <FG P= 001) on stiff_T13 There were group differences found at ER (CG <FG P< 001) and IR (CG <FG P= 0 009) There were significant differences were found at ER (CG <FG p< 001) NP (CG <FG p= 032) and IR (CG <FG P= 006) on stiff_LE Conclusion: On the load displacement curve the magnitudes of displacement at toe region and at 7 kg were smaller in patients with adhesive capsulitis than those of the age matched controls Patients with adhesive capsulitis have greater force registered at toe region and stiffness at the toe region and the linear elastic region than those of the control group The magnitudes of displacement collected with the arm positioned in external rotation were smaller than that of internal rotation Patients with adhesive capsulitis have contracture and thickened coracohumeral ligament and rotator interval capsule Therefore physical therapists make arm positioned in external rotation during anteroposterior glide mobilization on the patients with adhesive capsulitis in the future
Date of Award2016 Aug 24
Original languageEnglish
SupervisorYi-Ju Tsai (Supervisor)

Cite this

Mechanical Properties of the Glenohumeral Joint during Anteroposterior Glide Mobilization in Patients with Adhesive Capsulitis
富佳, 教. (Author). 2016 Aug 24

Student thesis: Master's Thesis