Shoulder Pathology Flashcards
(141 cards)
Frozen shoulder
condition characterized by functional restriction of both active and passive shoulder motion for which radiographs of the GH joint are essentially unremarkable except for the possible presence of osteopenia or calcific tendonitis
what pattern does frozen shoulder follow?
loss of ROM often in capsular pattern (Cyriax)
loss of ER > ABD > IR
capsular endfeel
frozen shoulder: shortening contracture of?
anterio-inferior capsule, rotator interval, coracohumeral ligament
frozen shoulder types
Primary: adhesive capsulitis (etiology unknown)
Secondary: linked cause
adhesive capsulitis
- etiology unknown
- regional ischemia of the shoulder soft tissues from autonomic sympathetic dysfunction?
- some genetic tendencies
- females>males
- peak incidence in early 50’s
defined clinical course of adhesive capsulitis
4 stages: 1=acute 2=freezing 3=frozen 4=thawing
- typically takes 1-3 years to run course
- important that tx be individualized according to stage
acute stage- adhesive capsulitis
0-3 months
- pathology=acute synovitis
- pain on AROM and PROM
- empty endfeel
- ROM is normal (anesthesia)
freezing stage- adhesive capsulitis
3-9 months
- pathology= hypertrophic hypervascular synovitis, proliferation of scar tissue
- pain on AROM and PROM
- empty end feel, pain before
- ROM becomes severely limited
*the shorter the acute & freezing (inflammatory) phase, the shorter the overall course
frozen stage- adhesive capsulitis
5-9 months
- pathology= dense mature scar tissue, decreased capsular volume (reduction of redundant fold), contractures of coracohumeral ligament, subscapularis, subacromial bursa
- no pain on AROM and PROM
- capsular end feel
- ROM severely limited
- prolonged loss of joint ROM causes changes in muscle- loss of sarcomeres
thawing stage- adhesive capsulitis
15-24 months
- pathology= restoration of capsular volume
- no pain on AROM and PROM
- capsular endfeel
- ROM gradually improving
stage 1 adhesive capsulitis treatment
GOAL: interrupt pain and inflammation, promote relaxation, educate
modalities: as needed for: pain, inflammation, relaxation
strengthening: early closed chain
ROM: AAROM, pain free ROM, gentle PROM, pendulum
stage 2 adhesive capsulitis treatment
goal: minimize pain, inflammation, capsular adhesions, and ROM restriction; posture HEP
modalities: as needed to: decrease pain & inflammation, improve tissue extensibility
strengthening: more advanced: scapular training- specific rotator cuff strengthening
ROM: AROM, PROM
stage 3 & 4 adhesive capsulitis treatment
Goal: increase ROM; posture HEP
modalities: to promote: relaxation, tissue extensibility, reduce tx discomfort
strengthening: more specific: scapular training to reestablish force couples, continued rotator cuff strengthening
ROM: more specific: AROM to reestablish scapular and GH mechanics; more aggressive stretching (PNF, STM, low load prolonged stretch)
secondary frozen shoulder
Loss of ROM: underlying or associated condition can be identified
Intrinsic
Extrinsic
Systemic
Intrinsic secondary frozen shoulder
related directly to the GH joint
rotator cuff disorders, bicep tendonopathy
extrinsic secondary frozen shoulder
remote from the GH joint
cervical radioculopathy, breast surgery, humeral or clavical fx, AC DJD
systemic secondary frozen shoulder
DM, hyper/hypothyroidism, hypoadrenalism
rotator cuff tears/impingement
Intrinsic/Primary
Extrinsic/Secondary
Intrinsic/Primary rotator cuff tears/impingement
=subacromial space issues
- abnormally shaped acromion (hook shaped); rough undersurface
- degenerative changes in the AC joint
- decreased vascularity (critical zone)
Extrinsic/Secondary rotator cuff tears/impingement
=stength/environment
- GH force couple dyskinesia
- ST force couple dyskinesia
- posture
- excessive overhead use of arm
- posterior capsule shortening
GH force couple
- deltoid elevates the arm but also produces superior translation of humeral head
- inferior & medial forces of rotator cuff offset superior translation of deltoid (specifically infraspinatus, teres minor and subscap)
- RC also assists in limiting anterior/posterior translation of humeral head
ST force couple
rotation of scapula is provided by trapezius force couple (upper, mid, lower) and serratus anterior
ST muscle balance
- efficient forces depend on stability of origins of the scapula
- scapular position affects length-tension properties of rotator cuff
- scapular upward rotation, posterior tilt, lateral rotation- NECESSARY to maximize subacromial space
integrated RC, GH, and ST force couples
scapular rotation during arm elevation adds to total ROM
lack of scapular rotation leads to impingement
- scapular rotation is necessary to keep acromion moving away from deltoid insertion
- lack of scapular rotation-head of humerus translates superiorly
failure of scapular adduction-head of humerus translates anteriorly