Shoulder Mechanics and Soft tissue Flashcards
Scapulothoracic Articulation
scapula glides of ribcage with shoulder motion
for every 2deg of GH: 1 deg at the scapulothoracic
–> initiated up to 30 deg by GH joint
need to treat SD in Tspine to allow optimal function
Sternoclavicular joint
capable of A/P, SUP/INF AND rotation
can be restricted with shoulder injury (especially in infections)
Arterial supply to RC muscles
suprascapular a. can be affected by SD in anterior and middle scalenes, upper TVs, CVs,ribs, clavicles etc (same with venous drainage)
(similar to lymphatic drainage)
sympathetic tone
can reduce lymphatic drainage when active
can be increased due to thoracic SD
from T2-T6
Throwing tensegrity chain
force is transmitted from ground –>lower extremity–> spine–> shoulder
> if one structure breaks down, the entire chain is compromised putting shoulder at risk
**essential to have stable scapula from ipsilateral hip, trunk, and gluteals
***Psoas major tension is a major contributor to scapular destabilization–> RC injury
Muscle predisposed to injury from throwing
posterior shoulder muscles such as the posterior delt and teres minor (involved with breaking)
Thoracolumbar junciton
SD at T10-L2–>alters thoracolumbar fascia (lats, psoas major affected)–>somatovisceral reflex to adrenal gland–>adrenal fatigue in athletes
Supraspinous tenderpoint
located in the supraspinous fossa
subscap tenderpoint
on the posterior axillary fold
biceps tenderpoint
along the LH of the bicep in the bicipital groove
Spencer’s Technique
1) Extend: have pt flex against you
2) Flexion: have pt extend against you
3) Circumduction w/ compression
4) Circumduction w/ traction
5) Adduction/ER: have pt abduct against you
6) Abduction: adduct against you
7) IR: hand behind back, pt ER by pushing elbow into your hand
8) Inferior glide/ joint pump
Stretching
pulling traction along a longitudinal axis
kneading
pressing tissues along latitudinal axis (perpendicular to paraspinals)
Effleurage
superficial lymphatic treatment that applies pressure or light stroking to tissues from distal to proximal
petrissage
skin rolling, deep pressure and or squeezing applied to break down adhesion b/w skin and muscle
