Appoggio and muscle chains
Flexor chains
Leopold Busquet assigns the following roles to this chain:
• Global kyphosis of the trunk
• Physical and psychological "curling up"
• Introversion
It is composed of the following muscles:
On the Trunk
• The anterior intercostal muscles
• Rectus abdominis
• Pelvic floor muscles
Connection to the Shoulder Blade
• Transversus thoracis
• Pectoralis minor
• Pars descendens of the trapezius (connects to the spinal column)
Connection to the Upper Arm
• Pectoralis major
• Rhomboidei
Connexion to the upper extremity
According to Busquet, the upper extremity does not follow the standard reversal between flexion and extension. The flexor chains of the upper extremity hence consist of the anterior muscles:
• Anterior part of the deltoideus
• Coracobrachialis
• Biceps brachialis
• Brachialis
• Hand and finger flexors On the Lower Extremity
Connection to the Cervical Spine
• Splenius colli
Connection to the Head
• Subclavius
• Splenius capitis
Connection to the legs
• Rectus abdominis
• Semimembranosus
Connection to the Lower Extremity
• Flexor digiti minimi brevis
• Lumbricales
The following movements result from an activation of the flexor chain in the leg:
• Backward rotation of the ilium
• Dorsal extension in the ankle joint
• Increase of the foot arch