Close pack position & Loose Pack (Resting) Positions of joints in Human Body
Close Pack Position:
The position in which there is maximum congruency of the articular surfaces and joint stability is derived from the alignment of bones.
Loose pack (Resting) Position:
The Position of a joint where it is unlocked and free to move.
IMPORTANCE:
| Close Pack Position | Loose Pack Position |
| position with the most amount of joint congruency | position with the least amount joint surface congruency |
| capsule and supporting ligaments maximally tight | capsule and support ligaments and lax |
| accessory motion is minimized | accessory motion or joint play is maximized |
JOINTS of Human Body:
| Joint | Close Pack Position | Loose pack Position |
| Glenohumeral (Shoulder) | Abduction & External Rotation | 55-70 abduction, 30 horizontal adduction |
| Ulnohumeral (Elbow) | Extension | 70 elbow flexion, 10 forarm supination |
| Radiocarpal (Wrist) | Extension with radial Deviation | Midway between flexion and extension |
| Hip | Full extension, internal rotation, abduction | 30 flexion, 30 abduction, slight external rotation |
| Knee | Full Extension with external rotation of tibia | 25 flexion |
| Ankle | Max. Dorsiflexion | 10 plantarflexion |
| Facet (Spine) | Extension | Midway between flexion and extension |
| Temporomandibular | Clenched teeth | mouth slightly open |
| Acromioclavicular | arm abducted to 90 | arm resting |
| Sternoclavicular | Max. shoulder elevation | Arm resting |
| Radiohumeral | elbow flex 90, forarm suppination 5 | full extension, full supination |
| Proximal Radioulnar | 5 supination | 70 elbow flexion, 35 forarm supination |
| Distal Radiohulnar | 5 supination | 10 forearm supination |
| Trapeziometacarpal | full opposition | midway flexion-extension and abduction-adduction |
| Metacarpophalangeal (Thumb) | full opposition | slightly flexion |
| Metacarpophalangeal (finger) | full flexion | slightly flexion with ulnar deviation |
| interphalangeal | full extension | slight flexion |
| subtalar | full suppination | midway between extereme of inversion and eversion |
| midtarsal | full suppination | midway between extreme of ROM |
| tarsometatarsal | full suppination | midway between extreme of ROM |
| metatarsophalangeal | full extension | Neutral |
| interphalangeal | full extension | Slight Flexion |
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