Hip Critical Events and Muscle Actions Flashcards
Critical Event and Objectives: Loading Response
Maintains 20 Degrees of Flexion
Objective: Weight bearing Stability (The hip maintains the stability while the knee and ankle are moving).
Critical Event and Objectives: Mid-Stance
20 Degrees of Flexion - 0 Neutral
Objective: Progression of the COM over the BOS and Single leg stance stability.
Critical Event and Objectives: Terminal Stance
0 Neutral - 20 Degrees of Extension
Objective: Progression of the COM beyond the BOS and allows for normal step/stride length.
Critical Event and Objectives: Pre-Swing
20 Degrees of Extension - 0 Neutral
Objective: Initiates Limb Advancement and passive knee flexion.
Critical Event and Objectives: Initial Swing
0 Neutral - 10 Degrees of Flexion
Objective: Limb Advancement
Critical Event and Objectives: Mid- Swing
10 Degrees - 20 Degrees of Flexion
Objective: Continued Limb Advancement
Critical Event and Objectives: Terminal Swing
Maintain 20 Degrees of Flexion
Objective: Completes Limb Advancement and ensure normal step/stride length and heel contact.
Muscle Actions: LR
Hip Flexion Moment
Isometric Hip Extensors
Glute Max
Hamstrings
Adductor Mag
Muscle Actions: Early MS
Reducing Hip Flexion Moment
Concentric Hip Extensors
Muscle Actions: Late MS
Neutral Moment
No Muscle Action
Muscle Actions: Terminal Stance
Hip Extension moment
Resisted Passively by the anterior hip capsule and tension of anterior structures.
No Hip Flexor Activity
Muscle Actions: Pre-Swing
Reducing Hip Extension Moment
Concentric Hip Flexors
Muscle Actions: Initial Swing
Hip Extension Moment Gravity Driven
Concentric Hip Flexors
Muscle Actions: Mid-Swing
Hip Extension Moment Gravity Driven
Concentric Hip Flexors
Muscle Actions: Terminal Swing
Hip Extension Moment Gravity Driven
Isometric hip Extensors
Glute Max
Adductor Mag
Eccentric Hamstrings
