Biomechanics 2nd Practical Q's - Practice

1. What angle is being shown here?

2. What does this angle measured cause at the hip?

3. What does this result in at the knee?

1. Angle of inclination

2. Coxa Vara

*(Normal: 125º; Coxa Vara: <125º; Coxa Valga: >125º)

3. Genu Valgum

1. Is this anteversion or retroversion?

2. What is the tendency seen in order to improve joint congruency?

1. Anteversion

2. Standing in IR (Toeing in)

*In retroversion, there is an ER tendency (duck)

1. What angle is being shown here in the frontal plane?

1. Center Edge Angle: Measures the extent to which the acetabulum covers the top of the femoral head

(Normal: ~25-35º)

1. What angle is being shown here in the horizontal plane?

2. An increased angle can be a result from?

1. Acetabular anteversion angle: Measures the extent to which the acetabulum covers the front of the femoral head

(Normal: ~20º)

2. A reduced center edge angle

1. In IR (Femoral-on-pelvic), what is the roll and glide?

1. Medial Roll & Lateral Glide

1. In adduction (Femoral-on-pelvic), what is the roll and glide?

1. Inferior & Med Roll with a Superior & Lat Glide

1. In flexion (Femoral-on-pelvic), what is the roll and glide?

1. Spin

1. Excessive Genu Valgum does what to the q-angle?

1. Increases the Q-angle

*(Normal: 10-15º; Abnormal: >20º)

What is this called?

genu recurvatum

1. In OKC Tibal-on-femoral extension, what is the roll and glide?

2. What movement at the tibia must occur for the screw-home mechanism to work?

1. Tibial Anterior roll & Anterior Glide

2. ER during the last 30-0º (due to medial femoral condyle curve)

1. In CKC Femoral-on-tibial flexion, what is the roll and glide?

1. Femoral Posterior roll & Anterior glide

What plane of motion and what axis?

Frontal Plane and Anterior-Posterior Axis

What plane of motion and what axis?

Transverse Plane and Longitudinal Axis

What axis?

What 3 motions for Pronation?

What 3 motions for Supination?

Oblique Axis

Eversion + Abduction + Dorsiflexion
Inversion + Adduction + Plantar Flexion

What stance is this according to Ranchos Los Amigos?

Terminal Stance

What stance is this according to Ranchos Los Amigos?

Initial Swing

What stance is this according to Ranchos Los Amigos?

Pre Swing

What stance is this according to Ranchos Los Amigos?

Terminal Swing

What stance is this according to Ranchos Los Amigos?

Mid Stance