What are ankle joints like in the sway-back posture? {Ans: Neutral- knee joint hyperextension usually results in plantar flexion of the ankle joint but that does not occur here because of anterior deviation of the pelvis and thighs}What muscles are strong and short in the military- type posture? {Ans: Low back and hip flexors}What should the thoracic spine look like in ideal alignment? {Ans: Normal curve, slightly convex posteriorly}What are the four types of postural alignment? {Ans: Ideal, kyphosis-lordosis, flat-back, sway-back postures}What muscles are elongated or weak in the kyphosis- lordosis posture? {Ans: Neck flexors, upper back. Erector spinae, external oblique. Hamstrings are slightly elongated but may or may not be weak.}What are hips like in sway-back posture? {Ans: Hyperextended with anterior displacement of the pelvis}