valgus deformities. healthy joint, knock-knee and bow-leggedness

anatomical anatomy ankle arthritis bandiness board body bone bony bowed bowleggedness deformities deformity disease female femur foot genu health healthy hip human illustration joint knee knock knockknee leg limb medical medicine model operation orthopaedic pain phalanges proximal rickets science shape skeleton straight surgery tibia valgus varum varus vector