Muscle HypotoniaJointsMusclesMuscle, SkeletalMuscle ProteinsMuscle, SmoothKnee JointAbnormalities, MultipleMuscle Fibers, SkeletalMuscle, Smooth, VascularIntellectual DisabilityMuscle ContractionMuscle DevelopmentJoint DiseasesFaciesSyndromeFinger JointPrader-Willi SyndromeMuscle FatigueAnkle JointMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchMyopathies, Structural, CongenitalHip JointMyopathies, NemalineMuscular DiseasesMyocytes, Smooth MuscleTarsal JointsMitochondria, MuscleMuscle HypertoniaElectromyographyDevelopmental DisabilitiesNeck MusclesWrist JointOculomotor MusclesMicrocephalyAtaxiaMuscle SpindlesMuscle, StriatedMuscle RelaxationMuscle WeaknessRespiratory MusclesJoint CapsulePapillary MusclesSacroiliac JointMyopathy, Central CoreQuadriceps MuscleChromosomes, Human, XPhenotypeAbdominal MusclesChromosome Deletion