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Alien hand syndrome (AHS) or Dr. Strangelove syndrome [1] is a category of conditions in which a person experiences their limbs acting seemingly on their own, without conscious control over the actions. [2] There are a variety of clinical conditions that fall under this category, most commonly affecting the left hand. [3]
Symbrachydactyly is a congenital abnormality, characterized by limb anomalies consisting of brachydactyly, cutaneous syndactyly and global hypoplasia of the hand or foot. [1] In many cases, bones will be missing from the fingers and some fingers or toes may be missing altogether.
A phantom limb is the sensation that an amputated or missing limb is still attached. It is a chronic condition which is often resistant to treatment. [1] When the cut ends of sensory fibres are stimulated during thigh movements, the patient feels as if the sensation is arising from the non-existent limb.
Gender, side of limb loss, and etiology of amputation have not been shown to affect the onset of phantom limb pain. [2] One investigation of lower limb amputation observed that as stump length decreased, and therefore length of the phantom limb increased, there was a greater incidence of moderate and severe phantom pain. [8]
A supernumerary phantom limb is the sensation of having an extra limb or body part despite no such limb actually existing. It is an uncommon syndrome, usually due to some kind of brain injuries in the somatosensory cortex or in some parts of the right hemisphere of the brain, usually due to a stroke in the brain. [13]
Liebenberg syndrome is a rare autosomal genetic disease that involves a deletion mutation upstream of the PITX1 gene, which is one that's responsible for the body's organization, specifically in forming lower limbs. [2] In animal studies, when this deletion was introduced to developing birds, their wing buds were noted to take on limb-like ...
Familial opposable triphalangeal thumb duplication is a limb malformation syndrome and a type of pre-axial polydactyly, characterized by having duplicated opposable triphalangeal thumbs. This condition can be a symptom of other genetic disorders, such as Holt–Oram syndrome and Fanconi anemia .
Severe limb injuries in which the efforts to save the limb fail or the limb cannot be saved. Traumatic amputation (an unexpected amputation that occurs at the scene of an accident, where the limb is partially or entirely severed as a direct result of the accident, for example, a finger that is severed from the blade of a table saw)