Congenitally limited joint mobility

Genu recurvatum is a deformity in the knee joint, so that the knee bends backwards. In this deformity, excessive extension occurs in the tibiofemoral joint. [Source: Wikipedia ]

May Be Caused by
Duchenne muscular dystrophy
Neuromuscular disorder
Periarticular exostosis
Periarticular synostosis
Radioulnar synostosis syndromes
Aase-Smith syndrome
Antley-Bixler syndrome
Apert syndrome
Aplasia cutis congenita
Brachmann-de Lange syndrome
Bruck syndrome with congenital contractures
Cerebro-oculo-facio-skeletal syndrome
Chondrodysplasia punctata Conradi-Hünermann type
Chondrodysplasia punctata rhizomelic type
Cockayne syndrome
Contractural arachnodactyly
Diastrophic dysplasia
Distal arthrogryposis type 2A
Dyggve-Melchior-Clausen dysplasia
Dysplasia epiphysealis hemimelica
Dyssegmental dysplasia
Ellis-van Creveld syndrome
Fabry disease
Familial dwarfism with stiff joints
Farber disease
Femoral hypoplasia-unusual facies syndrome
Fetal akinesia deformation sequence
Fetal alcohol syndrome
Fibrodysplasia ossificans progressiva
Frontometaphyseal dysplasia
Geleophysic dysplasia
GM1 gangliosidosis
Hereditary multiple exostoses
Infantile multisystem inflammatory disease
Juvenile diabetes
Kniest dysplasia
Kuskokwim syndrome
Léri pleonosteosis
Macrodystrophia lipomatosa
Madelung deformity
Marden-Walker syndrome
Mesomelic dysplasia Nievergelt type
Metaphyseal chondrodysplasia
Metaphyseal chondrodysplasia Jansen type
Metatropic dysplasia
Mietens-Weber syndrome
Multiple epiphyseal dysplasia
Multiple synostosis syndrome
Nail-patella syndrome
Osteogenesis imperfecta
Otopalatodigital syndrome type 1
Otopalatodigital syndrome type 2
Parastremmatic dysplasia
Popliteal pterygium syndrome
Progressive pseudorheumatoid chondrodysplasia
Pseudodiastrophic dysplasia
Rigid spine syndrome
Schwartz-Jampel syndrome
Seckel syndrome
Spondyloepimetaphyseal dysplasia
Spondyloepiphyseal dysplasia tarda
Spondylometaphyseal dysplasia
Stickler syndrome
Symphalangism-surdity syndrome
Trisomy 13
Trisomy 18
Trisomy 8
Weill-Marchesani syndrome
Winchester syndrome
XXXXX syndrome
XXXXY syndrome
Zellweger syndrome