Table 2.

Etiology

Ref.	Congenital femoral deficiency	Achondroplasia	Post-traumatic	Hemihypertrophy	Ollier disease	Miscellaneous
Hammouda et al[32]	10	6	5	3	2	5
Szymczuk et al[30]	30	-	-	-	-	-
Iliadis et al[29]	5	2	7	5	1	23
Nasto et al[27]	4	-	4	-	3	15
Tomaszewski et al[28]	-	-	2	-	-	3

In brackets measurement unit; Data are reported as absolute values.