276 The Nerves and Muscles of the Leg 
TABLE I. 
Table Showing the Region and Extent of Distribution of the Lumbo- 
inguinal Nerve. 
EXTENT OF DISTRIBUTION. 
— 
Type of Distribution. Slight. Moderate. Extensive. 
No. of No. of No. of 
inst. inst. inst. 
ILE AgseanogedbouoodeT 5 8 6 19 15.4% 
ANMGPHOTE Gg id. d Soo ooo ado OOC 11 36 8 55 44.7% 
IMS Gea ohato oes ee ee ela wate wae 6 15 10 31 25.2% 
Lateral and Medial........ 18 18 14.6% 
22 59 42 123 
(17.9%) (48%) (34.1%) 
From this table it will be seen that the type of distribution most com- 
monly met with is that of a moderate anterior distribution (36 instances, 
29.2%). This corresponds to the distribution commonly given as the 
“normal” in the text-books and shown on the left side of the widely 
borrowed Léveillé figure given on Plate LIV of the Hirschfeld-Leveillé 
Neurologie.” The other types of distribution are, however, met with two 
thirds of the time. A study of the association of the types of distribution 
above given with race, sex and side of body, with various types of lumbo- 
sacral plexus and with variations in the spinal column has brought to 
light no intimate relations. The following table illustrates the relations 
of origin to distribution of the lumbo-inguinal nerve. 
TABLE II. 
Frequency of Types of Distribution of the 
N. Lumbo-inguinalis. 
| | | 
Spinal Nerves from which the | Lateral. Anterior. Medial. oS 
Lumbo-inguinalis arises. | Ea 
| 43 eee ih a8 a BS = | ao 
Evan esl eS a og S rs S £ as 
LO Muon ae z | 2 | S H 1B 
7 = ica D = ica na = | 
XX, XXI 2 5 1 3 
»-O.Gt (rez! 1 ie 4 3 1 1 
(XX), XXI, XXII 1 1 1 5 2 3 8 
| | 
0O-U5, BOC | 3 3 2 8 18 3 4 10 5 3 
XXII leet lM 2| 8 1 
(¢.6.4§fe-6 cites ©6001 ok (a seta leat 2 1 
From this it will be seen that there is slight relationship between the 
origin from the plexus and the distribution of this nerve. In case of 
Paris, 1853. 
