Page 10 - HBC Booklet - 2020

International Orthopaedics (SICOT) (2008) 32:115-119 117

Fig. 2 Anteroposterior and lat­

eral views of the lumbar spine

showing degenerative change of

the spine with spondylolisthesis

o f L3-4

But it was not until in 1963, when Newman in his review of traumatic spondylolisthesis, pathologic spondylolisthesis

319 cases, classified spondylolisthesis into five distinct and iatrogenic spondylolisthesis (following lumbar surgery

groups [I, 7]. This classification was revised in 1976 b y via laminectomy) [8, 9].

Wiltse et al. [9], and has since become th e most widely The most common type of spondylolisthesis found in

accepted classification. Other than the previous five distinct patients less than 50 years of age i s the isthmic (spondy­

groups by Newman, a sixth group has been added. Thus, lolytic) type [5, 1 OJ. It is believed that "biomechanical

present classification of spondylolisthesis i s as follows: stress", such as repetitive mechanical strain from heavy

dysplastic (congenital) spondylolisthesis, isthmic (spondy­ work and sports, causes a fatigue fracture to the pars

lolitic) spondylolisthesis, degenerative spondylolisthesis, interarticularis that allows the defective vertebra to move

Fig. 3 Plain anteroposterior and
lateral radiograph of the lumbar

spine a t 8 months post-opera­

tion, demonstrating a well-con­

solidated intertransverse bone

fusion mass (arro}vs)

I , , •

fl Springer