Spondylolysis is a bone defect in the pars interarticularis of the vertebra. It usually presents bilaterally and affects L5 (85–95%). An injury in the proximal lumbar vertebrae is less common. 1– 3 ...

Routine studies have previously consisted of anteroposterior and lateral lumbar ... evaluated 69 pars defects and found that ... that the pedicle contralateral to a unilateral pars lesion ...

Objective: To determine whether the location of spondylolysis in the lumbar spine of athletes differs with biomechanical factors. Methods: Single photon emission computerised tomography and reverse ...

Those born with congenital pars defects or fractures -- abnormalities in the part of the bone in the back of the spine that keeps the joints in place -- may have their bones slip at an earlier age ...

Direct screw repair of the pars interarticularis provides a minimally invasive option for the treatment of spondylolysis in adolescent athletes with satisfactory clinical and radiological outcomes ...

These "slips" occur most commonly in the lumbar spine. ... In the late 1890s, several cadaver studies demonstrated the characteristic pars defect of isthmic spondylolisthesis, ...

Excessive extension or hinging from one segment of the lumbar vertebrae causes spondylolysis (making you a spondy), better known as stress fracture to the pars interarticularis.

The basic lesion in isthmic spondylolisthesis is in the pars interarticularis. Wiltse et al [] divided this category into three subtypes: lytic, elongated, and acute fracture. The first subtype ...

Those born with congenital pars defects or fractures -- abnormalities in the part of the bone in the back of the spine that keeps the joints in place -- may have their bones slip at an earlier age ...