Lumbar degenerative disc disease and discogenic low back pain is comparatively common and disabling musculoskeletal condition. McKenzie's extension protocol is considered to be the gold standard physical therapy treatment for persons with acute discogenic low back pain, however the evidence is deficient in terms of additive benefits of sustained natural apophyseal glides in the management of discogenic low back pain. Thus, the current study will not only look into the positive effects of McKenzie's extension protocol in the management discogenic low back pain, but will also look into the additive benefits of sustained natural apophyseal glides in combination with McKenzie's extension protocol in the management of discogenic low back pain.

Inclusion Criteria:

• Both male and female participants
• aged 18-50 years old
• low back pain intensity less than 80/100mm on visual analogue scale
• positive centralization phenomenon
• low signal intensity of IV disc on T2 - weighted MRI
• high intensity zone towards the posterior aspect of the disc on MRI

Exclusion Criteria:

Individuals with and any musculoskeletal, metabolic, or neurological disorders that may impair gait, postural stability or sensory integrity will be excluded from the study.

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