This project will be a Randomized clinical trial conducted to check the effect of paraffin wax bath with joint mobilization technique in rehabilitation of post-traumatic stiff knee joint. Study duration will be of 8 months, convenient sampling was done, subject following eligibility criteria from Jinnah Hospital Lahore, will be randomly allocated in two groups, baseline assessment was done, Group A participants were given baseline treatment along with paraffin wax bath therapy and Maitland knee joint mobilization, Group B participants will be given baseline treatment along with Maitland knee joint mobilization. Assessments will done in 4th week and 8th week via, Numeric pain rating scale, goniometer, western Ontario and McMaster universities osteoarthritis index,4 sessions per week will given, data will analyzed by using SPSS version 25.

Knee stiffness is common problem post traumatically due to process of inhibition often occurs in the early post-injury phase. This leads to the initiation of muscle atrophy within hours of the cessation of normal voluntary muscle activation further; this can result in an increase in the viscosity of synovial fluid within the joint, which provides more resistance to motion. Maitland mobilization aims to reestablish the spinning, gliding and rolling motions of the two joints. Although paraffin bath therapy has various effects such as analgesia, reducing chronic inflammation, and increasing connective tissue elasticity, it is non-invasive and has few side effects. Paraffin wax therapy, combined with exercises and the use of splints, has also been found helpful in restoring the range of movement. The current study is to explore the effect of parrafin wax bath therapy in rehabilitation of posttrumatic stiff knee range of motion, pain and functional status, and emphasize the importance of parrafin wax bath therapy adjunct with mobilization technique in treatment of knee stiffness

Inclusion Criteria:

• Age 22-40 yrs.
• Both Male and female
• Fracture of unilateral knee joint.
• Subject with 3-6 month after injury
• Subjects with post traumatic stiffness of knee joint having a minimum of 70º knee flexion

Exclusion Criteria:

• Recent injuries on knee or on adjacent areas.
• Neurological problems
• Subject having polyarthritis, bleeding disorders, tumors, local infection, peripheral vascular disease, leg-length discrepancy of more than one-half inch
• Any non-traumatic cause of fractures
• Non traumatic cause of knee stiffness
• Malignancy