Partial Knee Replacement
Post-Operative Physical Therapy Protocol
Click here for a comprehensive patient guide to knee replacement surgery.
General considerations:
• All times are to be considered approximate, with actual progression based upon
clinical presentation.
• Patients are full weight bearing with the use of crutches, a walker or a cane to assist
walking until they are able to demonstrate good walking mechanics.
• Early emphasis is on achieving full extension equal to the opposite leg as soon as
able.
• No passive or active flexion range of motion greater than 90 degrees for the first two
weeks.
• No two-legged biking or flexion exercises for at least two weeks. Well-leg biking is
fine.
• Regular manual treatment should be conducted to the patella and all incisions so
they remain mobile.
• Early exercises should focus on recruitment of the vastus medialis obliquus (VMO).
• No resisted leg extension machines (isotonic or isokinetic) at any point in the rehab
process.
Week 1:
• Goal is to allow the medial arthrotomy to heal and decrease swelling.
• M.D. visit after hospital discharge to change dressing and review home exercise
program.
• Icing, elevation, and aggressive edema control (i.e. circumferential massage,
compressive wraps).
• Straight leg raise exercises (standing and seated), passive and active ROM
exercises.
• OK to gently bend knee < 90 degrees 1-2x per day.
• Initiate quadricep/adduction/gluteal sets, gait training, balance/proprioception
exercises.
• Well leg cycling and upper body conditioning.
• Soft tissue treatments and gentle mobilization to the posterior musculature, patella,
and incisions to avoid flexion or patella contracture.
Week 2-4:
• M.D. visit at 14 days for suture removal and check-up.
• Continue with home program, progress flexion range of motion, gait training, soft
tissue treatments, and balance/proprioception exercises.
• Incorporate functional exercises as able (i.e. seated/standing marching, , hamstring
carpet drags, hip/gluteal exercises, and core stabilization exercises).
• Aerobic exercise as tolerated (i.e. bilateral stationary cycling as able, UBE, pool
workouts once incisions are healed.)
Week 4-6:
• M.D. visit at 4 weeks post-op.
• Increase the intensity of functional exercises (i.e. progress to walking outside,
introducing weight machines as able).
• Continue balance/proprioception exercises (i.e. heel-to-toe walking, assisted single
leg balance). Slow to normal walking without a limp.
Week 6-8:
• Add lateral training exercises (i.e. lateral steps, lateral step-ups, step overs) as able.
• Incorporate single leg exercises as able (eccentric focus early on).
• Patients should be walking without a limp and range of motion should be < 10
degrees extension and > 110 degrees flexion.
Week 8-12:
• Begin to incorporate activity specific training (i.e. household chores, gardening,
sporting activities).
• Low impact activities until after week 12.
• Patients should be weaned into a home/gym program with emphasis on their
particular activity/sport
