Intermediate Knee Overuse Rehabilitation

Patellar mobility preserved without pain,Quadriceps set activation achieving full tibiofemoral extension,Joint effusion less than 20cc difference from contralateral knee,Pain level maintained below 3/10 during weight-bearing activities,MCL/LCL medial-lateral stability within grade 1 limits,Protected weight-bearing tolerance established

→ Advance to: Early Mobility

Passive knee flexion ROM 0-90 degrees achieved,Active knee extension lag less than 5 degrees,Meniscus loading tolerance without pain or clicking,Patellofemoral tracking pain-free during active ROM,Cartilage protection during low-load exercises,Quadriceps central activation ratio greater than 0.6

→ Advance to: Controlled Loading

Passive knee flexion ROM 0-110 degrees achieved,Full active knee extension achieved,Weight-bearing tolerance without assistive device,Hamstring and quadriceps co-contraction demonstrating tibiofemoral stability,Patellar tendon loading tolerance without anterior knee pain,Single leg stance balance greater than 20 seconds

→ Advance to: Progressive Strengthening

Passive knee flexion ROM 0-120 degrees achieved,Quadriceps isokinetic strength at 50% of contralateral side,Hamstring isokinetic strength at 60% of contralateral side,LCL/MCL stability confirmed at full extension and 30 degrees flexion,Posterior drawer test showing less than 5mm tibial step-off deficit (PCL protection),Cycling on stationary bike 10 minutes without swelling

→ Advance to: Intermediate Strengthening

Full passive knee ROM 0-135 degrees achieved,Quadriceps isokinetic strength at 60% of contralateral side,Single leg mini squat to 45 degrees knee flexion without valgus collapse,ACL graft protection demonstrated through proper landing mechanics,Medial and lateral meniscus loading without pain during functional movements,Patellofemoral joint reaction forces tolerated during closed-chain exercises

→ Advance to: Advanced Strengthening

Quadriceps isokinetic strength at 70% of contralateral side,Hamstring isokinetic strength at 75% of contralateral side,Single leg hop for distance greater than 80% of contralateral side,Functional movement patterns without compensation,Posterolateral corner (LCL-PTCL complex) stability confirmed,Articular cartilage loading progression to moderate impact activities

→ Advance to: Plyometric Training

Double leg vertical jump with symmetric takeoff and landing,Single leg hop hold for 10 seconds without instability,Agility ladder drills at 50% speed without pain,Patellofemoral symptoms absent during high-impact activities,Lachman test showing less than 3mm tibial translation (ACL protection),Isokinetic testing quadriceps at 75% contralateral side

→ Advance to: Sport-Specific Training

Single leg hop for distance greater than 90% of contralateral side,Triple hop for distance symmetry greater than 90%,Cutting and pivoting maneuvers at 75% speed without instability,Quadriceps isokinetic strength at 80% of contralateral side,KOOS sports and recreation subscale score greater than 70,No reactive knee effusion following training activities

→ Advance to: Return to Training

Full sports-specific training participation without restrictions,Quadriceps isokinetic strength at 85% of contralateral side,Timed single leg hop test symmetry greater than 90%,Lysholm score greater than 85,Patellar stability confirmed through apprehension test negative,Posterior stability confirmed through posterior drawer test within normal limits

→ Advance to: Competitive Return Preparation

Quadriceps isokinetic peak torque at 90% of contralateral side,IKDC subjective knee evaluation score greater than 85,Sport-specific functional testing at full speed without compensation,All knee ligament stability tests within normal limits,Meniscal tests negative for mechanical symptoms,Subjective confidence rating greater than 8/10 during sport activities

→ Advance to: Return to Competition

Isokinetic quadriceps strength at 95% of contralateral side,Hamstring to quadriceps ratio within 50-70% range,Full competitive game participation completed without setbacks,KOOS quality of life subscale score greater than 75,No evidence of articular cartilage degeneration symptoms,Satisfactory performance on return-to-sport functional battery

→ Advance to: Maintenance and Discharge

IKDC final score greater than 90,Symmetric limb symmetry index on all hop tests,Complete return to prior activity level,No recurrent swelling or instability episodes,Patient-reported outcome measures meeting discharge criteria,Maintenance program understanding and compliance demonstrated

→ Advance to: Protocol Complete

Sustained quadriceps strength symmetry greater than 95%,Full training load tolerance without modification,No ongoing knee symptoms affecting performance,Functional movement screen score 17 or greater,Continued progression of sport-specific power and agility,Patient satisfaction with outcome greater than 8/10

→ Advance to: Protocol Complete

Final Lysholm score greater than 90,Quadriceps and hamstring strength symmetric to contralateral side,Complete return to unrestricted athletic activity,All knee structures (ACL, PCL, MCL, LCL, meniscus, cartilage, patella) functionally stable,No activity modifications required due to knee condition,Discharge criteria met with individualized maintenance program

→ Advance to: Discharge