Intermediate Knee Overuse Rehabilitation

Quadriceps activation with isolated VM/VL contraction >50% of contralateral side,Full knee extension symmetry within 5 degrees of contralateral knee,Patellar mobility preserved in all directions (superior, inferior, medial, lateral),MCL/LCL stress testing reveals no increased laxity compared to contralateral side,Meniscal compression/distraction tests negative for joint line tenderness,Pain at rest <3/10 on VAS scale

→ Advance to: Early Rehabilitation

Knee flexion active ROM 0-90 degrees achieved,Hamstring curl resistance 50% body weight for 10 reps without increased joint swelling,Weight bearing tolerance equal bilaterally during stance phase,Patellofemoral joint tracking without crepitus during active extension,Tibiofemoral joint effusion grade 0-1 (minimal swelling),Quadriceps force reproduction accuracy >80% at 30% MVIC

→ Advance to: Early Rehabilitation

Knee flexion active ROM 0-110 degrees achieved,Single leg stance time >30 seconds on affected limb without compensation,Patellar tendon loading tolerance without anterior knee pain,MCL medial stability grade 1+ (1A) on valgus stress test,LCL lateral stability grade 1+ (1A) on varus stress test,6-minute walk test distance within 20% of age-predicted norm

→ Advance to: Intermediate Rehabilitation

Knee flexion active ROM 0-120 degrees with full extension,Quadriceps strength >60% of contralateral side at 60 deg/sec isokinetic,Hamstring strength >70% of contralateral side at 60 deg/sec isokinetic,Meniscal McMurray test negative for click/catch with pain,Cartilage loading tolerance during partial squat 0-45 degrees without crepitus,Patellofemoral compressive force tolerance during leg press 50% body weight

→ Advance to: Intermediate Rehabilitation

Single leg squat depth to 60 degrees knee flexion without valgus collapse,Hip abduction strength >65% of contralateral side,Hip external rotation strength >60% of contralateral side,ACL anterior drawer test <5mm increased translation vs contralateral,PCL posterior drawer test <5mm increased translation vs contralateral,Functional Movement Screen knee domain score >4/7

→ Advance to: Intermediate Rehabilitation

Knee flexion active ROM 0-130 degrees with full extension,Bilateral hop for distance >90% limb symmetry index,Patellofemoral tracking assessment shows no medial collapse during descent,Tibiofemoral rotation within normal limits (5-10 degrees internal/external),Proprioceptive accuracy on affected limb >75% of contralateral side,Y-Balance anterior reach >90% of limb length

→ Advance to: Advanced Rehabilitation

Knee flexion active ROM 0-135 degrees with functional full extension,Quadriceps strength >70% of contralateral side at 180 deg/sec isokinetic,Copenhagen hop test >85% limb symmetry index,Meniscal loading tolerance during pivoting activities without pain,Cartilage tolerance during impact activities at low intensity,Patellar instability test negative for apprehension sign

→ Advance to: Advanced Rehabilitation

Single leg hop for time <10% slower than contralateral side,Agility ladder completion without knee valgus deviation,ACL/PCL Lachman test grade 1 (3-5mm increase) maximum,Hamstring strain prevention: hamstring curl eccentric >40% body weight,Patellofemoral pain syndrome resolution: squat without anterior knee pain,Lower Extremity Functional Scale score >70/80

→ Advance to: Advanced Rehabilitation

Knee flexion active ROM 0-140 degrees equal to contralateral,Quadriceps strength >75% of contralateral at all isokinetic speeds,Triple hop for distance >90% limb symmetry index,Running progression: 5 minutes at 6 mph without pain,MCL/LCL functional stability during cutting maneuvers,Patellar tendinopathy resolution: single leg decline squat pain <2/10

→ Advance to: Advanced Rehabilitation

Single leg landing from 12-inch box with no valgus collapse,Side-hop test >90% limb symmetry index,Progressive running program: 10 minutes at 7 mph cumulative,Tibiofemoral rotational stability during pivoting confirmed,Cartilage loading progression: jumping rope 5 minutes tolerated,Hip/knee coordination during stair negotiation optimized

→ Advance to: Advanced Rehabilitation

Figure-8 running pattern completed in <12 seconds without pain,Knee effusion absent during and after activity,Quadriceps strength >80% of contralateral side at 90 deg/sec isokinetic,Meniscal functional stability during twisting activities,Patellofemoral joint forces <3x body weight during running,Proprioceptive balance index on affected limb >90% of contralateral

→ Advance to: Return to Activity

Knee ROM equal bilaterally (0-140 degrees flexion, 0 degrees extension),Single leg hop for distance >95% limb symmetry index,Running sprint progression: 40 yards at 80% effort without compensation,ACL/PCL pivot shift test negative or grade 1,MCL valgus stress test grade 0 at 30 degrees knee flexion,LCL varus stress test grade 0 at 30 degrees knee flexion

→ Advance to: Return to Activity

Cut-and-run drill completed without knee instability symptoms,Knee Outcome Survey activities of daily living scale >90%,Sport-specific patellofemoral loading tolerated (cycling, running, jumping),Cartilage impact progression: drop landing from 24-inch box x10 tolerated,Hamstring-to-quadriceps ratio >60% for eccentric quadriceps,Patient-Specific Functional Scale knee-related goals >8/10

→ Advance to: Return to Sport

Unrestricted cutting and pivoting at 50% speed for 15 minutes,Single leg vertical hop test >90% limb symmetry index,Quadriceps strength >85% of contralateral side at all velocities,Knee confidence restored: Knee Outcomes Survey score >85%,Patellar tracking maintained during high-intensity activities,Functional Movement Screen overall score >16/21

→ Advance to: Return to Sport

Agility training: 45-degree cuts at 75% speed without symptoms,Knee stability confirmed during single-leg landing from sport-specific heights,Meniscal stress test negative: knee flexion weight bearing squat pain-free,Running sprints: 20-yard bursts at 90% effort x5 without swelling,Patellofemoral symptoms absent during deceleration activities,Isokinetic quadriceps power >85% of contralateral side

→ Advance to: Return to Sport

Full-speed sport-specific drills completed without compensation,Unrestricted jumping and landing activities tolerated,ACL/PCL stability confirmed: KT-1000 difference <3mm,Knee Return to Sport Index score >75% in all categories,Patellofemoral mechanics optimized during high-impact activities,Lower extremity power output >85% of contralateral side

→ Advance to: Return to Sport

Full practice participation: contact drills at 100% intensity,Sport-specific cutting/pivoting with no instability episodes,Knee effusion grade 0 after high-intensity training,Quadriceps strength >90% of contralateral side at all isokinetic speeds,Subjective knee function: IKDC subjective knee form >90 points,Patellar tendon load tolerance: eccentric drop squat 100% body weight x10

→ Advance to: Full Return

Full competition simulation completed without symptoms,Knee stability assessment: pivot shift grade 0,Return to sport criteria met: quadriceps symmetry >90%, hop tests >90%,Meniscal function preserved: twisting and jumping without mechanical symptoms,Patellofemoral symptoms absent at all activity levels,Patient satisfaction with knee function >8/10

→ Advance to: Maintenance

Knee ROM symmetry maintained at all measurements,Quadriceps strength >95% of contralateral side,Completed graduated return-to-sport protocol without setback,Knee Outcome Survey sport-specific section >95%,No recurrent swelling or instability episodes for 4+ weeks,Discharge criteria met: all outcome measures at pre-injury level or optimal function

→ Advance to: Discharge