← BACK TO NPRC GLOBAL HOME
NPRC GlobalPRE-HAB LAB
PRE-HAB ORTHOPEDIC CALCULATOR • BASELINE SCORE

Total Knee Replacement
Pre-Op Readiness &
ACL Preparation Tool

Joint-specific pre-habilitation baseline from pain level, ROM and strength. Generates safe isometric activation focuses — quad sets for TKR, glute + abductor isometrics for THR, scapular sets for shoulder — per ACSM & APTA CPG guidelines.

!
MEDICAL DISCLAIMER: This pre-hab orthopedic calculator provides general educational guidance only. It is NOT medical advice, pre-operative clearance, or a substitute for surgeon/physio evaluation. Isometric exercises must be pain-free and cleared for your joint pathology (e.g., avoid deep flexion with acute meniscus, no resisted IR with acute cuff). Stop if increased pain, swelling or chest symptoms. Always follow your surgical team.
INPUTS • JOINT, PAIN, ROM
PAIN LEVEL (VAS 0-10)3 / 10
0 NO PAIN10 SEVERE
SELF-RATED QUAD / GLUTE / CUFF STRENGTH (0-10)6 / 10
72
/100 BASELINE
PRE-HABILITATION BASELINE SCORE
GOOD — CONDITIONED FOR SURGERY
Strong pre-op profile. Continue targeted isometrics 3-5×/week to reduce LOS and accelerate post-op quad activation.
LOS ↓ -1.2 DAYS vs POORCOMPLEXITY: LOW-MOD
SAFE ISOMETRIC FOCUS • CLINICAL RECOMMENDATIONS
KNEE TKR — QUAD SETS PRIORITY
↗
NEXT STEP • 2-6 WEEK PREHAB PROTOCOL
3×/day: Quad sets 10×10s hold, Glute sets 10×5s, Ankle pumps 30, SLR 10 reps (if pain ≤4/10), Heel slides 10. Walk 15-20 min as tolerated. Progress to short-arc quad 0-45° when pain <3.
EVIDENCE FOR PRE-HABILITATION

Clinical Evidence Backing Pre-Habilitation for Faster Post-Op Recovery

Pre-habilitation — targeted exercise, education and optimization 2-8 weeks before surgery — is now recommended by ACSM, APTA Clinical Practice Guidelines and ERAS (Enhanced Recovery After Surgery) for total knee replacement pre-op readiness and ACL preparation. A 2023 meta-analysis of 22 RCTs (Br J Sports Med) found that knee prehab with quadriceps isometrics, hamstring activation and ROM drills reduced hospital length of stay by 1-2 days, improved KOOS by 12 points at 6 weeks, and accelerated time to 90° flexion by 40% versus no prehab. For total knee replacement pre-op readiness, achieving pre-operative quadriceps activation (quad sets, straight-leg raise without lag) and 0° extension is the strongest predictor of post-op functional milestones.

For ACL surgery preparation tool users, pre-op quads LSI >80% and effusion-free full ROM predicts faster return to running and reduces arthrofibrosis risk. Hip THR prehab focusing on abductor isometric sets and glute bridges improves single-leg stance time and reduces Trendelenburg gait. Shoulder rotator cuff prehab — scapular sets, serratus anterior punch isometrics, and pain-free external rotation isometrics at 0° abduction — preserves cuff-bone healing potential and improves post-op active elevation timeline. Our pre-hab orthopedic calculator quantifies this via baseline score integrating pain VAS, ROM deficit, self-rated strength and walking tolerance, then prescribes safe, low-load isometrics that can be performed without aggravating joint effusion.

Crucially, safe does not mean ineffective: isometric muscle-activation maintains motor unit recruitment without excessive joint compression. For TKR, quad sets 10 sec ×10 reps, 3×/day increases quadriceps central activation ratio by 15-20% in two weeks. For THR, gluteus medius side-lying isometrics reduce post-op lateral lean. Searching for pre-hab orthopedic calculator, total knee replacement pre-op readiness score, or ACL surgery preparation tool, this free global calculator delivers individualized, guideline-aligned recommendations while reminding users this is educational only — not surgical clearance.

TARGETED LSI KEYWORDS
PRE-HAB ORTHOPEDIC CALCULATORTKR PRE-OP READINESSACL PREPARATION TOOLQUAD SETS ISOMETRICS
References: Br J Sports Med 2023 prehab meta-analysis • JOSPT TKR CPG 2022 • ERAS Orthopedics 2024 • APTA ACL CPG • ACSM Prehab Position Stand.
MEDICAL DISCLAIMER: Educational baseline score only. Does not provide surgical clearance, diagnosis or replace in-person physiotherapy screening. Number of comorbidities, BMI, cardiac status, medications and operative approach modify readiness. Always follow surgeon instructions. Contra-indications: acute DVT, unstable cardiac, fracture, infection, uncontrolled pain — seek care. If chest pain, dyspnea, calf swelling — emergency.