Enter your details
Example data table
| Profile | Age | BMI | Procedure | Rehab | Complications | Estimated full recovery |
|---|---|---|---|---|---|---|
| Active, strong support | 55 | 25 | Primary | Excellent | None | ~12–18 weeks |
| Average fitness, desk work | 68 | 30 | Primary | Good | None | ~15–23 weeks |
| Higher BMI, smoker | 72 | 38 | Primary | Fair | Minor | ~22–34 weeks |
| Revision with comorbidities | 76 | 33 | Revision | Good | Major | ~30–50+ weeks |
These examples are illustrative; individual plans vary.
Formula used
The calculator starts with baseline milestone times (in weeks) for an uncomplicated primary hip replacement. It then applies a multiplier factor and a small additive offset:
EstimatedWeeks = (BaselineWeeks × Factor) + AddWeeks
Factor increases with age, BMI, comorbidities, revision surgery, lower fitness, and weaker rehab adherence. AddWeeks accounts
for events that often shift all milestones, such as complications.
A range is shown by applying an uncertainty band that widens when more risk factors are present:
Lower = Weeks × (1 − Uncertainty), Upper = Weeks × (1 + Uncertainty)
Uncertainty starts at about 18% and can increase with risk factors.
How to use this calculator
- Enter age, height, and weight; choose auto or manual BMI.
- Select procedure type, approach, and fixation based on your plan.
- Choose baseline fitness, rehab adherence, and home support honestly.
- Tick any health factors that apply, and note complications if present.
- Press Calculate, review ranges, then download CSV or PDF to share.
FAQs
1) When can I walk without a walker?
Many people transition from walker to cane within several weeks, but timing depends on strength, balance, pain control, and your clinician’s clearance. Follow weight-bearing and gait instructions to reduce falls.
2) When is it safe to drive again?
Driving usually requires adequate reaction time, minimal narcotic use, and surgeon approval. Side of surgery and vehicle type matter. Always confirm with your surgeon and insurer before driving.
3) How long until I return to work?
Desk work may resume sooner than physically demanding jobs. The return depends on stamina, gait safety, and your workplace duties. Ask your clinician about restrictions, lifting limits, and phased return options.
4) Does rehab really change recovery time?
Yes. Consistent rehab improves strength, range of motion, balance, and confidence. Better adherence often speeds safe mobility and reduces compensations that can cause back or knee pain.
5) What slows recovery the most?
Common factors include complications, revision surgery, poor rehab adherence, smoking, poorly controlled diabetes, and low baseline fitness. Sleep, nutrition, and gradual activity progression also matter.
6) When can I return to sports?
Low-impact activities often resume earlier than high-impact ones. Clearance depends on healing, strength, and joint stability. Your surgeon may recommend avoiding certain impact sports to protect the implant.
7) Is this calculator a substitute for medical advice?
No. It provides educational estimates based on common recovery patterns. Your individual timeline should be guided by your surgeon and physiotherapist, especially if you have complications or new symptoms.