Post-Surgical Rehabilitation in Boise & Nampa

What is post-surgical rehabilitation?

Post-surgical rehabilitation is physical therapy organized around what a specific operation will and will not tolerate at each stage of healing. It is not a generic exercise program applied to a person who happens to have had surgery. A repaired rotator cuff, a reconstructed ligament, a replaced joint and a decompressed nerve each heal on different timelines, tolerate different forces, and fail in different ways — so the protocol, not the diagnosis, sets the boundaries.

Inside those boundaries the work moves through recognisable phases. First, protection and early motion: managing swelling, keeping the joints above and below the surgical site moving, and doing whatever range of motion the surgeon has cleared. Then restoration: getting full motion back before scar tissue makes the decision for you, and switching the operated muscles back on. Then loading: rebuilding strength that has genuinely gone. Then, if the goal demands it, capacity — returning to a job, a hobby, or a sport with testing rather than optimism, which is where our return-to-sport testing comes in.

This page is the hub. It covers what the evidence supports across post-operative rehab generally; the procedure-specific pages — ACL reconstruction, rotator cuff, knee arthritis and joint replacement — go deeper on individual operations.

Does prehab before surgery actually help?

Prehabilitation — training in the weeks before an operation — has real randomised evidence behind it for post-operative pain after knee replacement, and much weaker evidence for everything else it is sold on. A 2025 meta-analysis pooled 21 randomised controlled trials covering 2,150 patients (1,167 who did prehab, 983 controls). Pain on the visual analogue scale was lower in the prehab groups at one month (mean difference −1.03, 95% CI −1.50 to −0.56), at three months (−1.23) and at six months (−1.38).^[1]

The same analysis is where the overselling stops. Hospital length of stay was not significantly reduced (mean difference −0.56 days, 95% CI −1.25 to 0.13, p=0.11), and knee function barely moved: a 2.55-degree improvement in knee flexion at three months, with no significant gain in extension or in flexion at one month. The reviewers flagged significant heterogeneity across trials conducted in 13 countries with non-standardised exercise protocols.^[1]

Our reading, which we say out loud to patients: prehab is worth doing if you have four to six weeks, mainly for pain and because you arrive with a stronger limb, a rehearsed home program and a therapist who already knows you. It is not a reason to delay a needed operation, and it will probably not get you out of the hospital sooner.

Why does the operated limb get so weak, and how long does strength take to come back?

Strength after surgery collapses further and returns more slowly than almost anyone is warned about, and the reason is only partly the muscle itself. Pain, swelling and joint irritation suppress the nervous system's ability to fully recruit a muscle — the muscle is still there, but the signal to it is throttled. That is why a quadriceps can look nearly normal on a scan and still fail to hold a straight-leg raise two weeks after a knee replacement.

The recovery curve has been mapped. A systematic review with meta-analysis of knee extensor strength after total knee arthroplasty found the operated leg significantly weaker than the non-operated leg at three months (standardised mean difference −0.21, 95% CI −0.36 to −0.05) on moderate-certainty evidence; by six months the gap had narrowed to a non-significant −0.10; and at one year the operated leg had improved further, though that estimate carried very low certainty. Studies cited within the review put quadriceps strength at roughly 70–80% of healthy controls a year after surgery.^[2]

Two practical consequences follow. The first is that the interesting comparison is not "does my knee hurt less than last month" but "how does this leg measure against the other one" — which is why we test rather than ask. The second is that rehab does not end when formal visits do. A limb that is 80% of its counterpart at discharge is a limb with months of productive strengthening still in front of it, and the person most likely to close that gap is the one who was handed a plan instead of a handshake.

When is it safe to start moving after surgery?

Early motion after surgery is safe when the surgeon's protocol allows it, and the best-studied example suggests the fear of moving too soon is often larger than the risk. A 2023 meta-analysis of 13 randomised controlled trials covering 1,082 arthroscopic rotator cuff repairs — 623 patients in early motion protocols, 459 in delayed — found no statistically significant difference in retear rates between early and delayed mobilization, whether the early motion was passive or active. Range of motion favoured the early groups: forward flexion was better with early passive motion, and both forward flexion and external rotation were better with early active motion.^[3]

The caveats matter as much as the headline. The range-of-motion differences the reviewers found were small — on the order of 1.4 to 1.6 degrees — and they noted that the minimal clinically important difference for these measures is not well established, that rehabilitation protocols varied between trials, and that follow-up was mostly capped at 12 months.^[3] The trials also studied small to large tears; massive tears are a different conversation, and separate work has raised concern about early motion in the largest repairs.

None of that authorises anyone to move faster than their own protocol. It does mean that when a surgeon has cleared motion, taking it is the right call, and that a limb held still out of caution nobody actually prescribed is losing ground for no reason.

Does supervised rehab beat doing it at home?

For uncomplicated knee replacement recovery, supervised outpatient physical therapy has not outperformed a well-designed home program in randomised trials — and pretending otherwise would be selling visits. A systematic review of 18 randomised trials covering 1,739 total knee replacement patients found physiotherapy exercise improved physical function (standardised mean difference −0.37, 95% CI −0.62 to −0.12) and pain (−0.45, 95% CI −0.85 to −0.06) at three to four months compared with minimal intervention, but those benefits were no longer evident at 12 months, and there was no difference in functional outcome between home-based and outpatient provision at any timepoint.^[4]

The CORKA trial tested the harder case. It randomised 621 patients specifically identified as being at risk of a poor outcome after knee arthroplasty: 309 to a home-based rehabilitation package (median five sessions) and 312 to usual outpatient care (median four). At 12 months the difference on the Late Life Function and Disability Index was 0.49 points (95% CI −0.89 to 1.88, p=0.48) — neither statistically nor clinically significant.^[5]

So what is a clinic for? For the situations those trials deliberately excluded or were never powered to answer: revision and complex procedures, repairs with strict weight-bearing or range-of-motion restrictions, joints that are not progressing on schedule, athletes who need objective clearance criteria, and people whose home program has quietly stopped happening. It is also worth saying that these findings come overwhelmingly from knee replacement research; extrapolating them to shoulder, spine or ligament reconstruction rehab is an assumption, not a finding. What supervision reliably buys is measurement, dosage and course correction — not magic.

What warning signs after surgery need the surgeon, not the therapist?

Most post-operative recoveries are uneventful, but a short list of symptoms belongs with your surgical team the same day rather than at your next therapy visit. Call the surgeon's office, or seek urgent care, for any of these:

• Calf pain, tenderness, or new one-sided swelling and warmth in the leg — possible deep vein thrombosis. In a series of 8,885 elective total hip replacements, symptomatic venous thromboembolism occurred in 1.11% of patients (0.59% DVT, 0.53% pulmonary embolism); uncommon, but time-critical^[6]
• Sudden shortness of breath, chest pain, or a racing heart — treat as an emergency and call 911
• Fever, chills, spreading redness, increasing wound drainage, or a wound that opens — possible surgical site infection
• Pain that is escalating rather than gradually settling, especially if it is out of proportion to the activity
• New numbness, pins and needles, or a limb or foot you cannot lift or control
• A pop, a sudden loss of motion, or a limb that gives way after a fall or a wrong movement

Part of what a therapist does after surgery is watch for these between your surgical follow-ups, because you see us more often than you see the surgeon. Raising something and being told it is normal is a good outcome, not a wasted question.

What to expect at your first post-op visit

1. The paperwork review. Operative report, weight-bearing status, range-of-motion limits, brace settings and the surgeon's timeline — read before we touch anything. Bring whatever you were given at discharge.
2. A look at the surgical site. Incision and wound check, swelling, and a screen for the red flags above, so anything that belongs with the surgeon is flagged the same day.
3. Baseline measurements. Range of motion, side-to-side strength where it is safe to test, and function — how you are walking, transferring, sleeping and managing at home.
4. The first block of work. Swelling control, permitted motion, activation drills, and correcting how you are using the crutches, walker or sling — small mechanical fixes that pay off for weeks.
5. A plan with dates in it. What we are doing this phase, what has to be true to progress to the next one, and how often you actually need to be seen. Most post-operative plans run every one to two weeks over 6–12 weeks, longer for ligament reconstructions and complex repairs.