u/alezubri

After surgery there are two clocks running, and confusing them is one of the main reasons people either do too much too early or stop rehab too soon.

I'm a physiotherapist working in orthopaedic and postoperative rehabilitation. This is general educational information, not a diagnosis or an individual treatment plan. Your surgeon's restrictions and your own treating team come first.

This is a practical framework I use with patients. I call it the two-clock model, and the core of it is one sentence:

**Biological healing determines when certain loads become permissible. Capacity testing determines whether you are prepared to tolerate them. Neither clock is sufficient alone.**

## Clock 1: biological healing

A repaired tendon, a ligament graft, a bone cut. Each needs time, and you cannot negotiate with it.

In this phase the job isn't to prove how hard you can work. It's to protect the healing structure while keeping as much safe movement, muscle activation and general conditioning as your procedure allows.

You cannot force tissue healing to happen faster through determination alone. Appropriate loading is part of rehabilitation, but exceeding the prescribed load too early does not reliably accelerate healing and may place the repair at risk.

This clock is genuinely time-dependent. Its length depends on the procedure, the tissue, the fixation, tear size, associated injuries and your surgeon's protocol.

## Clock 2: capacity

Once you're out of the most protected phase, the calendar stops being enough.

Time remains relevant, but it can no longer tell us by itself whether the limb is ready for the next demand. Being six, nine or twelve months post-op tells us how long tissue has been healing. It doesn't tell us what the limb can handle.

From there, progression should increasingly depend on what the limb can demonstrate: range of motion, strength, endurance, movement quality, balance and control, tolerance to repeated loading, and task or sport-specific testing.

This is what the clinical guidelines describe. The ACL rehabilitation guidelines recommend progressing between stages using strength tests, hop tests and movement quality alongside time and symptoms. The shoulder consensus statement on rotator cuff repair follows the same logic: healing time first, then range, then strength, then load tolerance, adjusted for tear size and tissue quality.

## The mistake I see most

People rush clock one, then coast through clock two.

It should be the other way around:

**Be patient early. Be progressive, consistent and demanding later.**

| Surgery | What needs protecting early | What sets the pace of that phase | What should guide progression later | Broader picture |

|---|---|---|---|---|

| ACL reconstruction | The graft, plus any meniscus repair done with it | Graft type, fixation, meniscus work, symptoms, surgeon protocol | Quad strength, hop performance, movement quality, sport-specific testing | Return to pivoting sport commonly takes around 9 to 12 months, but time alone is not clearance |

| Achilles rupture | The healing tendon, and preventing excessive elongation | Operative vs non-operative care, and the loading protocol chosen | Heel-rise height and repetitions, calf strength, walking and running mechanics | Recovery continues for many months, and measurable deficits can remain for years |

| Rotator cuff repair | The tendon-to-bone repair | Tear size, tissue quality, procedure, surgeon protocol | Range first, then cuff and scapular strength, then progressive load tolerance | Larger or more complex repairs legitimately progress more slowly |

| Total knee replacement | Less about protecting a fragile repair than tendon or ligament surgery. Early priorities include extension, flexion, swelling control and muscle activation | Pre-op status, swelling, pain, stiffness, complications | Quad strength, walking, stairs, transfers, independent function | Most gains come in the first months, but strength and function can keep changing for a year or more |

## If you're stuck in the protected phase, this is what's actually in your hands

**Your permitted dose.** Too little brings stiffness and deconditioning, too much brings pain and swelling. The target isn't maximum exercise, it's the right dose.

**Swelling.** Persistent swelling can restrict movement and inhibit muscle activation. If something reliably produces a big or long-lasting swelling response, the dose needs adjusting.

**The rest of your body.** Depending on your restrictions you can often still train the other limb, your trunk, upper body and cardiovascular fitness. Letting everything else decondition makes the second half much harder.

**Sleep and food.** Healing runs on energy, protein and sleep. Not background details.

**Actually following the protocol.** Adding more exercises does not automatically produce a better recovery. The important variables are appropriate selection, dosage, consistency and progression.

In my clinical experience, many patients reach a psychological low point during the first postoperative weeks. It does not automatically mean the operation or the recovery is failing.

## Feeling better is not the same as being recovered

Pain and basic walking usually improve well before strength, endurance, power and load tolerance come back. That creates a deceptive middle stage where daily life feels almost normal but the limb still can't handle running, cutting, jumping, heavy lifting or long days.

After an Achilles rupture, substantial improvement doesn't always mean complete recovery. A narrative review reports average patient-reported scores around 82 out of 100 at one year with relatively little improvement afterwards in the studies reviewed. That doesn't predict any individual's final result, but it illustrates how incomplete recovery can persist despite real progress. Objective calf strength and heel-rise deficits may also remain for years, and long-term imaging follow-up shows lasting tendon elongation and muscle atrophy.

After a knee replacement, quadriceps weakness commonly persists for months. Recovery may continue through the first year and plateau considerably later, influenced by age, sex and BMI.

The absence of pain doesn't prove the work is finished.

## Four better questions for your team

1. How long is my protected phase, and what exactly are we protecting?

2. What restrictions apply, and what happens if I exceed them?

3. What do I need to be able to do before progressing to the next stage?

4. How will we measure that, rather than eyeball it?

Those answers are worth more than any generic week-by-week chart.

## When it may not be a normal timeline

New or worsening weakness. Pain that climbs steadily instead of settling. A joint that repeatedly gives way. Calf pain or swelling out of proportion. Fever, wound drainage, marked redness or unusual heat. Sudden loss of function. Any significant new injury.

Those need professional assessment, not comparison with strangers on a forum.

## The takeaway

Respect the clock you can't negotiate with. Then train the other one until the limb can objectively meet the demands of your life, work or sport.

Recovery isn't reaching the right date. It's reaching the required capacity, safely.

**References**

1. van Melick N, van Cingel REH, Brooijmans F, et al. Evidence-based clinical practice update: practice guidelines for anterior cruciate ligament rehabilitation based on a systematic review and multidisciplinary consensus. Br J Sports Med. 2016;50(24):1506-1515. doi:10.1136/bjsports-2015-095898

2. Kotsifaki R, Korakakis V, King E, et al. Aspetar clinical practice guideline on rehabilitation after anterior cruciate ligament reconstruction. Br J Sports Med. 2023;57:500-514. doi:10.1136/bjsports-2022-106158

3. Thigpen CA, Shaffer MA, Gaunt BW, Leggin BG, Williams GR, Wilcox RB. The American Society of Shoulder and Elbow Therapists' consensus statement on rehabilitation following arthroscopic rotator cuff repair. J Shoulder Elbow Surg. 2016;25(4):521-535. doi:10.1016/j.jse.2015.12.018

4. Hoeffner R, Svensson RB, Bjerregaard N, Kjaer M, Magnusson SP. Persistent deficits after an Achilles tendon rupture: a narrative review. Transl Sports Med. 2022;2022:7445398. doi:10.1155/2022/7445398

5. Heikkinen J, Lantto I, Piilonen J, et al. Tendon length, calf muscle atrophy, and strength deficit after acute Achilles tendon rupture: long-term follow-up of patients in a previous study. J Bone Joint Surg Am. 2017;99(18):1509-1515. doi:10.2106/JBJS.16.01491

6. Paravlic AH, Meulenberg CJW, Drole K. The time course of quadriceps strength recovery after total knee arthroplasty is influenced by body mass index, sex, and age of patients: systematic review and meta-analysis. Front Med. 2022;9:865412. doi:10.3389/fmed.2022.865412

**Author:** Alejandro Zubrisky, BPT, licensed physiotherapist working in orthopaedic and postoperative rehabilitation in Tel Aviv. ORCID: 0009-0003-1069-937X

**Disclosure:** The Two-Clock Model is an educational framework I use to explain postoperative rehabilitation. It is not a validated clinical classification system.

I'm a physiotherapist in Tel Aviv and I get asked this constantly, so here is the honest version. It confuses a lot of people, especially olim, and getting it wrong costs money.

The key thing to understand first: there are two separate routes, and people mix them up.

Route 1, in-network (through your kupah). Physio at your fund's own clinics or contracted providers is basically free or a small copay. The catch is the wait, which can run a few weeks depending on your area and the season, and you usually get a set course of sessions per referral rather than open-ended treatment.

Route 2, private (out of network). You pay out of pocket, see whoever you want, and there is no wait. Here is the part almost nobody gets right: only one of the four funds gives you anything back for private physio, and only through its paid supplemental plan.

Private (out-of-network) reimbursement, fund by fund:

| Kupah | Reimburses private (out of network)? | How much | Conditions |

|---|---|---|---|

| Clalit | Yes, via Mushlam or Platinum | 75% of the cost, up to about ₪113 per session, up to 24 per year | Needs a referral from a Clalit doctor (valid 2 years). Submit in the Mushlam app. |

| Maccabi | No | n/a | In-network providers only |

| Meuhedet | No | n/a | In-network providers only |

| Leumit | No | n/a | In-network providers only |

(The funds adjust these caps year to year, so check your current number. This is the 2026 picture.)

If you are with Maccabi, Meuhedet or Leumit, the kupah gives you nothing back for a private physio. Your only route to a partial refund is a separate private supplemental policy (Harel, Phoenix, Menorah Mivtachim, Migdal, Clal, Hachsharah), which usually pays back somewhere around ₪100 to 150 per session under "ambulatory treatment." Check your own policy, they vary a lot.

Things that save people money and hassle:

- Ask for the official tax invoice (חשבונית מס) after every session. No invoice, no refund, and a plain receipt does not count.

- The Clalit referral is valid for 2 years, so get it once and reuse it.

- "The kupah covers physio" and "the kupah covers YOUR private physio" are two different sentences. Know which one applies to you before you book.

- Private physio in Tel Aviv runs roughly ₪350 to 450 for a 50 to 60 minute one-on-one session, so if you are Clalit and eligible, the refund covers a meaningful chunk.

Bottom line: if cost is your priority and you can wait, go in-network. If you want to pick your physio and start now, go private, and only Clalit refunds part of it. Everyone else needs private supplemental insurance to get anything back.

I am a local private physio so I have a bias, but these rules are the same whoever you end up seeing. Happy to answer specific questions below.