Should We Be Rehabbing Like Dogs and Horses? Rethinking Early Mobilization

By /

Have you ever watched a dog or horse heal from orthopedic surgery? They don’t do it like we do it. There are no crutches, big braces, or little scooters. In fact, early weight-bearing on the area is the only rule of thumb. So while we’re still totally disabled, our canine and equine buddies are already running around. While much research has been done on all of this, a new study continues to support that human orthopedic surgery has it backward. Let’s dig in.

My Dogs and Surgery

I love large Alaskan malamutes. Maybe it’s my love of the Colorado mountains, but if there ever was a prototypical mountain dog designed to live in the wild, it’s the domesticated wolf breed also known as a Malamute.

Many years ago one of our males tore his ACL. What I witnessed was super fascinating. This was a huge surgery where they reshaped bone and while he went down hard for a few days to maybe a week, the moment he could bear weight on that limb he was up. From there to light running was amazingly fast. In fact, he was back to normal activities by the time a human ACL patient was just getting off crutches. That’s when I began to wonder, did human orthopedic surgeons have it all backward? What if the accouterments of surgery like crutches, braces, casts, and scooters were all not needed? What if it’s more a placebo than required?

Request a Regenexx Appointment


I remember when I first spoke to a veterinarian who was one of the first to perform microfracture surgery in horses. This is a procedure also common to humans where holes are poked through the bone. The goal is to get bone marrow stem cells to flow into a spot that has lost cartilage and prompt the body to heal that spot.

The human version of the surgery was a really big deal. It requires patients to be on crutches after the surgery and even before that, they’re in bed with a continuous passive range of motion (CPM) device. For example, this keeps their knee moving while the area with the holes heals.

When I learned that the vet also did microfracture surgery, I asked how he handled the post-op rehab because I wasn’t sure how you would put a horse on crutches or CPM. He chuckled. They simply put the horse in the stall and it got up when the anesthesia wore off. While they would try to restrict the horse from workouts, they did nothing else, because immobilizing a horse could cause other problems. So here the horse was placing weight on the area right away. Despite this drastic difference between the equine and human procedure, the horses did very well.

The Achilles Tendon

In the new study, 135 patients who had an Achilles tendon surgical repair were randomized to one of two groups (1). The traditional surgery group was placed in a cast for two weeks and then a brace with heel lifts, that were gradually removed. This group wasn’t encouraged to place weight on the area for the first two weeks. The early mobilization group was placed in a special brace and encouraged to walk right away as tolerated.

At 6 months, the early mobilization group did better than the usual “keep weight off the area” approach. Hence, this study tends to support the veterinarian model. Get them up early as they can tolerate it!

This isn’t even a new idea. A 2017 review showed the same thing with Achilles surgery (2). The same thing happens with knee and hip replacement, early mobilization means sooner discharge from the hospital (3,4).

Join us for a free Regenexx webinar

Why We Use this Up Early Approach

Many of my colleagues have adopted the orthopedic model of keeping patients off of the areas where orthobiologic injections are placed. However, because of the research, I have reviewed here, we have always promoted what I call “Activity as Tolerated”. This means that the patient can often get back onto the injected area when their body tells them it’s time. That’s usually when the pain caused by the procedure has fallen to a 2/10 or below.

The upshot?  We should be focusing on getting patients back to placing weight on the areas we treat as soon as they can. Veterinarians have known for decades that this method works! It just took human doctors a little longer to get there.



(1) Aufwerber S, Heijne A, Edman G, Silbernagel KG, Ackermann PW. Does Early Functional Mobilization Affect Long-Term Outcomes After an Achilles Tendon Rupture? A Randomized Clinical Trial. Orthop J Sports Med. 2020;8(3):2325967120906522. Published 2020 Mar 16. doi:10.1177/2325967120906522

(2) Kauwe M. Acute Achilles Tendon Rupture: Clinical Evaluation, Conservative Management, and Early Active Rehabilitation. Clin Podiatr Med Surg. 2017;34(2):229-243. doi:10.1016/j.cpm.2016.10.009

(3) Okamoto T, Ridley RJ, Edmondston SJ, Visser M, Headford J, Yates PJ. Day-of-Surgery Mobilization Reduces the Length of Stay After Elective Hip Arthroplasty. J Arthroplasty. 2016;31(10):2227-2230. doi:10.1016/j.arth.2016.03.066

This blog post provides general information to help the reader better understand regenerative medicine, musculoskeletal health, and related subjects. All content provided in this blog, website, or any linked materials, including text, graphics, images, patient profiles, outcomes, and information, are not intended and should not be considered or used as a substitute for medical advice, diagnosis, or treatment. Please always consult with a professional and certified healthcare provider to discuss if a treatment is right for you.

Get health and wellness information from a trusted source.

By submitting the form, you are agreeing that you read and consent to our Privacy Policy. We may also contact you via email, phone, and other electronic means to communicate information about our products and services. We do not sell, or share your information to third party vendors.

Category: Uncategorized

Leave a Reply

Your email address will not be published. Required fields are marked *

6 thoughts on “Should We Be Rehabbing Like Dogs and Horses? Rethinking Early Mobilization

  1. Shannon

    I agree with you for this approach in most procedures that you do.
    Can you clarifty what you want when it comes to post PICL?

    1. Chris Centeno, MD Post author

      Activity as tolerated

  2. Chris

    Hi- I agree- as I have done very/very well with being active as tolerated after PRP or Stem cells in ligaments-joints and tendons. I had a bone augmentation that did not heal so well – I just had it redone and added DBM to the BMC. I am very worried if it does not work that I will be headed to an ankle fusion/replacement- so I am being very conservative. I am starting my 7th week without walking- just still scooter, crutch’s with toe touching/slight weight. I would love to start weight bearing (I have been in the water a lot with a lot of movement) I am so afraid to give it enough time to heal- yet afraid that maybe I should be walking on it. Any particular data for this combo?

    1. Chris Centeno, MD Post author

      Being more conservative with a bone aug is reasonable…

  3. Michael Devaney

    Very interesting. I am a runner who fractured his ankle 3 weeks ago this coming Thursday. I had surgery one week after the injury whereby the surgeon used a screw to close the fracture gap. I have been non weight bearing since in a cast since but hopefully will change over to boot tomorrow.

  4. Gail Bryning

    Well I had a bad break of my wrist in September 2019 broke radial & ulner bones serverely and had two pins . my swelling was awful and cast was too tight so I went to ER to have it removed as pain was unbearable.
    Then teo months later wrist bones developed an infection anf had s second surgery to clean out infection and Dr said he put in abx seeds as well.
    My wrist is deformed now and very painful as if a tiger is bitting me so terrible my Dr said I can rebrake it but it could get worse#
    Why would I choose worse?
    He is so surgery happy not me
    2 surgeries haven’t been a good result!

Is Regenexx Right For You?

Request a free Regenexx Info Packet


Learn about the #1 Stem Cell & Platelet Procedures for treating arthritis, common joint injuries & spine pain.

Join a Webinar


Get fresh updates and insights from Regenexx delivered straight to your inbox.

Subscribe to the Blog


9035 Wadsworth Pkwy #1000
Westminster, CO 80021


Copyright © Regenexx 2021. All rights reserved. | Privacy Policy

*DISCLAIMER: Like all medical procedures, Regenexx® Procedures have a success and failure rate. Patient reviews and testimonials on this site should not be interpreted as a statement on the effectiveness of our treatments for anyone else.

Providers listed on the Regenexx website are for informational purposes only and are not a recommendation from Regenexx for a specific provider or a guarantee of the outcome of any treatment you receive.