Degenerative tendinopathy
Your tendon pain persists despite rest and initial treatments? You may be dealing with degenerative tendinosis, a chronic condition that affects the very structure of the tendon. At the Foot Clinic, we have the expertise and minimally invasive techniques to provide lasting relief from your pain and restore your mobility, especially at the level of the Achilles tendon, the fibular tendons, and the tibialis.
What is degenerative tendinosis?
A degenerative tendinopathy does not correspond to a classic inflammation as one might think. Unlike tendinitis, which occurs acutely with redness and swelling, tendinosis results from progressive wear of the tendon fibers. At the microscopic level, the collagen fibers that make up the tendon become disorganized. Type I collagen, which is strong and elastic, is replaced by type III collagen, which is less robust.
This transformation gradually weakens the tendon and impairs its ability to transmit muscular forces to the bone. The term "degenerative" often worries our patients. We want to reassure: this condition is not irreversible. With appropriate management, tendon regeneration is still possible, especially when the diagnosis is made early.
What are the causes of degenerative tendinosis of the foot and ankle?
Several factors gradually weaken our patients' tendons.
- Repeated microtraumas: A runner who increases their weekly mileage too quickly or a worker who puts intensive strain on their ankles creates microlesions. These lesions accumulate without giving the tendon enough time to fully heal.
- Age: After 40, tendons naturally lose elasticity and regenerative capacity. This physiological wear explains why we see more patients in this age group for foot and ankle tendinoses.
- Certain medications: They weaken tendon structures. Fluoroquinolones (antibiotics) and corticosteroids increase the risk of degeneration. We systematically ask our patients about their current treatments.
- Foot morphological defects: These promote tendon overload. A high-arched foot or flat foot, or a valgus deformity of the hindfoot alter the distribution of stresses.
- Intensive sports practice: Without adequate recovery periods, this predisposes to tendinoses. Sports involving repeated jumps (basketball, volleyball) or abrupt changes of direction (tennis, football) particularly strain the Achilles tendon and fibular tendons.
How to recognize the symptoms of degenerative tendinosis?
Degenerative tendinosis manifests with several characteristic symptoms that help to identify it.
- Progressive mechanical pain: it appears during exertion and decreases with rest, at least in the early stages, and develops over several weeks or months, unlike acute tendinitis.
- Morning stiffness: the first steps upon waking cause discomfort that fades after a few minutes of activity, reflecting the alteration of the tendon structure.
- Thickening of the tendon: detectable by palpation, it reflects the disorganization of collagen fibers and the presence of scar tissue. On the Achilles tendon, it is generally located 2 to 6 cm above its insertion on the calcaneus.
- Pain at rest in advanced stages: it may occur, especially at night, indicating significant degeneration that requires prompt management to avoid tendon rupture.
- Symptoms vary depending on the affected tendon: involvement of the Achilles tendon causes pain at the back of the ankle that worsens when going uphill, fibular tendinosis causes pain on the outer side, and posterior tibial tendinosis leads to discomfort under the inner ankle, sometimes accompanied by a collapse of the arch of the foot.
Conservative treatments: how to relieve degenerative tendinosis?
Conservative treatment of tendinosis is based on several complementary approaches. Relative rest involves adapting the activity rather than stopping it completely, for example by replacing running with cycling or swimming. Physical therapy rehabilitation is the cornerstone, notably through eccentric strengthening and the Alfredson protocol for the Achilles tendon. Custom-made orthopedic insoles help correct support deficiencies responsible for tendon overload, depending on the patient's foot type.
Additionally, extracorporeal shock waves promote vascularization and tendon regeneration in 60 to 70% of cases, over 3 to 5 sessions. PRP, preferred over corticosteroid injections which are formally discouraged, uses the patient's growth factors to stimulate repair in 1 to 3 injections. This entire protocol requires a minimum of 3 to 6 months for lasting results, with regular follow-up to adapt it to clinical progress.
When to consider surgery for degenerative tendinosis?
Surgery is considered when structural lesions are significant, particularly when more than 50% of the tendon shows degeneration or a partial rupture making spontaneous healing unlikely, or when functional impairment becomes severe: inability to walk normally, climb stairs, or stand on tiptoes.
At the Foot Clinic, Dr. Schramm evaluates the benefit-risk balance with each patient before any decision. We favor minimally invasive techniques, performed on an outpatient basis, which limit scarring, reduce post-operative pain, and speed up recovery, with the goal of returning to a normal, pain-free active life.
Surgical techniques for treating degenerative tendinosis in the foot
We offer several surgical techniques adapted to each situation:
- Tenolysis: releases the tendon from adhesions that limit its gliding, performed under arthroscopy or through a mini-incision. The removal of peritendinous inflammatory tissues quickly relieves pain.
- Debridement of degenerative lesions: consists of excising areas of damaged tissue to keep only the healthy fibers. For the Achilles tendon, we remove necrotic nodules that weaken the structure. This technique is often accompanied by reinsertion of the remaining healthy fibers.
- Tendon reinsertion: becomes necessary when lesions reach the bony insertion. We use resorbable anchors that securely attach the tendon to the bone, ensuring optimal healing of the tendon-bone interface.
- Palliative tendon transfer: provides mechanical reinforcement in severe cases. For a highly degenerated Achilles tendon, we can transfer the long flexor of the big toe, which partially compensates for the strength deficit.
- Percutaneous techniques: guided by ultrasound, minimize scarring, preserve as much healthy tissue as possible, and reduce the risk of complications to speed up recovery.
Postoperative courses and recovery time after surgery
Post-operative care begins with immobilization in a boot for 3 to 6 weeks, the specifics of which vary according to the procedure performed: early weight-bearing is allowed after a simple tenolysis, while weight-bearing is limited for 4 weeks after tendon reinsertion. Physical therapy starts the day after surgery, with gentle mobilization that is gradually intensified after the boot is removed. Regular clinical and ultrasound follow-up makes it possible to adapt the protocol to each patient's progress.
Return to normal life extends over several months: walking without limitation and daily activities are generally possible between 2 and 3 months, while driving is allowed after 6 weeks. Resuming sports requires more patience, from 4 to 6 months depending on the sport; non-impact sports are permitted earlier than activities involving impacts. Our experience shows that 85% of patients regain normal foot function after surgery for tendinosis.
Frequently Asked Questions About Degenerative Tendinosis
Tendinitis refers to an acute inflammation of the tendon that occurs suddenly, with redness and swelling. It responds well to rest and anti-inflammatories over a few weeks.
Degenerative tendinosis results from chronic wear and tear without real inflammation. The collagen fibers gradually become disorganized. This condition requires prolonged treatment focused on tendon regeneration rather than anti-inflammatories.
Conservative treatment requires at least 3 to 6 months to achieve lasting improvement. The regeneration of collagen fibers follows a slow process that cannot be artificially accelerated.
After surgical intervention, allow 4 to 6 months for complete recovery. Strict adherence to the rehabilitation protocol directly affects these timeframes. Our experience shows that resuming activities too early triples the risk of recurrence.
Yes, complete healing is still possible with appropriate and early treatment. The earlier the diagnosis is made, the better the chances of tendon regeneration. Early stages respond very favorably to specific rehabilitation.
When conservative treatment fails, minimally invasive surgery offers excellent results with 85% of patients satisfied. Preventing recurrence by adapting movements and wearing orthopedic insoles maintains these good results in the long term.
We formally advise against cortisone injections in the tendons. Although they provide temporary pain relief, they weaken the tendon structure and accelerate degeneration. The risk of tendon rupture increases significantly after repeated cortisone injections.
We favor PRP (platelet-rich plasma) or hyaluronic acid, which stimulate regeneration without harmful effects. These biological alternatives are part of a comprehensive therapeutic strategy combining rehabilitation and adaptation of activities.
Adapting your sports activity becomes essential. You must avoid movements that cause pain during the treatment phase. Low-impact sports like cycling or swimming put less strain on the tendons of the foot and ankle. We generally allow these activities at a moderate intensity.
Running and sports involving jumping require a temporary cessation of 3 to 6 months. Resumption is gradual and conducted under medical supervision according to a specific protocol to avoid worsening the condition.
Lack of treatment leads to progressive worsening of tendon lesions. The tendon continues to deteriorate, moving from superficial damage to deep degeneration. The main risk is complete tendon rupture, which can occur during a trivial activity.
This complication requires emergency surgery with more serious consequences. Chronic pain progressively limits your daily and professional activities. Early management avoids this unfavorable progression in most cases.
We do indeed observe multiple involvements in some patients. The Achilles tendon and the peroneals can degenerate simultaneously, especially in athletes or in the presence of morphological abnormalities of the foot. This situation requires a comprehensive assessment with MRI and biomechanical analysis.
Overall management includes correcting common contributing factors. Orthopedic insoles and adapted rehabilitation treat all affected tendons. Close monitoring allows for early detection of new lesions.
Custom insoles play a key role when your foot morphology favors tendon overload. Flat feet, high arches, or a hindfoot valgus alter the distribution of stress on the tendons. Plantar orthoses correct these alignment defects and provide lasting relief to tendon structures.
We systematically prescribe insoles after podoscopic and biomechanical analysis. Their effectiveness increases when combined with rehabilitation, with 70% of our patients noticing significant improvement.
Key takeaways
Degenerative tendinosis of the foot and ankle can be treated effectively when diagnosed early. Conservative treatments combining specific rehabilitation, orthopedic insoles, and innovative techniques such as PRP yield excellent results in the majority of cases.