Achilles tendinopathy is not one uniform condition. Pain at the calcaneal insertion behaves differently from pain in the midportion of the tendon, and the distinction affects loading, compression and treatment selection. Progressive tendon loading remains the foundation of care. Shockwave therapy also has clinical evidence, particularly for persistent cases and as an adjunct to loading, but it should not be applied automatically to every painful Achilles tendon. At Novo Soft Tissue in the Denver Tech Center, we first determine whether the presentation is insertional, midportion, a partial tear, referred pain or another problem before choosing rehabilitation, radial or focused shockwave, imaging or referral.
Insertional vs. Midportion Achilles Tendinopathy
| Insertional | Midportion | |
|---|---|---|
| Location | At or very near the attachment on the heel bone | Typically about 2–6 cm above the insertion |
| Main mechanical factor | Tensile load plus compression against the calcaneus | Tensile load and tendon load capacity |
| Often aggravated by | Uphill walking, stairs, deep dorsiflexion, calf raises off a step, heel-counter pressure | Running, hopping and increases in training load |
| Loading approach | Often modified to limit deep dorsiflexion early | Progressive loading, generally without the same compression limits |
These are tendencies, not rules, and not every aggravating activity provokes symptoms in every person. The two presentations are not interchangeable, and more detail is in insertional vs. midportion Achilles tendinopathy.
Why Insertional Achilles Pain Behaves Differently
The insertional tendon is exposed to both tensile load and compression against the calcaneus as the ankle moves into dorsiflexion. That is one reason rehabilitation for insertional disease is often modified to avoid excessive dorsiflexion early in treatment. Traditional heel-drop programs performed below the level of a step may be poorly tolerated in insertional disease because they increase compression at the tendon insertion. That does not mean insertional tendons should never be loaded into dorsiflexion; range is usually reintroduced as tolerance improves.
Not All Achilles Pain Is Tendinopathy
- Insertional Achilles tendinopathy: pain at the tendon attachment, often sensitive to compression and dorsiflexion.
- Midportion Achilles tendinopathy: pain and often thickening a few centimeters above the heel, related mainly to tensile load.
- Partial Achilles tear: a more sudden onset with trauma or forceful loading, marked weakness or a palpable defect. Imaging may be needed.
- Achilles rupture: a sudden pop, loss of push-off strength and positive clinical rupture signs. This needs an urgent orthopedic pathway.
- Retrocalcaneal bursitis: irritation of the bursa between the tendon and heel bone, which can coexist with insertional tendinopathy.
- Haglund morphology: a prominent back of the heel bone that may add to compression. It is a structural finding, and it does not by itself prove the cause of pain.
- Plantar heel pain: pain under the heel rather than behind it. See plantar fasciitis and heel pain.
- Referred or neurologic pain: burning, numbness, tingling or atypical patterns call for a broader assessment.
What We Examine in Persistent Achilles Pain
- Exact pain location and how long it has lasted
- Morning stiffness, and walking and running tolerance
- Calf raise capacity, single-leg function and calf strength
- How the tendon responds to load
- Ankle dorsiflexion and sensitivity to insertional compression
- Where along the tendon it is tender
- Previous exercise programs, shockwave or injections, and how you responded
- Footwear factors when relevant
- Signs of a tear, and any previous imaging
Tenderness and thickening help locate the problem. They do not reveal tendon microstructure.
When Does Achilles Pain Need Imaging?
Diagnosis is frequently clinical. Ultrasound or MRI may help when a partial tear is suspected, with significant weakness, atypical symptoms, a traumatic onset or a suspected major structural lesion, after prolonged failure of appropriate care, or for surgical planning. Tendon thickness or Doppler signal on its own does not establish what is generating pain or how severe the problem is.
How Treatment Is Selected
Load management and rehabilitation are foundational. Progressive calf and Achilles loading may include isometrics, slow heavy loading, eccentric-concentric work, energy-storage loading and sport-specific progression, depending on the stage and presentation. Insertional programs are usually modified for compression.
Radial shockwave spreads energy across a broader, more superficial field. The strongest classic Achilles trials used low-energy radial treatment.
Focused shockwave concentrates energy at a selectable depth and may be used when the exam identifies a specific localized target.
Combined radial and focused treatment may be considered in selected refractory cases. A retrospective cohort suggests combined treatment may produce more consistent clinically meaningful functional improvement in refractory cases, but randomized confirmation is lacking.
Manual treatment may address restriction in the adjacent calf and fascia. It is not used as a direct tendon-remodeling treatment.
Imaging or referral comes first when a tear, rupture, severe weakness or atypical pathology is suspected.
You do not need to decide which treatment you need before your visit. The examination determines whether a Novo treatment fits. All four tools are compared on the services page, and tendon problems elsewhere are covered on chronic tendinopathy.
What Research Says
- Insertional: in a randomized trial of 50 patients with chronic insertional Achilles tendinopathy, low-energy shockwave produced greater improvement than traditional eccentric loading at four months. VISA-A rose from 53 to 80 versus 53 to 63, and 64% versus 28% reported being completely recovered or much improved (Rompe, 2008).
- Midportion, added to loading: in 68 patients with refractory midportion tendinopathy, VISA-A rose from 51 to 87 with loading plus shockwave versus 50 to 73 with loading alone, and 82% versus 56% reported being completely recovered or much improved at four months (Rompe, 2009).
- Midportion, compared with observation: shockwave and eccentric loading were both better than wait and see, with broadly similar results (Rompe, 2007).
- Pooled evidence: a 2020 meta-analysis of 5 randomized and 3 case-control studies generally favored shockwave for pain and function (Fan, 2020).
Results are not uniform across every trial or review, which is why Novo does not treat every painful Achilles tendon with shockwave.
Read the full Achilles shockwave evidence review → · Insertional vs. midportion Achilles tendinopathy →
Sources: Rompe et al., J Bone Joint Surg Am 2008 · Rompe et al., Am J Sports Med 2009 · Rompe et al., Am J Sports Med 2007 · Fan et al., Orthop J Sports Med 2020
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