Tendinopathy: Why That "Swollen" Tendon Might Not Be What You Think (And Why It's Often Manageable Without the Drama)

If you're in your 50s and suddenly dealing with nagging pain near your sit bones, in your Achilles or around your hips when you walk squat or even sit for too long, you're not alone. Many women tell me it feels like their body has "turned on them" out of nowhere—especially around perimenopause or after menopause. The tendon feels thick tender maybe a bit puffy and the old label "tendinitis" makes it sound like endless inflammation that needs ice and anti-inflammatories forever. But here's the good news: modern understanding has moved on and so can your recovery.

The term tendinopathy is the preferred word used by experts worldwide (building on consensus like ICON 2019 and updates like ICON 2023 for specific tendons such as Achilles). It describes persistent tendon pain and reduced function linked to mechanical loading—basically how the tendon responds (or struggles to respond) when we ask it to handle repeated stress. It's not primarily about classic inflammation like we once thought.

What’s Really Happening Inside the Tendon?

In chronic tendinopathy biopsies and imaging studies generally show very little of the classic inflammation we associate with acute injuries—no big rush of angry immune cells no constant redness or heat. Instead, the tendon undergoes a failed healing response: collagen fibres become disorganised, blood vessels increase (neovessels) and the extracellular matrix changes.

That "swelling" or thickening you notice or feel? It's mostly the tendon attracting and holding extra water. Large molecules called proteoglycans and glycosaminoglycans (think of them as natural sponges) build up in the matrix. These are hydrophilic—they love water—and pull fluid in through osmotic pressure making the tendon look and feel bulkier. It's more like a hydrated adaptive (but sometimes over-the-top) response to load than true inflammatory oedema.

This explains why anti-inflammatories often don't fix the long-term issue and why progressive loading through targeted exercise works so well. The tendon isn't "inflamed" in the way we used to fear—it's out of balance and needs smart rehab to regain resilience.

Recent research (2024–2026) adds nuance: while inflammation isn't the main driver in most chronic cases some subtypes show low-grade persistent inflammation (e.g. involving cytokines like IL-1β or IL-17A) that can contribute to degeneration or slow healing. Studies classify tendinopathy into subtypes one of which is more "inflammatory proliferative" with upregulated immune pathways. This doesn't change the big picture—load management remains key—but it means we can tailor approaches if signs of ongoing low-grade inflammation appear (e.g. via markers or resistant symptoms).

Why This Hits Harder Around Perimenopause and Menopause

Before menopause women generally have lower rates of tendinopathy than men. Estrogen plays a protective role: it supports collagen production helps maintain tendon elasticity and influences how tendon cells (tenocytes) respond to load. Tendon tissue even has estrogen receptors so the hormone directly helps keep things strong and flexible.

As estrogen levels fluctuate wildly in perimenopause and then drop post-menopause (average age around 51 in Australia) tendons can lose some of that resilience. Collagen turnover slows, the matrix becomes stiffer or less balanced and the tendon may struggle more with everyday loads. This is why many women in their 50s report new or worsening issues—gluteal tendinopathy (side hip pain), proximal hamstring tendinopathy (sit-bone pain), achilles problems or even rotator cuff changes—often for the first time.

Fresh insights from 2025 studies continue to highlight how estrogen decline leads to stiffer less resilient tissues and increased pain in areas like the glutes, hamstrings or Achilles. While evidence on hormone replacement therapy (HRT) for musculoskeletal pain shows mixed results (some reviews find no overall significant effect on generalised pain but conflicting findings for specific conditions), certain approaches show promise in easing symptoms. Exercise and education remain the core for gluteal tendinopathy (moderate evidence for pain and function improvements) and addressing hormonal shifts alongside rehab can make a real difference for many women in their 50s. These findings underscore that estrogen isn't just about hot flushes—it's key for keeping tendons adaptable and strong as we age.

Cancer and HRT

If you've got a history of breast cancer, the idea of using HRT (menopausal hormone therapy) might feel worrying or off-limits. However, recent 2025–2026 (listed below) research and expert consensuses are moving toward more individualised, shared decision-making approaches—especially when severe symptoms (such as worsening tendinopathy pain or joint discomfort) are seriously affecting your quality of life.

Evidence shows:

• No increased breast cancer risk with MHT in women who carry BRCA gene variants and in some cases estrogen-only forms may even be associated with slightly lower risks.

• Vaginal estrogen is widely considered safe, with very low systemic absorption and no evidence of increased recurrence (for example, meta-analyses report an odds ratio of 0.48, indicating no added risk and potentially a neutral or protective signal).

Expert panels now encourage open discussions with your oncologist or GP to carefully weigh your personal symptoms against the potential risks—which are often modest in the latest data but not yet fully settled in the research. Body-identical HRT may be considered off-label in select situations when non-hormonal options (such as acupuncture, certain antidepressants, or lifestyle adjustments) aren't enough. The goal is helping you thrive, not just cope—so feel empowered to explore what might be right for your unique situation.

What Actually Helps (Practical Steps That Work)

The evidence points to load management and progressive strengthening as the cornerstone—no quick fixes but reliable progress for most people.

• Start with relative rest from aggravating activities but don't stop moving completely—gentle movement keeps things from stiffening further.

• Introduce isometric holds early to build tolerance with minimal compression.

• Progress to heavy slow resistance exercises—these promote tendon adaptation and are backed by strong research.

• Monitor pain wisely: mild to moderate discomfort (say 3–5/10) during exercise is often okay if it settles quickly and doesn't worsen day-to-day.

• Address the bigger picture: maintain protein intake for collagen support keep active to preserve muscle and consider chatting to your physio or GP about any menopause-related factors or low-grade inflammation signs.

  
  

Most people with tendinopathy improve significantly (often 70–90% better) with consistent tailored rehab—without surgery or injections.

Your tendons are remarkably adaptable. They just need the right kind of encouragement to get back on track.

If this sounds familiar and you'd like a personalised plan to get moving confidently again—without fear holding you back—reach out. We're here in Sydney to help you reclaim the activities you love.

The only thing we have to fear is fear itself—especially the fear that stops you moving and doing the things you love.

Let's turn that around one sensible step at a time.

Disclaimer

While most people with gluteal tendinopathy see significant improvement with conservative care (load management, gradual strengthening, and avoiding compression), not everyone follows the same path. A smaller number of cases are more persistent or complex and may need additional support — such as specialist referral, injections, or surgical review. If your pain is severe, worsening, or not responding after consistent management, please reach out or see your GP for further assessment. This article is general information only — it is not a substitute for personalized medical advice.

If you're interested in reading from the source:

• Scott A, Squier K, Alfredson H, et al. ICON 2019: International Scientific Tendinopathy Symposium Consensus: Clinical Terminology. Br J Sports Med. 2020;54(5):260-262. PubMed: https://pubmed.ncbi.nlm.nih.gov/31399426/

• Bremer T, Nicklen P, Fearon A, Morrissey D. The efficacy of gluteal tendinopathy treatments: A systematic review. Clin Rehabil. 2025;39(5):600-617. PubMed: https://pubmed.ncbi.nlm.nih.gov/40223303/

• Overton R, Amini P, Chew A, et al. The effect of hormone replacement therapy on musculoskeletal pain in menopausal women: A systematic review and meta-analysis. Post Reprod Health. 2025 Dec 4 [Epub ahead of print]. PubMed: https://pubmed.ncbi.nlm.nih.gov/41344380/

• Glynne S, Simon J, Branson A, Payne S, Newson L, et al. Menopausal hormone therapy for breast cancer patients: what is the current evidence? Menopause. 2026 (or late 2025 online). PubMed: https://pubmed.ncbi.nlm.nih.gov/41025376/

• Beste ME, Kaunitz AM, McKinney JA, Sanchez-Ramos L. Vaginal estrogen use in breast cancer survivors: a systematic review and meta-analysis of recurrence and mortality risks. Am J Obstet Gynecol. 2025;232(3):262-270.e1. PubMed: https://pubmed.ncbi.nlm.nih.gov/39521301/

• Menopausal Hormone Therapy and the Risk of Breast Cancer in Women with a Pathogenic Variant in BRCA1 or BRCA2 (Abstract GS3-01, San Antonio Breast Cancer Symposium 2025). PubMed (related abstract): https://pubmed.ncbi.nlm.nih.gov/41403285/