Discover how regenerative orthopedics treatments for chronic tendinopathy can enhance recovery and improve mobility.
Welcome to our educational series. I am Dr. Alex Jimenez, and I am honored to guide you through the intricate world of chronic tendon injuries, or tendinopathies. These conditions, often stubbornly resistant to conventional treatments, can significantly impair quality of life, turning simple daily activities into painful challenges. In this comprehensive post, we will explore the paradigm shift in understanding tendinopathy—moving away from the outdated notion of simple inflammation (tendinitis) toward a more accurate model of chronic degeneration (tendinosis). We will explore the cellular and molecular reasons tendons fail to heal, setting the stage for a groundbreaking, minimally invasive procedure known as ultrasound-guided needle fenestration.
This educational journey will meticulously break down the science behind needle fenestration. We will explore how this technique, which involves methodically passing a fine needle through the damaged tendon tissue, acts as a powerful catalyst for healing. By mechanically disrupting the stagnant, degenerative tissue and inducing a controlled, acute inflammatory response, fenestration effectively “reboots” the body’s natural repair cascade. We will discuss the pivotal role of modern imaging, specifically musculoskeletal ultrasound, which provides real-time visualization and transforms this procedure from a blind approach into a precise, targeted intervention.
We will also examine how needle fenestration is often amplified through integration with regenerative injection therapies, such as Prolotherapy (using dextrose) and Platelet-Rich Plasma (PRP). We will detail the biological mechanisms of these injectates and how they synergize with fenestration to deliver essential growth factors and signaling molecules to the treated area.
Crucially, this post will illuminate the philosophy that drives our practice at the Injury Medical Clinic. Here, we champion a multidisciplinary, integrative care model. I will explain how my role as a Doctor of Chiropractic (DC) and advanced practice nurse (APRN) intersects with the invaluable medical oversight of our Medical Director, Dr. Maria Guadalupe Cardenas, MD. Dr. Cardenas, a board-certified internist with over four decades of experience, provides the essential medical framework that ensures our advanced procedures are administered with the highest standards of safety and efficacy. We will show how our collaborative team—integrating chiropractic care, functional medicine, rehabilitation, and medical management—creates a holistic, personalized treatment ecosystem designed not just to alleviate symptoms, but to restore function and build long-term resilience. Join me as we uncover the latest evidence-based strategies that are redefining the future of musculoskeletal and chronic pain management.
For decades, the suffix “-itis” has dominated the conversation around tendon pain. Patients are commonly diagnosed with tendinitis—be it “tennis elbow” (lateral epicondylitis), “golfer’s elbow” (medial epicondylitis), Achilles tendinitis, or patellar tendinitis. This terminology implies that the primary culprit is inflammation, a fiery, acute process involving immune cells like neutrophils and macrophages rushing to an injury site. Consequently, the standard treatment protocol has historically revolved around anti-inflammatory strategies: rest, ice, and non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or naproxen.
While this approach can be effective for a truly acute tendon strain, it falls woefully short for the vast majority of individuals who suffer from persistent, chronic tendon pain. Why? Because pioneering research over the past two decades has revealed a critical truth: chronic tendon pain is rarely inflammatory. Instead, it is degenerative.
When we examine biopsies of chronically painful tendons under a microscope, we do not find the classic cellular markers of acute inflammation. What we find instead is a state of disarray and decay, a condition more accurately termed tendinosis. This distinction is not merely academic; it is fundamental to understanding why conventional treatments often fail and why newer, regenerative approaches are proving so successful.
A series of distinct pathological changes at the cellular and structural levels characterize tendinosis:
This degenerative process creates a vicious cycle. The weakened tendon can withstand less mechanical load. Everyday activities that were once harmless now cause micro-trauma, perpetuating the degenerative state. The body’s attempt at healing is stalled and dysfunctional, leading to a chronic, non-healing wound. This is the clinical reality for so many of our patients who come to us after months or even years of frustration with conventional care. They have rested, they have iced, they have taken anti-inflammatories, yet the pain persists. This is because these strategies fail to address the root cause: the degenerative nature of tendinosis.
At the Injury Medical Clinic, our first and most critical step is an accurate diagnosis. This is where our collaborative model truly shines. When a patient presents with chronic tendon pain, they benefit from a dual-perspective evaluation.
As a Doctor of Chiropractic with advanced certifications in functional medicine, I conduct a thorough biomechanical and functional assessment. I am looking for the “why” behind the tendon overload.
At the same time, Dr. Maria Guadalupe Cardenas, MD, our esteemed Medical Director, provides a comprehensive medical evaluation. With her extensive experience as an internist, she rules out other potential systemic causes of joint and tendon pain, such as rheumatoid arthritis, gout, or other autoimmune conditions. She reviews the patient’s full medical history and medication list to ensure any proposed intervention is medically appropriate and safe.
This integrated diagnostic process allows us to build a complete picture of the patient’s condition, addressing both the local pathology in the tendon and the global biomechanical and systemic factors that contributed to its development. This holistic understanding is essential to designing a treatment plan that supports lasting recovery.
Before we can effectively treat tendinosis, we must be able to see it. While an MRI can provide detailed images, musculoskeletal ultrasound (MSKUS) has emerged as the premier imaging modality for diagnosing and treating tendon pathology in a clinical setting. It is dynamic, cost-effective, and allows for real-time visualization, making it an indispensable tool for procedures like needle fenestration.
On an ultrasound screen, a healthy tendon appears as a bright, white (hyperechoic) structure with a tightly packed, fibrillar pattern, resembling a bundle of cables. When we scan a patient with tendinosis, the image changes dramatically. We can identify the specific hallmarks of the degenerative process:
Using ultrasound, I can show my patients these exact areas of pathology on the screen. This is an incredibly powerful educational tool. It helps them understand that their pain is not “in their head” but is rooted in a real, structural problem. It also allows us to target treatment precisely at the epicenter of the degeneration.
Now that we have established that chronic tendinopathy is a degenerative, non-healing state, the logical goal of treatment is to convert this chronic condition into an acute one, thereby kick-starting a robust, productive healing response. This is precisely the objective of needle fenestration.
The term fenestration comes from the Latin word “fenestra,” meaning “window.” The procedure involves creating multiple tiny openings or “windows” in the degenerative tendon tissue using a fine needle. It is a deceptively simple yet profoundly effective technique, grounded in a deep understanding of wound healing physiology.
The core principle of needle fenestration is mechanotransduction—the process by which cells convert mechanical stimuli into biochemical signals. By repeatedly passing a needle through the area of tendinosis, we are doing several critical things:
By intentionally causing this controlled micro-trauma, we are essentially tricking the body. We are turning a chronic cold injury into an acute, “hot” one. This triggers the natural, orderly wound healing cascade that was previously stalled:
This is why, after a fenestration procedure, we advise patients to avoid anti-inflammatory medications. We have worked hard to create a healing inflammation, and we do not want to suppress it. We are leveraging the body’s innate intelligence to heal itself.
Performing needle fenestration with precision and safety is paramount. Ultrasound guidance is non-negotiable; it transforms the procedure from a blind “peppering” technique into a targeted surgical intervention. Here is a detailed breakdown of how we perform the procedure at our clinic:
Step 1: Patient Positioning and Sterile Preparation
The patient is positioned comfortably to allow optimal access to the affected tendon. For a common procedure like a tennis elbow (lateral epicondylopathy), the patient will be seated or lying down with their elbow flexed on a table. The skin over the treatment area is meticulously cleaned with an antiseptic solution like chlorhexidine or Betadine to create a sterile field. I place a sterile drape around the area and use a sterile probe cover and sterile ultrasound gel.
Step 2: Local Anesthesia
Patient comfort is a priority. I begin by administering a local anesthetic to numb the area. Using a very fine-gauge needle (typically a 27-gauge or 30-gauge), I inject 1% lidocaine without epinephrine into the skin and subcutaneous tissue overlying the tendon. It’s important to anesthetize the path the fenestration needle will take. Still, I avoid injecting the anesthetic directly into the substance of the tendon itself, as some studies suggest local anesthetics can have a mildly toxic effect on tendon cells (tenocytes) (Sung et al., 2020). The goal is to make the procedure as comfortable as possible without interfering with the healing response we aim to create.
Step 3: Ultrasound-Guided Needle Placement
This is the most critical phase of the procedure. I place the high-frequency linear ultrasound transducer over the tendon, oriented along its long axis. This gives me a longitudinal view of the tendon fibers. I can clearly identify the hypoechoic, degenerative area that we need to target.
I then introduce the fenestration needle (typically a 22- or 25-gauge needle, which is slightly larger than the anesthetic needle) into the skin at one end of the transducer. The approach is “in-plane,” which means the needle enters parallel to the transducer face. This allows me to visualize the entire length of the needle—from the skin, through the subcutaneous tissue, and down to the tip—at all times. Continuously visualizing the needle tip is the cardinal rule of ultrasound-guided procedures; it ensures safety and accuracy.
I carefully advance the needle, watching its path on the ultrasound screen, until the tip is precisely positioned at the edge of the targeted degenerative zone within the tendon.
Step 4: The Fenestration “Peppering” Technique
Once the needle tip is inside the tendinotic area, the fenestration process begins. I perform a series of repetitive passes:
This creates a “fanning” or “peppering” motion. I systematically and methodically pass the needle through the entire volume of degenerated tissue, as seen in the long-axis view. I can often feel a change in the tissue as I work. Healthy tendon feels firm and resistant to the needle, whereas tendinotic tissue often feels gritty or soft. As I continue the fenestration, the tissue often feels even softer, a tactile sign that the procedure is effectively breaking up the scar tissue.
The number of passes varies depending on lesion size, but it typically ranges from 15 to 50 passes. The goal is to treat the entire pathologic area thoroughly.
Step 5: Short-Axis Confirmation
After I have thoroughly treated the area in the long-axis view, I rotate the ultrasound transducer 90 degrees into a short-axis (transverse) view. This gives me a cross-sectional image of the tendon. From this perspective, I can confirm that my fenestration passes have covered the lesion not just from top to bottom, but also from side to side (medially and laterally). If I see any untreated pockets of tendinosis, I can make further needle adjustments to ensure comprehensive treatment.
Step 6: Completion and Post-Procedure Care
Once I am satisfied that the entire area of tendinosis has been fenestrated, I withdraw the needle and apply a simple sterile dressing. The entire procedure, from sterile prep to completion, typically takes about 15-20 minutes.
The patient should expect some soreness and aching for the next 2-3 days. This is a positive sign—the desired inflammatory response kicking in. We encourage gentle range of motion but advise avoiding strenuous activity for a period. As mentioned, we strictly advise against NSAIDs or ice, as these would counteract the pro-healing inflammation we have just induced. Simple analgesics like acetaminophen (Tylenol) are permissible if needed for comfort.
While needle fenestration on its own (dry needling) can be a powerful stimulus for healing, we can often enhance and amplify the regenerative process by combining it with the injection of a biological agent. This approach, known as a “wet” technique, provides the fenestrated area with additional building blocks and signaling molecules to supercharge the repair cascade. At our clinic, the two most common adjuncts we use are Prolotherapy and Platelet-Rich Plasma (PRP).
Prolotherapy, short for “proliferative therapy,” is a regenerative injection technique with a long history of use in musculoskeletal medicine. The procedure involves injecting a mild irritant solution—most commonly a hypertonic (highly concentrated) dextrose solution (a form of sugar)—into damaged ligaments, tendons, or joints.
In the context of a fenestration procedure, after I complete the mechanical disruption with the needle, I inject a small volume of the dextrose solution directly into the treated area. I typically use a concentration of 15% to 25% dextrose.
How does it work? The mechanism of prolotherapy is elegant and synergistic with fenestration:
In essence, the dextrose acts as a biological “booster.” The needle fenestration provides the crucial mechanical breakdown of scar tissue and initial bleeding, and the prolotherapy solution then bathes the area in a substance that further stimulates and sustains the release of the body’s own growth factors. It’s like tilling the soil (fenestration) and then adding a potent fertilizer (dextrose) to ensure a rich harvest of new, healthy tissue. Together, they’re often more powerful than either therapy alone.
For more severe or recalcitrant cases of tendinopathy, we may opt for an even more potent biologic: Platelet-Rich Plasma (PRP). PRP therapy involves drawing a small amount of the patient’s own blood, processing it in a centrifuge to separate and concentrate the platelets, and then injecting this platelet-rich concentrate into the injured tissue.
The Process of Creating PRP:
When we combine PRP with needle fenestration, the synergy is profound. The fenestration creates the micro-trauma and “plowed field” for healing. We then inject the PRP directly into this prepared site. This delivers a supraphysiological dose of the very growth factors that drive tissue repair. We are not just stimulating the body to release its own growth factors; we are delivering a highly concentrated, pre-packaged payload of them right to the target.
Studies have shown that PRP can significantly enhance tendon healing by promoting tenocyte proliferation, collagen synthesis, and neovascularization (Mishra & Pavelko, 2006). It provides an incredibly rich biochemical environment that can jump-start healing in even the most chronic, non-responsive tendinopathies.
The decision to use these advanced regenerative injection therapies is made collaboratively. While I perform the ultrasound-guided procedure, Dr. Cardenas provides critical medical oversight. She reviews the patient’s overall health status, including any comorbidities like diabetes or autoimmune disease, and their medication list (e.g., anticoagulant use), to ensure the procedure is safe and appropriate. Her expertise as an internist is invaluable in managing the patient as a whole person, not just a sore tendon. This collaborative governance is a cornerstone of our practice, ensuring the highest level of patient safety and care.
A successful outcome from needle fenestration and regenerative injections does not happen in a vacuum. The procedure itself is a powerful catalyst, but it is only one piece of a much larger puzzle. To achieve lasting relief and prevent recurrence, we must address the underlying reasons why the tendon became overloaded in the first place. This is where the true power of our integrative chiropractic and functional medicine approach comes into play.
The healing process initiated by fenestration unfolds over weeks and months. During this time, the new collagen that is being laid down is weak and disorganized. It must be properly guided and strengthened through a carefully managed process of mechanical loading. This is the remodeling phase and, arguably, the most important for long-term success.
Our comprehensive rehabilitation plan is multifaceted and personalized to each patient, integrating several key components.
As a chiropractor, my primary focus is on restoring optimal function to the entire musculoskeletal system. A tendinopathy in the elbow, for example, is rarely just an elbow problem. It often results from dysfunction up and down the kinetic chain.
Following the procedure, our rehabilitation team guides the patient through a progressive program designed to rebuild the tendon’s capacity to handle load. This is a carefully staged process:
Our team carefully monitors the patient’s response and progresses the exercises appropriately, ensuring we apply enough load to stimulate remodeling without re-injuring the tendon.
Sometimes, a tendon fails to heal for reasons beyond biomechanics. Underlying systemic issues may create a pro-inflammatory or nutrient-deficient state in the body. As a certified functional medicine practitioner, I investigate these root causes.
Let’s consider a typical patient: a 45-year-old recreational tennis player who comes to us with a 9-month history of debilitating right-sided tennis elbow pain. He has tried rest, braces, cortisone shots (which provided only temporary relief), and physical therapy with limited success.
By the 3-month mark, the patient reports a 90% reduction in pain and is back to playing tennis without limitation. A follow-up ultrasound shows a significant improvement in the tendon architecture, with the hypoechoic area filling in with healthier tissue. This success was not due to the PRP injection alone; it resulted from a comprehensive, integrated strategy that addressed the problem from every angle—local and systemic, structural and biochemical.
Chronic tendinopathy can be a frustrating and debilitating condition, largely because traditional approaches have been based on a flawed understanding of its underlying pathology. By recognizing tendinosis as a degenerative, non-healing state rather than an inflammatory one, we open the door to a new, far more effective treatment paradigm.
Ultrasound-guided needle fenestration, especially when combined with regenerative agents like Prolotherapy or PRP, represents a powerful tool in this new paradigm. It allows us to precisely target the diseased tissue and “reboot” the body’s innate healing intelligence, converting a chronic condition into an acute healing opportunity.
However, at Injury Medical Clinic, we know that true, lasting healing requires more than a procedure. It requires a holistic, patient-centered approach that addresses the root causes of the injury. Our unique integrative model brings together the expertise of chiropractic, functional medicine, rehabilitation, and the vital medical oversight of our Director, Dr. Maria Cardenas, creating a synergistic ecosystem of care.
We don’t just treat your pain; we partner with you on a journey to restore function, rebuild resilience, and reclaim your life. We combine the latest evidence-based, minimally invasive procedures with the foundational principles of biomechanical integrity and systemic health. If you have been struggling with chronic tendon pain and are looking for a comprehensive solution, we invite you to explore how our team can help you write a new chapter in your health story.
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General Disclaimer, Licenses and Board Certifications *
Professional Scope of Practice *
The information herein on "Chronic Tendinopathy Treatment Options With Regenerative Orthopedics" is not intended to replace a one-on-one relationship with a qualified health care professional or licensed physician and is not medical advice. We encourage you to make healthcare decisions based on your research and partnership with a qualified healthcare professional.
Blog Information & Scope Discussions
Welcome to El Paso's Premier Wellness and Injury Care Clinic & Wellness Blog, where Dr. Alex Jimenez, DC, FNP-C, a Multi-State board-certified Family Practice Nurse Practitioner (FNP-BC) and Chiropractor (DC), presents insights on how our multidisciplinary team is dedicated to holistic healing and personalized care. Our practice aligns with evidence-based treatment protocols inspired by integrative medicine principles, similar to those on this site and on our family practice-based chiromed.com site, focusing on naturally restoring health for patients of all ages.
Our areas of multidisciplinary practice include Wellness & Nutrition, Chronic Pain, Personal Injury, Auto Accident Care, Work Injuries, Back Injury, Low Back Pain, Neck Pain, Migraine Headaches, Sports Injuries, Severe Sciatica, Scoliosis, Complex Herniated Discs, Fibromyalgia, Chronic Pain, Complex Injuries, Stress Management, Functional Medicine Treatments, and in-scope care protocols.
Our information scope is multidisciplinary, focusing on musculoskeletal and physical medicine; wellness; contributing etiological viscerosomatic disturbances within clinical presentations; associated somato-visceral reflex clinical dynamics; subluxation complexes; sensitive health issues; and functional medicine articles, topics, and discussions.
We provide and present clinical collaboration with specialists from various disciplines. Each specialist is governed by their professional scope of practice and licensure jurisdiction. We use functional health & wellness protocols to treat and support care for musculoskeletal injuries or disorders.
Our videos, posts, topics, and insights address clinical matters and issues that directly or indirectly relate to our clinical scope of practice.
Our office has made a reasonable effort to provide supportive citations and has identified relevant research studies that support our posts. We provide copies of supporting research studies upon request to regulatory boards and the public.
We understand that we cover matters that require an additional explanation of how they may assist in a particular care plan or treatment protocol; therefore, to discuss the subject matter above further, please feel free to ask Dr. Alex Jimenez, DC, APRN, FNP-BC, or contact us at 915-850-0900.
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Blessings
Dr. Alex Jimenez DC, MSACP, APRN, FNP-BC*, CCST, IFMCP, CFMP, ATN
email: coach@elpasofunctionalmedicine.com
Multidisciplinary Licensing & Board Certifications:
Licensed as a Doctor of Chiropractic (DC) in Texas & New Mexico*
Texas DC License #: TX5807, Verified: TX5807
New Mexico DC License #: NM-DC2182, Verified: NM-DC2182
Multi-State Advanced Practice Registered Nurse (APRN*) in Texas & Multi-States
Multi-state Compact APRN License by Endorsement (42 States)
Texas APRN License #: 1191402, Verified: 1191402 *
Florida APRN License #: 11043890, Verified: APRN11043890 *
Colorado License #: C-APN.0105610-C-NP, Verified: C-APN.0105610-C-NP
New York License #: N25929, Verified N25929
License Verification Link: Nursys License Verifier
* Prescriptive Authority Authorized
ANCC FNP-BC: Board Certified Nurse Practitioner*
Compact Status: Multi-State License: Authorized to Practice in 40 States*
Graduate with Honors: ICHS: MSN-FNP (Family Nurse Practitioner Program)
Degree Granted. Master's in Family Practice MSN Diploma (Cum Laude)
Dr. Alex Jimenez, DC, APRN, FNP-BC*, CFMP, IFMCP, ATN, CCST
(Board Certified: Family Practice Nurse Practitioner—Multistate)*
(Licensed Nurse Practitioner & Chiropractor - Multistate)*
Clinical Director
Digital Business Card
Dr. Maria Cardenas, MD
(Board Certified: Internal Medicine)
(Licensed Medical Doctor)
Medical Director, Clinical Director & Collaborative Physician
NPI # 1164426748
MD License #: J2933
Licenses and Board Certifications:
MD: Medical Doctor
DC: Doctor of Chiropractic
APRNP: Advanced Practice Registered Nurse
FNP-BC: Family Practice Specialization (Multi-State Board Certified)
RN: Registered Nurse (Multi-State Compact License)
CFMP: Certified Functional Medicine Provider
MSN-FNP: Master of Science in Family Practice Medicine
MSACP: Master of Science in Advanced Clinical Practice
IFMCP: Institute of Functional Medicine
CCST: Certified Chiropractic Spinal Trauma
ATN: Advanced Translational Neutrogenomics
Memberships & Associations:
TCA: Texas Chiropractic Association: Member ID: 104311
AANP: American Association of Nurse Practitioners: Member ID: 2198960
ANA: American Nurse Association: Member ID: 06458222 (District TX01)
TNA: Texas Nurse Association: Member ID: 06458222
NPI: 1205907805
| Primary Taxonomy | Selected Taxonomy | State | License Number |
|---|---|---|---|
| No | 111N00000X - Chiropractor | NM | DC2182 |
| Yes | 111N00000X - Chiropractor | TX | DC5807 |
| Yes | 363LF0000X - Nurse Practitioner - Family | TX | 1191402 |
| Yes | 363LF0000X - Nurse Practitioner - Family | FL | 11043890 |
| Yes | 363LF0000X - Nurse Practitioner - Family | CO | C-APN.0105610-C-NP |
| Yes | 363LF0000X - Nurse Practitioner - Family | NY | N25929 |
Dr. Alex Jimenez, DC, APRN, FNP-BC*, CFMP, IFMCP, ATN, CCST
(Board Certified: Family Practice Nurse Practitioner—Multistate)*
(Licensed Nurse Practitioner & Chiropractor - Multistate)*
Clinical Director
Digital Business Card
Dr. Maria Cardenas, MD
(Board Certified: Internal Medicine)*
(Licensed Medical Doctor)*
Medical Director, Clinical Director & Collaborative Physician
NPI # 1164426748
MD License #: J2933