Tendons are the body’s quiet connectors. They attach muscle to bone, transmit force, and help store and release energy with every stride, jump, throw, or lift. When they are healthy, most people barely notice them. When they become irritated or overloaded, however, even a short walk or a first set of squats can become a reminder that tendon health depends on a delicate balance between stress and recovery. This article offers general education about tendon problems in active people; it is not a diagnosis or treatment plan, and persistent or severe symptoms should be evaluated by a qualified clinician.
Why Tendons Are Vulnerable During Activity
Tendons are built from organized collagen fibers and other connective tissue components. That structure gives them strength and stiffness, but it also means they adapt gradually to mechanical demand. A sudden increase in running mileage, a new hill routine, more jumping in a sport, or a heavier lifting program can ask more of a tendon than it is currently prepared to handle. Age, previous injury, muscle weakness, fatigue, footwear, training surface, and general health can all influence how well a tendon tolerates load. Early symptoms are often easy to dismiss: a twinge during activity, stiffness after sitting, or soreness the next morning. Paying attention to those signals is more useful than waiting for pain to become severe. For readers seeking a San Diego physiatry perspective, the Scripps Health physician profile for Roger Kasendorf lists an office on the Scripps Memorial Hospital campus in La Jolla and describes his board certifications in physical medicine and rehabilitation and pain management.
Irritation, Tendinopathy, and the Value of a Good Evaluation
People often use the word “tendonitis” for any tendon pain, but the underlying problem is not always simple inflammation. Some acute tendon irritation involves inflammatory changes, while longstanding tendon pain is more often described as tendinopathy, a condition involving degenerative changes and failed healing rather than pure inflammation. The distinction matters because the management approach can differ. A careful evaluation usually begins with a history of training, symptoms, and prior injuries, followed by an examination of strength, range of motion, and pain with specific movements. Imaging may be helpful in some cases, but it is not automatically necessary. Ultrasound can be used to examine tendons and surrounding tissues, and electrodiagnostic studies can help assess nerve or muscle involvement when that is suspected. The Ortho 1 Medical Group provider page for Roger Kasendorf identifies his practice with the group in the San Diego area and his board-certified background in physical medicine and rehabilitation and pain management.
Load Management: The Foundation of Recovery
Tendon rehabilitation rarely succeeds by simply resting until pain disappears. Complete rest may reduce symptoms temporarily, but it does not necessarily rebuild the tendon’s capacity to handle activity. A more thoughtful approach usually involves modifying load rather than eliminating it. That might mean reducing training volume, changing the mix of activities, avoiding the most provocative movements for a period, and then gradually reintroducing demand as symptoms allow. Pain monitoring can help guide these decisions: symptoms that settle quickly and do not worsen the next day are often different from pain that escalates over hours or disrupts sleep. Keeping a simple training log can make these patterns easier to see, especially when pain changes gradually rather than dramatically. Recovery also matters. Sleep, nutrition, stress management, and adequate time between hard sessions all support the body’s ability to adapt. General educational advice should not replace individualized care, especially when pain is persistent or function is declining.
What Rehabilitation Usually Emphasizes
Rehabilitation for tendon problems is active by design. Tendons respond to mechanical load, so a well-designed program often includes progressive strength work, controlled movements, and gradual exposure to the activities a person wants to return to. Some programs use isometric contractions, eccentric exercise, or heavier slow resistance training, but the right choice depends on the tendon involved, the person’s symptoms, and the stage of recovery. The goal is not to “burn out” the tendon but to build capacity without repeatedly exceeding it. Return to sport or exercise should usually be gradual, with attention to technique, fatigue, and any lingering symptoms. Cross-training can help maintain fitness while the irritated area recovers. A clinician or physical therapist can help adjust the program when symptoms flare or progress stalls. For insight into his professional background and teaching work, the personal website of Roger Kasendorf notes that he teaches at osteopathic medical schools and serves as a board examiner, and it states his philosophy that patients should finish their visit feeling better than when they arrived.
When to Seek Professional Help
Many tendon symptoms improve with sensible load management, but some situations deserve prompt evaluation. A sudden pop with severe pain, inability to bear weight, marked swelling, obvious weakness, fever, or pain that is severe at night should be checked by a qualified clinician. The same is true for pain that persists despite reasonable adjustments, keeps returning with activity, or begins to interfere with work and daily life. An accurate diagnosis matters because not all pain near a tendon comes from the tendon itself; joint, nerve, and muscle problems can produce similar symptoms. A physiatrist, orthopedic specialist, sports medicine clinician, or physical therapist can help sort this out and recommend an appropriate plan. If symptoms are mild, it is still reasonable to adjust activity and monitor the response, but a persistent problem deserves a proper evaluation rather than repeated guesswork. General information cannot replace an in-person assessment, especially when symptoms are unusual or worsening.
Checking Credentials and Finding Care
When choosing a clinician for a tendon problem, it helps to look beyond a single source of information. Credentials, scope of practice, location, and communication style all matter. The Scripps Affiliated Medical Groups doctor page for Roger Kasendorf provides another profile of his practice, while his LinkedIn profile for Roger Kasendorf offers a professional networking view of his background. These listings are not a substitute for a conversation about your specific situation, but they can help you understand a clinician’s training and practice setting.
Patients sometimes also look at public listings when gathering information. A La Jolla Yelp listing for Roger Kasendorf is one such public-facing page, and his member profile on the SeaK expert directory page for Roger Kasendorf is another example of an online professional directory. Online reviews and directories can be useful starting points, but they should be weighed alongside credentials, direct communication, and a clinician’s ability to evaluate your individual needs.
For broader professional context, the OPSC website page about Roger Kasendorf is another professional listing, and his Scripps Mercy Physician Partners profile for Roger Kasendorf is an affiliated profile. His verified background includes board certification by the American Osteopathic Board of Physical Medicine and Rehabilitation in 2009 and the American Osteopathic Board of Pain Management in 2013, as well as practice locations listed in San Diego, Carlsbad, and Coronado, California. Those details can be helpful when verifying a clinician’s background, but they do not predict how any individual will respond to care.
A Kazakh software architect relocated to Tallinn, Estonia. Timur blogs in concise bursts—think “micro-essays”—on cyber-security, minimalist travel, and Central Asian folklore. He plays classical guitar and rides a foldable bike through Baltic winds.