Author: Director Lee Moon-young (Chief Director, Gangbuk Anjeong Korean Medicine Clinic) This content has been prepared in accordance with relevant laws including the Medical Service Act.
Core Answer: The phrase 'calcium deposits in the shoulder' refers to calcific tendinitis (석灰性 腱炎), where calcium crystals accumulate in the shoulder tendons (rotator cuff). The presence of calcium does not necessarily cause pain, but if inflammation occurs, severe shoulder pain and movement restriction can develop.
What "Calcium Deposits in the Shoulder" Means — Core Answer
Calcific tendinitis is a condition in which calcium crystals (hydroxyapatite) accumulate in the rotator cuff tendon tissue of the shoulder, causing inflammation, pain, and movement restriction. According to materials from the Korean Orthopaedic Association, these calcium deposits can cause friction with the bone covering the tendon (acromion) and trigger inflammation, making it one of the most common conditions affecting the shoulder joint. Additionally, according to the definition from AAOS OrthoInfo, calcium accumulation within the rotator cuff tendon is the key pathology, similar to a small limestone-like mass developing inside the tendon.
Simply put, a hardened calcium mass forms inside the shoulder tendon tissue, preventing the tendon from moving normally.
Importantly, the presence of calcium does not necessarily result in pain. According to clinical data, a considerable number of calcium deposits remain asymptomatic and are discovered incidentally on X-ray imaging. The response approach varies depending on the size of the deposit, stage of progression, and whether inflammation is present, so accurate assessment of the condition must come first.
Why Do Calcium Deposits Form in the Shoulder? — Pathogenesis and Progression Stages
The cause is not yet completely understood
According to research published on PubMed (Darrieutort et al.), calcific tendinitis is found in approximately 10-42% of patients with chronic shoulder pain and is a relatively common condition, yet the mechanism causing this pathological calcification remains substantially unclear. Contrary to general assumptions, there is relatively low direct association with trauma or overuse, and it is believed that degenerative changes in tendons, reduced blood flow, and abnormal calcium metabolism work in combination.
According to related clinical data, associations with endocrine disorders including diabetes, thyroid disorders, and kidney stones have also been reported, making it advisable to examine overall health status along with shoulder symptoms. Additionally, it occurs frequently in women in their 40s to 60s, with clinical cases showing that approximately 30% develop it in both shoulders.
4-Stage Natural Course
According to Physiopedia materials, calcific tendinitis undergoes a natural resorption process following cell-mediated calcium deposition, and typically progresses through the following 4 stages:
| Stage | Name | Key Features |
|---|---|---|
| Stage 1 | Formation Phase | Calcium deposition begins in degenerated tendon tissue and gradually expands |
| Stage 2 | Rest Phase | Calcium deposits remain stable; if small, often asymptomatic |
| Stage 3 | Resorption Phase | Calcium softens and dissolves like toothpaste, triggering strong inflammation — most severe pain appears during this phase |
| Stage 4 | Recovery Phase | Calcium is resorbed and tendon tissue gradually recovers |
Among patients entering the resorption phase, some have visited the emergency room with severe pain so intense that they cannot sleep through the night, discovering calcific tendinitis for the first time. Clinical cases frequently report difficulty with movements like raising the arm to the side or forward, with pain spreading from the front of the shoulder to the underside of the arm and around the neck.
Gangbuk Anjeong Korean Medicine Clinic's Approach to Shoulder Calcific Tendinitis — Combined Care with Acupuncture, Bee Venom Acupuncture, and Chuna
Perspective in Korean Medicine
In Korean medicine, the pain pattern of calcific tendinitis is understood in relation to a stagnation of blood condition (瘀血) caused by blocked qi and blood (氣血) flow. Patients with calcific tendinitis often have severe fibrosis accompanying the supraspinatus and rotator cuff regions, and it is suggested that prolonged fibrosis can impede smooth blood flow, creating an environment prone to calcium deposition.
Complementary Role of Combined Korean Medicine Treatment
According to related clinical data, clinical cases have been reported showing improvement in supraspinatus calcific tendinitis with combined Korean medicine treatment including bee venom acupuncture, and cases of shoulder joint calcific tendinitis patients improving after Korean medicine treatment have also been clinically reported. However, these clinical reports suggest the possibility of a complementary role, and treatment results may vary depending on individual circumstances and stage.
Gangbuk Anjeong Korean Medicine Clinic combines high-concentration bee venom acupuncture and acupuncture treatment with skilled chuna therapy to promote circulation recovery and pain relief around the shoulder, with weekly customized prescriptions that confirm symptom changes each week. High-concentration bee venom acupuncture does not contain steroid components, so there is less concern about tolerance with repeated procedures, and it is being used as a complement for inflammation relief in various joint areas including fingers, wrists, and shoulders. Through a weekly prescription system, fine-tuned response is possible at each stage of the resorption and recovery phases as symptoms change.
Limitations and Scope of Application — When Additional Testing and Specialist Care Are Needed
According to materials from the Korean Orthopaedic Association, calcific tendinitis may undergo natural resorption in some cases, so conservative treatment is prioritized initially. However, in the following situations, it is recommended to first undergo imaging tests and specialist evaluation:
If any of the following items apply, imaging tests and additional specialist care are recommended:
• When pain is so severe that the arm cannot be moved at all — early evaluation is necessary as acute resorption phase is possible • When there is no improvement despite receiving conservative treatment for several months or longer — additional options such as extracorporeal shock wave therapy, needle lavage, or arthroscopic surgery should be considered • When rotator cuff tear is suspected to accompany the condition — since differentiation is difficult with X-rays alone, ultrasound or MRI imaging is recommended • When X-ray findings are present but the stage and location are unclear — treatment priority varies depending on the stage
Korean medicine treatment is utilized as a complementary role for pain relief and functional recovery in mild to moderate levels of pain, and in cases of severe symptoms, Korean medicine alone may be difficult to manage. Gangbuk Anjeong Korean Medicine Clinic supports coordination with imaging tests such as MRI and X-rays through a network of cooperating hospitals, making it possible to determine accurate stage and explore treatment direction together.
Those experiencing shoulder pain at Suyu Station, those seeking shoulder treatment at a Korean medicine clinic in Gangbuk-gu, and those with inquiries related to shoulder calcium deposits in Dobong-gu can all receive the same level of care.
Receive Shoulder Pain Consultation at Gangbuk Anjeong Korean Medicine Clinic in the Suyu Area
The direction suitable for your specific symptom situation can be confirmed through consultation. Gangbuk Anjeong Korean Medicine Clinic provides consultations 365 days a year starting at 8 AM near Exit 3 of Suyu Station, and you can conveniently visit through Naver reservations.
Shoulder calcific tendinitis varies in treatment priority and approach depending on the progression stage (formation, rest, resorption, and recovery phases). Whether the pain is mild or the condition was just discovered, or if you have already received conservative treatment but have not yet achieved sufficient improvement — identifying the current state first is most important. In a private individual treatment space, receive careful consultation matching your shoulder condition along with constitution diagnosis based on 8 body types.
Q&A
Q1. If calcium deposits are found in the shoulder, must surgery definitely be performed?
Not necessarily. Calcific tendinitis often undergoes natural resorption, so initially medication and physical therapy and other conservative treatments are prioritized. Only when conservative treatment shows no response are extracorporeal shock wave therapy, needle lavage, arthroscopic surgery, and other options considered in stages. Treatment options vary depending on stage and symptom severity, so accurate assessment of condition must be performed first.
Q2. Why does calcific tendinitis hurt more at night?
As the resorption phase begins, the calcium softens and dissolves, triggering a strong inflammation response in surrounding tissue. During the day, pain is felt relatively less due to activity and distraction, but at night in a resting state, pain becomes more acutely perceived. In severe cases, some patients have visited the emergency room with such intense pain that they cannot move their arm at all, discovering calcific tendinitis for the first time.
Q3. Is shoulder calcium deposit treatment possible at a Korean medicine clinic?
Korean medicine treatment is not a method to physically remove calcium deposits directly. Acupuncture, bee venom acupuncture, and chuna work to improve qi and blood circulation around the shoulder and alleviate inflammation and pain responses in a complementary manner. According to related clinical data, clinical cases have been reported showing improvement in supraspinatus calcific tendinitis with combined Korean medicine treatment including bee venom acupuncture. Since the appropriate approach varies depending on symptom stage and severity, it is recommended to first confirm the exact condition after visiting the clinic.
ℹ️ Treatment effects vary among individuals; please consult with a specialist before making a decision.