Medial Epicondyle Tendinopathy

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Original Editors - Anouk Toye

Top Contributors - Sanne Delporte, Anouk Toye, Darrell Blommaert, Admin, Alynn De Maeyer, Shaimaa Eldib, Rachael Lowe, Lauren Lopez, Fasuba Ayobami, Kim Jackson, 127.0.0.1, Kai A. Sigel and Naomi O'Reilly  

Search Strategy

I would recommend to consult PubMed. The keywords I used to become several references were:
- ‘medial epicondylitis’ (108 results – 12 free full texts)
- ‘medial epicondylitis AND physical therapy’ (11 results – 1 free full text)
- ’medial epicondylitis AND diagnosis’ (81 results - 7 free full texts)
- ’medial epicondylitis AND treatment’ (75 results – 7 free full texts),
- ‘Golfer’s elbow’ (19 results – 2 free full text)
- ‘Golfer’s elbow test AND physical therapy’ (3 results)
- ‘Golfer’s elbow AND diagnosis’ (12 results – 2 free full texts)
- ‘Golfer’s elbow AND treatment’ (15 results – 1 free full text).

It’s also very helpful to check the references of each usable article.

Other sites to consult are Web of knowledge, Sholar.google.com and Books.google.com.

Definition/Description

Medial epicondylitis is mostly an overload injury. The most sensitive region is located near the origin of the wrist flexors on the medial epicondyle of the humerus. Sometimes the patient also experiences pain on the ulnar side of the forearm, the wrist and occasionally in the fingers. Although epicondylitis means there is an inflammation, there is some controversy with this pathology. Histologically it has been shown that medial epicondylitis is the result of microtearing in the tendon that isn’t fully relapsed (=To fall or slide back into a former state). Some physical therapists prefer the term tendonosis instead of epicondylitis.

In some cases, the symptoms of golfer's elbow (medial epicondylitis) are due to inflammation. In an acute injury, the body undergoes an inflammatory response. Special inflammatory cells make their way to the injured tissues to help them heal. Conditions that involve inflammation are indicated by -itis on the end of the word. For example, inflammation in a tendon is called tendonitis. Inflammation around the medial epicondyle is called medial epicondylitis.

However, golfer's elbow often is not caused by inflammation. Rather, it is a problem within the cells of the tendon. Doctors call this condition tendonosis. In tendonosis, wear and tear is thought to lead to tissue degeneration. A degenerated tendon usually has an abnormal arrangement of collagen fibers.
Instead of inflammatory cells, the body produces a type of cells called fibroblasts. When this happens, the collagen loses its strength. It becomes fragile and can break or be easily injured. Each time the collagen breaks down, the body responds by forming scar tissue in the tendon. Eventually, the tendon becomes thickened from extra scar tissue. 

These conditions are caused by a constant trauma and tension of the tendon attachment to the medial epicondyles.

Clinically Relevant Anatomy

Osteology: Medial epicondyle of the Humerus

Musculature: Wrist Flexor Group
- M. pronator teres
- M. flexor carpi radialis
- M. palmaris longus
- M. flexor digitorum superficialis
- M. flexor carpi ulnaris

All these muscles have the same origin: the medial epicondyle.

Epidemiology /Etiology

Its pseudonym ‘golfer’s elbow’ is easily remembered but misleading as 90 to 95% of all cases do not involve sportsmen (level of quality A2) (level of quality D). Symptoms may be produced by sudden violence to these tendons by repeated usage or by chronic strain. In many cases trauma at work had been identified as the cause of the symptoms (level of quality A2).

More specific occupational physical factors associated with medial epicondylitis are forcefull activities among men and with repetitive movements of the arm among women.
Current smoker and former smoker are also associated with medial epicondylitis, so do patients who suffer from diabetes type 2 (level of quality A2).

Characteristics/Clinical Presentation

As medial epicondylitis is an inflammation of the tendon of the flexor group attached to the medial epicondyle of the humerus, the most sensitive region will be located near the origin of the wrist flexor group.
The patient usually complains of pain about the elbow distal to the medial epicondyle of the humerus with radiation up and down the arm, most common on the ulnar side of the forearm, the wrist and occasionally in the fingers (level of quality A1).
Other characteristics are the local tenderness over the medial epicondyles and the conjoined tendon of the flexor group, without evidence of swelling or erythema.
The pain evokes by resisted flexion of the wrist end by pronation. The pain usually notices a weakness of hand grip (level of quality A1).

Differential Diagnosis

When diagnosing a medial epicondylitis, the therapist always has to consider other pathologies such as:
- a compression neuropathy of the ulnar and the median nerve
- ulnar collateral ligament instability
- ulnar neuritis
- Obsessive compulsive disorder (OCD)
- Medial collateral ligament sprain
- Adhesive_Capsulitis
- Cervical_Radiculopathy
- Osteoarthritis
- Flexor-pronator strain

The use of Polk's_Test may help the clinician to diagnostically differentiate between lateral en medial epicondylitis. Other various orthopedic testing procedures including Cozen’s_Test, Golfer’s_Elbow_Test, Mill’s_Test and Kaplan’s test are used for the clinical differentiation between lateral en medial epicondylitis (level of quality D) .

Diagnostic Procedures

As epicondylitis is essentially a musculotendinous condition, diagnosis is essentially clinical.
Radiographs are typically negative unless the chronicity of the condition had allowed periostitis to develop on the affected epicondyle (level of quality D).

The diagnosis of medial epicondylitis is based on local pain at the elbow, tenderness at the epicondyle on palpation and pain at the epicondyle on resisted isometric flexion and pronation of the wrist (level of quality A1) (level of quality A2).
In particular the Golfer’s_Elbow_Test, an orthopedic test, is described as being helpful to diagnose medial epicondylitis (level of quality D).

Outcome Measures

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Examination

- Tenderness to palpation (usually over m. pronator teres and m. flexor carpi radialis)
- Local swelling and warmth
- Range of motion in the beginning of the disease can be full, but later on there is a possibility of a decreased range    of motion

Medical Management

Surgical treatment of medial epicondylitis
When conservative management fails and there is persistent pain after 6 to 12 months and all other pathologies are considered, surgical treatment must be considered.
Surgery for failure of conservative treatment relieves pain, restored strength and allows a return to the previous level of daily living and sports activity (level of quality C).

Mini-open muscle resection procedure under local anesthesia
For medial epicondylitis the degenerative tissue at the origine of the flexor carpi radialis brevis is removed during a mini-open muscle resection procedure.
This procedure produces low levels of postoperative pain, a short hospital stay and rehabilitation period and early return to daily activities.
The limitations of and open flexor carpi radialis brevis release include late return to work and sporting activities due to a prolongation of the postoperative recovery time, a risk of posterolateral instability, and the formation of nueroma after surgery (level of quality B).

Steroïd injections
The indication for injection therapy for epicondylitis is usually chronic pain and disability not relieved by more conservative means, or severe acute pain with functional impairment that calls for a more rapid intervention.
These injections seem to have a short term effect ( 2-6 weeks) and effective in providing early symptom relief (level of quality A1).

Autologous blood injection
The combined treatment of dry needling and ultrasound guided autologous blood injection is discribed as a effective way to treat patients with refractory lateral and medial epicondylitis. The hypothesis of the mechanism is that the transforming growth factor-β and basic fibroblast growth factor carried in the blood act as humoral mediators to induce the healing cascade (level of quality C).

Physical Therapy Management

Nonsurgical treatment
The main goal of the conservative treatment is to obtain pain relieve and an inflammation reduce. These two things will help to achieve a proper rehabilitation and later a return to activities.

Nonsurgical treatment can be divided into three phases.

- Phase 1: The patient immediately has to stop the offending activities. It’s not recommended to stop all activities or sports since that can cause atrophy of the muscles.
The therapy starts with ‘PRICEMM’, which stands for ‘prevention/protection, rest, ice, compression, elevation, modalities and medication'. The affected elbow should be iced several times a day for about a quarter. This improves the local vasoconstrictive and analgesic effects. As for medication the patient can take nonsteroidal anti-inflammatory medication (NSAID).
If the patient’s condition doesn’t improve, a period of night splinting is adequate. This is usually accompanied with a local corticosteroid injection around the origin of the wrist flexor group. Some examples of a physical therapy modality are ultrasound and high-voltage galvanic stimulation (but there’s not yet a study that notes their efficacy).
Counterforce bracing is recommended for athletes with symptoms of medial epicondylitis. It can also aid when the patient is returning to sport.

- Phase 2: As soon as we see an improvement of phase 1, a well guided rehabilitation can be started. The first goal of the second phase is to establish full, painless, wrist and elbow range of motion. This is soon followed by stretching and progressive isometric exercises. These exercises first should be done with a flexed elbow to minimize the pain. As soon as the patient has made some progress the flexion of the elbow can be decreased. As the flexibility and the strength of the elbow area return, concentric and eccentric resistive exercises are added to the rehabilitation program. The final part of this phase is a simulation of sport or occupation of the patient.

- Phase 3: When the patient is able to return to his sport it is necessary to take a look at his equipment and/or technique. These precautions ought to be taken to allow a safe return to activities (level of quality D).

Postoperative management
7 to 10 days after the operation, the splint and skin sutures are removed. At this point the physical therapy can start. The beginning of the treatment is characterized by gentle passive and active hand, wrist and elbow exercises. 3 to 4 weeks later gentle isometrics can be done and at 6 weeks the patient can start with more resistive exercises. At last a progressive strengthening program has to be followed. In normal cases the patient can return to activities 3 to 6 months after the operation (level of quality D).

Key Research

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Clinical Bottom Line

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References

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