Frozen Shoulder

I see many patients daily with a certain degree of stiffness of the joint contributing to their shoulder pain.  Sometimes the loss of motion is obvious and dramatic and sometimes it is very subtle and only noted when we compare the other shoulder.  Below is some educational information from the AAOS that I found very helpful for patients.

Frozen shoulder, also called adhesive capsulitis, causes pain and stiffness in the shoulder. Over time, the shoulder becomes very hard to move.

Frozen shoulder occurs in about 2% of the general population. It most commonly affects people between the ages of 40 and 60, and occurs in women more often than men.

Anatomy

Your shoulder is a ball-and-socket joint made up of three bones: your upper arm bone (humerus), your shoulder blade (scapula), and your collarbone (clavicle).

The head of the upper arm bone fits into a shallow socket in your shoulder blade. Strong connective tissue, called the shoulder capsule, surrounds the joint.

To help your shoulder move more easily, synovial fluid lubricates the shoulder capsule and the joint.

The shoulder capsule surrounds the shoulder joint and rotator cuff tendons.

Reproduced and modified from The Body Almanac. (c) American Academy of Orthopaedic Surgeons, 2003.

Description

In frozen shoulder, the shoulder capsule thickens and becomes tight. Stiff bands of tissue — called adhesions — develop. In many cases, there is less synovial fluid in the joint.

The hallmark sign of this condition is being unable to move your shoulder - either on your own or with the help of someone else. It develops in three stages:

Freezing

In the"freezing" stage, you slowly have more and more pain. As the pain worsens, your shoulder loses range of motion. Freezing typically lasts from 6 weeks to 9 months.

Frozen

Painful symptoms may actually improve during this stage, but the stiffness remains. During the 4 to 6 months of the "frozen" stage, daily activities may be very difficult.

Thawing

Shoulder motion slowly improves during the "thawing" stage. Complete return to normal or close to normal strength and motion typically takes from 6 months to 2 years.

In frozen shoulder, the smooth tissues of the shoulder capsule become thick, stiff, and inflamed.

Cause

The causes of frozen shoulder are not fully understood. There is no clear connection to arm dominance or occupation. A few factors may put you more at risk for developing frozen shoulder.

Diabetes. Frozen shoulder occurs much more often in people with diabetes, affecting 10% to 20% of these individuals. The reason for this is not known.

Other diseases. Some additional medical problems associated with frozen shoulder include hypothyroidism, hyperthyroidism, Parkinson's disease, and cardiac disease.

Immobilization. Frozen shoulder can develop after a shoulder has been immobilized for a period of time due to surgery, a fracture, or other injury. Having patients move their shoulders soon after injury or surgery is one measure prescribed to prevent frozen shoulder.

Symptoms

Pain from frozen shoulder is usually dull or aching. It is typically worse early in the course of the disease and when you move your arm. The pain is usually located over the outer shoulder area and sometimes the upper arm.

Doctor Examination

Physical Examination

Your doctor will test the range of motion in your shoulder.

Reproduced with permission from JF Sarwark, ed: Essentials of Musculoskeletal Care, ed 4. Rosemont, IL, American Academy of Orthopaedic Surgeons, 2010.

After discussing your symptoms and medical history, your doctor will examine your shoulder. Your doctor will move your shoulder carefully in all directions to see if movement is limited and if pain occurs with the motion. The range of motion when someone else moves your shoulder is called "passive range of motion." Your doctor will compare this to the range of motion you display when you move your shoulder on your own ("active range of motion"). People with frozen shoulder have limited range of motion both actively and passively.

Imaging Tests

Other tests that may help your doctor rule out other causes of stiffness and pain include:

X-rays. Dense structures, such as bone, show up clearly on x-rays. X-rays may show other problems in your shoulder, such as arthritis.
Magnetic resonance imaging (MRI) and ultrasound. These studies can create better images of problems with soft tissues, such as a torn rotator cuff.

Treatment

Frozen shoulder generally gets better over time, although it may take up to 3 years.

The focus of treatment is to control pain and restore motion and strength through physical therapy.

Nonsurgical Treatment

More than 90% of patients improve with relatively simple treatments to control pain and restore motion.

Non-steroidal anti-inflammatory medicines. Drugs like aspirin and ibuprofen reduce pain and swelling.
Steroid injections. Cortisone is a powerful anti-inflammatory medicine that is injected directly into your shoulder joint.
Physical therapy. Specific exercises will help restore motion. These may be under the supervision of a physical therapist or via a home program. Therapy includes stretching or range of motion exercises for the shoulder. Sometimes heat is used to help loosen the shoulder up before the stretching exercises.. Below are examples of some of the exercises that might be recommended.

• External rotation — passive stretch. Stand in a doorway and bend your affected arm 90 degrees to reach the doorjamb. Keep your hand in place and rotate your body as shown in the illustration. Hold for 30 seconds. Relax and repeat.

External Rotation - Passive Stretch
Reproduced with permission from JF Sarwark, ed: Essentials of Musculoskeletal Care, ed 4. Rosemont, IL, American Academy of Orthopaedic Surgeons, 2010.
• Forward flexion — supine position. Lie on your back with your legs straight. Use your unaffected arm to lift your affected arm overhead until you feel a gentle stretch. Hold for 15 seconds and slowly lower to start position. Relax and repeat.

Forward Flexion - Supine Position
Reproduced with permission from JF Sarwark, ed: Essentials of Musculoskeletal Care, ed 4. Rosemont, IL, American Academy of Orthopaedic Surgeons, 2010.
• Crossover arm stretch. Gently pull one arm across your chest just below your chin as far as possible without causing pain. Hold for 30 seconds. Relax and repeat.

Crossover Arm Stretch
Reproduced with permission from JF Sarwark, ed: Essentials of Musculoskeletal Care, ed 4. Rosemont, IL, American Academy of Orthopaedic Surgeons, 2010.

Surgical Treatment

If your symptoms are not relieved by therapy and anti-inflammatory medicines, you and your doctor may discuss surgery. It is important to talk with your doctor about your potential for recovery continuing with simple treatments, and the risks involved with surgery.

The goal of surgery for frozen shoulder is to stretch and release the stiffened joint capsule. The most common methods include manipulation under anesthesia and shoulder arthroscopy.
Manipulation under anesthesia. During this procedure, you are put to sleep. Your doctor will force your shoulder to move which causes the capsule and scar tissue to stretch or tear. This releases the tightening and increases range of motion.
Shoulder arthroscopy. In this procedure, your doctor will cut through tight portions of the joint capsule. This is done using pencil-sized instruments inserted through small incisions around your shoulder.
In many cases, manipulation and arthroscopy are used in combination to obtain maximum results. Most patients have very good outcomes with these procedures.

These photos taken through an arthroscope show a normal shoulder joint lining (left) and an inflamed joint lining damaged by frozen shoulder.

Recovery. After surgery, physical therapy is necessary to maintain the motion that was achieved with surgery. Recovery times vary, from 6 weeks to three months. Although it is a slow process, your commitment to therapy is the most important factor in returning to all the activities you enjoy.
Long-term outcomes after surgery are generally good, with most patients having reduced or no pain and greatly improved range of motion. In some cases, however, even after several years, the motion does not return completely and a small amount of stiffness remains.
Although uncommon, frozen shoulder can recur, especially if a contributing factor like diabetes is still present.




From the AAOS


Thanks,


JTM, MD

Osteonecrosis of the Knee

A relatively common cause of knee pain in older women occurs when a segment of bone loses its blood supply and begins to die. This condition is called osteonecrosis, which literally means "bone death." More than 3 times as many women as men are affected; most are over the age of 60 years.

Cause

In the knee, the knobby portion of the thighbone on the inside of the knee (the medial femoral condyle) is most often affected. However, osteonecrosis of the knee may also occur on the outside of the knee (the lateral femoral condyle) or on the flat top of the lower leg bone (tibial plateau).

The exact cause of the osteonecrosis of the knee is not yet known. One theory is that a stress fracture, combined with a specific activity or trauma, results in an altered blood supply to the bone. Another theory supposes that a build-up of fluid within the bone puts pressure on blood vessels and diminishes circulation.

Osteonecrosis of the knee is also associated with certain conditions and treatments, such as obesity, sickle cell anemia, lupus, kidney transplants, and steroid therapy. Steroid-induced osteonecrosis frequently affects multiple joints and is usually seen in young patients.

Regardless of the cause, if the disease is not identified and treated early, it can develop into severe osteoarthritis.

Symptoms

• Sudden pain on the inside of the knee, perhaps triggered by a specific activity or minor injury
• Increased pain at night and with activity
• Swelling over the front and inside of the knee
• Heightened sensitivity to touch in the area
• Limited motion due to pain

Diagnosis

Osteonecrosis of the knee develops through four stages, which can be identified by symptoms and X-rays.

Stage I: Symptoms are most intense in the earliest stage. Symptoms may continue for 6 to 8 weeks and then subside. Because X-rays are normal, a positive bone scan is needed to make the diagnosis. Treatment at this point is not surgical. The focus is on pain relief and protected weightbearing.

Stage II: It may take several months for the disease to progress to Stage II. At this point, X-rays will show that the rounded edge of the thighbone is starting to flatten out. An MRI or bone scan can be used to diagnose the disease. A computed tomography (CT) scan may also be used to measure the affected area.

Stage III: By the time the disease reaches stage III (3 to 6 months after onset), it is clearly visible on X-rays and no other diagnostic tests are needed. The articular cartilage covering the bone begins to loosen as the bone itself begins to die. Surgical treatments may be considered at this point.

Stage IV: At this point, the bone begins to collapse. The articular cartilage is destroyed, the joint space narrows, and bone spurs may form. Severe osteoarthritis results and joint replacement surgery may be necessary.

Treatment

Nonsurgical Treatment

In the early stages of the disease, treatment is not surgical. If the affected area is small, this treatment may be all that is needed.

Options include:

• Medications to reduce the pain
• A brace to relieve pressure on the joint surface
• A conditioning program with exercises to strengthen your thigh muscles
• Activity modifications to reduce knee pain

Surgical Treatment

If more than half of the bone surface is affected, you may need surgical treatment. Several different procedures may be used to treat osteonecrosis of the knee.

Among the surgical options are:

• Arthroscopic cleansing (debridement) of the joint
• Drilling to reduce pressure on the bone surface
• Procedures to shift weightbearing away from the affected area
• Unicompartmental or total knee replacement

From the AAOS

Thanks,

JTM, MD