Cuff Arthropathy Info
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Rotator cuff arthropathy: shoulder arthritis following a long-standing, massive rotator cuff tear and its impact on function.
What you're feeling
You likely have deep pain in your shoulder, especially if you have rotator cuff tear arthropathy or wear-and-tear arthritis. This pain often flares at night, making it hard to sleep on the side of your shoulder. You might feel a sudden increase in pain or a loss of function if a stress reaction occurs at the base of your collarbone. This new pain can be more intense than the pain you felt before a fracture actually breaks.
Daily tasks become difficult because your shoulder feels weak or stiff. You may struggle to reach behind your back to fasten a bra or tuck in your shirt. Simple movements like lifting a cup or reaching for a high shelf can trigger sharp pain. If you have had previous surgery, you might notice that your shoulder does not lift as high as it used to. Your surgeon may see that your range of motion is limited by pain or new weakness.
If you are older than 80, you might experience these symptoms suddenly after a minor bump or fall. However, even younger patients under 60 can face higher risks of complications within the first 90 days. You might notice tenderness along the top of your shoulder blade or the bone behind your collarbone. If you have had steroid use or osteoporosis, these factors can make your shoulder feel unstable. Your surgeon will look for these signs to ensure your implant stays stable and your pain improves.
What's actually happening
In your shoulder, the smooth cartilage that acts like a shock absorber between your bones has worn away. This wear-and-tear arthritis leaves the bone ends rubbing together, causing pain and stiffness. The muscles that usually lift your arm, called the rotator cuff, have torn or failed. Without these muscles, your shoulder loses its natural stability and control.
To fix this, your surgeon replaces the joint with a reverse prosthesis. This device changes how the ball and socket fit together. Instead of relying on your torn muscles, the new joint uses your large shoulder muscle, the deltoid, to lift your arm. This works because the design shifts the center of rotation deeper into the shoulder socket. This change gives your deltoid muscle more leverage, acting like a longer lever to lift your arm more efficiently.
However, this new setup puts different forces on your shoulder bones. The scapula, or shoulder blade, must move differently to let your arm rise. In some cases, the bone can wear down where it rubs against the implant. This is called scapular notching. It happens more often in older patients, especially women over 70 to 80 years old, or those with weak bones like osteoporosis. If a fracture occurs in the shoulder blade, it is a unique risk of this surgery that can change how the joint moves and cause new instability.
What we can do about it
You can start by trying self-management and physiotherapy. Your surgeon may recommend exercises to keep your shoulder moving and strengthen the muscles around it. This approach aims to reduce pain and improve your daily function without surgery. You should give this time to work, as it is the first step before considering more invasive options.
If exercises are not enough, your surgeon may suggest medical management for pain. This can include anti-inflammatory medicines, cortisone injections, or other pain-relieving treatments. These options help manage discomfort while you wait for your shoulder to heal or prepare for surgery. You should try to exhaust these pain-reducing options before using opioid pain medications.
Surgery is considered when conservative care reaches its limit and your pain or function remains poor. Your surgeon may recommend a reverse total shoulder replacement, which is a specific type of joint replacement. This procedure replaces the damaged parts of your shoulder with artificial components to restore movement and relieve pain. It is often the choice when the rotator cuff is damaged or when other treatments have failed.
When to see someone
See your GP if you have persistent pain that does not improve with rest, or if you feel weakness or instability in your shoulder. Ask for a specialist review if your shoulder locks, gives way, or if symptoms interfere with sleep or work. Contact your surgeon immediately for a sudden worsening of pain or loss of function. These signs can indicate a fracture or infection. New pain at the base of your shoulder bone may also be a warning sign. If you have risk factors like osteoporosis or steroid use, be extra careful. Most complications occur within one to two years after surgery, but symptoms can appear later.
