Shoulder injections to treat rotator cuff injuries typically target the small space between 2 bones: The bottom of the acromion (the top outer edge of the shoulder blade) The top of the shoulders ball-and-socket joint (glenohumeral joint) This space is called the subacromial space and the injections are called subacromial injections
The most common ones among real-world patients seem to be headaches, nausea, dizziness, and injection site redness or irritation that should subside with use
You should also contact your GP if: You are unable to attend scheduled maintenance injections, as missing doses can lead to symptom recurrence You develop new symptoms that might indicate other deficiencies or health problems You are planning pregnancy, as B12 requirements may change You experience persistent side effects such as headaches, dizziness, or gastrointestinal symptoms If you experience any side effects, talk to your doctor, pharmacist or nurse
This may help explain why it is little used by health professionals
The blind loop syndrome may produce deficiency of vitamin B 12 or folate