The key point in surgical or injury recovery is muscle wasting(atrophy) and malnutrition. Any injury, surgical or accident, results in muscle wasting around the joint/injury. The injury results in decreased activity, which further promotes atrophy. With injury/pain, and pain medications(opiates), there is a decrease in appetite leading to inadequate calories and protein. This further exacerbates muscle wasting. Nandrolone has shown massive benefits in regards to these conditions.
The net effect is a prolonged and painful recovery. When a patient has a lot of pain, loss of range-of-motion, and/or weakness, it is hard for them to stick to the rehab protocol recommended by their physicians. The longer the patient has such difficulty, the more likely they will have incomplete recovery and a less satisfactory outcome. Incomplete recovery means chronic weakness, loss of balance, greater risk of falls, and fractures.