The patient's blood is collected into syringes. That blood is spun in a centrifuge at high speeds, which separates their blood into layers (red blood cells, white blood cells, and plasma). The plasma portion, which contains the platelets, is transferred to a different syringe for later injection. In some cases, the plasma is spun in the centrifuge again (a "double spin" technique) to further concentrate the platelets in the plasma. The patient's blood is not exposed to air, and it is transferred by tubing between syringes with a Luer Lock connection.

The WOMAC is a self-administered questionnaire used to evaluate pain, stiffness, and physical function in people with hip and knee osteoarthritis. Only for patients with knee OA.

WOMAC scoring involves summing the scores from its three subscales: pain (5 items), stiffness (2 items), and physical function (17 items). Each subscale has a maximum score (Pain: 20, Stiffness: 8, Physical Function: 68), and a total WOMAC score is calculated by adding these three sub-scores together, for a possible total range of 0-96. Higher scores indicate worse symptoms and function.

The QuickDASH an 11-item patient-reported questionnaire used to measure physical function and symptoms in people with musculoskeletal disorders of the upper limb (arm, shoulder, and hand).

To score the QuickDASH, the first sum is the scores from the 11 items, each rated on a 1-5 Likert scale.

The sum is then used in the formula: QuickDASH Score = ([(sum of n responses)/n]-1)*25), where (n) is the number of completed items. A minimum of 10 out of 11 items must be completed to calculate a score, and the final score ranges from 0 (no disability) to 100 (most severe disability).

This is a 12-item patient-reported outcome measure (PROM) used to assess the health-related quality of life in young, active patients with hip problems. Each question is scored from 0 (worst symptoms/function) to 100 (best symptoms/function). The scores are averaged from all questions, and the final score ranges from 0 (worst symptoms/function) to 100 (best symptoms/function).

The FAOS is a patient-reported questionnaire that measures a person's foot and ankle symptoms and functional status. It is divided into five subscales: pain, other symptoms, function in daily living, function in sports and recreation, and quality of life. Scores for each subscale range from 0 to 100, where 100 represents no symptoms and 0 indicates the worst possible symptoms.

The EQ-5D is a self-report questionnaire that measures health-related quality of life across five dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. It consists of two parts of the EURO-QOL.

The first is an index score, calculated from a 5-digit health state code that corresponds to a person's self-reported level of problems in five dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression). It is calculated by applying a formula to the 5-digit descriptive system code (e.g., 11111 for no problems). This formula uses "social preference weights" for each level in each dimension. A score of 1 represents perfect health, while 0 represents death. Negative scores are possible for health states considered "worse than dead".

The second is an EQ-VAS score, a direct self-assessment on a visual analog scale from 0 (worst imaginable health) to 100 (best imaginable health).