Blood Flow Restriction Training For The Treatment Of Lateral Epicondylopathy

VAS at rest and at dorsal extension of the hand. Measuring the pain on a scale from 1-10. 1 means no pain and 10 means extreme pain. The investigators are measuring the pain on the VAS scale once before and three times after the intervention within a time frame of 3 Months (directly after the intervention, 6 weeks after the intervention and 12 Weeks after the intervention).

A higher score means a worse outcome, a lower score means a better outcome.

The Mayo Elbow Performance Score (MEPS) is a clinical tool used to assess the function of the elbow joint, particularly in patients with elbow disorders or after treatment (e.g., surgery). It evaluates pain, range of motion, function, and elbow stability.

Range of Scores: 0 to 100. 100 represents excellent elbow function with no pain. 75-89 is considered good, 60-74 is fair, and below 60 is poor.

Scores are assessed before and three times after the intervention:

Immediately post-intervention. 6 weeks post-intervention. 12 weeks post-intervention. This allows tracking of elbow recovery and functional improvement over time. A higher score indicates better recovery and elbow function.

It is a questionnaire which is answered by the patients. The SF-36 (Short Form 36) Health Survey is a widely used questionnaire designed to assess an individual's overall health status. It measures eight domains of health:

Physical Functioning Role Physical Role Emotional Mental Health Vitality (Energy/Fatigue) Social Functioning Pain General Health Each domain is scored on a scale from 0 to 100, with 0 representing the worst health status and 100 representing the best. The scores are then used to evaluate physical and mental health, as well as the impact of health on daily functioning.

Range of Scores: 0-100 for each domain. Higher scores represent better health and functioning. Lower scores indicate greater impairment or worse health status. It helps in understanding an individual's quality of life and the impact of disease or disability on their physical and mental well-being.

It is commonly used to evaluate patient health outcomes.

The DASH (Disabilities of the Arm, Shoulder, and Hand) questionnaire is a tool used to assess the physical function and symptoms in patients with musculoskeletal disorders of the upper limb. It evaluates function and pain in daily activities.

Range of Scores: 0 to 100. 0 represents no disability (full function, no pain). 100 represents maximum disability (severe limitation and pain).

The DASH score is typically measured before and three times after an intervention:

Immediately post-intervention. 6 weeks post-intervention. 12 weeks post-intervention. Lower scores indicate better function and less disability, while higher scores show greater functional impairment and pain. The DASH helps to monitor recovery and the effectiveness of treatments for upper limb conditions.

The Patient-Rated Tennis Elbow Evaluation (PRTEE) is a questionnaire specifically designed to assess the severity of symptoms and the impact of lateral epicondylitis (tennis elbow) on a patient's daily life. It evaluates pain and function in the elbow, particularly in activities related to gripping and arm movement.

Range of Scores: 0 to 100. 0 represents no pain or disability. 100 represents maximum pain or disability.

The PRTEE is typically assessed before and three times after an intervention:

Immediately post-intervention. 6 weeks post-intervention. 12 weeks post-intervention. Lower scores indicate less pain and disability, while higher scores suggest greater severity of symptoms. It is used to track the patient's progress and recovery from tennis elbow over time.

clinical Evaluation including: Range of Motion

Strength-Measurement: Dorsal extension of the hand using a dynamometer (MicroFET 2, Hoggan Scientific, Salt Lake City, USA). Measuring the affected elbow and the non-affected elbow

statistical measurement of patients drop-out-quote using a Questionnaire about potential change to surgical Interventions or another type of therapy.

statistical measurement of Lost to follow-up patients

A clinical examination of the elbow is performed. The focus here is on the examination of possible instability in the elbow joint. To this end, valgus-axis stress is applied and the ability to open the joint is checked.

The examination is assessed before and three times after an intervention:

Foldability and instability indicate a poor outcome

clinical evaluation of the elbow using Epicondylitis Tests (Cozen-Test)

clinical evaluation of the elbow using Epicondylitis Tests (Reversed-Cozen-Test)

clinical evaluation of the elbow using Epicondylitis Tests (Maudsley-Test)

A clinical examination of the elbow is performed. The focus here is on the examination of possible instability in the elbow joint. To this end the milking maneuver is examined with possible medial opening.

The examination is assessed before and three times after an intervention:

Foldability and instability indicate a poor outcome

A clinical examination of the elbow is performed. The focus here is on the examination of possible instability in the elbow joint. To this end the tweezer grip on the elbow are examined.

The examination is assessed before and three times after an intervention:

Foldability and instability indicate a poor outcome

A clinical examination of the elbow is performed. The focus here is on the examination of possible instability in the elbow joint. To this end the pivot-shift test on the elbow is examined.

The examination is assessed before and three times after an intervention:

Foldability and instability indicate a poor outcome

A clinical examination of the elbow is performed. The focus here is on the examination of possible instability in the elbow joint. To this end, varus-axis stress is applied and the ability to open the joint is checked.

The examination is assessed before and three times after an intervention:

Foldability and instability indicate a poor outcome

The questionnaire the investigators created, also contains individual questions that ask about possible confounders. These are questions about gender

• Age
• Nicotine abuse
• Type of sport, activity level/intensity, frequency with these questions the investigators would like to identify possible confounders.

measuring secondary objective as a potential confounder

The Return to Sports Rate is a measure used to assess the percentage of individuals who return to their pre-injury or pre-intervention level of sports activity following treatment or rehabilitation. It provides insight into how effectively a patient has recovered and whether they can resume their sports participation at a similar level to before the injury.

In this case, the investigators use a questionnaire to gather information about the type of sport, frequency, and weekly time commitment to sports activities.

By comparing the responses from these time points, the investigators can calculate the Return to Sports Rate. This rate is determined by assessing how many participants have returned to their previous levels of sports activity, or how close they are to their baseline sports participation after the intervention.

The Return to Work Rate is a measure used to assess the percentage of individuals who are able to return to their pre-injury or pre-intervention work activities following treatment or rehabilitation. It helps to evaluate the effectiveness of the intervention in enabling patients to resume their work duties. In this case, the investigators use a questionnaire to gather information about the type of work, work frequency, and the time commitment per week spent on work activities.

By comparing the responses from these time points, the investigators can calculate the Return to Work Rate. This rate is determined by assessing how many participants have returned to their previous work activities or how close they are to their baseline work participation after the intervention.