Exercises will be performed for 45 minutes, twice a week, for a total of 12 sessions, for a total of 6 weeks. In the telerehabilitation group, breathing exercises, upper extremity pumping exercises, scar tissue massage and flexion movements up to 90 degrees will be applied for the first 2 weeks at the beginning of the treatment, through a meeting with the patients via zoom application. 2-6. Between weeks, pendulum exercise, shoulder rotation, lifting overhead with clasped hands while sitting and lying down, wand exercise, snow angels, clock on the wall exercise, m. Pectoralis minor and major stretching, standing trunk rotation, and scapulo-thoracic joint stabilization exercises will be applied. 6-8. In the following weeks, in addition to the previous exercises, strengthening exercises will be applied in all directions with theraband and weights.

With the videos uploaded to the Becure application, breathing exercises, upper extremity pumping exercises, scar tissue massage and flexion movements up to 90 degrees will be applied in the first 2 weeks. 2-6. Between weeks, pendulum exercise, shoulder rotation, lifting overhead with clasped hands while sitting and lying down, wand exercise, snow angels, clock on the wall exercise, m. Pectoralis minor and major stretching, standing trunk rotation, and scapulo-thoracic joint stabilization exercises will be applied. 6-8. Between weeks, in addition to the previous exercises, strengthening exercises will be applied in all directions with theraband and weight. Exercises will start with 2 sets of 5-10 repetitions and progress to 10-15 repetitions.

The scale is grouped under three subheadings containing 30 questions. Sub-beliefs are the general well-being scale, the functional scale including the subheadings of physical function, general function, cognitive function, mental function and social function, and the symptom consisting of fatigue, pain, stomach brain - enthusiasm, dyspnea, insomnia, fatigue, constipation, diarrhea and material. It includes the scale. The first 28 of the 30 questions in the scale are a four-point Likert type scale and the items are; It is evaluated as Not at all: 1, A little: 2, Quite a bit: 3 or A lot: 4 points. In the 29th and 30th questions of the scale, the patient can be assigned a scale from 1 to 7 (1: Very poor and 7: Excellent), and in the 30th question, a general quality of life evaluation is requested. All scales are scored between 0-100. A high score from the functional scale section indicates good functional status, while a high score from the symptom scale section indicates low vitality.

The upper extremity muscle strength of the subjects will be measured with the J Tech Commander Muscle Tester® manual dynamometer during maximal voluntary isometric muscle contraction. Measurements will be made on the affected and healthy side upper extremities, shoulder flexion and abduction muscle strength in the sitting position, and internal and external rotation muscle strength in the supine position.

Hand grip strength was evaluated with the Saehan Hydraulic Hand Dynamometer. Measurements will be made on the affected side in a sitting position as defined by the American Society of Hand Therapists, shoulder adducted, arm next to the body, elbow 90° flexed, forearm and wrist in neutral position. The results will be recorded in kg and each measurement will be repeated three times. For result measurements, the values will be averaged and a one-minute rest period will be given between measurements.

Individuals' fear of movement levels will be evaluated using the Tampa Kinesiophobia Scale (TKS). TKS is a checklist consisting of 17 questions and was developed to measure fear of movement/re-injury. The scale evaluates fear of movement with a 4-point Likert-type scoring system (1 = I strongly disagree, 4 = I completely agree). 4,8,12,16. While the total score calculated by reversing the questions is determined between 17-68, a higher score means that the person has a greater fear of movement.

VAS is one of the simple and common methods used to evaluate pain intensity. It is a 10 cm long ruler and generally does not have any markings, numbers or writings on it. Patients are asked to mark the appropriate range for their pain at rest and during activity on a 10 cm long chart (0: no pain; 10 is unbearable pain). The point marked by the patients is measured and recorded in millimeters from the left end with the help of a ruler. It is included in the literature as a sensitive and reliable method.

The Global Rating of Change (GRoC) is a scale that assesses whether the patient condition has gotten worse, better, or stayed the same and to quantify the magnitude of that change, typically following treatment.

The Functional Assessment of Cancer Therapy - Breast (FACT-B) is a 37-item instrument designed to measure five domains of HRQOL in breast cancer patients.