Orthopedics is a branch of medicine that focuses on the musculoskeletal system, which includes bones, joints, ligaments, tendons, muscles, and nerves. Orthopedics is divided into several subspecialties which are:

1. Spine surgery: This subspecialty focuses on the treatment of conditions affecting the spinal column and its surrounding structures, such as herniated disks, scoliosis, and spinal tumors.
2. Sports medicine: This subspecialty focuses on the treatment of injuries related to physical activity and sports. This includes conditions such as ligament tears, muscle strains, and stress fractures.
3. Trauma: This subspecialty focuses on the treatment of injuries caused by accidents or other traumatic events, such as fractures, dislocations, and ligament tears.
4. Hand surgery: This subspecialty focuses on the treatment of conditions affecting the hand and upper extremities, such as carpal tunnel syndrome, trigger finger, and tendonitis.
5. Foot and ankle surgery: This subspecialty focuses on the treatment of conditions affecting the foot and ankle, such as bunions, hammertoes, and heel spurs.
6. Joint replacement: This subspecialty focuses on the surgical replacement of a damaged joint with an artificial one, such as knee and hip replacement
7. Pediatric orthopedics: This subspecialty focuses on the diagnosis and treatment of musculoskeletal problems in children, such as congenital deformities and developmental dysplasia of the hip.
8. Geriatric orthopedics: This subspecialty focuses on the diagnosis and treatment of musculoskeletal problems in older adults, such as osteoarthritis, osteoporosis, and age-related fractures.

These are some of the main subspecialties within orthopedics, but there are other areas of focus as well. Orthopedic doctors may specialize in one or more of these subspecialties, depending on their training and interests.

The main difference between a physiotherapist and an orthopedic is the area of focus and specialization.

• A physiotherapist is a healthcare professional who is trained to assess and treat a wide range of conditions that affect the body's movement and function.
• They use physical techniques such as exercise, manual therapy, electrotherapy, and education to help patients regain strength, flexibility, and mobility, and manage pain and injury.
• On the other hand, an orthopedic is a medical doctor who specializes in the diagnosis, treatment, and management of conditions that affect the musculoskeletal system, which includes the bones, joints, muscles, tendons, ligaments, and other connective tissues.
• They may perform surgeries, prescribe medication, and refer patients to physiotherapists for rehabilitation.

In summary, a physiotherapist is a healthcare professional who specializes in the rehabilitation and management of musculoskeletal conditions through the use of physical techniques, while an orthopedic is a medical doctor who specializes in the diagnosis, treatment, and management of musculoskeletal conditions, including surgical intervention if necessary. Both professions work together to provide comprehensive care for patients with musculoskeletal conditions.