Call Us: 770-232-7100
1810 Peachtree Industrial Blvd, Suite 130, Duluth GA, 30097

Therapeutic Dynamics Modalities

We include in our therapeutic dynamics modalities ultrasound, iontophoresis and electrical stimulation among others to assist in the progression of the patient’s rehabilitation.

Therapeutic Ultrasound is a method of stimulating tissue beneath the skin’s surface, using sound waves. It is sort of a very high frequency sound massage, which can penetrate up to 4 inches below the surface of your skin. The sound waves are very high frequency, typically between 800,000 Hz and 2,000,000 Hz. This sound cannot be heard by humans or animals. Humans can only hear sounds up to about 20,000 Hz. This very high frequency sound, like medicine, affects very small molecules and cells in the body and actually causes them to vibrate. Through a process called vasodilation, the stimulation created by the ultrasound unit will cause your body to pump oxygen and nutrient rich blood to the treated area. This supply of fresh blood means a higher rate of healingreduced swelling, and faster recovery from injuries.

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Neuromuscular Re-education

Neuromuscular Electrical Nerve Stimulation (NMES) is the application of an electrical stimulus for muscle rehabilitation. During NMES, an electrical stimulus is passed from the device to an electrode placed on the skin over a targeted muscle or muscle group  mimicking the central nervous system causing the muscles to contract as they would naturally. The impulses are generated by a device such as a NMES unit and delivered through electrodes on the skin.  These electrodes are placed on the muscle that needs stimulation.
Physical therapy with NMES machines is effective in preventing muscle atrophy due to disuse of a muscle or muscle groups.  It is used primarily after musculoskeletal injuries such as damage to ligaments, tendons, joints, muscles, and bones.  Though they look similar, it differs from TENS units. Transcutaneous electrical nerve stimulation machines use an electric current for pain therapy rather than muscle stimulation. Patients with a wide range of orthopedic and neurologic diagnoses can benefit from the use of NMES. 

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Electrical Stimulation

Electrical stimulation uses an electrical current to cause a single
muscle or a group of muscles to contract. By placing electrodes on the skin in various locations the physical therapist can recruit the appropriate muscle fibers. Contracting the muscle via electrical stimulation helps strengthen the affected muscle. The physical therapist can change the current setting to allow for a forceful or gentle muscle contraction. Along with increasing muscle strength, the contraction of the muscle also promotes blood supply to the area that assists in healing.
Also Known As: E Stim

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Dexamethasone Iontophoresis  

 Iontophoresis is a technique of introducing ionic medicinal compounds (Dexamethasone) into the body through the skin by applying a local electric current. It is a safe, well-documented method of increasing penetration of molecules into surface tissues. Iontophoresis uses locally applied direct current to deliver medications across skin. Certain Therapeutic Dynamics Modalitiesscientific principles describe iontophoresis as a way to passively diffuse medication into the skin. The basic principle used is that electrical energy assists the movement of ions across the stratum corneum according to the basic electrical principle “like charges repel each other and opposite charges attract each other”.

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Lumbar/Cervical Traction

Therapeutic Dynamics Modalities

Mechanical spinal traction is the use of mechanical devices that exert a pulling force through a rope and various halters and straps. The tractive force results in a longitudinal separation and gliding apart of cervical (neck) or lumbar (back) spinal segments
The main purpose of mechanical traction is to reduce symptoms of cervical (neck) or lumbar (back) spinal compression. This is accomplished by allowing increased space for spinal nerves, elongating muscle tissue, decreasing sensitivity and muscle guarding, decreasing intradiscal pressure and increasing blood supply to the disc. Decreasing the pressure of the disc may help retract the disc bulges.
Mechanical spinal traction may be appropriate as part of a treatment plan for spinal nerve impingement (also known as “pinched nerve”) due to the following problems: Degenerative Disc Diseases,  Spinal Stenosis,Generalized Hypomobility and Muscle Spasm. 
Mechanical spinal traction may help you if you are experiencing numbness, tingling, pain in your upper/lower extremities or neck/back pain and muscle spasms. If you are experiencing these symptoms consult your doctor for a physical therapy evaluation to see if spinal mechanical traction is right for you.

To learn more Therapeutic Dynamics Modalities please Click Here

See What Our Clients Are Saying…

Irma CendejasIrma Cendejas
20:02 20 Nov 24
Excellent service and good work, very professional, I recommend them. 👍🤗
Agnes HsiehAgnes Hsieh
00:15 19 Oct 24
Jon and Jazmin are some of the kindest folks you'll meet, in a time when human relationships often seem so transactional. Jon is incredibly knowledgable, skillful, compassionate and truly wants to help. I'm a very curious person and Jon has never failed to patiently explain and answer each question I have about my conditions and offer PT exercises to improve. I am currently still in treatment and feel more hopeful about my healing than I did sessions ago when I first walked into his clinic. Sadie, his therapy dog, helps to make this space warm and inviting. I love her gentle, respectful and playful demeanor.Jazmin deserves recognition too, she handles everything with such grace and patience I am always in awe of how much she accomplishes every day from managing office duties to cleaning and setup for patients. She is inclusive which I appreciate so much. She is kind and courteous, never without a smile.Thank you both for treating me with kindness! I am so happy to have found this clinic through others who have left reviews on Google, and also wanted to pay it forward. I highly recommend Jon's clinic for your healing needs!
queenfratos wqueenfratos w
15:30 26 Sep 24
Love this place, john and jasmine are so caring and take their time with each patient. Made a lot of progress here with my knee pain after only a a few sessions. Great service!!
Mike WuMike Wu
14:58 20 Sep 24
Dr Preston is wonderful! Super knowledgeable and patient with my dad, who has never had a physical therapy session. Would recommend to anyone seeking rehab.
TonyaTonya
16:09 29 Aug 24
“I had an excellent experience with Dr. Preston at Therapeutic Dynamics Physical Therapy. From the moment I walked in, I knew I was in good hands. Dr. Preston did a wonderful job addressing my pain, and I can honestly say I feel better leaving than I did coming in. His expertise, care, and attention to detail made all the difference. If you’re dealing with pain and need relief, Dr. Preston is the one you must go to. Highly recommend!”
Daphne ChirinoDaphne Chirino
14:16 29 Aug 24
The facilities are good, the equipment is in good condition, everything is clean and tidy, John is great, I love his therapies, he listens to your concerns, he is empathetic to your symptoms, I recommend him 100% and last but not least , Jasmin... she is a great assistant, very sweet, helps with everything and is very kind. By the way, you'll feel in love with Sairi (the dog)The facilities are good, the equipment is in good condition, everything is clean and tidy, John is from beyond, I love his therapies, he listens to your issues, he is empathetic with your symptoms, I recommend him 100% and last but not least Important Jasmin, she is a great assistant, very sweet, helps with everything and is very kind. By the way, you will fall in love with the dog they have. Her name is Sairi.
M SimM Sim
16:19 27 Aug 24
This is an excellent facility and we highly recommend it!
carol caincarol cain
23:11 07 Aug 24
Best PT experience by far I have ever experienced. Not a huge facility where you are placed in a room with a bunch of others while timers go off all around you. No this is personalized care. I didnt know if my foot would ever get better from plantar fasciitis and bone spur but within three weeks I’m so much better it is amazing. Thank you Jon and Jasmine for your help.
Kerry ArmstrongKerry Armstrong
12:51 24 Jul 24
Excellent treatment. Very helpful and thoughtful.
Kamy SimianKamy Simian
22:44 23 Jul 24
We are always pleased with the service provided and everyone is extremely knowledgeable. Highly recommended!
Jason PikeJason Pike
17:54 05 May 24
Very impressive office. The therapist is a nice older man who was very thorough in his examination. I would highly recommend.
Caroline DikiboCaroline Dikibo
13:57 02 May 24
Great care!
Mayra ValienteMayra Valiente
14:27 18 Mar 24
This clinic has very good service, the receptionist is very friendly, helpful and gives you a lot of confidence, it is spectacular service and Dr John is very professional in his work and makes you feel very good. I recommend this clinic. Thank you Jasmine, blessings
leonardo cruzleonardo cruz
16:21 06 Mar 24
This is a fantastic place, both Dr Jon and Jazmín are committed to your recovery with professionalism and respect. I totally recommend it and additionally if you need to be spoken to in Spanish this will be your place of therapy.
They are very professional! Excellent care, it is pleasant to be there, you feel a calm and relaxing atmosphere and the best thing is that my pain improves every day. Jon and Jasmin make the best team! They also serve in Spanish.
Ginna CardenasGinna Cardenas
16:03 14 Feb 24
I called so many places to find the best place for my mom and the moment they took my phone I knew I wanted to take my mom there. Everyone is the office is extremely professional and kind. They take the time to listen to you and target your needs. They always answer your calls and work with your schedule. I am extremely glad I found this great place!
Maria VelezMaria Velez
14:41 19 Jan 24
First visit today and great first impression. John is very professional and knowledgeable.The place is very clean and the front desk person is very nice.I will definitely keep coming here.Highly recommend.
t kellert keller
16:16 16 Nov 23
I was referred here by my podiatrist, and while this is my first experience with physical therapy, I'm glad Therapeutic Dynamics (Jon Preston) is where I am spending my 4-6 weeks for treatment of my foot tendonitis. There is never a wait when I arrive, and Jasmine, Jon's assistant, is always friendly and prompt getting my therapy session set-up and started. I enjoy the variety of therapeutic activities and the soft-tissue foot treatment (ultrasound, the patch, and massage). Honestly, my foot massage at the end is better than going to a spa!While my foot isn't completely healed yet (I'm in my third week), I am already feeling a definite improvement, and I look forward to returning to my normal work and walking routines without pain in my foot. I think Therapeutic Dynamics is the place to get me there!
Quanita RobertsQuanita Roberts
14:18 17 Oct 23
Mike BennefieldMike Bennefield
02:59 29 Sep 23
Have been very pleased with the quality of care I have received at Therapeutic Dynamics. Jon and Jasmine have been been attentive and professional in all of my interactions with them. Jon has been very helpful in developing exercises to address my shoulder issues. His therapeutic massages have helped in relieving my pain and improving my range of motion. Would highly recommend.
Rencia GravesandeRencia Gravesande
21:38 08 Feb 23
Jon, Jazmine, and Sadie (sweet pooch pictured) are such a warm and inviting team! It is a wonderful place to get any physical therapy service! I’m currently seeing them and have always felt comfortable during my sessions. See Therapeutic Dynamics for your needs!
Kenda GilbertKenda Gilbert
20:23 31 Aug 21
What a great place to do therapy!! They are so compassionate about helping others here! They spend one on one time with you and explore ways to help you feel better!! I have been to lots of therapy places but this one is by far one of the BEST!! Please consider trying this place out of you are in need of therapy!!
Susan SSusan S
19:42 31 Aug 21
Jon is wonderful as a therapist. He takes the time to listen and then provides care accordingly. He gives one on one care which is very important to getting better. I walked in after surgery with pain and left after 3 months basically pain free. Jasmine at front desk is also very helpful. I would recommend this place without any hesitation.
LlamaCorn 100LlamaCorn 100
14:27 10 Aug 21
I am really impressed by John and his office. They are so professional and kind. John has improved my strength and stability in just a few sessions. I always receive his undivided attention. He cares and offers words of encouragement. I highly recommend Therapeutic Dynamics.
Bren SextonBren Sexton
03:51 21 May 21
I was told by my surgeon that John was the best therapist to help me rehab my shoulder after my replacement surgery. Jasmin was very friendly when she set up my appointments and she welcomes me every visit. She also helps me get started on my routines. John has done a fantastic job of getting my shoulder working again, way ahead of the surgeons expectations. His selections of exercises and therapy has been perfect. He is very personable and knowledgeable! I would highly recommend this team to anyone needing therapy!!
Amanda MarieAmanda Marie
18:53 29 Apr 21
I just finished up treatment for my shoulder, and I am so thankful this is where I ended up! Some of the traditional exercises ended up irritating my pain, and my plan was changed immediately to something that worked better for me! I have an extremely active job, and I am back to being able to work pain free. Aside from there always being a welcoming, friendly environment, they also just renovated the space and it’s clean (everything is disinfected as soon as you’re done using it) and beautiful! Highly recommend, you will not be disappointed!
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