Physical therapists (PTs) are experts in movement and function, which sounds like a pretty broad topic to be an expert in, and it is. After physical therapists graduate PT school (now-a-days at the doctoral level), they find their niche and specialize. You can find PTs working with high-level athletes, children, infants, people who are recovering from injuries, people with neurological conditions and many other types of clients.

^ Vesentini, Giovana; El Dib, Regina; Righesso, Leonardo Augusto Rachele; Piculo, Fernanda; Marini, Gabriela; Ferraz, Guilherme Augusto Rago; Calderon, Iracema de Mattos Paranhos; Barbosa, Angélica Mércia Pascon; Rudge, Marilza Vieira Cunha (2019). "Pelvic floor and abdominal muscle cocontraction in women with and without pelvic floor dysfunction: a systematic review and meta-analysis". Clinics. 74: e1319. doi:10.6061/clinics/2019/e1319. ISSN 1807-5932. PMC 6862713. PMID 31778432.

During the internal exam, your physical therapist will place a gloved finger into your vagina or rectum to assess the tone, strength, and irritability of your pelvic floor muscles and tissues. Internal exams and internal treatment are invaluable tools that are taught to pelvic floor physical therapists. It can tell us if there are trigger points (painful spots, with a referral pattern or local); muscle/tissue shortening; nerve irritation and/or bony malalignment that could be causing your pain directly or inhibiting the full function of your pelvic floor muscles. We can also determine if your pelvic floor has good coordination during the exam. A pelvic floor without good coordination, may not open and close appropriately for activities such as going to the bathroom, supporting our pelvis and trunk, sexual activity, and keeping us continent.

Nerves, organs, and joints can lose their natural mobility over time and cause a whole host of symptoms from pain, to loss of range of motion, and poor functioning of the bodily symptoms. Skilled and specialized therapists can use a variety of active techniques (patient assisted) and passive techniques to free up restrictions in these tissues and organs and improve overall function.

Strengthening weak pelvic floor muscles often helps a person gain better bowel and bladder control. A physical therapist can help you be sure you are doing a Kegel correctly and prescribe a home program to meet your individual needs. Diet modifications can also reduce urinary and fecal incontinence. Bladder re-training can decrease urinary frequency and help you regain control of your bladder.

There are various procedures used to address prolapse. Cystoceles are treated with a surgical procedure known as a Burch colposuspension, with the goal of suspending the prolapsed urethra so that the urethrovesical junction and proximal urethra are replaced in the pelvic cavity. Uteroceles are treated with hysterectomy and uterosacral suspension. With enteroceles, the prolapsed small bowel is elevated into the pelvis cavity and the rectovaginal fascia is reapproximated. Rectoceles, in which the anterior wall of the rectum protrudes into the posterior wall of the vagina, require posterior colporrhaphy.[6]
Although many centers are familiar with retraining techniques to improve pelvic floor dysfunction, few have the multidisciplinary expertise to teach patients with constipation how to appropriately coordinate abdominal and pelvic floor muscles during defecation, and how to use bowel management techniques, along with behavior modification, to relieve symptoms. Because pelvic floor dysfunction can be associated with psychological, sexual or physical abuse and other life stressors, psychological counseling is often included in the evaluation process.
Pelvic floor dysfunction may include any of a group of clinical conditions that includes urinary incontinence, fecal incontinence, pelvic organ prolapse, sensory and emptying abnormalities of the lower urinary tract, defecatory dysfunction, sexual dysfunction and several chronic pain syndromes, including vulvodynia in women and chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) in men. The three most common and definable conditions encountered clinically are urinary incontinence, anal incontinence and pelvic organ prolapse.
^ Bernard, Stéphanie; Ouellet, Marie-Pier; Moffet, Hélène; Roy, Jean-Sébastien; Dumoulin, Chantale (April 2016). "Effects of radiation therapy on the structure and function of the pelvic floor muscles of patients with cancer in the pelvic area: a systematic review". Journal of Cancer Survivorship. 10 (2): 351–362. doi:10.1007/s11764-015-0481-8. hdl:1866/16374. ISSN 1932-2259. PMID 26314412. S2CID 13563337.
One of the great benefits to skin rolling is it increases the circulation in the area to which it was applied. Often times, areas that are tight or restricted are receiving reduced blood flow and oxygen. By bringing blood flow to the area, toxins can be cleared and the healing contents of the blood are brought to the injured area. Skin rolling can also restore the mobility of surrounding joints and nerves, which can help to restore normal function. By allowing the skin to move more freely, pelvic congestion, heaviness and aching can be effectively treated.
^{Biofeedback is a modality that allows you to learn how to better control your muscles for optimal function. Biofeedback shows you what your muscles are doing in-real time. It is helpful to teach patients to lengthen and relax the pelvic floor for issues like general pelvic pain, painful sexual activity and constipation or to contract the pelvic floor in order to prevent leakage with activities like coughing, laughing, lifting, running or moving heavy objects. However, biofeedback does not demonstrate shortened muscles and tissues; therefore, in certain cases the biofeedback may seem to be within normal limits but yet the patient has 10/10 pain. In these incidences, manual palpation is more appropriate to identify restricted and shortened tissues and muscles, and myofascial trigger points.}
Obstructed Defecation: Obstructed defecation is difficulty getting bowel movements out of the body. Although the stool reaches the rectum, or bottom of the colon, the patient has difficulty emptying. This often makes patients feel that they need to go the bathroom more often, or that they cannot empty completely, as if stool remains in their rectum. Obstructed defecation may be caused by pelvic floor prolapse (discussed below), pain symptoms or muscles not functioning normally. 
Paradoxical Puborectalis Contraction: The puborectalis muscle is part of the control muscles that control bowel movements. The puborectalis wraps like a sling around the lower rectum.   During a bowel movement, the puborectalis is supposed to relax to allow the bowel movement to pass. If the muscle does not relax or contracts during paradoxical contraction, it may feel like you are pushing against a closed door.
Issues with the pelvic floor can arise from a multitude of reasons. Infections, previous surgeries, childbirth, postural and lifting problems, and trips and falls can all bring on pelvic floor dysfunction. Pelvic floor pain can persist well after the cause of it has been removed. So it is entirely possible to feel the effects of an old infection, surgery or injury, days to years after they occur. Anyone who has had long standing abdomino-pelvic pain, or pain that they can’t seem to get rid of after seeking the help of medical doctors or other healthcare providers is a good candidate for a pelvic floor physical therapy evaluation and possible curative treatment.