Chikista can be classified as Anta-Parimarjana, Bahi-Parimarjana and Shastra- Pranidhana on the basis of route administration. Kati-Basti may be included under Bahir-Parimarjana Chikitsa. Procedure of Kati Basti. The procedure of Kati Basti can be performed in the following three stages:

This includes preparatory measures like preparation of patient, preparation of medicine and collection of materials required for the smooth execution of the procedure. It can be conducted under following considerations.

The patient is examined in relation to DashavidhaPariksha and by applying Pratyaksha, Anumana and Aptopadeshasiddhantas to assess Vyadhi, Bala and Deha, Bala. Then, Lumbar region is examined properly and the region of maximum tenderness is noted. It is also examined for scars & wounds.

It includes a metal ring, Masha Pishti, AushadhaDravya (Nirgundi Taila-250ml), spoon, bowl, vessel, water, gas stove and table.

Patient is made to lie down comfortably on the table in prone position having confirmed that he has passed the stool and urine properly. Then the patient is asked to drape the clothes so that lumbosacral area could be exposed properly.

First, Masha pishti is prepared by adding sufficient quantity of water to the flour of Black gram. Then, with the use of metal ring and Masha pisti a pit of about two inches height and four inches diameter is made around the lumbosacral area. The concavity of pit (Basti Yantra) should be well sealed to prevent the leakage of the medicine retained in the cavity.

The bowl containing medicine is heated indirectly by keeping over hot water. Then, the gently heated Luke warm BrihatPanchamool Tailis poured slowly and carefully on the Kati Pradesh along the side of the Basti-Yantra. The heat of the medicine should be sufficient enough to be tolerated by the patient. The level of the medicine should be two Angula above the highest point inside the cavity.

(40-420C) The medicine in the pit is replaced with heated medicine every 5 minutes so that a constant temperature is maintained throughout the procedure.

After the specified time, i.e. 30 minutes, the BrihatPanchamool Tail is removed from the Basti Yantra and then the Basti Yantra is removed.

The SamyakLakshanas of Kati Basti are not described in our classics. Even though Kati Basti is a modification of Shiro Basti, those SamyakLakshanas cannot be interpreted for Kati Basti. Therefore, the Ayoga, Atiyoga and Samyakyogabahya

To remove the oil, a spoon can be used and the oil can be collected in a separate vessel. Then the paste is detached from the body. In a relax position the patient is then allowed to take rest i.e. patients is instructed to lie down in supine position without having any contact with external environment. The table should have either thin bedding or uniform plain and wooden.

In Gridhrasi there are two main reasons by which Vata gets vitiated. They are Dhatukshaya and Margavarodha. [9] Because of the Samprapti Vishesh, the same Nidanas produce different Vatavyadhies. This is because the presentation of the disease changes according to the Sthana where Dosha-DushyaSammurchhana takes place [10] Khavaigunya plays an important role in the disease process. In Gridhrasi, exposure to mild but continuous Trauma to Kati, Sphik region because of improper posture, travelling in jerky vehicles, carrying heavy loads, digging etc. or sometimes spinal cord injury, improperly treated pelvic diseases are responsible for producing

Sthanavaigunya at Kati, Sphik, Prishta etc. They may not be able to produce the disease at the instance, but after acquiring some Vyanjakahetu (exciting cause), the disease may be produced. Here, the Samprapti takes place either by Apatarpana or Santarpana or Agantuja. Sciatica is a condition described in modern medicine resembles with Gridhrasi. In sciatica, there is pain in distribution of sciatic nerve which begins in the lower back and radiates through the posterior aspect of the thigh and calf and to the outer boarder of foot. Herniation and degenerative changes in the disc are the most common causes. There is often history of trauma as twisting of the spine, lifting heavy objects or exposure to cold. The disability caused by this disease hampers day to day activity of the patients and makes the patients crippled. Modern medical treatment has its own limitation in managing this type of disease. It can provide either conservative or surgical treatment and is highly symptomatic and with troublesome side effects, whereas such type of conditions can be better treated by the management and procedures mentioned in Ayurvedic classics. Kati Basti helps to cure disorders of Spinal Cord and other areas involved in Gridhrasi, in which aggravation of Vata may be considered as chief culprit, there by releasing nerve compression and related symptoms.

Gridhrasi due to its clinical manifestation, pathogenesis andcomplication can be positively correlated with Sciatica.Kati Basti withBrihatPanchamool Tail which is classically mentioned can beused in both the type of Gridhrasi in general. Kati Basti drugs is absorbed through skin and produce an action according to the properties of drug.Result of the study revealed that BrihatPanchamool TailKatibasti effective in reducing the Ruka (Pain), Toda (Pricking Sensation), Stambha (Stiffness), Spandana (Twitching), Scoliosis (Dehapravakrata) and improve the S.L.R. Test and Muscles power of affected leg.