Sigma instrument-assisted chiropractic

The Sigma instrument is a computerised adjustment device used in the chiropractic department at Alimran Medical Center. Unlike conventional manual chiropractic — where the practitioner applies a rapid, high-velocity thrust by hand — the Sigma delivers precisely measured mechanical impulses through a handheld probe, and records the joint's response on a built-in computer display. This allows the therapist to monitor the biomechanical state of each segment during treatment, not just before and after.

**How it works**

The device transmits controlled shock waves to the musculoskeletal receptors at the target site. These impulses reset the mechanical behaviour of the joint, reduce muscle spasm, and stimulate the nerve pathways running through the treated region. The force applied is adjusted segment by segment based on the real-time biofeedback — the computer plots the stiffness and motion of the joint, and the therapist modifies technique accordingly.

**Clinical benefits**

- Reduction of muscle and joint pain - Treatment of muscle spasm and muscular fibrosis - Improvement of nerve receptor function - Increased muscle strength in the treated region - Increased range of joint movement

**Who it is suitable for**

The Sigma technique is suitable for patients who prefer a non-manual approach, those with joint hypersensitivity, post-operative patients returning to spinal rehabilitation, and children or elderly patients who cannot tolerate high-velocity manual manipulation. It is applied safely by a trained therapist and the treatment parameters are guided by the computerised output rather than by manual estimation.