There are multiple definitions:

1. static sciatic index(English)

2. supersonic shear imaging(English)

   • Mach cone

3. small scale integration(English)

   • MSI

4. Social Services Inspectorate(English)

5. surgical site infection(English)

   • leads to adverse patient outcomes, including prolonged hospitalization and death
   • ACH, ACV, CFU, IPC, IPCT, IPCTM, MIS, NFGNB, NIPPV, PJA, UDAF, AWRG, Cedar, EHS, PRO, QOL, TAM, TAR, VHR
   • Surgery, Microbiology, Infection, Wound care, Preventive medicine
   • https://doi.org…0974-2727.59701
   • https://doi.org…pip.2021.100180
   • https://doi.org…598-022-22062-x
   • https://doi.org…idc.2010.11.004

6. systolic stretch index(English)

   • IVMD, LBBB, LSPD, SF, SRS, CRT
   • Cardiology, Electrophysiology
   • https://doi.org…cmg.2021.02.019
   • https://doi.org…3/ehjci/jeab264

7. Supplemental Security Income(English)

   • support program for children with a disability
   • DI
   • Disability, Pediatrics, Financial issues
   • https://pubmed.…h.gov/16878426/

8. subspine impingement(English)

   • FAIS, MCID, PRO, RTS, HOS
   • Sports medicine, Orthopedics
   • https://doi.org…635465221085664

9. shoulder strength index(English)

   • may refer to arthroscopic single-row versus double-row technique for repairing rotator cuff tears
   • ASES, UCLA, RC
   • Shoulder and other joints, Surgery, Injury
   • https://doi.org/10.1111/os.12139
   • https://doi.org…jos.2016.07.001