The　goal　was　to　evaluate　the　clinical　outcomes,　quality　of　reduction　and　complications　of　pelvic　fractures　treated　by　minimally　invasive　stabilisation　of　posterior　pelvic　ring　instabilities　with　pedicle　screws　connected　to　a　transverse　rod.　Retrospective　analysis　of　prospectively　collected　data　in　a　consecutive　patient　series　with　pelvic　fractures　treated　by　minimally　invasive　stabilisation　of　posterior　pelvic　ring　instabilities　with　pedicle　screws　between　January　2010　and　January　2016.　The　functional　outcomes　evaluated　by　Majeed　scores,　and　fracture　reduction　results　were　evaluated　using　the　Tornetta　and　Matta　standard.　As　well　as　recording　the　duration　of　the　surgical　procedure,　intraoperative　blood　loss,　the　times　of　intra-operative　fluoroscopy　and　complications.　A　total　of　29　patients　(15　men　and　14　women;　age　range,　21-72　years;　mean,　40.8　years)　could　be　followed-up　after　an　average　of　38.2　+/-　21.3　months　(range,　12-84　months).　According　to　the　AO/OTA　classification,　there　were　24　patients　with　B2　injury　and　five　patients　with　C1　injury　of　the　pelvic　ring.　For　the　sacral　fractures,　according　to　Denis　classification,　four　cases　were　zone　I　fractures　and　25　cases　were　zone　II　fractures.　The　duration　of　the　surgical　procedure,　intra-operative　blood　loss　and　the　times　of　intra-operative　fluoroscopic　of　the　posterior-ring　surgical　procedure　was　28.2　+/-　4.6　minutes　(range,　20-38　minutes),　46.7　+/-　4.9　ml　(range,　39-56　ml),　and　13.1　+/-　1.6　seconds　(range,　10-17　seconds)　respectively.　Posterior-ring　fracture　reduction　was　excellent　in　11　patients　and　15　were　good,　three　cases　were　fair;　the　excellent　and　good　rate　was　89.7%　(26/29).　At　the　final　follow-up,　the　function　result　was　rated　as　excellent　in　ten　cases,　good　in　16,　fair　in　three,　and　poor　in　zero　cases;　the　excellent　and　good　rate　was　89.7%　(26/29).　There　was　no　incision　infection,　intra-operative　neurovascular　injury,　pedicle　screw　loose　or　breakage,　and　non-union　of　the　posterior　arch　did　not　occur.　Two　patients　requested　removal　of　the　fixator:　one　patient　with　breakage　of　the　anterior　pelvic　ring　internal　fixator,　and　the　pedicle　screw　was　also　taken　out　in　the　same　operative　session;　another　one　with　moderate　pain　on　the　posterior　pelvic　ring.　Minimally　invasive　stabilisation　of　posterior-pelvic-ring　instabilities　with　pedicle　screw　connected　to　a　transverse　rod　may　be　a　good　alternative　to　sacroiliac　screw　fixation　because　it　is　quick,　safe　and　associated　with　a　good　functional　outcome;　thus　being　a　useful　option　in　patients　who　do　not　qualify　for　sacroiliac　screw　fixation.