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Comput Methods Programs Biomed 2022 Jun 14;220:106810. Epub 2022 Apr 14.

School of Biological Science and Medical Engineering, Beihang University, Beijing, China; Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, China. Electronic address:

Background And Objective: The sacroiliac joint screw is a common fixation method for pelvic posterior ring fractures. The complex anatomical structure around the pelvis makes it impossible to find a suitable fixed path, which increases the difficulty of surgical operation. In this paper, we propose an automatic planning algorithm based on a computer-aided internal arc fixation channel for pelvic fractures for the first time. Read More

J Phys Ther Sci 2022 Apr 8;34(4):327-334. Epub 2022 Apr 8.

Division of Sports Medicine, Department of Orthopedics, Boston Children's Hospital: 319 Longwood Ave, Ste 6, Boston, MA 02115, USA.

[Purpose] To identify running gait biomechanics associated with sacroiliac (SI) joint pain in female runners compared to healthy controls. [Participants and Methods] In this case-control study, treadmill running gait biomechanics of female runners diagnosed SI joint pain, (by ultrasound-guided diagnostic SI joint injection and/or ≥2 positive SI physical exam maneuvers) were compared with age, height, mass, and BMI matched healthy female runners. Sagittal and coronal plane treadmill running video angles were measured and compared. Read More

Global Spine J 2022 Apr;12(2_suppl):45S-52S

Department of Orthopaedic Surgery, UC San Francisco, CA, USA.

Study Design: Narrative Summary Review for

Objective: To discuss the challenges and complications of S2-Alar-Iliac (S2AI) spinopelvic fixation using freehand techniques, and to introduce the utility of navigation & robotics to enhance patient safety.

Methods: This study involved search of literature using the PubMed database, including retrospective clinical studies, anatomic reports, and surgical reports. The intention was to find literature that discussed complications regarding screw malfunction from manual S2AI placement, anatomical complexity of the sacroiliac joint, and outcomes of S2AI procedures conducted with robotic guidance systems. Read More

J Vet Sci 2022 Mar;23(2):e38

Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea.

Background: Minimally invasive surgery (MIS) technique of sacroiliac luxation in toy breed dogs using cannulated screws has not been described.

Objectives: The purpose of this study was to evaluate the effectiveness of pelvic canal recovery, the reproducibility of successful surgery outcomes, and the acceptable difficulty of the procedure in MIS of sacroiliac luxation in toy breed dogs.

Methods: MIS using 2. Read More

Ann Ital Chir 2022 ;92:102-107

Background: The injury mechanism of a pelvic fracture is primarily high-energy injury, and it is easily combined with injuries to other tissues and organs. This study aimed to investigate the clinical effectiveness of early diagnosis and treatment of pelvic fractures and associated injuries in children.

Methods: The diagnosis and treatment of 60 children with pelvic fractures and associated injuries who were admitted to our hospital from January 2005 to December 2016 were retrospectively analyzed. Read More

Oper Orthop Traumatol 2022 Apr 17;34(2):153-171. Epub 2022 Mar 17.

Klinik für Orthopädie und Unfallchirurgie, Westpfalz Klinik Kaiserslautern, Hellmut-Hartert-Strasse 1, 67655, Kaiserslautern, Deutschland.

Objective: Stabilization of fragility fractures of the pelvis (FFP) using a minimally invasive technique. Insertion of a transsacral rod into the transsacral corridor of S1. Insertion of a retrograde transpubic screw through the superior branch of the pubic bone. Read More

Clin Spine Surg 2022 Apr;35(3):E363-E367

Department of Orthopaedic Surgery, Western Michigan University School of Medicine, Kalamazoo, MI.

Study Design: This was a level III-retrospective cohort study.

Objective: The objective of this study was to present an unbiased report of the current rate of severe complications for Federal Drug Administration (FDA) 510(k) cleared sacroiliac joint (SIJ) fusions and investigate the underlying cause of these complications.

Summary Of Background Data: The number of yearly SIJ fusions is on an upward trend. Read More

Zhonghua Shao Shang Za Zhi 2022 Feb;38(2):165-169

Department of Burns and Plastic Surgery, the Affiliated Hospital of Zunyi Medical University, Zunyi 563003, China.

To explore the clinical application value of two longitudes three transverses method in the location of the perforator of thoracodorsal artery perforator and deep wound repair. The retrospectively observational study was conducted. From December 2018 to June 2020, 17 patients with deep wounds who were admitted to the Affiliated Hospital of Zunyi Medical University met the inclusion criteria and were included in this study, including 7 males and 10 females, aged 12 to 72 years. Read More

Injury 2022 Jun 5;53(6):2121-2125. Epub 2022 Feb 5.

University of Washington Department of Orthopaedics & Sports Medicine, Seattle, WA, United States. Electronic address:

Background: Injuries to the posterior pelvic ring are often stabilized with fixation across the sacroiliac joint (SIJ). However, the compensatory changes at the neighboring L5/S1 facet joint are unknown. The objective of this study was to determine the compensatory change in pelvic kinematics and contact forces at the L5/S1 facet joint after fixation across the sacroiliac joint (SIJ) using a cadaveric model. Read More

Orthop Traumatol Surg Res 2022 04 22;108(2):103210. Epub 2022 Jan 22.

Department of Orthopedics, Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital Central South University, 87 Xiangya Road, Changsha, Hunan, 410007, P.R. China. Electronic address:

Introduction: Posterior pelvic ring disruption includes sacral fractures, sacroiliac joint fracture dislocations and ilium fractures. Percutaneous iliosacral screw fixation of sacral fractures and sacraoiliac joint fracture dislocations have been prevailing, it has the advantages of minimal invasiveness, less blood loss and low wound infection rate.

Hypothesis: This study was to evaluate the application of three-dimensional (3D) printed patient-specific guide template in closed reduction and iliosacral screw fixation of posterior pelvic ring disruption. Read More

Orthop Traumatol Surg Res 2022 04 17;108(2):103203. Epub 2022 Jan 17.

Service de chirurgie orthopédique et traumatologique, institut régional du Rachis, CHU de Rouen, 1, rue de Germont, 76000 Rouen, France.

Introduction: Posterior hinge fixation (PHF) is a sacroiliac joint fixation method indicated for the surgical treatment of unstable pelvic ring fractures (tile C).

Hypothesis: PHF yields good functional outcomes based on the Majeed score at more than 1 year of follow-up.

Methods: A single-center, retrospective study of patients who had a Tile C pelvic ring fracture, who were operated by PHF and who were evaluated at a minimum follow-up of 1 year. Read More

Eur J Trauma Emerg Surg 2022 Jan 13. Epub 2022 Jan 13.

Advanced Critical Care Center, Gifu University Hospital, 1-1 Yanagido, Gifu-shi, Gifu, 501-1194, Japan.

Purpose: Currently, sacroiliac joint dislocations, including crescent fracture-dislocations, are treated using several techniques that have certain issues. We present the technical details and clinical outcomes of a new technique, anterior sacroiliac stabilisation (ASIS), performed using spinal instrumentation.

Methods: ASIS is performed with the patient in a supine position via the ilioinguinal approach. Read More

Cureus 2021 Nov 13;13(11):e19532. Epub 2021 Nov 13.

Orthopedic Surgery, Baylor Scott & White Medical Center, Temple, USA.

Sacroiliac (SI) joint dysfunction is a significant contributor to low back pain. Percutaneous SI joint fusion is a minimally invasive procedure that can provide excellent pain relief for patients, but it is not without complications, especially in patients with abnormal lumbosacral anatomy. We report the case of a 71-year-old man with sacral dysmorphism who had a painful SI joint that was refractory to conservative therapy. Read More

Injury 2022 Feb 3;53(2):339-345. Epub 2021 Dec 3.

Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria.

Purpose: Implant failure rates remain high after plate fixation in pelvic ring injuries. The aim of this study was to compare an alternative fixation technique with suture-button devices and anterior plate fixation in partially stable open-book injuries.

Material And Methods: We acquired 16 human fresh frozen anatomic pelvic specimens. Read More

Contrast Media Mol Imaging 2021 22;2021:5863530. Epub 2021 Nov 22.

Department of PET/CT, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, 250117 Jinan, Shandong, China.

Objective: With the increasing application of radiotherapy for cervical cancer, the incidence of sacral insufficiency fracture (SIF) is increasing gradually. Incorrect or untimely treatment caused by misdiagnosis may lead to serious adverse clinical consequences. This study retrospectively analyzed SIF caused by radiotherapy regarding the appearance and dynamic changes in 2-[fluorine-18]-fluoro-2-deoxy-D-glucose (18F-FDG) positive emission tomography (PET)/computed tomography (CT) images to improve the understanding of SIF. Read More

Vet Radiol Ultrasound 2022 Mar 5;63(2):148-155. Epub 2021 Dec 5.

Department of Small Animal Clinical Sciences, University of Tennessee, Knoxville, Tennessee, USA.

Canine sacroiliac (SI) joint subluxation or luxation is most commonly diagnosed based on qualitative radiographic assessments. Aims of this two-part, retrospective, diagnostic accuracy, pilot study were to develop and evaluate a novel quantitative method based on measuring the angle between a line connecting the iliac wings and parallel lines across three anatomical landmarks (cranial endplate of L7, caudal endplate of L6, cranial endplate of L6) on a single ventrodorsal radiograph. For the first part of the study, angle measurements from a single observer were compared for 20 normal canine pelvic radiographs and 20 pelvic radiographs with SI luxation or subluxation. Read More

Vet Comp Orthop Traumatol 2022 Mar 30;35(2):119-127. Epub 2021 Nov 30.

Faculty of Science, Sydney School of Veterinary Science, University of Sydney, Sydney, Australia.

Objectives:  The aim of this study was to report the use of computed tomography (CT) for postoperative evaluation of the accuracy of sacroiliac reduction and minimally invasive screw fixation in a series of five cats.

Methods:  Medical records between January 2016 and March 2017 of cats presenting to the author's institution were reviewed. Included were cats that had undergone minimally invasive sacroiliac screw fixation with a complete medical record and pre- and postoperative radiographs. Read More

Acta Orthop Belg 2021 Sep;87(3):411-418

Unstable pelvic injuries are considered uncommon and they are usually associated with high rate of morbidity and mortality. High energy blunt trauma and falling from height are usually the main mechanism of injury. It is a retrospective study that was performed in academic level I trauma center. Read More

J Orthop Case Rep 2021 Jul;11(7):53-56

Department of Orthopaedics, The Calcutta Medical Research Institute (CMRI), Kolkata, West Bengal, India.

Introduction: Overlapping pubic symphysis dislocation (OPSD) or a locked pubic symphysis is a compression of the pelvic ring with the intact pubis trapped into the contralateral obturator foramen. Reduction can be difficult and contralateral suprapubic osteotomy is a good way to address the irreducible OPSD. The technique has only been discussed thrice in the available literature. Read More

Clin Anat 2022 Apr 19;35(3):280-287. Epub 2021 Nov 19.

Rainbow Babies and Children's Hospital at Case Western Reserve University, Cleveland, Ohio, USA.

Percutaneous iliosacral screw fixation and transsacral fixation are challenging procedures requiring extensive knowledge of sacral anatomy to avoid damaging nearby neurovascular structures. Greater knowledge of anatomical screw trajectory and size allowances would be helpful to guide surgical placement. An anatomical study of 40 cadaveric sacra in specimens ages 18-65 was performed. Read More

Int Orthop 2022 03 16;46(3):541-548. Epub 2021 Oct 16.

Department of Traumatology, Orthopedics and Disaster Surgery, Sechenov University, Moscow, Russia.

Introduction: Degenerative changes in the hip joint as indications for operative treatment are observed in more than a third of the population over the age 50. In most cases, the development of a degenerative process in the hip joint is accompanied by changes in the sacroiliac joint. To improve the quality of life, relieve pain, and improve the clinical outcomes of rehabilitation after total hip arthroplasty (THA), an integrated approach should be chosen. Read More

Vet Surg 2022 Jan 25;51(1):182-190. Epub 2021 Sep 25.

Laboratory for 3D Printing and Regenerative Medicine, Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana, USA.

Objective: To improve the accuracy of drilling during the repair of sacroiliac luxations (SILs) with a 3D-printed patient-specific drill guide (3D-GDT) compared to free-hand drilling technique (FHDT).

Study Design: Blinded, randomized, prospective ex vivo study.

Sample Population: Sixteen canine cadavers (20-25 kg). Read More

BMJ Case Rep 2021 Sep 6;14(9). Epub 2021 Sep 6.

National Pelvic and Acetabular Unit, Tallaght University Hospital, Dublin, Ireland.

Oper Orthop Traumatol 2021 Dec 1;33(6):538-545. Epub 2021 Sep 1.

Klinik und Poliklinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Deutschland.

Objective: Rapid mobilization with full weight bearing by minimally invasive fixation of Os ilium to L5 in fractures of the sacrum and disruption of the sacroiliac joint (SIJ).

Indications: Unstable injuries of the posterior pelvic ring in fractures of the sacrum and disruption of the SIJ.

Contraindications: Fracture of ilium and not injury related implants in the screw trajectory, neurological deficits regarding the fracture, decubitus in the area of surgical approach. Read More

BMC Musculoskelet Disord 2021 Aug 21;22(1):717. Epub 2021 Aug 21.

Royal Adelaide Hospital, Port Road, Adelaide, SA, 5000, Australia.

Background: The incidence of osteoporotic pelvic fractures in elderly patient is rising. This brings an increasing burden on health and social care systems as these injuries often lead to prolonged hospital admissions, loss of independence, morbidity and mortality. Some centres now advocate stabilisation of these injuries to reduce pain, facilitate early mobilisation, decrease hospital stay and restore independence. Read More

Int J Burns Trauma 2021 15;11(3):260-266. Epub 2021 Jun 15.

Department of Orthopaedic Surgery, Postgraduate Institute of Medical Education and Research Chandigarh 160012, India.

Background: Crescent fractures are a subset of lateral compression injuries associated with high energy trauma and are rotationally unstable. These fractures are rare bilaterally, and we present one such rare case of a bilateral crescent fracture.

Case Description: A 56-year-old male presented with run-over injury and was diagnosed with bilateral crescent fracture-dislocation of the Sacroiliac joint. Read More

World Neurosurg 2021 10 15;154. Epub 2021 Jul 15.

Department of Neurosurgery, University of Minnesota, Minneapolis, Minnesota, USA; Department of Orthopedic Surgery, University of Minnesota, Minneapolis, Minnesota, USA.

Pelvic fixation is becoming an increasingly important caudal anchor point for long lumbar constructs, high-grade spondylolisthesis, fixation of sacral fractures, and support for 3-column osteotomies, by adding lumbosacral fixation anterior to the McCord pivot point. Iliac bolts were once common but have become less favorable due to screw head irritation and complications associated with connecting rods. S2-alar-iliac (S2AI) screws have been shown to achieve equivalent anchoring strength of constructs to the pelvis, while being lower profile and in line with the lumbar instrumentation. Read More

Front Oncol 2021 25;11:640933. Epub 2021 Jun 25.

Department of Orthopedics, Shanghai General Hospital, Shanghai, China.

Objective: This study intends to retrospectively analyze the data of patients with sacral metastases in our center, and analyze the treatment methods and therapeutic effects of sacral metastases.

Methods: 73 patients with sacral metastases treated in our hospital from June 2013 to June 2019 were retrospectively analyzed. There were 54 cases of neurological symptoms, 42 cases of sacroiliac joint instability, 24 cases of lower limb muscle weakness and 19 cases of abnormal urination and defecation. Read More

Arthroscopy 2021 07;37(7):2391-2392

Marina del Rey, California.

Pubalgia means pubic pain. This is different from core muscle injury (implying muscular pathology) or inguinal disruption (different anatomic region). Athletic pubalgia includes a myriad of pathologic conditions involving the pubic symphysis, adductors, rectus abdominis, posterior inguinal wall, and/or related nerves. Read More

J Orthop Res 2022 05 9;40(5):1223-1235. Epub 2021 Jul 9.

Traditional Chinese Medical Orthopedics Department, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.

The biomechanical mechanism of sacroiliac joint pain caused by sacroiliac joint subluxation is still unclear. And the purpose of this study is to elucidate the mechanism. In the present study, a finite element model of female lumbar spine-pelvis-femur was established. Read More