Rami Fractures Research Articles

Contributions of Pubic Rami Fracture Morphology and Fixation to Pelvic Ring Stability in Type 1 Lateral Compression Injuries: A Biomechanical Cadaveric Study.

Treatment of lateral compression type 1 (LC-1) injuries has historically been nonoperative with immediate weight-bearing. However, management of these injuries remains controversial, with reports of displacement at follow-up for nonoperatively managed LC-1 fractures. The goal of our study was to determine the effect of superior pubic ramus fracture morphology and fixation construct on pelvic stability. Ten fresh-frozen cadaveric were transected into hemi-pelvises. Incomplete Denis type 1 sacral fractures were made. Hemi-pelvises were randomized to receive a transverse-type or oblique-type superior pubic ramus fracture with the contralateral hemi-pelvis receiving the opposing morphology. A lateral load to 135N was applied with an Instron materials testing machine and lateral displacement of the hemi-pelvis was recorded. Deflection and stiffness were calculated. Statistical analysis was conducted using a t test assuming unequal variances with an alpha = 0.05. Oblique-type superior pubic ramus fractures allowed more deflection compared with transverse-type fractures in the absence of fixation (P = 0.018). The posterior-only and combined anterior and posterior fixation configurations on average reduced deflection more than no fixation or anterior fixation only. In all fixation configuration cases, the average deflection for transverse-type fractures was less than that of the oblique-type fractures. Our findings suggest that displacement of LC-1 pelvic injuries may be related to pubic rami fracture morphology. When looking at initial injury imaging, oblique-type pubic rami fractures may suggest an increased potential for displacement over time. In such cases, we recommend an examination under anesthesia to evaluate for underlying instability and consideration for fixation. Therapeutic Level V.

Etiology, Clinical Presentation, and Outcome of Mandibular Fractures in Immature Dogs Treated with non-Invasive or Minimally Invasive Techniques.

This study was performed to report etiology, clinical presentation, and outcome of mandibular fractures in immature dogs treated with non-invasive or minimally invasive techniques. Immature dogs diagnosed with mandibular fractures from 2001 to 2016 were included in this study. Diagnosis of the mandibular fracture was achieved by oral examination and diagnostic imaging in the anesthetized dog. Twenty-nine immature dogs with 54 mandibular fractures were selected. Within the mandibular body, the regions of the developing permanent canine and first molar teeth were most commonly involved (46.4% and 35.0%, respectively). Within the mandibular ramus, 53.8% of the fractures were located in its ventral half, and 38.5% in the condylar process. Muzzling was applied in 72.4% of the dogs. All dogs had clinical healing with resolution of signs of pain and recovery of mandibular function. Mean time for clinical healing was 21 ± 9 days. Age of the dog and duration of muzzling were significantly associated with the time needed for clinical healing. In immature dogs, fractures of the mandibular body occur most commonly in the regions of the developing permanent canine and first molar teeth, while fractures of the mandibular ramus are most commonly found in its ventral half and the condylar process. Non-invasive or minimally invasive management of mandibular fractures in immature dogs carries a good prognosis regarding clinical healing and recovery of mandibular function. Dogs should be monitored for the development of dental abnormalities and/or skeletal malocclusion until permanent teeth have erupted and jaw growth is completed.

Nonoperative Treatment of Select Lateral Compression Type II Pelvic Ring Injuries (OTA/AO 61B2.2) Results in a Low Rate of Radiographic Displacement.

To quantify radiographic outcomes and to identify predictors of late displacement in the nonoperative treatment of lateral compression type II (LC-2) pelvic ring injuries. Retrospective review. Two Level 1 trauma centers. Thirty eight patients 18 years of age or older with LC-2 pelvic ring injuries were included in the study. Nonoperative treatment. Crescent fracture displacement (CFD) was measured on initial axial computed tomography scan. Change in pelvic ring alignment was measured by the deformity index, simple ratio, and inlet and outlet ratios on successive plain radiographs. Patients in this study had minimally displaced LC-2 pelvic ring injuries, with median initial CFD of 2 mm and median initial deformity index of 2%. No patients had a change of more than or equal to 10 percentage points in deformity index over the treatment period, but small amounts of displacement were seen on the other ratios. No patients initially selected for nonoperative treatment converted to operative treatment. No radiographic predictors of late displacement were identified. Bilateral pubic rami fractures and the presence of a complete sacral fracture ipsilateral to the crescent fracture were not associated with late displacement. A spectrum of injury severity and stability exists in the LC-2 pattern. Nonoperative treatment of LC-2 injuries with low initial deformity and CFD results in minimal subsequent displacement. Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

The pectineal ligament is a secondary stabilizer in anterior pelvic ring fractures - a biomechanical study

BackgroundThere is ongoing discussion whether operative fixation of partially stable lateral compression fractures of the pelvis is beneficial for the patient. Recent studies suggest that the pectineal ligament may act as a secondary stabilizer of the anterior pelvis ring. The purpose of this study was to investigate the influence of the pectineal ligament's integrity on the biomechanical stability and displacement in anterior pelvic ring fractures. MethodsIn a biomechanical setup, a cyclic loading protocol was applied with sinusoidal axial force from 100 to 500 N on cadaver hemipelves with soft tissues (n = 5). After testing the native specimens (“No fracture”), increasing degrees of injury were created on the samples: 1. an osseous defect to the pubic ramus (“Bone #”), 2. cutting of all soft tissues including obturator membrane except for the pectineal ligament intact (“ObtM #”), 3. cutting of the pectineal ligament (“PectL #”) - with the loading protocol being applied to each sample at each state of injury. Fracture motion and vertical displacement were measured using a digital image correlation system and opto-metric analysis. ResultsNo failure of the constructs was observed. Creating a pubic ramus fracture (p = 0.042) and cutting the pectineal ligament (p = 0.042) each significantly increased relative fracture movement. The mean change in absolute movement was 0.067 mm (range, 0.02 mm to 0.19 mm) for ObtM # and 0.648 mm (range, 0.07 mm to 2.93 mm), for PectL # in relation to Bone # (p = 0.043). Also for absolute vertical movement, there was a significant change when the pectineal ligament was cut (p = 0.043), while there was no such effect with cutting all other soft tissues including the obturator membrane. ConclusionsBased on the findings of this in vitro study, the pectineal ligament significantly contributes to the stability of the anterior pelvic ring. An intact pectineal ligament reduces fracture movement in presence of a pubic ramus fracture.

Bilateral Testicular Evisceration Sequel to Trauma: Challenges of Management in Emergency Department

Introduction The Genitourinary (GU) tract injury is rare with an annual incidence of less than one percent. We present a rare case of traumatic degloving injury of male external genitalia with complete evisceration of bilateral testicles following motor vehicle accident. Case description 29-year-old lorry driver was brought to Emergency department following head-on crash of his lorry into a ravine resulting in chest, abdomen and pelvis slamming onto dashboard. The driver was trapped for 4.5 hours. On arrival, he was conscious but hemodynamically unstable. Clinical examination and Focused Assessment with Sonography in Trauma (FAST) was suggestive of left pneumothorax and no evidence of intraabdominal injury. Chest tube was inserted. Genital examination showed scrotal degloving wound with complete evisceration of bilateral testis. He also sustained open fracture of right tibia, fibula and left inferior pubic rami fracture. Upon stabilization, was sent for operation and intraoperatively found to have bilateral testicular rupture. He underwent scrotal exploration, and bilateral orchidopexy. Postoperatively, multiple dialysis sessions were done for rhabdomyolysis. Hormonal study yielded low levels of testosterone. He was discharged home after 2 weeks with testosterone pills. Discussion Challenges in Emergency Department setting would be prompt identification and management of life-threatening injuries along simultaneous management of degloving external genitalia injury and associated injuries. FAST and extended FAST play a key role in managing life threatening conditions. Conclusion Total evisceration of bilateral testis injury are rare. Although not life threatening, should be treated promptly and thoroughly in order to avoid long-term functional and psychological damage.

The morphological mapping of lateral compression type 1 pelvic fracture and pelvic ring stability classification: a finite element analysis

PurposeThis finite element analysis assessed lateral compression (LC-1) fracture stability using machine learning for morphological mapping and classification of pelvic ring stability.MethodsComputed tomography (CT) files of LC-1 pelvic fractures were collected. After morphological mapping and producing matrix data, we used K-means clustering in unsupervised machine learning to classify the fractures. Based on these subtypes, we manually added fracture lines in ANSYS software. Finally, we performed a finite element analysis of a normal pelvis and eight fracture subtypes based on von Mises stress and total deformation changes.ResultsA total of 218 consecutive cases were analyzed. According to the three main factors—zone of sacral injury and completion, pubic ramus injury side, and the sagittal rotation of the injured hemipelvis—the LC-1 injuries were classified into eight subtypes (I–VIII). No significant differences in stress or deformation were observed between unilateral and bilateral public ramus fractures. Subtypes VI and VIII showed the maximum stress while subtypes V–VIII showed the maximum deformation in the total pelvis and sacrum. The subtypes did not differ in superior public ramus deformation.ConclusionsComplete fracture of sacrum zones 2/3 may be a feature of unstable LC-1 fractures. Surgeons should give surgical strategies for subtypes V–VIII.

EP.FRI.680 “Avulsion of the Corona Mortis following low energy pubic rami fracture: a rare but life-threatening injury.”

Abstract We describe the case of an 81 year old gentleman who presented after a trivial fall with haemodynamic instability and worsening abdominal pain and swelling. An initial trauma CT identified superior and inferior pubic rami fractures associated with a large intra-pelvic collection. A subsequent CT angiogram confirmed a large pelvic haematoma with an active arterial bleeding from a ruptured vessel adjacent to the superior pubic rami fracture. This was managed by resuscitating him with fluids and blood transfusions followed by fluoroscopic guided Internal Iliac artery embolisation. The “Corona Mortis” is an aberrant arterial connection between the inferior epigastric artery and obturator artery and is prevalent in the hemipelvis of more than 49.3% of the population. Very rarely it can be damaged during low energy pubic rami fractures leading to haemodynamic compromise and potential death. For this reason and the fact there is a high chance that it could be missed, we wish to highlight this case, and management and emphasise the need to consider this life-threatening complication even in cases when the mechanism of injury may seem trivial.

Comparison of lumbopelvic fixation and iliosacral screw fixation for the treatment of bilateral sacral fractures

BackgroundBilateral sacral fractures result in traumatic disruption of the posterior pelvic ring. Treatment for unstable posterior pelvic ring fractures should aim for fracture reduction and rigid fixation to facilitate early mobilization. Iliosacral screw fixation (ISF) and lumbopelvic fixation (LPF) were recommended for the treatment of these injuries. No algorithm or gold standard exists for surgery of these fractures.PurposeThe purpose of this study was to evaluate the differences between ISF and LPF in bilateral sacral fractures regarding intraoperative procedures, complications and postoperative mobilization. The secondary aim was to determine whether demographics influence surgical treatment.MethodsOver a 4-year period (2016–2019), 188 consecutive patients with pelvic ring injuries were treated at one academic level 1 trauma center and retrospectively identified. Fractures were classified according to the AO/OTA classification system. Seventy-seven patients were treated with LPF or ISF in combination with internal fixation of pubic rami fractures and could be included in this study. Comparisons were made between demographic and perioperative data. Infection, hematoma and hardware malpositioning were used as complication variables. Mobilization with unrestricted weight bearing was used as outcome variable. Follow-up was at least 6 months postoperatively.ResultsOperative stabilization of bilateral posterior pelvic ring injuries was performed in 77 patients. Therefore, 29 patients (females 59%) underwent LPF whereas 48 patients (females 83%) had bilateral ISF. The ISF group was older (76 yrs.) compared to the LPF group (62 yrs.) (p = 0.001), but no differences regarding BMI or comorbidities were detected. Time for surgery was reduced for patients who were treated with ISF compared to lumbopelvic fixation (73 min vs. 165 min; respectively, p < 0.001). But this did not result in reduced fluoroscopic time or radiation exposure. Overall complication rate was not different between the groups. Patients with LPF had a greater length of stay (p = 0.008) but were all weight bearing as tolerated when discharged (p < 0.001).ConclusionBilateral posterior pelvic ring injuries of the sacrum can be sufficiently treated by LPF or ISF. LPF allows immediate weight bearing which may benefit younger patients and patients with an elevated risk for pneumonia or other pulmonary complications. Treatment with ISF reduces operative time, length of stay and postoperative wound infection. Elderly patients may be better suited for treatment with ISF if there is concern that the patient may not tolerate the increased operative time.

1085 Equestrian Related Pelvic and Acetabular Fractures – Experience from a Major Trauma Centre in England

Abstract Introduction Equestrianism is enjoyed by three million people in the UK; however, there is a lack of literature on pelvic and acetabular (P&amp;A) injuries incurred through the sport. We aim to describe P&amp;A injuries sustained in equestrian accidents, discuss management, and establish their outcomes. Method Data was extracted from a prospectively collected database of referrals to the P&amp;A Service of a Major Trauma Centre (MTC) from 01/01/2016 to 31/12/2020 and cross-referenced with medical records. Results 60 of the 1,218 P&amp;A referrals were secondary to horse-riding accidents. Mean age 45 (SD 16.59); 46 female; 33 managed non-operatively and 27 managed operatively at the MTC. There was sufficient information for 59 cases to be classified; 46 of the injuries were pelvic fractures (10 anterior-posterior compression; 29 lateral compression; 4 sacral and 3 pubic rami fractures) and 13 were acetabular (2 anterior column; 1 anterior wall; 2 associated both columns; 1 posterior column and posterior wall; 1 posterior wall; 2 T-shaped and 4 transverse fractures). The operative group were managed by examination under anaesthesia (n = 3), open reduction internal fixation (n = 22) or percutaneous fixation (n = 2). Mean hospitalisation was 9.2 days (SD 5.44). 81% were non-weight-bearing post-operatively and mean time to independent mobilisation was 12.6 weeks (SD 7.09). Return-to-riding information was available for 8 patients with a mean of 29.5 weeks (SD 11.55). Conclusions Equestrianism can result in significant P&amp;A injuries. Patients should be counselled that they may have a long recovery, a protracted return-to-riding time and some may never return to the sport.

Finite element analysis of different intramedullary fixation methods for the treatment of senile pubic ramus fractures

To evaluate the biomechanical stability of elastic intramedullary nail in the treatment of pubic ramus fractures by finite element analysis, and to compare the stability of elastic intramedullary nail with cannulated screw intramedullary fixation. The CT data of the pelvis of a volunteer were selected, and the three-dimensional model of the pelvis was reconstructed by reverse engineering software and the fracture of the pubic ramus fractures was simulated by osteotomy. The hollow nail model, single elastic nail model and double elastic nailmodel were assembled with different implants respectively. The mesh division, material assignment loading and other steps were carried out in the ANSYS software, and then the calculation was submitted. The overall displacement of the pelvis of the elastic nail model was smaller than that of the cannulated screw model, in which the double elastic nail model had the smallest overall displacement, but the cannulated screw model had the smallest plant displacement and the single elastic nail model had the largest plant displacement. Although the stress of cannulated screw was small, there was obvious stress concentration, the stress of elastic nail was large, but there was no obvious stress concentration, especially the stress distribution of double elastic nail was more uniform and the overall stress of pelvis was the smallest. All the three fixation methods can effectively improve the stability of the anterior ring of the pelvis. Among them, there is no significant difference in the overall biomechanical propertiesof hollow nail fixation and double elastic nail fixation, which is better than that of single elastic nail fixation. Elastic nail fixation has the advantages of minimally invasive surgery and good biomechanical stability, so it can be used as a better surgical method for the treatment of pubic ramus fractures.

Unusual Case of Pelvic Osteomyelitis Revealing Osteoporosis

Pelvic osteomyelitis is an uncommon and challenging condition to treat. Pressure ulcers, spinal injuries, contiguous sources of tracking infections, pelvic surgical procedures, traumatic injuries and open fractures all serve as nidi for developing pelvic osteomyelitis. We present a case of pelvic osteomyelitis suspected to be caused by insufficiency fractures due to osteoporosis in an anorexic adult.51 year old postmenopausal Caucasian female with undiagnosed anorexia presented to the hospital for severe right-sided pelvic pain and nausea. She denied fevers, vomiting, trauma, surgical procedures, history of pelvic infections, abnormal vaginal discharge, travel, prolonged steroid therapy. She disclosed a strict vegetarian diet, excessive daily exercise, low dairy intake and over 100lb intentional weight loss over the past 30 years. She reported normal menses, used oral contraceptives between ages of 25 to 30, and reached menopause at 49 years. For many years, she denied medical care including age-appropriate cancer screenings. She is employed in academia and denies tobacco, alcohol or drug use. On admission, height 153cm and weight 43kg, BMI 16.7kg/m2. Examination was notable for frail body habitus, moderate RLQ and pelvic tenderness, prominent PSIS and SI joints with decreased RLE range of motion. Laboratory results showed calcium 9.5mg/dL (n 8.6–10.4), phosphorus 4.1mg/dL (2.5–4.5), ALP 181IU/L (45–115), PTH 23pg/dL (n 9–76), Vitamin D 35ng/dL (n 25–80), 24-hour urinary calcium 285mg/24h (n 50–400). Abdominopelvic CT scan showed chronic right pubic ramus and bilateral sacral insufficiency fractures confirmed on MRI with septic arthritis of the pubic symphysis, osteomyelitis of pubic bodies and intramuscular abscess extending to the right adductor muscle. Wound culture was positive for Streptococcus viridans and pelvic bone biopsy showed degenerative changes. The patient completed IV Ceftriaxone therapy and underwent DXA scan confirming osteoporosis (T-scores:-3.8 lumbar spine L1-L4, -3.6 left femoral neck, -3.3 right femoral neck). Alendronate 10mg daily and calcium citrate-vitamin D 1000mg-800IU twice daily was prescribed. Diagnostic workup for secondary causes of severe osteoporosis was unremarkable except for hypercalciuria, for which calcium supplement was held with a plan to repeat in the future. Concern for her cachectic appearance and severity of her illness also elicited a dietician referral. Pelvic osteomyelitis and septic arthritis are seldom found without inciting insults. We report an atypical cause of presumed anorexia induced osteoporosis resulting in pelvic osteomyelitis. Untreated osteoporosis may lead to fracture, resulting in inflammation and predisposing patients to infections. Thus, early recognition and evaluation of osteoporosis in patients at high risk for fracture, such as patients with anorexia, is critical for prevention.

Results of minimally invasive quick definitive fixation of unstable bony pelvic disruption by combined retrosacral transiliac rods and anterior external fixator during a critical national period

&lt;p class="abstract"&gt;Unstable pelvic ring fractures are challenging injuries regarding their reduction and stabilization. The presented study evaluates the results of a minimally invasive and quick one-stage stabilization of sacral fractures combined with bilateral pubic rami fractures during a period of national limited resources and decreased general security aiming at reduction of the duration of hospital stay and overall costs. Sixteen patients with unilateral sacral fractures and bilateral pubic rami fractures without lumbosacral dissociation were fixed by two retrosacral threaded transiliac rods and an anterior external fixator. Results were assessed with Majeed score and Matta-Tornetta radiologic criteria for post-operative reduction. The follow up period averaged 23 months. There were 9 cases excellent, 4 cases good and 3 cases fair. The duration of surgery and the number of intra-operative X-ray images were recorded. The presented technique is simple, reproducible and quick for one-stage fixation of the unstable pelvic bony disruption. It reduces the operative time, radiation exposure, duration of hospital stays and cost of care during a critical national period with limited resources. &lt;/p&gt;

Anatomical position of the corona mortis relative to the anteroposterior and inlet views.

Although pubic ramus fractures are common in the elderly, resultant hemodynamic instability is a rare complication. The corona mortis, a vascular anastomosis between the obturator vessels and the external iliac vessels in the retropubic space, is occasionally damaged by fractures of the pubic ramus, causing significant hemorrhage. The purpose of this study was to evaluate the incidence and anatomical position of the corona mortis on the anteroposterior and inlet views. Sixty-one cadavers (122 hemipelvizes) were dissected and the incidence of the corona mortis was evaluated. Photographs were then taken simulating anteroposterior and inlet radiographs, and labeled as the anteroposterior and inlet views. The distance from the pubic symphysis to the corona mortis was measured on each of the two views. The corona mortis was present in 76.1% of hemipelvizes. The corona mortis traverses along the periosteum of the dorsal surface of the pubis. The incidence of arterial corona mortis was 28.3% and that of venous corona mortis was 76.1%. The distance from the superior margin of the symphysis pubis to the corona mortis measured 47.7 ± 9.9 (45.9-49.6) mm on the anteroposterior view, and 59.4 ± 9.2 (57.3-61.5) mm on the inlet view. In order to predict possible hemodynamic instability of the corona mortis following pubic ramus fractures, it is of clinical significance to precisely establish the anatomical position of the corona mortis on the anteroposterior and inlet views.

Factors Associated With Failure of Superior Pubic Ramus Screws.

Examine factors associated with fixation failure in patients treated with superior intramedullary ramus screws. Retrospective. Single, Level 1 trauma center. Unstable pelvic ring fractures amenable fixation that included superior intramedullary ramus screws. Percutaneously inserted intramedullary superior ramus screw fixation of superior pubic ramus (SPR) fractures. Loss of reduction (LOR) of the SPR fracture defined as >2 mm displacement on pelvic radiographs at any time point in follow-up. Two hundred eighty-five fractures in 211 patients (age 44, 95% confidence interval 40.8%-46.4%, 59.3% women, 55.1% retrograde screws) were included in the analysis. 14 (4.9%) of fractures had LOR. Patients were significantly more likely to have LOR as age increased (P = 0.01), body mass index (BMI) increased (P = 0.01), and if they were women (P < 0.01). There was a significantly decreased LOR (P < 0.01) as fractures moved further from the pubis symphysis. Retrograde screws were significantly (P < 0.01) more likely to have LOR. In SPR fractures treated with retrograde screws, failure was significantly associated with increasing BMI (P = 0.02), the presence of an inferior ramus fracture (P = 0.02), and trended toward significance with increasing age (P = 0.06), and decreased distance from the symphysis (P = 0.07). Superior ramus screws are associated with a low failure rate (4.9%), which is lower than previously reported. Retrograde screw insertion, distance from the symphysis, increasing age, increasing BMI, decreased distance from the symphysis, and ipsilateral inferior ramus fractures were predictors of failure. In these patients, alternative modalities should be considered, although low rates of failure can still be expected. Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Metastatic medullary thyroid carcinoma presenting as ectopic Cushing's syndrome.

SummaryA 41-year-old male presented to the Emergency Department with a 6-month history of back and hip pain. Skeletal survey revealed bilateral pubic rami fractures and MRI of the spine demonstrated multiple thoracic and lumbar fractures. Secondary work up for osteoporosis was undertaken. There was no evidence of hyperparathyroidism and the patient was vitamin D replete. Testosterone (T) was low at 1.7 nmol/L (8.6–29.0) and gonadotrophins were undetectable. The patient failed a 1 mg dexamethasone suppression test (DST) with a morning cortisol of 570 nmol/L (<50) and subsequently a low dose DST with a cortisol post 48 h of dexamethasone of 773 nmol/L (<50) and an elevated ACTH 98 ng/L. A corticotropin-releasing factor (CRF) test suggested ectopic ACTH secretion. The patient was commenced on teriparatide for osteoporosis and metyrapone to control the hypercortisolaemia. A positron emission tomography (PET) scan to look for the source of ACTH secretion demonstrated right neck adenopathy. Biopsy and subsequent lymph node dissection were performed and histology revealed a metastatic neuroendocrine tumour. Immunostaining was positive for calcitonin and thyroid transcription factor 1 (TTF1). Serum calcitonin was also significantly elevated at 45 264 ng/L (<10). The patient proceeded to a total thyroidectomy and left neck dissection. Histology confirmed a 7 mm medullary thyroid carcinoma (MTC). Post-operatively, the patient commenced vandetanib therapy and achieved a clinical and biochemical response. After approximately 18 months of vandetanib therapy, the patient developed recurrent disease in his neck. He is currently on LOXO-292 and is doing well 36 months post-diagnosis.Learning pointsUnexplained osteoporosis requires thorough investigation and the workup for secondary causes is not complete without excluding glucocorticoid excess.MTC should be considered when searching for sources of ectopic ACTH secretion.Resistance to tyrosine kinase inhibitors is well described with MTC and clinicians should have a low threshold for screening for recurrent disease.

Differential diagnosis of acute traumatic hip pain in the elderly

Elderly patients who present with an inability to weight bear following a fall, with normal radiographs, should be appropriately investigated to rule out an occult hip fracture (OHF). We aim to identify both the range and incidence of the differential diagnosis of acute traumatic hip pain in a large series of patients investigated for OHF. A retrospective analysis of consecutive patients investigated for an OHF with magnetic resonance imaging (MRI) was performed. Dedicated musculo- skeletal radiologists reported the MRI scans. All diagnoses including hip fractures, other fractures and soft tissue injuries were recorded. Case notes were reviewed for all patients to identify subsequent complications, management and outcomes. A total of 157 patients fulfilled the inclusion criteria. 52 (33%) patients had a fracture of the proximal femur. The majority of patients with proximal femoral fractures required surgical intervention. 9 patients who had fractures of the greater trochanter of the femur without fracture extension across the femoral neck were managed non-operatively. 40 (25%) patients had fractures of the pelvis, with a combined pubic rami and sacral fracture occurring frequently. The most common diagnosis was a soft tissue injury alone that was seen in 60 (38%) patients imaged. Injuries to the gluteal muscle group, iliopsaos complex and trochanteric bursa were most prevalent. All patients with soft tissue injuries or fractures of the pelvis were successfully managed non-operatively. This study highlights a wide range of differential diagnoses in elderly patients presenting with acute traumatic hip pain. The proximal femur was fractured in 33% of patients imaged for OHFs in our series. The most common diagnosis was a soft tissue injury around the hip and pelvis ; these injuries can be successfully managed without surgery.

9 Patient Outcomes From A General Inpatient Rehabilitation Ward, Does Frailty or Reason for Admission Make A Difference to Patient Outcome?

Abstract Introduction With our ageing population there is increasing number of patients who experience a decline in their mobility either because of their underlying diagnosis or as a consequence of their hospital stay. There are only a limited number of inpatient rehabilitation beds and it is therefore important to identify those that would benefit the most from inpatient rehabilitation. Method We undertook a retrospective study looking at three months of discharges from an inpatient rehabilitation ward in Manchester. Patients were categorised based on diagnosis (Pubic rami fracture, other fractures, fall with no bony injury and finally medical reasons) and Clinical Frailty Score to see if either had any effect on whether patients mobility improved and to what degree. Results Patients with a reduced mobility on admission were identified and then categorised based on diagnosis. Of those patients admitted with a pubic rami fracture 66.7% improved on the ward with 33.3% of patients reaching their baseline mobility. The mobility of 85.7% of patients with other fractures improved with 42.9% reaching their baseline. Patients admitted following a fall without bony injury showed, 75% improvement with 50% reaching their baseline. Of those admitted for medical reasons 88.9% of those improved but only 22.2% reaching their baseline mobility. The lowest proportion of any category. Those admitted for medical reasons also had the longest median average stay on the rehab ward (33.5 days) followed by other fractures (33 days) then fall with no bony injury (21.5 days) and finally the shortest average stay, pubic rami fractures (20 days). Patients were also grouped occurring to their preadmission Clinical Frailty Score. With the exception of those who scored four (only a small number of patients), there was a negative correlation between an increasing frailty score and the proportion of patients whose mobility improved. However as frailty score increased the proportion of patients who improved to their baseline increased. Conclusion Our study has shown that the majority of patients benefitted from their admission regardless of diagnosis, however those admitted for medical reasons had the lowest chance of reaching their baseline mobility despite the longest admissions on the ward. Further research may be beneficial to investigate if they do better in a different rehabilitation setting.

Can preoperative radiographs predict hardware complication or fracture displacement after operative treatment of pelvic ring injuries?

Operative fixation of pelvic ring injuries is associated with a high risk of hardware failure and loss of reduction. The purpose of this study was to determine whether preoperative radiographs can predict failure after operative treatment of pelvic ring injuries and if the method of fixation effects their risk. We conducted a retrospective cohort study of 143 patients with pelvic ring injuries treated with operative fixation at a level 1 trauma center. Preoperative radiographs were examined for the presence of the following characteristics: bilateral rami fractures, segmental or comminuted rami fractures, contralateral anterior and posterior injuries, complete sacral fracture, and displaced inferior ramus fractures. The method of fixation was classified based on the presence of anterior, posterior, or combined anterior and posterior fixation as well as whether or not posterior fixation was performed at a single or multiple sacral levels. Post-operative radiographs were examined for hardware failure or loss of reduction. Twenty-one patients (14.7%) demonstrated either hardware complication or fracture displacement within 6 months of surgery. Male sex was associated with a decreased risk of hardware complication (OR 0.11 [0.014, 0.86]; p=0.03). Posterior pelvic ring fixation at multiple sacral levels was associated with a decreased risk of fracture displacement (OR 0.21 [0.056, 0.83]; p=0.02). We were unable to demonstrate a significant association between preoperative radiographic characteristics and risk of hardware failure or fracture displacement. Our study demonstrates that both gender and the method of posterior fixation are associated with hardware failure or displacement.

Functional assessment of operative and non-operative management in major pelvic fracture at Dr. Moewardi Hospital, Surakarta, Indonesia

Introduction: Pelvic fractures are responsible for skeletal injuries and soft tissue-related injuries. Pelvic fracture is a disorder of the pelvis bones' structure, including the hip bone, sacrum, and coccyx. The condition will result in stable status if the pelvis can resist weight-bearing loads without the incidence of any displacement. This study aims to determine pelvic fracture outcome, in which operative and non-operative management used the Majeed score to evaluate the functional results.Method: A retrospective case-control study was performed to retrieve data from medical records of patients with pelvic fractures at Dr. Moewardi Hospital Surakarta for the period from January 1st, 2017, until December 31st, 2019. The evaluation of reduction quality was conducted following the scores put forward by Majeed to evaluate the clinical outcomes. Data analyzing used SPSS V.24.0 (IBM Corp). P-value of &lt;0.05 was determined as the statistical significance.Results: In this study, there were 40 samples of pelvic fracture cases; 60% were male, 55% were aged 19 – 40 y.o, motor crash caused 67%, 37.5% were cases of pubic rami fractures. Besides, operative management was 52,5%, while non-operative was 47,5%. Further, operative management's functional outcome was excellent at 66%, good at 19%, fair at 9%, and poor at 8% of the patients. Patients treated with operative management had significantly fewer severe injuries, as rated using the Majeed score than the non-operative group.Conclusion: The results suggest that operative treatment may be a viable option in treating major pelvic fracture as it provides better functional results than non-operative treatment.

ASSERT (Acute Sacral inSufficiEncy fractuRe augmenTation): Perceptions in the Assessment and Treatment of Pubic Rami and Sacral Fragility Fractures Amongst Healthcare Professionals in Geriatric Medicine and Surgery-A Qualitative Study.

Background:Pubic rami fragility fractures are common in older people and result in significant morbidity and increased mortality. Co-existing fractures of the sacrum are common, but routinely missed. The aim of the study was to explore the perceptions in the assessment and treatment of pubic rami and sacral fragility fractures amongst healthcare professionals.Methods:We interviewed 14 participants about their experience in the assessment and treatment of patients presenting with pubic rami fragility fractures. Data was analyzed using an inductive thematic approach.Results:The majority of patients presenting with a pubic rami fragility fracture were managed by geriatricians. However, many of the geriatricians were not aware that these fractures have a high association with co-existing sacral fragility fractures. Furthermore, they were not aware of the limitations of standard x-ray imaging, nor of the potential benefits of surgical intervention for sacral fragility fractures. Spinal surgeons recommended that early, more specialist imaging in patients with pubic rami fragility fractures failing to mobilize, would change clinical management, if found to have a coexisting sacral fragility fracture, amenable to surgical intervention.Conclusions:The awareness, assessment and management of sacral fragility fractures in patients presenting with pubic rami fragility fractures is poor amongst healthcare professionals in geriatric medicine. Spinal surgeons in this study advocate early further imaging and surgical intervention in patients confirmed to have a concomitant sacral fragility fracture who are failing to mobilize.