Publications

2018

Di Chang, C.-, Wu, J. S., Mhuircheartaigh, J. N., Hochman, M. G., Rodriguez, E. K., Appleton, P. T., & Mcmahon, C. J. (2018). Effect of sarcopenia on clinical and surgical outcome in elderly patients with proximal femur fractures.. Skeletal Radiology, 47(6), 771-777. https://doi.org/10.1007/s00256-017-2848-6 (Original work published 2018)

PURPOSE: To investigate the relationship between sarcopenia with short-term surgical outcome in elderly patients with proximal femur fractures.

METHODS AND MATERIALS: Following Institutional Review Board approval, a database of patients receiving a pelvis CT scan for acute trauma between January 2000-August 2016 was screened for an isolated proximal femur fracture. Patients were excluded if they were: < 50 years old, had conditions predisposing to sarcopenia (renal failure, congestive heart failure, muscular dystrophies), had undergone no surgical treatment, had other major traumatic injuries, or had a pathologic femur fracture. The paraspinal muscle density (PSD) at the L4 level was measured in Hounsfield units. The skeletal muscle index (SMI) was measured as the total skeletal muscle area at L4 divided by patient height.2 PSD and SMI were tested for association with surgical outcome measures: length of hospital stay, perioperative mortality, medical complications, in-hospital blood transfusion volume, and 90-day readmission rate, using multiple variable regression analysis. Pearson correlation of PSD and SMI was performed.

RESULTS: Controlling for age, gender, body mass index (BMI), and fracture type, low PSD and SMI were both independently associated with longer length of hospitalization (p = 0.008 and p = 0.032, respectively). Low PSD was associated with a higher amount of blood transfusion volume during the perioperative period (p = 0.004). Pearson correlation revealed moderate positive correlation between the SMI and PSD (r = 0.579, p < 0.001).

CONCLUSION: In proximal femur fractures, elderly patients with sarcopenia are more likely to have prolonged hospitalization following surgery and require more blood transfusion volume during the perioperative period.

Miranda, M. A., DeAngelis, J. P., Canizares, G. H., & Mast, J. W. (2018). Double Oblique Osteotomy: A Technique for Correction of Posttraumatic Deformities of the Distal Femur.. Journal of Orthopaedic Trauma, 32 Suppl 1, S60-S65. https://doi.org/10.1097/BOT.0000000000001090 (Original work published 2018)

OBJECTIVE: To evaluate the outcomes of a double oblique osteotomy for the management of distal femoral malunions and a combination malunion/nonunion.

DESIGN: Case series.

SETTING: Level 1/2 hospital.

PATIENTS/PARTICIPANTS: Ten patients with a mean age of 50 years (range 30-69 years) with posttraumatic deformities of the distal femur.

INTERVENTION: A 2-level, length-sparing osteotomy was performed in accordance with a detailed preoperative plan for correction of the mechanical axis in a distal femoral deformity.

MAIN OUTCOME MEASUREMENTS: Radiographic alignment and physical examination.

RESULTS: Average length of follow-up was 26 months. The average coronal plane correction was 12 degrees (range 4-20 degrees) for a residual coronal plane deformity average of 0 degrees. The residual flexion deformity was less than 10 degrees in all cases. All rotational deformities were corrected to within 5 degrees of neutral. The average limb length correction was 1.6 cm (range 0.4-2.6 cm). Eight patients recovered without complication. One patient received bone grafting to achieve union, and a prominent angled blade plate was removed in another. An isolated saphenous nerve sensory deficit resolved spontaneously.

CONCLUSIONS: The double oblique osteotomy is a reliable technique for the correction of multiplane deformities of the distal femur.

LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Bhashyam, A. R., Rodriguez, E. K., Appleton, P., & Wixted, J. J. (2018). The Effect of Hip Positioning on the Projected Femoral Neck-Shaft Angle: A Modeling Study.. Journal of Orthopaedic Trauma, 32(7), e258-e262. https://doi.org/10.1097/BOT.0000000000001175 (Original work published 2018)

OBJECTIVES: To determine and test mathematical models of the relationship between hip flexion-extension, femoral rotation, and NSA. We hypothesized that hip flexion-extension and femoral rotation would result in NSA measurement error.

METHODS: Two mathematical models were developed to predict NSA in varying degrees of hip flexion-extension and femoral rotation. The predictions of the equations were tested in vitro using a model that varied hip flexion-extension while keeping rotation constant, and vice versa. The NSA was measured from an anterior-posterior radiograph obtained with a C-arm. Attributable measurement error based on hip positioning was calculated from the models.

RESULTS: The predictions of the model correlated well with the experimental data (correlation coefficient = 0.82-0.90). A wide range of patient positioning was found to result in <5-10 degrees error in the measurement of NSA. Hip flexion-extension and femoral rotation had a synergistic effect in measurement error of the NSA. Measurement error was minimized when hip flexion-extension was within 10 degrees of neutral.

CONCLUSIONS: This study demonstrates that hip flexion-extension and femoral rotation significantly affect the measurement of the NSA. To avoid inadvertently fixing the proximal femur in varus or valgus, the hip should be positioned within 10 degrees of neutral flexion-extension with respect to the C-arm to minimize positional measurement error.

Caggiano, N. M., Harper, C. M., & Rozental, T. D. (2018). Management of Proximal Interphalangeal Joint Fracture Dislocations.. Hand Clinics, 34(2), 149-165. https://doi.org/10.1016/j.hcl.2017.12.005 (Original work published 2018)

Fracture dislocations of the proximal interphalangeal (PIP) joint of the finger are often caused by axial load applied to a flexed joint. The most common injury pattern is a dorsal fracture dislocation with a volar lip fracture of the middle phalanx. Damage to the soft-tissue stabilizers of the PIP joint contributes to the deformity seen with these fracture patterns. Unfortunately, these injuries are commonly written off and left untreated. A late-presenting PIP joint fracture dislocation has a poor chance of regaining normal range of motion. The provider must be suspicious of these injuries. Treatment options and algorithm are reviewed.

Mohamadi, A., Chan, J. J., Lian, J., Wright, C. L., Marin, A. M., Rodriguez, E. K., von Keudell, A., & Nazarian, A. (2018). Risk Factors and Pooled Rate of Prolonged Opioid Use Following Trauma or Surgery: A Systematic Review and Meta-(Regression) Analysis.. The Journal of Bone and Joint Surgery. American Volume, 100(15), 1332-1340. https://doi.org/10.2106/JBJS.17.01239 (Original work published 2018)

BACKGROUND: Prolonged use of opioids initiated for surgical or trauma-related pain management has become a global problem. While several factors have been reported to increase the risk of prolonged opioid use, there is considerable inconsistency regarding their significance or effect size. Therefore, we aimed to pool the effects of risk factors for prolonged opioid use following trauma or surgery and to assess the rate and temporal trend of prolonged opioid use in different settings.

METHODS: Following PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, we searched Embase, PubMed, Web of Science, EBM (Evidence-Based Medicine) Reviews - Cochrane Database of Systematic Reviews, and ClinicalTrials.gov from inception to August 28, 2017, without language restriction. Observational studies reporting risk factors for, or the rate of, prolonged opioid use among adult patients following surgery or trauma with a minimum of 1 month of follow-up were included. Study and patient characteristics, risk factors, and the rate of prolonged opioid use were synthesized.

RESULTS: Thirty-seven studies with 1,969,953 patients were included; 4.3% (95% confidence interval [CI] = 2.3% to 8.2%) of patients continued opioid use after trauma or surgery. Prior opioid use (number needed to harm [NNH] = 3, odds ratio [OR] = 11.04 [95% CI = 9.39 to 12.97]), history of back pain (NNH = 23, OR = 2.10 [95% CI = 2.00 to 2.20]), longer hospital stay (NNH = 25, OR = 2.03 [95% CI = 1.03 to 4.02]), and depression (NNH = 40, OR = 1.62 [95% CI = 1.49 to 1.77]) showed some of the largest effects on prolonged opioid use (p < 0.001 for all but hospital stay [p = 0.042]). The rate of prolonged opioid use was higher in trauma (16.3% [95% CI = 13.6% to 22.5%]; p < 0.001) and in the Workers' Compensation setting (24.6% [95% CI = 2.0% to 84.5%]; p = 0.003) than in other subject enrollment settings. The temporal trend was not significant for studies performed in the U.S. (p = 0.07) while a significant temporal trend was observed for studies performed outside of the U.S. (p = 0.014).

CONCLUSIONS: To our knowledge, this is the first meta-analysis reporting the pooled effect of risk factors that place patients at an increased chance for prolonged opioid use. Understanding the pooled effect of risk factors and their respective NNH values can aid patients and physicians in developing effective and individualized pain-management strategies with a lower risk of prolonged opioid use.

LEVEL OF EVIDENCE: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

Earp, B. E., Mora, A. N., & Rozental, T. D. (2018). Extending a Hand: Increasing Diversity at the American Society for Surgery of the Hand.. The Journal of Hand Surgery, 43(7), 649-656. https://doi.org/10.1016/j.jhsa.2018.05.002 (Original work published 2018)

PURPOSE: This study aimed to assess diversity among American Society for Surgery of the Hand (ASSH) members, ASSH annual meeting attendees, and ASSH annual meeting presenters from 2010 to 2016. We hypothesized that over the past 7 years, the ASSH has seen an increase in diversity in its membership, annual meeting attendance, and presenters.

METHODS: Detailed demographic data for membership, annual meeting attendance, and annual meeting presenters were obtained from the ASSH for a 7-year period (2010-2016). The proportion of women, underrepresented minorities (URM), and nationality of members, attendees, and presenters was compared over the 7 years to assess trends and differences.

RESULTS: Membership in ASSH has increased 30.0% over the past 7 years. Whereas United States membership increased by 113 members annually, international membership increased by 53 members annually, reflecting a 136% total increase. The percentage of women and URM attending the annual meeting is higher than the that of women and URM members. There have been increases in the number of women, URM, and international members over this period.

CONCLUSIONS: Over the study period, the ASSH membership has seen increases in women and URM representation. International membership has seen substantial growth. In addition, meeting attendance by international members has increased, particularly since implementation of the guest nation program.

CLINICAL RELEVANCE: Women and URM make up an increasing percentage of ASSH members. International members and presenters have also increased. Although diversity has improved over the past several years, the ASSH should continue to efforts toward greater inclusion and representation.

Nandyala, S. , V, Giladi, A. M., Parker, A. M., & Rozental, T. D. (2018). Comparison of Direct Perioperative Costs in Treatment of Unstable Distal Radial Fractures: Open Reduction and Internal Fixation Versus Closed Reduction and Percutaneous Pinning.. The Journal of Bone and Joint Surgery. American Volume, 100(9), 786-792. https://doi.org/10.2106/JBJS.17.00688 (Original work published 2018)

BACKGROUND: As the United States transitions to value-based insurance, bundled payments, and capitated models, it is paramount to understand health-care costs and resource utilization. The financial implications of open reduction and internal fixation (ORIF) with a volar locking plate for management of unstable distal radial fractures have not been established. We aimed to elucidate cost differences between ORIF and closed reduction and percutaneous pinning (CRPP). Our hypothesis was that ORIF has greater direct perioperative costs than CRPP but that the costs equilibrate over time.

METHODS: We reviewed financial data for 40 patients prospectively enrolled and randomized to undergo CRPP or ORIF for treatment of a closed, displaced, unstable distal radial fracture. Clinical and functional outcomes, hospital-associated direct perioperative costs, postoperative care and therapy costs, and costs for additional procedures were compared. Cost data were stratified into perioperative, 90-day, and 1-year periods, and were reported utilizing cost ratios (CRs) relative to the CRPP cohort. Statistical analysis was performed with chi-square and independent-samples t tests with an alpha level of <0.05.

RESULTS: Seventeen patients underwent CRPP and 23 underwent ORIF with a volar plate. Patients who underwent ORIF incurred greater 90-day (CR = 2.03/1.0, p < 0.001) and 1-year (CR = 1.60/1.0, p < 0.001) direct costs than those who underwent CRPP. The differential was greatest in the immediate perioperative period and gradually decreased over time. Operating room fees (CR = 1.7/1.0, p < 0.001), operating room implants, anesthesia (CR = 1.8/1.0, p < 0.001), and total perioperative costs (CR = 2.7/1.0, p < 0.001) were significantly greater in the ORIF cohort. Rehabilitation and cast technician costs were comparable (CR = 0.9/1.0 [ORIF/CRPP], p = 0.69). At 1 year, the CR for all costs of decreased to 1.6/1.0 (ORIF/CRPP, p < 0.001). Compared with the CRPP cohort, the ORIF cohort demonstrated significantly better functional outcomes at 6, 9, and 12 weeks and similar outcomes at 1 year.

CONCLUSIONS: ORIF for a displaced, unstable distal radial fracture incurred greater direct costs than CRPP. Although implant costs for ORIF provided the greatest cost differential, additional procedures and higher clinic costs in the CRPP cohort narrowed the 90-day and 1-year cost gaps.

LEVEL OF EVIDENCE: Economic Level II. See Instructions for Authors for a complete description of levels of evidence.

Spang, R. C. , Iii, Nasr, M. C., Mohamadi, A., DeAngelis, J. P., Nazarian, A., & Ramappa, A. J. (2018). Rehabilitation following meniscal repair: a systematic review.. BMJ Open Sport & Exercise Medicine, 4(1), e000212. https://doi.org/10.1136/bmjsem-2016-000212 (Original work published 2018)

OBJECTIVE: To review existing biomechanical and clinical evidence regarding postoperative weight-bearing and range of motion restrictions for patients following meniscal repair surgery.

METHODS AND DATA SOURCES: Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guideline, we searched MEDLINE using following search strategy: (((("Weight-Bearing/physiology"[Mesh]) OR "Range of Motion, Articular"[Mesh]) OR "Rehabilitation"[Mesh])) AND ("Menisci, Tibial"[Mesh]). Additional articles were derived from previous reviews. Eligible studies were published in English and reported a rehabilitation protocol following meniscal repair on human. We summarised rehabilitation protocols and patients' outcome among original studies.

RESULTS: Seventeen clinical studies were included in this systematic review. There was wide variation in rehabilitation protocols among clinical studies. Biomechanical evidence from small cadaveric studies suggests that higher degrees of knee flexion and weight-bearing may be safe following meniscal repair and may not compromise the repair. An accelerated protocol with immediate weight-bearing at tolerance and early motion to non-weight-bearing with immobilising up to 6 weeks postoperatively is reported. Accelerated rehabilitation protocols are not associated with higher failure rates following meniscal repair.

CONCLUSIONS: There is a lack of consensus regarding the optimal postoperative protocol following meniscal repair. Small clinical studies support rehabilitation protocols that allow early motion. Additional studies are needed to better clarify the interplay between tear type, repair method and optimal rehabilitation protocol.

Serebrakian, A. T., Pickrell, B. B., Varon, D. E., Mohamadi, A., Grinstaff, M. W., Rodriguez, E. K., Nazarian, A., Halvorson, E. G., & Sinha, I. (2018). Meta-analysis and Systematic Review of Skin Graft Donor-site Dressings with Future Guidelines.. Plastic and Reconstructive Surgery. Global Open, 6(9), e1928. https://doi.org/10.1097/GOX.0000000000001928 (Original work published 2018)

BACKGROUND: Many types of split-thickness skin graft (STSG) donor-site dressings are available with little consensus from the literature on the optimal dressing type. The purpose of this systematic review was to analyze the most recent outcomes regarding moist and nonmoist dressings for STSG donor sites.

METHODS: A comprehensive systematic review was conducted across PubMed/MEDLINE, EMBASE, and Cochrane Library databases to search for comparative studies evaluating different STSG donor-site dressings in adult subjects published between 2008 and 2017. The quality of randomized controlled trials was assessed using the Jadad scale. Data were collected on donor-site pain, rate of epithelialization, infection rate, cosmetic appearance, and cost. Meta-analysis was performed for reported pain scores.

RESULTS: A total of 41 articles were included comparing 44 dressings. Selected studies included analysis of donor-site pain (36 of 41 articles), rate of epithelialization (38 of 41), infection rate (25 of 41), cosmetic appearance (20 of 41), and cost (10 of 41). Meta-analysis revealed moist dressings result in lower pain (pooled effect size = 1.44). A majority of articles (73%) reported better reepithelialization rates with moist dressings.

CONCLUSION: The literature on STSG donor-site dressings has not yet identified an ideal dressing. Although moist dressings provide superior outcomes with regard to pain control and wound healing, there continues to be a lack of standardization. The increasing commercial availability and marketing of novel dressings necessitates the development of standardized research protocols to design better comparison studies and assess true efficacy.