Mandibular transverse dentoalveolar and skeletal changes associated with lip bumper and rapid maxillary expander: A cone-beam computed tomography study.

INTRODUCTION: Currently, there is little consensus regarding the spontaneous uprighting of the mandibular dentoalveolar complex in response to maxillary expansion, which poses the question about the necessity of combining mandibular treatment with rapid maxillary expansion to coordinate the maxilla and mandible transversely. This study aimed to evaluate the effects of the bonded rapid maxillary expander (RME) alone compared with RME with lip bumper (LB) treatment on the mandibular transverse changes. METHODS: This retrospective study analyzed 3 groups: the control group with no orthodontic or orthopedic treatment (23 patients [14 females, 9 males]; mean age 9.13 years at T1 and 11.24 years at T2); the RME group with no mandibular treatment (22 patients [9 females, 13 males]; mean age 8.73 years at T1 and 12.04 years at T2); and RME + LB group (23 patients [16 females, 7 males]; mean age 9.45 years at T1 and 12.18 years at T2). Three-dimensional superimposition of the mandibular images was performed with cone-beam computed tomography taken at prephase and postphase I treatment (growth and development check records for the control group) to conduct the angular and linear measurements at the dental, alveolar, and skeletal levels. The intergroup comparisons were performed using the Mann-Whitney U-test. RESULTS: Accompanying slight molar self-uprighting during the normal mandibular growth period observed in the control group, transverse growth was also observed in both alveolar and basal bone levels of the mandible, but no significant changes in the alveolar bone inclination occurred. The bonded RME slightly increased the mandibular first molar uprighting but not the mandibular widths at the tooth or alveolar levels. Adding a LB significantly increased the intermolar width and molar uprighting while decreasing the alveolar bone inclination but did not increase the amount of mandibular transverse growth at the bone level. CONCLUSIONS: RME alone did not significantly increase the transverse dimension of the mandible. RME + LB significantly increased mandibular intermolar width, uprighted the mandibular molars, and reduced the alveolar bone inclination.

Lip Bumper Therapy Does Not Influence the Sagittal Mandibular Incisor Position in a Retrospective CBCT Study.

Lip bumper (LB) therapy is used as a treatment approach for mild to moderate crowding without extraction of teeth. Previous studies demonstrated that LB increases arch length through molar uprighting and lateral expansion. However, the effects of LB on mandibular incisors are inconclusive. The controversial results from different studies may be due to limitations including absence of a control group and/or use of 2D radiography. To address this issue, the current retrospective longitudinal CBCT study compared a rapid maxillary expansion (RME) group with no lower treatment [16 patients (9 females, 7 males); median age 8.86 years at T1 and 11.82 years at T2] and an RME + LB group [18 patients (13 females, 5 males); median age 9.46 years at T1 and 12.10 years at T2]. The CBCTs taken before and after phase 1 treatment were 3D superimposed based on the mandibular structure and were measured to determine the angular and linear changes of the mandibular incisors over the course of LB treatment. For comparisons between different timepoints within a group, a Wilcoxon matched-pairs signed rank test was used. For intergroup comparisons, a Mann-Whitney U test was used. Both groups showed eruption and protrusion of the mandibular incisors during the observation period, while there was no significant change in proclination of the lower incisors. When comparing the discrepancy of change between groups, there was no statistically significant difference detected. In summary, by utilizing a longitudinal 3D database, the current study demonstrated that the effect of LB on the position of the mandibular incisors is limited.

Qualitative analysis of randomized controlled trials informing recommendations for venous thromboembolism prophylaxis after distal lower extremity injuries.

Purpose: The purpose of this study is to assess the quality of evidence to stratify recommendations for chemoprophylaxis following distal lower extremity trauma. Methods: Literature review identified primary studies investigating venous thromboembolism (VTE) chemoprophylaxis following traumatic injury distal to the knee. Inclusion criteria were randomized controlled trials in adult patients treated with and without operative intervention. Each primary study was assessed by the Consolidated Standards of Reporting Trials 2010 checklist and Modified Coleman methodology score. Results: Literature review resulted in 462 studies, of which 9 met inclusion and exclusion criteria. All studies included low molecular weight heparin as a treatment group with 2 (22%) also including a treatment group with a direct factor Xa inhibitor. Five studies (56%) used placebo as a control group. The mean Modified Coleman Methodology score was 63% (range 51%-72%), a categorical rating of Fair. The mean Consolidated Standards of Reporting Trials score was 78% (range 56%-97%). Most studies (89%) screened all asymptomatic subjects for deep venous thrombosis. Statistical significance in VTE incidence among prophylactic treatment groups was not achieved in 78%. Conclusions: Development of consensus for VTE prophylaxis recommendations following traumatic injury distal to the knee is complicated by heterogenous study populations, low incidence of VTE in study populations, and inconsistent definitions of clinically important VTE. Low molecular weight heparin is not consistently superior for preventing VTE. Chemoprophylaxis should be considered on an individual basis in the presence of additional risk factors, although an externally validated, evidence-based risk assessment tool does not currently exist.Level of Evidence: IV, therapeutic.

Occupational Outcomes and Return to Running After Operative Management of Lisfranc Injuries in a High-Demand Population.

Background: Literature evaluating outcomes following operative fixation of Lisfranc injuries has demonstrated high rates of chronic disability, particularly in those returning to prior levels of physical function. The purpose of this study is to evaluate the occupational outcomes and return to running after open reduction and internal fixation (ORIF) or arthrodesis for Lisfranc fracture-dislocations in a moderate- to high-demand military cohort. Methods: All active-duty servicemembers undergoing ORIF or primary arthrodesis (Current Procedural Terminology 28615 and 28730, respectively) for confirmed Lisfranc fracture-dislocations (International Classification of Diseases, Ninth Revision codes 838.03 or 838.13) with minimum 2-year follow-up were isolated from the Military Health System. Demographic and surgical variables were recorded. Return to military function, return to running, perioperative morbidity, and rates of reoperation for complication were the outcomes of interest. Univariate analysis followed by multivariate logistic regression determined the association between patient demographics, type of fracture fixation (ie, ORIF vs arthrodesis) and functional outcomes, including medical separation. Results: Among Lisfranc injuries, 64 patients underwent ORIF while 6 underwent primary arthrodeses with a mean age of 28.1 years. At mean follow-up of 3.5 years (range, 2.0-6.3 years), 20% of servicemembers underwent medical separation due to limitations related to their injuries. body mass index (BMI) ≥30 kg/m2 (OR 17.67; 95% CI, 3.69-84.53) and Army or Marines service branch (OR 3.86; 95% CI, 1.08-13.86) were significant independent predictors for medical separation. Among servicemembers undergoing ORIF or primary arthrodeses, 69% returned to occupationally required daily running during the follow-up period. Servicemembers with a BMI <30 kg/m2 were more likely to return to running (OR 13.14, 95% CI, 2.50-69.19). Radiographic evidence of posttraumatic Lisfranc osteoarthritis occurred in 10 (16%) servicemembers who underwent internal fixation, and 82% of ORIF patients underwent implant removal. Conclusions: At mean 3.5-year follow-up, 80% of servicemembers undergoing ORIF or primary arthrodeses for Lisfranc injuries remained on active duty or successfully completed their military service, and 69% were able to resume occupationally required daily running. Surgeons should preoperatively counsel patients with these injuries on the possibility of persistent long-term disability.Levels of Evidence: Level IV: Retrospective series.

Factors associated with return to duty and need for subsequent procedures after calcaneus open reduction internal fixation in the military.

INTRODUCTION: Calcaneus fractures can be devastating injuries, and operative treatment is fraught with complications. We are unaware of any studies evaluating all calcaneus fractures, both open and closed, treated operatively in the military. The purpose of this study is to evaluate all calcaneus fractures that required open reduction internal fixation to determine soldiers' ability to return to work and the need for additional surgeries. METHODS: All active-duty patients undergoing open reduction internal fixation of calcaneus fractures from 2010-2016 were identified utilizing the Military Health System Management Analysis and Reporting Tool (M2). Armed Forces Health Longitudinal Technology Application (AHLTA) was utilized to determine comorbid medical conditions, subsequent procedures, surgical outcomes, and duty status within the military. RESULTS: Three hundred seventy-five active-duty service members who met our inclusion/exclusion criteria were identified. One hundred fifty-one patients (55.1%) sustained their calcaneus fracture as a result of a blast injury. One hundred sixty (59.3%) patients required separation from the military as a result of their injury. Among patients who required a subsequent procedure, thirty-four patients (9.1%) required a subtalar arthrodesis, and thirty-two patients (8.5%) eventually required a below knee amputation. Blast as mechanism of injury was the single most predictive variable for patients requiring separation from the military (Odds Ratio 16.2, p< .001), requiring a subsequent procedure (Odds Ratio 8.4, p < .001), and for requiring a below knee amputation (Odds Ratio 47.3, p < .001). CONCLUSION: Calcaneus fractures treated operatively in the military are often caused by blast injuries, and have a high rate of requiring subsequent procedures, amputation, and separation from the military.

The Association of H-index and Academic Rank Among Full-time Academic Foot and Ankle Surgeons Affiliated with Fellowship Programs.

The purpose of this study is to investigate the association between Hirsch index (h-index) and academic rank among foot and ankle surgeons affiliated with American Orthopaedic Foot and Ankle Society (AOFAS) fellowship programs. The total number of publications, academic rank, years in practice, fellowship training pedigree, and h-indices of 176 foot and ankle surgeons from 48 AOFAS fellowship programs were recorded, and statistical analysis was performed. We found a strong association between total number of publications and h-index. Number of publications, h-index and training program affiliation were associated with higher academic rank, except at the chair/director position. Overall, h-index is a stronger predictor of academic rank than number of publications. The results of this study suggest that h-index and total number of publications are associated with a higher academic rank for full-time foot and ankle fellowship affiliated surgeons. (Journal of Surgical Orthopaedic Advances 31(4):263-267, 2022).

Suture Button versus Screw Fixation for Distal Tibiofibular Injury and Expected Value Decision Analysis.

Patient preference for fixation technique of syndesmotic injury in the presence of an ankle fracture is not known. This study followed a five-step process for expected value decision analysis: decision tree, outcome probabilities, expected patient values, foldback analysis, and sensitivity analysis. Outcome variables were "well" (cases that did not require further procedures or suffer any complications related to surgery), surgical site infection (SSI), loss of reduction (LOR), hardware removal (HWR), and malreduction. The systematic review included 22 studies including 358 patients who underwent suture button fixation and 739 who underwent screw fixation. Outcome probabilities for suture button fixation were 76.4% well, 6.2% SSI, 5.4% LOR, 10.4% HWR, and 1.6% malreduction. Outcome probabilities for screw fixation were 47.1% well, 4.3% SSI, 8.1% LOR, 30.7% HWR, and 9.8% malreduction. After the survey and foldback analysis, overall utility values for suture button and screw fixation were 7.46 and 4.78, respectively. One-way sensitivity analysis revealed that the overall utility value for suture button fixation was greater than the utility value of screw fixation under all circumstances except when the rate of malreduction for suture button fixation was theoretically elevated to 85%. Level of evidence: therapeutic, level IV.

Wartime Military Orthopaedics.

Military orthopaedic surgeons are faced with hardship and decreased morale. Surgeons have frequent deployments and practice inefficiencies resulting in poor retention rates. The purpose of this analysis is to report demographics and factors effecting military retention. A survey was sent to all members of the Society of Military Orthopedic Surgeons. The survey obtained demographic information, as well as factors affecting retention and termination of service. Data was compared between subset groups within the total respondent population. Of active-duty personnel, 38.5% plan on staying in the military until retirement. Most surgeons entered into the military due to a desire to serve their country, while most people leave service due to higher pay as a civilian. A minority of military orthopaedic surgeons achieve military retirement; however, increased pay, increased control over practice, and decreased frequency of deployments are factors that could improve retention rates. (Journal of Surgical Orthopaedic Advances 30(2):116-119, 2021).

Bone Morphogenetic Protein in Scaphoid Nonunion: A Systematic Review.

Background Scaphoid nonunion can lead to carpal collapse and osteoarthritis, a painfully debilitating problem. Bone morphogenetic protein (BMP) has been successfully implemented to augment bone healing in other circumstances, but its use in scaphoid nonunion has yielded conflicting results. Case Description The purpose of this study is to assess the outcomes and complications of scaphoid nonunion treated surgically with BMP. Literature Review A literature review of all available journal articles citing the use of BMP in scaphoid nonunion surgery from 2002 to 2019 was conducted. We included studies that used BMP as an adjunct to surgical treatment for scaphoid nonunions in both the primary and revision settings with computed tomography determination of union. Demographic information, dose of BMP, tobacco use, outcomes, and complications were recorded. A total of 21 cases were included from four different studies meeting inclusion criteria. Clinical Relevance The union rates were 90.5% overall, 100% for primary surgeries, and 77.8% for revision surgeries. Five patients (24%) experienced 11 complications, including four cases (19%) of heterotrophic ossification. Use of BMP in scaphoid nonunion surgery resulted in a 90.5% overall union rate but was also associated with complications such as heterotopic ossification. All included studies used BMP to augment bone graft, screw or wire fixation, or a combination of methods. The efficacy of BMP in scaphoid nonunion is unclear, and a sufficiently powered, randomized controlled trial is needed to determine optimal fixation methods, dosing, and morbidity of the use of BMP. Level of Evidence This is a Level IC, therapeutic interventional study.

Flexor Tendon Repair with Adjunctive Botulinum Toxin Administration: A Systematic Review.

Chemical denervation with Botulinum toxin has been proposed as an augment therapy to flexor tendon repairs to decrease complications including adhesions and re-rupture. We compiled and analyzed the results and complications for chemical denervation with Botulinum toxin in augmentation of flexor tendon repairs. Reviewed studies were from 1990-2018 and contained a minimum 3-month follow-up. A total of 26 patients were included in this review. All patients were reported to have excellent or good outcomes by the Strickland or Kleinert criteria. Complications were present in 9.3% of fingers including one with a flexion contracture, one with postoperative swelling, one with bowstringing, one with residual hypesthesia and first web contracture. Only one patient required re-operation. There were no cases of re-rupture or adhesions reported. All complications were unrelated to the use of Botulinum toxin. We conclude that Botulinum toxin therapy is a safe and efficacious augmentation to flexor tendon repair. (Journal of Surgical Orthopaedic Advances 30(1):036-039, 2021).

Supercharge End-to-Side Nerve Transfer: Systematic Review.

Background: To decrease the time to reinnervation of the intrinsic motor end plates after high ulnar nerve injuries, a supercharged end-to-side (SETS) anterior interosseous to ulnar motor nerve transfer has been proposed. The purpose of this study was to compile and review the indications, outcomes, and complications of SETS anterior interosseous to ulnar motor nerve transfer. Methods: A literature search was performed, identifying 73 papers; 4 of which met inclusion and exclusion criteria, including 78 patients. Papers included were those that contained the results of SETS between the years 2000 and 2018. Data were pooled and analyzed focusing on the primary outcomes: intrinsic muscle recovery and complications. Results: Four studies with 78 patients met inclusion and exclusion criteria. Most patients (33.3%) underwent SETS for an ulnar nerve lesion in continuity, the average age was 46.5 years, and the average follow-up was 10 months. The average duration of symptoms before surgery was 99 weeks, all patients had weakness and numbness, nearly all (96%) had atrophy, and half (53%) had pain. Grip and key pinch strength improved 202% and 179%, respectively, from the preoperative assessment. The vast majority (91.9%) recovered intrinsic function at an average of 3.7 months. Other than 8% of patients who did not recover intrinsic strength, no other complications were reported in any of the 78 patients. Conclusions: The SETS is a successful procedure with low morbidity, which may restore intrinsic function in patients with proximal nerve injuries.

Outcomes and Predictors of Postoperative Pain Improvement Following Particulated Juvenile Cartilage Allograft Transplant for Osteochondral Lesions of the Talus.

BACKGROUND: Particulated juvenile cartilage allograft transfer (PJCAT) is an emerging treatment option for management of osteochondral lesions of the talus (OCLTs). This series reports on outcomes and identifies predictors for success following PJCAT for isolated OCLTs. METHODS: We reviewed 33 consecutive patients who underwent PJCAT by a single surgeon from 2013 to 2017. Preoperative demographic factors (age, body mass index [BMI], tobacco use, behavioral health comorbidity, and ankle pain visual analog score [VAS]) and OCLT morphologic data were collected. Outcomes included postoperative improvements in VAS and American Orthopaedic Foot & Ankle Society (AOFAS) score and clinical success/failure. Results of 7 second-look arthroscopies and complications are provided. Categorical data are reported as frequencies, and statistical means with P values are reported for continuous variables. We had a mean 3.5 years of follow-up. RESULTS: Improvement in ankle pain VAS following isolated PJCAT was 51% (P < .001). For the first 16 consecutive patients in whom complete AOFAS scores were available, 40% (P < .001) improvement occurred. Presence of 1 or more behavioral health diagnoses was a risk factor for decreased pain relief, while moderate to severe preoperative pain (VAS >5.9) predicted improved postoperative pain relief. Age, BMI, tobacco use, and OCLT morphology did not affect outcomes. CONCLUSION: For treatment of large, high-stage OCLTs, PJCAT resulted in 40% to 50% improvement in ankle pain and disability within 3.5 years. The results may be better in patients with moderate to severe preoperative pain but worse in those with preexisting behavioral health diagnoses. LEVEL OF EVIDENCE: Level IV, retrospective case series.

Return to Weightbearing and High-Impact Activities Following Jones Fracture Intramedullary Screw Fixation.

BACKGROUND: Although the benefit of primary intramedullary (IM) screw fixation of fifth metatarsal Jones fractures in athletes is clear, limited data support its use in conventional patient populations. This study evaluated radiographic and functional outcomes following primary IM screw fixation in a series of Jones fractures to determine if similar excellent outcomes were achievable. METHODS: We reviewed the data of 32 consecutive patients who underwent Jones fracture primary IM screw fixation by a single surgeon. Demographic risk factors of interest (age, gender, tobacco use, pertinent medical comorbidities, military service status, and prior nonoperative management) were collected prospectively. Primary outcomes included times to return to full weightbearing, radiographic union, and resumption of high-impact or restriction-free activities. Complications including reoperations were recorded. Categorical data are reported as frequencies, and statistical means with P values are reported for continuous variables. Mean age for the 32 patients was 33.4 years. RESULTS: All 32 fractures healed uneventfully, and at mean follow-up time of 24.2 months, overall patient-reported satisfaction was 100%. Overall mean postoperative outcomes are as follows: 3.7 weeks return to full weightbearing, 10.8 weeks to radiographic union, and 13.0 weeks to resumption of restriction-free activities. Among the risk factors assessed, only preoperative peripheral vascular disease (PVD) and/or diabetes mellitus (DM) and active duty military service resulted in significantly increased and decreased time to resumption of restriction-free activities, respectively, but did not impact overall weightbearing or union times. Patient age, gender, and tobacco use had no effects on radiographic or functional outcomes. CONCLUSION: Primary IM screw fixation was a safe, reliable option for all appropriate operative candidates with Jones fractures and may result in similar early weightbearing, osseous healing, and expeditious return to full activities consistently reported in high-level athletes. LEVEL OF EVIDENCE: Level IV, case series.

Non-modifiable Risk Factors Associated with Avascular Necrosis in the US Military.

INTRODUCTION: Often referred to as aseptic or osteonecrosis, avascular necrosis (AVN) typically affects people between 30 and 50 years of age. Given the substantial morbidity associated with AVN as well as overlapping age groups of both the military and average age at diagnosis for AVN, the military represents an ideal cohort for a large database study to elicit the incidence and epidemiology of AVN. The purpose of this study was to identify demographic risk factors in the United States military. MATERIALS AND METHODS: First-time occurrences for ICD-9-CM codes for all types of AVN (head of humerus, head and neck of femur, medial femoral condyle, talus, and other bone) between 2004 and 2014 were queried in the Defense Medical Epidemiology Database. Multivariate data analysis was performed to obtain adjusted rate (adjusted for age, sex, race, rank, and branch of service). RESULTS: Between 2005 and 2014, 2,671 cases of AVN occurred among an at-risk population of 13,820,906 servicemembers for an unadjusted IR of 0.19 per 1,000 person-years. The most common location was located at the proximal femur, responsible for 41.7% of all cases. With an adjusted rate ratio of 18.7, the over 40 age-group accounted for 53.3% of cases. Servicemembers of black race, Senior rank, and the Army branch of service were more at risk for AVN. CONCLUSIONS: The overall incidence of AVN was 0.19 per 1,000 person-years. Whilte increasing age had the greatest influence on the development of symptomatic AVN, other statistically significant risk factors were found to be increasing age, black race, senior enlisted rank, and Army branch of service.

Capitolunate Arthrodesis: A Systematic Review.

PURPOSE: To compile and review the indications, outcomes, and complications of capitolunate arthrodesis (CLA). METHODS: We performed a literature search identifying 33 articles, 6 of which met inclusion criteria, including 80 patients. Included publications contained the results of CLA with minimum 12-month follow-up between 2000 and 2018. Data were pooled and analyzed focusing on the primary outcomes of union and complications. RESULTS: Average age of patients was 48 years (range, 22-86 years), median follow-up was 34 months (range, 12-198 months), and most common indication was scaphoid nonunion advanced collapse (59%). Nearly half underwent a concomitant triquetrum excision (49%). Most patients were pain-free (78%) and returned to work (92%). Grip strength and visual analog pain scale both improved after CLA. Whereas 96% fused within a reported 42 to 210 days (median, 70 days), 11% of patients had complications including nonunion (3.8%) and loose hardware (6.3%). The reoperation rate was 14%, including wrist arthrodeses and wrist arthroplasty. CONCLUSIONS: Capitolunate arthrodesis is a feasible option for scapholunate advanced collapse and scaphoid nonunion advanced collapse wrists with complications similar to those encountered in 4-corner arthrodesis. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Orthopaedic Residency Training Structure: Implications on Quantity and Quality of Scholarship.

The objective of this analysis was to compare the efficiency of scholarly activity withinmilitary orthopaedic training programs. The authors obtained the lists of abstracts accepted for presentation at the 2009 through 2014 Society of Military Orthopaedic Surgeons (SOMOS) annual meetings. Data were extracted for each individual presentation. Three primary groups were compared: a traditional program, a research program, and a hybrid program. The hybrid program produced the highest percentage of the presentations (28.6%). The traditional program contributed the most presentations (3.32) and publications (2.16) per resident and had the highest publication rate (87.7%) and the shortest time to publication (14.4 months). The research program published in the highest average impact journals (3.2). The addition of a research year does not improve the number of academic presentations or published papers but may improve the impact factor of the journals in which the projects are published. (Journal of Surgical Orthopaedic Advances 28(3):175-179, 2019).

Orthopaedic and Plastic Surgery Training Differences Manifested in the Analysis of Distal Radius Fracture Fixation.

All patients undergoing open reduction and internal fixation of a distal radius fracture (DRF) between the years 2010 and 2015 were isolated from the National Surgical Quality Improvement Program database. Patient demographics, respective surgical volume, outcome variables, and complications were extracted. The primary outcomes were surgical time, hospital length of stay, and unplanned reoperation. A total of 6691 patients were included in the study, the majority of whom were treated by orthopaedic surgeons. While there were no significant differences in baseline demographics between the patients treated by orthopaedic and plastic surgeons, the overall operative time was significantly less for DRFs fixed by orthopaedic surgeons. While there was a significant difference for extra-articular fractures, this difference increased significantly for complex intra-articular fractures. Additionally, hospital length of stay was significantly shorter for patients treated by orthopaedic surgeons. To produce well-rounded, technically skilled surgeons, plastic surgery programs should incorporate fixation principles into their training programs. (Journal of Surgical Orthopaedic Advances 28(1):53-57, 2019).

Outcomes of Triceps Rupture in the US Military: Minimum 2-Year Follow-up.

BACKGROUND: The objective of this study was to examine the subjective and objective midterm functional clinical outcomes of surgically repaired triceps injuries in a moderate- to high-demand population. METHODS: The US Military Health System was queried to identify all surgically treated triceps tendon ruptures between 2008 and 2013. Primary endpoints included rates of rerupture, perioperative complications, or significant persistent elbow dysfunction; Disability of the Arm, Shoulder and Hand (DASH) score, Mayo Elbow score, and ability to do push-ups were also extracted. RESULTS: Thirty-seven patients underwent triceps tendon repair with a mean follow-up of 49.8 ± 17.3 months (range: 26.8-80.2). The most common mechanisms of injury were military duties (27%), sporting activity (24%), or fall-related (21.6%), with most injuries occurring during an eccentric movement (54%). While 45% experienced occasional elbow pain postoperatively, only 1 patient (2.7%) had a rerupture. Despite this, at 2 years, 31 patients (84%) were able to return to full military duty. While 6 patients were discharged from military service, only 1 underwent medical separation while 5 retired for reasons unrelated to their triceps tendon rupture. Patient-reported outcomes were available for 14 patients at final follow-up. The average DASH and Mayo Elbow scores were 4.7 (SD ± 4.7, range: 0-15.9) and 85.4 (SD ± 11.7, range: 60-100), respectively. The cohort could perform mean 54.2 (range: 9-90) push-ups. In additional, 12 of 14 (85.7%) were satisfied with their elbow function. CONCLUSIONS: The active duty cohort experienced excellent postoperative results with a high rate of return to military duty, despite nearly half of the patients recognizing some degree of activity-related, elbow pain.

Perilunate Dislocations and Perilunate Fracture Dislocations in the U.S. Military.

Background Perilunate dislocations and perilunate fracture dislocations (PLDs/PLFDs) are rare and often associated with poor outcomes. Heretofore, these outcomes have not been evaluated in a high-demand military population. Questions/Purpose The purpose of this study was to evaluate the outcomes in a young, active population after sustaining PLD/PLFD injuries. Patients and Methods We retrospectively reviewed the U.S. military service members who underwent surgical treatment for a PLD/PLFD (Current Procedural Terminology codes 25695 and 25685) between June 1, 2010, and June 1, 2014 through the Military Health System Management Analysis and Reporting Tool (M2) database, capturing patients with a minimum 2-year follow-up. Patient characteristics and outcomes were gathered; however, radiographic analysis was not possible. Results In this study, 40 patients (40 wrists) were included with an average follow-up of 47.8 months. The average age was 28.8 years. Twenty-two injuries (55%) were PLFD and 22 (55%) cases involved the nondominant extremity. On initial presentation, 11 (27.5%) were missed and 50% of patients were presented with acute carpal tunnel syndrome. Range of motion (ROM) was 74% and grip strength was 65% compared with the contralateral wrist; 78% reported pain with activity and only 55% remained on active duty status at final follow-up. Injuries to the nondominant extremity were significantly more likely to experience a good to excellent outcome and regained a more ROM. Patients with ligamentous PLD had less pain at rest and were more likely to return to sport. Conclusion Worse outcomes can be expected for PLD/PLFD of the dominant extremity, transscaphoid PLFD, greater arc injuries, and those undergoing pinning alone. A high-demand patient may expect worse functional results with a higher degree of limitation postoperatively. Level of Evidence The level of evidence is therapeutic IV.