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Capitellum fractures are rare in adolescents, and information in literature is still limited. The purpose of this study was to report the mid-term and long-term functional and radiographic results of 13 surgically treated adolescent... more
Capitellum fractures are rare in adolescents, and information in literature is still limited. The purpose of this study was to report the mid-term and long-term functional and radiographic results of 13 surgically treated adolescent capitellum fractures in a level I trauma center. This retrospective study included patients aged 10 to 16 years, who underwent surgery for a capitellum fracture and were followed up for at least 12 months. Fractures were classified according to the McKee modification of the Bryan and Morrey classification, and elbow arthritis was classified using the Broberg and Morrey system. Functional outcomes were assessed with the Mayo Elbow Performance Index (MEPI) and the Turkish-language version of the shortened version of the Disabilities of Arm, Shoulder, and Hand (QuickDASH) scale. The mean time to surgical intervention was 4.5 days (range, 1 to 18 d). The mean flexion-extension range of motion arc was measured as 115 (range, 45 to 150) degrees. The mean restr...
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Fractures of the femur above a total knee arthroplasty (TKA) are becoming increasingly common in the osteoporotic, aging populations of developed countries. Treatment of these fractures is complicated by the presence of a knee prosthesis,... more
Fractures of the femur above a total knee arthroplasty (TKA) are becoming increasingly common in the osteoporotic, aging populations of developed countries. Treatment of these fractures is complicated by the presence of a knee prosthesis, frequently limiting the bone available for distal fracture fixation. The recent application of minimally invasive surgical techniques and locked plate technology to this problem offers the promise of stable, fixed-angle fixation of small distal fracture fragments with limited surgical exposure. The purpose of this study is to report the clinical and radiographic outcomes of fracture fixation using this technique in patients with periprosthetic femur fractures above TKA. Fifty-three patients presenting with periprosthetic femur fractures above a TKA were treated with osteosynthesis. One patient was lost to follow-up resulting in 52 patients with complete data. Thirty-four patients were treated with plate fixation and 18 patients underwent retrograde intramedullary nail fixation (RIMN). Using a comprehensive electronic medical record, we recorded data regarding patient-related demographics, nature of the fractures, the operative treatment, and clinical and radiographic outcomes for all patients treated with osteosynthesis. Successful fracture healing occurred in 75% of patients (39 of 52). Mean operating time was 91.6 ± 6.8 minutes in the RIMN group and 87.4 ± 6.4 minutes in the locked plating (LP) group (P = 0.46). Mean intraoperative blood loss was 182 ± 31.6 mL in the RIMN group and 177.5 ± 23.4 mL in the LP group (P = 0.91). The mean time to bone union was 3.7 ± 0.30 months in the RIMN group and 4.0 ± 0.27 months in the LP group (P = 0.95). The most common cause of treatment failure was patient death within 6 months (9 patients [17%]); three of 18 were treated with a nail and 6 of 34 with a plate (P = 1.0). In the LP group, three (9%) sustained fracture nonunions, three (9%) sustained fracture malunions, and two (6%) sustained surgical site infections. In the RIMN group, one (6%) failed to unite as a result of infection and two (11%) developed fracture malunions. There were no significant differences between patients treated with LP and those treated with RIMN. Despite significant advances in surgical technique and implant design, the treatment of periprosthetic femur fractures above a TKA remains a challenge. LP using an indirect reduction technique is applicable to most patients and prosthetic designs and can provide similar favorable results as compared with treatment with a RIMN in periprosthetic femoral fractures. Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
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The aim of this study is to describe the indications for two-portal hindfoot endoscopy in the treatment of posterior ankle compartment pathologies and to express the effectiveness of this technique by short- to mid-term outcomes on 59... more
The aim of this study is to describe the indications for two-portal hindfoot endoscopy in the treatment of posterior ankle compartment pathologies and to express the effectiveness of this technique by short- to mid-term outcomes on 59 consecutive patients. In our institute, between 2003 and 2009, patients operated by single surgeon with hindfoot endoscopy were enrolled. The American Orthopaedic Foot and Ankle Society (AOFAS) hindfoot and Maryland foot scores (MFS) were obtained preoperatively and postoperatively. In the final follow-up, besides the scores, patients were asked whether they were satisfied and whether they would elect this treatment again. The indications for 59 patients were posterior ankle impingement syndrome (14), osteochondral lesion of talus (13), isolated flexor hallucis longus (FHL) tenosynovitis (11), synovial osteochondromatosis (2), pigmented villonodular synovitis (2), peroneal tenosynovitis (4), subtalar joint arthrosis (4), tibiotalar arthrosis (4), intraosseous talus cyst (4; 1 bilateral), and talus fracture (1). FHL tendon was affected in all cases, and tenolysis was performed for each patient. The mean preoperative AOFAS-hindfoot scores increased from 56.7 ± 14.5 to 85.9 ± 12.5 (P < 0.0001), and the mean preoperative MFS increased from 54.8 ± 17.5 to 84.9 ± 15.9 (P < 0.0001), postoperatively. Four patients with posttraumatic arthritis were dissatisfied. Two sural nerve-related complications were identified. Hindfoot endoscopy was demonstrated to be a safe and effective procedure for the treatment of various hindfoot pathologies in this cohort, excluding patients with posttraumatic arthritis. Our results show that the prevalence of FHL tenosynovitis may be higher than previously reported and should always be considered in differential diagnosis of posteromedial ankle pain. Case series with no comparison group, Level IV.
Research Interests: Magnetic Resonance Imaging, Adolescent, Humans, Female, Male, and 15 moreArthroscopy, Differential Diagnosis, Clinical Sciences, Aged, Middle Aged, Adult, Retrospective Studies, Risk Assessment, Boolean Satisfiability, Ankle Joint, Pain Measurement, Cohort Studies, Recovery of Function, Joint diseases, and minimally invasive surgical procedures
Although knee dislocations are relatively rare injuries; associated drop foot complication as a consequence of common peroneal nerve palsy (CPN) is substantially high. Even after successful ligament constructions; unresolved CPN palsy is... more
Although knee dislocations are relatively rare injuries; associated drop foot complication as a consequence of common peroneal nerve palsy (CPN) is substantially high. Even after successful ligament constructions; unresolved CPN palsy is a factor contributing to bad outcome after knee dislocations. CPN palsy is seen more after open dislocations, rotatory dislocations, and especially in patients with posterolateral corner injuries. CPN palsy can readily be diagnosed clinically, although high index of suspicion is needed. Surgical exploration in the acute setting is still debatable. Conservative management can be appropriate in early phase of treatment, however surgery is the choice of treatment for persistent nerve damage. Neurolysis, primary nerve repair, nerve grafting, and posterior tibialis tendon transfer are all reasonable choices for surgical treatment. Late surgery results have an exceedingly low success. Tibialis posterior tendon transfer is indicated primarily in the setting of a drop foot and a steppage gait. Tibialis posterior tendon transfer procedures have had acceptable success in allowing patients to return to ambulation without assistive device.
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The purpose of this study is to define the clinical features and characteristics of radial tears in the root of the posterior horn of the medial meniscus and to report the outcome of arthroscopic treatment. Arthroscopic meniscus surgery... more
The purpose of this study is to define the clinical features and characteristics of radial tears in the root of the posterior horn of the medial meniscus and to report the outcome of arthroscopic treatment. Arthroscopic meniscus surgery was performed on 7,148 knees. Of those, 722 (10.1%) were radial tear in the root of the posterior horn of the medial meniscus. We reviewed the medical records from a random sample of 67 subjects studied (mean age 55.8 years, range 38-72, mean follow-up period 56.7 months, range, 8-123), which included surgical notes and detailed arthroscopic photographs of 70 knees. All patients were treated with arthroscopic partial meniscectomy. The age distribution, preoperative physical signs, results of magnetic resonance imaging , body mass index, and surgical findings of the study subjects were analyzed and the clinical results were graded with the Lysholm knee scoring scale and a questionnaire. Radiologic evaluation consisted of preoperative and at the latest follow-up radiographs. Eighty percent of the patients were older than 50 years, and 80.6% were either obese or morbidly obese. The mean Lysholm score improved from a preoperative value of 53 to a value of 67. The average preoperative Kellgren-Lawrence radiograph grade was 2 (range 0-3 points), a value that increased to 3 (range 2-4) at the latest follow-up, which showed a significant worsening. The preoperative MRI was reevaluated after the arthroscopic confirmation of a medial meniscal root tear. A tear could be demonstrated in only 72.9% of the patients, the rest of whom demonstrated degeneration and/or fluid accumulation at the posterior horn without a visible meniscal tear. Radial tears in the root of the medial meniscal posterior horn, which may not be visible in about one-third of the preoperative MRI scans, are common. That type of meniscal tear is strongly associated with obesity and older age and is morphologically different from the degenerative tears that often occur in the posterior horn. Partial meniscectomy provides symptomatic relief in most cases but does not arrest the progression of radiographically revealed osteoarthritis.
Research Interests: Magnetic Resonance Imaging, Osteoarthritis, Humans, Female, Male, and 15 moreArthroscopy, Body Mass Index, Risk factors, Clinical Sciences, Aged, Middle Aged, Adult, Random sampling, Knee injuries, Degeneration, Retrospective Studies, Risk Factors, Medical Records, Cohort Studies, and Magnetic resonance image
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Novel bone substitutes have challenged the notion of autologous bone grafting as the... more
Novel bone substitutes have challenged the notion of autologous bone grafting as the 'gold standard' for the surgical treatment of fracture nonunions. The present study was designed to test the hypothesis that autologous bone grafting is equivalent to other bone grafting modalities in the management of fracture nonunions of the long bones. A retrospective review of patients with fracture nonunions included in two prospective databases was performed at two US level 1 trauma centers from January 1, 1998 (center 1) or January 1, 2004 (center 2), respectively, until December 31, 2010 (n = 574). Of these, 182 patients required adjunctive bone grafting and were stratified into the following cohorts: autograft (n = 105), allograft (n = 38), allograft and autograft combined (n = 16), and recombinant human bone morphogenetic protein-2 (rhBMP-2) with or without adjunctive bone grafting (n = 23). The primary outcome parameter was time to union. Secondary outcome parameters consisted of complication rates and the rate of revision procedures and revision bone grafting. The autograft cohort had a statistically significant shorter time to union (198 ± 172-225 days) compared to allograft (416 ± 290-543 days) and exhibited a trend towards earlier union when compared to allograft/autograft combined (389 ± 159-619 days) or rhBMP-2 (217 ± 158-277 days). Furthermore, the autograft cohort had the lowest rate of surgical revisions (17%) and revision bone grafting (9%), compared to allograft (47% and 32%), allograft/autograft combined (25% and 31%), or rhBMP-2 (27% and 17%). The overall new-onset postoperative infection rate was significantly lower in the autograft group (12.4%), compared to the allograft cohort (26.3%) (P < 0.05). Autologous bone grafting appears to represent the bone grafting modality of choice with regard to safety and efficiency in the surgical management of long bone fracture nonunions.
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Novel bone substitutes have challenged the notion of autologous bone grafting as the... more
Novel bone substitutes have challenged the notion of autologous bone grafting as the 'gold standard' for the surgical treatment of fracture nonunions. The present study was designed to test the hypothesis that autologous bone grafting is equivalent to other bone grafting modalities in the management of fracture nonunions of the long bones. A retrospective review of patients with fracture nonunions included in two prospective databases was performed at two US level 1 trauma centers from January 1, 1998 (center 1) or January 1, 2004 (center 2), respectively, until December 31, 2010 (n = 574). Of these, 182 patients required adjunctive bone grafting and were stratified into the following cohorts: autograft (n = 105), allograft (n = 38), allograft and autograft combined (n = 16), and recombinant human bone morphogenetic protein-2 (rhBMP-2) with or without adjunctive bone grafting (n = 23). The primary outcome parameter was time to union. Secondary outcome parameters consisted of complication rates and the rate of revision procedures and revision bone grafting. The autograft cohort had a statistically significant shorter time to union (198 ± 172-225 days) compared to allograft (416 ± 290-543 days) and exhibited a trend towards earlier union when compared to allograft/autograft combined (389 ± 159-619 days) or rhBMP-2 (217 ± 158-277 days). Furthermore, the autograft cohort had the lowest rate of surgical revisions (17%) and revision bone grafting (9%), compared to allograft (47% and 32%), allograft/autograft combined (25% and 31%), or rhBMP-2 (27% and 17%). The overall new-onset postoperative infection rate was significantly lower in the autograft group (12.4%), compared to the allograft cohort (26.3%) (P < 0.05). Autologous bone grafting appears to represent the bone grafting modality of choice with regard to safety and efficiency in the surgical management of long bone fracture nonunions.
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Research Interests: Survival Analysis, China, Treatment Outcome, Comorbidity, Humans, and 15 moreFemale, Male, Risk factors, Clinical Sciences, Aged, Prevalence, Middle Aged, Survival Rate, Retrospective Studies, Postoperative Hemorrhage, Risk Factors, prosthesis Design, Bone Nails, Equipment Failure Analysis, and Orthopaedic Trauma
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Stemmed femoral implants are not universally used in revision total knee arthroplasty. The aim of this study was to evaluate whether the re-revision rate would be greater for revision total knees performed without stemmed femoral implants... more
Stemmed femoral implants are not universally used in revision total knee arthroplasty. The aim of this study was to evaluate whether the re-revision rate would be greater for revision total knees performed without stemmed femoral implants compared with revision total knees performed with stemmed femoral implants. All revision cases performed at a single institution between 2004 and 2011 were retrospectively reviewed. A total of 130 revision total knee arthroplasty procedures (63 Group 1; 67 Group 2) met the inclusion criteria. Revisions performed without femoral stems failed more often than revisions with femoral stems (44% vs 9%, p<0.001) despite more severe pre-operative bone loss in groups that were revised with stems (p<0.05). We recommend that femoral stems be used routinely in procedures where a femoral implant is revised following a prior total knee arthroplasty.
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To evaluate the healing rate, complications, role of reduction and screw placement, and the 1-year mortality in the treatment of reverse oblique and transverse intertrochanteric femoral fractures treated with the long cephalomedullary... more
To evaluate the healing rate, complications, role of reduction and screw placement, and the 1-year mortality in the treatment of reverse oblique and transverse intertrochanteric femoral fractures treated with the long cephalomedullary nail. Retrospective review. Two different Level-1 trauma centers: Geisinger Medical Center and the University of Utah. One hundred forty-eight patients with intertrochanteric fractures (AO/OTA class 31-A3) eligible for review. All patients had a minimum of 12 months of follow-up and were available for radiologic checks and assessment of outcomes and complications. Long cephalomedullary nail. Medical records were reviewed for reoperation, demographic parameters, length of hospital stay, estimated blood loss, and need for transfusion. Mortality rates at 1 month, 6 months, and 1 year were also recorded. Patients were followed clinically and radiographically at 6 weeks, 3 months, 6 months, 12 months, and yearly as needed. The average age of patients was 69.9 (range, 19-95) years. Average length of follow-up was 53 (range, 12-148) months. The average surgical time was 71.8 (range, 26-229) minutes. Twenty-four patients (16%) required blood transfusions, and the average transfusion required was 205.1 mL (range, 20-800). Five different long nail designs were used to treat the patients. One patient (0.6%) experienced an intraoperative complication. Eighteen patients (12%) sustained postoperative complications. Twelve (8%) patients required reoperations. One-year mortality rates were 10.1%. Long cephalomedullary nails remain the preferred treatment option for the treatment of 31-A3-type fractures, demonstrating acceptable complication rates, low reoperation rates, and high rates of healing. Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Bone bruises represent a spectrum of occult bone lesions around the knee, which can only be detected by magnetic resonance imaging. These lesions can be isolated or are usually associated with other soft tissue injuries of the knee. These... more
Bone bruises represent a spectrum of occult bone lesions around the knee, which can only be detected by magnetic resonance imaging. These lesions can be isolated or are usually associated with other soft tissue injuries of the knee. These occult lesions are mostly associated with anterior cruciate ligament (ACL) injuries and are typically located in the lateral femoral condyle and the posterolateral tibial plateau. The location of the lesion may provide information on the mechanism of injury and associated soft tissue injuries. Bone bruises are less severe after low-energy trauma and most of these lesions usually regress within a short period. However, in lesions due to high-energy trauma like ACL injuries, healing may take years and those especially located close to the subchondral bone have the risk of associated osteochondral sequelae. Bone bruises may be responsible for the late degenerative changes of the knee after an ACL injury.
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The treatment of interprosthetic femoral fractures is challenging because of several factors. Poor bone stock, advanced age, potential prosthetic instability, and limited fracture fixation options both proximally and distally can... more
The treatment of interprosthetic femoral fractures is challenging because of several factors. Poor bone stock, advanced age, potential prosthetic instability, and limited fracture fixation options both proximally and distally can complicate standard femur fracture treatment procedures. The purpose of this report was to describe our experience treating interprosthetic femoral fractures, providing an emphasis on treatment principles and specific intraoperative management. All patients with fractures occurring between ipsilateral hip and knee prostheses between 2004 and 2010 were identified from a comprehensive database and included in this study. Patients had been treated using principles adapted from two isolated periprosthetic fracture classification systems, the Vancouver and Su classifications. The electronic medical record (including inpatient medical records, operative notes, outpatient medical records, and all radiographs) was reviewed for each patient and demographic and treatment-related variables as well as complications and outcomes were recorded. Thirteen consecutive patients with interprosthetic fractures were included. Four fractures occurred around a clearly loose prosthesis, which were subsequently treated with long-stemmed revisions. The remaining 12 fractures were treated with a locked-plate construct. Two of nine patients (22.2%) died before fracture union. Follow-up averaged 28 months ± 4 months, with fracture union achieved at an average of 4.7 months ± 0.3 months. All patients returned to their self-reported preoperative ambulatory status except one who developed a loose hip prosthesis at 3-year follow-up after fracture union. The principles for treatment of isolated periprosthetic fractures are useful to guide the fixation of interprosthetic fractures. Locked plating is an effective method for the treatment of interprosthetic femoral fractures. Bypassing the adjacent prosthesis by a minimum of two femoral diameters is a necessary technique to prevent a stress riser.