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1.
J Hand Surg Am ; 48(8): 830.e1-830.e8, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-35400538

RESUMO

PURPOSE: Inconsistent outcomes have been reported in several prior studies of elderly patients with distal humerus fractures treated with open reduction and internal fixation (ORIF). We evaluated the outcomes of ORIF using modern precontoured plates exclusively in a parallel orientation. METHODS: A retrospective review was performed to identify the patients aged over 65 years who sustained an isolated distal humerus fracture between 2015 and 2019. We identified 22 patients who underwent distal humerus ORIF using parallel, precontoured locking plates. Electronic medical records were reviewed for demographic characteristics, physical examination findings, and radiographic data. Outcomes were assessed with Quick Disabilities of the Arm, Shoulder, and Hand scores and Mayo Elbow Performance scores. Complications were evaluated by a review of the patient's medical record and postoperative radiographs. RESULTS: Of the included patients, 18 were women and 4 were men; the average age was 78 years (SD, 8.5 years), and the patients were followed for an average of 33 months. The sample consisted of 19 AO type C, 1 type B, and 2 type A fractures. At the final follow-up, the mean arc of total elbow flexion was 107° (SD, 18.9°; range 40° to 130°), with mean elbow flexion of 129° (SD, 11.7°; range, 120° to 140°) and mean extension of 22° (SD, 12.9°; range 0° to 90°). The mean Quick Disabilities of the Arm, Shoulder, and Hand score was 19 (SD, 14.4), and the mean Mayo Elbow Performance score was 86 (SD, 10.2). Complications occurred in 5 (23%) patients, requiring 4 subsequent surgeries, of which 1 was a conversion to total elbow arthroplasty. CONCLUSIONS: Older patients who underwent ORIF of the distal humerus using a parallel construct demonstrated good functional outcomes and similar complications to those in previously reported studies. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.


Assuntos
Articulação do Cotovelo , Fraturas Distais do Úmero , Fraturas do Úmero , Idoso , Masculino , Humanos , Feminino , Resultado do Tratamento , Fraturas do Úmero/diagnóstico por imagem , Fraturas do Úmero/cirurgia , Articulação do Cotovelo/diagnóstico por imagem , Articulação do Cotovelo/cirurgia , Fixação Interna de Fraturas , Úmero , Estudos Retrospectivos , Amplitude de Movimento Articular , Placas Ósseas
2.
J Hand Surg Am ; 48(2): 165-176, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36333243

RESUMO

Hand and upper extremity (HUE) vascular disorders are encountered frequently by hand surgeons in clinical practice. A wide array of imaging and vascular interventional radiology modalities exists for the diagnosis and treatment of HUE vascular disorders, some of which may not be familiar to the HUE surgeons. In this review article, we summarize the vascular imaging and vascular interventional radiology modalities and their relative advantages, disadvantages, and indications with respect to HUE pathology. We aim to familiarize HUE surgeons with the available types of diagnostic and therapeutic options for HUE vascular pathologies and aid interdisciplinary communication with vascular interventional radiology specialists during the clinical decision-making process.


Assuntos
Cirurgiões , Doenças Vasculares , Humanos , Radiologia Intervencionista , Extremidade Superior/diagnóstico por imagem , Mãos/diagnóstico por imagem
3.
J Hand Surg Am ; 48(11): 1170.e1-1170.e7, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-36357225

RESUMO

PURPOSE: Nerves that are functionally injured but appear macroscopically intact pose the biggest clinical dilemma. Second Harmonic Generation (SHG) Microscopy may provide a real-time assessment of nerve damage, with the ultimate goal of allowing surgeons to accurately quantify the degree of nerve damage present. The aim of this study was to demonstrate the utility of SHG microscopy to detect nerve damage in vivo in an animal model. METHODS: Ten Sprague-Dawley rats were anesthetized and prepared for surgery. After surgical exposure and using a custom-made stretch applicator, the right median nerves were stretched by 20%, corresponding to a high strain injury, and held for 5 minutes. The left median nerve served as a sham control (SC), only being placed in the applicator for 5 minutes with no stretch. A nerve stimulator was used to assess the amount of stimulation required to induce a flicker and contraction of the paw. Nerves were then imaged using a multiphoton laser scanning microscope. RESULTS: Immediately after injury (day 0), SHG images of SC median nerves exhibited parallel collagen fibers with linear, organized alignment. In comparison with SC nerves, high strain nerves demonstrated artifacts indicative of nerve damage consisting of wavy, undulating fibers with crossing fibers and tears, as well as a decrease in the linear organization, which correlated with an increase in the mean stimulation required to induce a flicker and contraction of the paw. CONCLUSIONS: Second Harmonic Generation microscopy may provide the ability to detect an acute neural stretch injury in the rat median nerve. Epineurial collagen disorganization correlated with the stimulation required for nerve function. CLINICAL RELEVANCE: In the future, SHG may provide the ability to visualize nerve damage intraoperatively, allowing for better clinical decision-making. However, this is currently a research tool and requires further validation before translating to the clinical setting.


Assuntos
Nervo Mediano , Microscopia de Geração do Segundo Harmônico , Ratos , Animais , Ratos Sprague-Dawley , Colágeno , Nervos Periféricos
4.
Arthroscopy ; 38(2): 315-322, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34329701

RESUMO

PURPOSE: The purpose of this study was to investigate outcomes following arthroscopic elbow contracture release to describe the use of arthroscopy for improvement in extension/flexion and pronation/supination arcs of motion at a single institution for degenerative and posttraumatic etiologies. METHODS: Consecutive arthroscopic elbow arthrolysis performed between 2003 and 2015 were retrospectively reviewed. Basic patient demographics, indications for surgery, preoperative and postoperative elbow range of motion, postoperative patient outcome score, and all complications were recorded and analyzed. RESULTS: Fifty-two patients were included with an average follow-up of 5.1 years (range 1.4 to 9.4). Severe contractures made up 50% of cases, followed by 23% moderate, and 27% mild. Average extension/flexion for the post-traumatic group (n = 30) increased by 63° ± 31 and by 29° ± 24 for the degenerative group (n = 22). Average gain in pronosupination was 38° ± 62 in the post-traumatic group and 13°±23 in the degenerative group. Postoperative DASH scores were 17.5 ± 18.4 for post-traumatic cases and 12.8 ± 19.3 for degenerative cases. CONCLUSION: Arthroscopic elbow contracture release is an effective intervention for degenerative and post-traumatic elbow contracture for both flexion/extension and pronosupination contracture. Furthermore, a two-stage release should be considered when both flexion and pronosupinaton contractures are present. LEVEL OF EVIDENCE: IV, case series, treatment study.


Assuntos
Contratura , Articulação do Cotovelo , Artroscopia/efeitos adversos , Contratura/etiologia , Contratura/cirurgia , Cotovelo , Articulação do Cotovelo/cirurgia , Humanos , Amplitude de Movimento Articular , Estudos Retrospectivos , Resultado do Tratamento
5.
J Hand Surg Am ; 47(5): 482.e1-482.e10, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-34303567

RESUMO

PURPOSE: Nonsurgical distal radius fracture treatment requires immobilization and classical teaching suggests varying cast positions. We investigated the effect of cast position on the force and pressure experienced by the articular cartilage in the scaphoid and lunate fossae. METHODS: Ten fresh-frozen cadaveric specimens were used. A standardized extra-articular distal radius fracture was made. Force sensors were affixed to the articular cartilage of the scaphoid and lunate fossae. Baseline data were obtained. Specimens were then placed into a short arm cast with the wrist either neutrally aligned or flexed and ulnarly deviated (FUD). Specimens had a standard load applied, and a force profile was obtained. The cast was removed and the other cast type was placed and measurements were repeated. Overall force and pressure values were compared between baseline data and the 2 cast types. Additionally, differences in volar and dorsal scaphoid and lunate fossa forces and pressures were compared pairwise within the 2 cast types. The relative force and pressure values across cast types were also compared. RESULTS: Both cast types significantly reduced the median force and pressure experienced by the radiocarpal joint compared with no cast. In the FUD cast, the volar and dorsal lunate fossa experienced significantly greater force, and the dorsal lunate fossa experienced significantly greater pressure compared with the dorsal scaphoid fossa. There were no differences for any fossae in the neutral cast. When comparing between casts, the volar lunate fossa experienced a significantly greater relative force in the FUD cast compared with the neutral cast. CONCLUSIONS: Casting a distal radius fracture decreases the forces and pressures in the radiocarpal joint. Placing the wrist in a FUD position results in greater forces and pressures on the lunate fossa compared with the scaphoid fossa. CLINICAL RELEVANCE: When immobilization is needed, we advocate for the placement of patients in a relatively neutral short-arm cast with minimal FUD to avoid this increased pressure.


Assuntos
Osso Semilunar , Fraturas do Rádio , Osso Escafoide , Cadáver , Humanos , Rádio (Anatomia) , Fraturas do Rádio/cirurgia , Osso Escafoide/cirurgia , Articulação do Punho
6.
J Hand Surg Am ; 47(9): 902.e1-902.e6, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-34750047

RESUMO

PURPOSE: The flexor digitorum superficialis tendon to the little finger (FDS-5) has been observed to have a higher degree of functional and structural variation than the FDS of other digits. FDS-5-deficient individuals necessarily rely on the flexor digitorum profundus tendon to the little finger (FDP-5) for flexion in their little fingers. FDS-5 deficient patients who experience a considerable injury to their FDP-5 are therefore at a risk of losing substantial little finger flexion. The purpose of this study was to evaluate the degree of flexion of the little finger at the metacarpophalangeal and proximal interphalangeal (PIP) joints in a cadaveric model of FDS-5 deficiency following amputation of the distal phalanx. METHODS: Ten fresh-frozen cadaveric upper extremities with no prior trauma were used. Loads were applied to the FDP-5. Flexion at the PIP and metacarpophalangeal joints was measured in degrees with a goniometer. Little finger flexion testing was conducted under 5 different conditions: "baseline," "FDS-deficient," "no repair," "bone anchor" repair, and "A4 pulley" repair. RESULTS: The results were as follows: (1) no significant differences in the flexion between baseline and FDS-deficient conditions; (2) a significant decline in PIP flexion in the no repair condition after FDP-5 division compared with the FDS-deficient condition; (3) a significant restoration in PIP flexion in both surgical repair groups compared with the no repair group; and (4) no significant differences in PIP flexion between the A4 pulley and bone anchor groups. CONCLUSIONS: The bone anchor repair and the A4 pulley repair demonstrate similar abilities to restore flexion of the little finger at the PIP joint to baseline levels in this cadaveric model. CLINICAL RELEVANCE: A clinical protocol is yet to be established for the surgical treatment in FDS-5-deficient patients requiring amputation of the distal phalanx of the little finger. This study aims to address this area of uncertainty by comparing the little finger flexion after 2 different approaches to profundus tendon reattachment that may be applicable in this clinical scenario.


Assuntos
Falanges dos Dedos da Mão , Traumatismos dos Tendões , Amputação Cirúrgica , Cadáver , Falanges dos Dedos da Mão/cirurgia , Humanos , Traumatismos dos Tendões/cirurgia , Tendões/cirurgia
7.
J Hand Surg Am ; 44(2): 161.e1-161.e7, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30717829

RESUMO

PURPOSE: Current options for treating elbow instability include bony and/or ligamentous fixation with orthosis or cast immobilization, transarticular cross-pinning, temporary bridge plating, and hinged or rigid external fixation. Our purpose was to evaluate the recently developed internal joint stabilizer (IJS), which acts as an internal external fixator of the elbow. Our primary end point was to assess whether use of the device results in a stable and congruent reduction of the ulnohumeral and radiocapitellar joints in patients with acute or chronic elbow instability as a result of trauma. In our series, patients with elbow instability as a result of acute or chronic trauma were treated with an IJS. METHODS: This retrospective study reviewed 20 patients who underwent placement of a U.S. Food and Drug Administration (FDA)-approved IJS for elbow instability. Serial physical examinations and radiographs were performed to verify stability. Patients were instructed that, if they are dissatisfied with their postoperative motion, a secondary contracture release operation will be offered to them. Patients were asked to complete outcome-scoring questionnaires including the Disabilities of the Arm, Shoulder, and hand (DASH) and Mayo Elbow Performance (MEP) score. Complications were monitored for all patients. RESULTS: Twenty patients who underwent placement of an IJS for persistent elbow instability were reviewed. Patients with a flexion-extension arc of 70° or less at 12 weeks were offered a staged arthroscopic contracture release. The average MEP score improved from 12.2 ± 12.4 to 82.5 ± 14.3 and the average DASH score improved from 85.3 ± 23.0 to 37.26 ± 29.3. The average postoperative flexion-extension arc at most recent follow-up was 124.3° ± 14.9°, with a median follow-up of 17 months (8 weeks-25 months). CONCLUSIONS: Use of an IJS allows for early, congruent, and stable ulnohumeral and radiocapitellar range of motion in instances of persistent elbow instability. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.


Assuntos
Pinos Ortopédicos , Articulação do Cotovelo/cirurgia , Fixadores Internos , Luxações Articulares/cirurgia , Instabilidade Articular/cirurgia , Adolescente , Adulto , Idoso , Avaliação da Deficiência , Articulação do Cotovelo/diagnóstico por imagem , Feminino , Humanos , Luxações Articulares/diagnóstico por imagem , Instabilidade Articular/etiologia , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Radiografia , Amplitude de Movimento Articular , Estudos Retrospectivos , Adulto Jovem , Lesões no Cotovelo
8.
J Shoulder Elbow Surg ; 28(4): e125-e130, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30639173

RESUMO

BACKGROUND: Musculoskeletal injuries of the upper extremity are frequently treated with temporary external immobilization. Traditionally, long arm posterior splints have been used to limit flexion/extension of the elbow. However, long arm posterior splints have been observed to fail clinically, necessitating a stronger alternative. In this study, we assessed the biomechanical strength of the long arm posterior splint compared with a new spiral splint design. METHODS: One male and one female participant were placed 10 times in long arm posterior splints and 10 times in spiral splints. Both splint types were subjected to a downward mechanical load of 39.2 N (4 kg) and assessed for a change in both flexion/extension and pronation/supination. RESULTS: There was no significant difference in starting position or starting flexion/extension between the 2 splint designs. Posterior splints allowed significantly greater initial pronation/supination compared with spiral splints. Both splint groups had significant increases in flexion/extension and pronation/supination compared with their starting ranges of motion. There was no significant difference in the change in pronation/supination between the 2 splint groups. Finally, posterior splints allowed a significantly greater change in flexion/extension compared with spiral splints. CONCLUSION: Spiral splints offered less initial pronation/supination than long arm posterior splints. Furthermore, spiral splints are able to resist flexion/extension of the elbow after application of a downward mechanical load better than posterior splints, thus suggesting spiral splints are mechanically superior to long arm posterior splints.


Assuntos
Articulação do Cotovelo/fisiologia , Desenho de Equipamento , Antebraço/fisiologia , Contenções , Fenômenos Biomecânicos , Feminino , Humanos , Masculino , Teste de Materiais , Pronação , Amplitude de Movimento Articular , Supinação
9.
Surg Radiol Anat ; 41(10): 1187-1192, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31264001

RESUMO

PURPOSE: Wikipedia is a popular online encyclopedia generating over 5.4 billion visits per month, and it is also a common resource for the general public and professionals for medical information. The goal of this study is to determine the accuracy and completeness of Wikipedia as a resource for musculoskeletal anatomy. METHODS: The origin, insertion, innervation, and function of all muscles of the upper and lower extremities as detailed on Wikipedia was compared to the available corresponding information in Grant's Atlas of Anatomy (14th edition). Entries were scored for both accuracy and completeness. Descriptive statistics were calculated and associations between and within entries for accuracy and completeness were assessed by McNemar's tests. Information on Wikipedia's references was also collected. RESULTS: Overall, data on Wikipedia was 97.6% complete and 98.8% accurate when compared to Grant's Atlas of Anatomy. 78.6% of all entries were fully complete and accurate, with 15.3% of entries containing one error and 6.1% containing two errors. There were no associations between or within entries' accuracy and completeness. Only 62% of references from Wikipedia included were from academic sources. CONCLUSIONS: Musculoskeletal anatomy entries on Wikipedia are imperfect; they have inaccurate and missing information. Furthermore, a considerable proportion of references cited in entries are from poorly identified sources. While Wikipedia is an easily accessible resource for a large number of people and much of the anatomic information is appropriate, it cannot be considered to be an equivalent resource when compared to anatomic texts.


Assuntos
Anatomia Artística/estatística & dados numéricos , Enciclopédias como Assunto , Internet/estatística & dados numéricos , Ilustração Médica , Sistema Musculoesquelético/anatomia & histologia , Confiabilidade dos Dados , Humanos
10.
J Shoulder Elbow Surg ; 27(3): 393-397, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-29195898

RESUMO

BACKGROUND: Tension-band wiring is largely considered the gold standard for fixation of displaced olecranon fractures despite high rates of hardware complications. The purpose of this study was to report the outcomes of displaced olecranon fractures treated with the Olecranon Sled. METHODS: We retrospectively reviewed all displaced olecranon fractures from 2011-2015 treated with the Olecranon Sled. Inclusion was limited to functionally independent patients with Mayo type II fractures and minimum 12-month follow-up. We assessed clinical outcomes including range of motion; Disabilities of the Arm, Shoulder and Hand score; and Mayo Elbow Performance Score. RESULTS: Twenty-two patients with a mean follow-up period of 31.8 months (range, 12-71 months) were included in the study. All patients indicated satisfactory outcomes. The mean Mayo Elbow Performance Score was 95.5 (range, 70-100), and the mean Disabilities of the Arm, Shoulder and Hand score was 3.1 (range, 0-18.3). The mean total arc of elbow flexion was 145° (range, 134°-158°), and the mean total arc of forearm rotation was 175° (range, 160°-180°). There were no hardware-related complications. The overall complication rate was 4.5% (1 of 22) as significant heterotopic ossification developed in 1 patient, requiring contracture release. CONCLUSION: The Olecranon Sled is a reliable and well-tolerated implant for the treatment of olecranon fractures. This device results in excellent functional outcomes and may obviate hardware removal.


Assuntos
Placas Ósseas , Fios Ortopédicos , Fixação Interna de Fraturas/métodos , Olécrano/lesões , Amplitude de Movimento Articular/fisiologia , Fraturas da Ulna/cirurgia , Articulação do Cotovelo/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Olécrano/diagnóstico por imagem , Olécrano/cirurgia , Estudos Retrospectivos , Fraturas da Ulna/diagnóstico
11.
J Shoulder Elbow Surg ; 27(7): 1317-1325, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29678397

RESUMO

BACKGROUND: Recently, there has been growing interest in the involvement of the posterior bundle of the medial ulnar collateral ligament (pMUCL) in varus posteromedial rotatory instability (PMRI). Varus PMRI has been observed clinically, but the degree of involvement of the pMUCL remains unclear. This study assessed the degree to which the pMUCL is involved in stabilizing the elbow and the feasibility of a pMUCL reconstruction to restore stability. METHODS: Movements simulating PMRI were performed in 8 cadaveric elbows. Joint gapping values were obtained by 3-dimensional motion capture for the proximal and distal aspects of the ulnohumeral joint. Specimens were assessed at "intact," "cut coronoid + pMUCL," "reconstruction," and "cut anterior aspect MUCL + reconstruction" conditions with mechanical testing at 30°, 60°, and 90° of elbow flexion. RESULTS: Proximal joint gapping significantly increased from intact to cut coronoid + pMUCL at 60° and 90°, and distal joint gapping significantly increased at 90°. In the reconstruction condition, joint gapping across the proximal joint at 60° and 90° significantly recovered, as did distal joint gapping at 90°. In the cut anterior aspect MUCL + reconstruction condition, no significant increase occurred in proximal or distal joint gapping. CONCLUSIONS: Transection of the pMUCL with a coronoid fracture leads to increased joint gapping, suggesting the presence of PMRI. PMRI can still occur with an intact lateral ligamentous complex. A pMUCL tendon graft reconstruction confers some elbow stability in this injury mechanism.


Assuntos
Articulação do Cotovelo/cirurgia , Instabilidade Articular/cirurgia , Reconstrução do Ligamento Colateral Ulnar , Fenômenos Biomecânicos , Cadáver , Ligamentos Colaterais/cirurgia , Articulação do Cotovelo/patologia , Articulação do Cotovelo/fisiopatologia , Humanos , Instabilidade Articular/diagnóstico , Instabilidade Articular/fisiopatologia , Amplitude de Movimento Articular , Ulna/fisiopatologia , Ulna/cirurgia
12.
J Pediatr Orthop ; 38(9): e507-e513, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29965934

RESUMO

BACKGROUND: Elbow contracture is a sequelae of elbow trauma in pediatric patients. Arthroscopic contracture release has been shown to provide equivalent results to open contracture release with less associated morbidity and complications in the adult population. However, open contracture release is still commonly utilized in pediatric patients. The goal of this study is to determine the clinical results and safety profile of arthroscopic elbow contracture release in the pediatric population. METHODS: A retrospective review of all patients 18 years of age and younger who underwent arthroscopic elbow contracture release was performed. Demographic statistics, indication for surgery, preoperative and postoperative flexion-extension and pronation-supination range of motion, and all complications were recorded and analyzed. RESULTS: Twenty-five patients were identified as having undergone 29 arthroscopic elbow contracture releases. The most common index injury was elbow contracture after radial head fracture. The flexion-extension arc of motion improved from 93.0±39.9 degrees to 128.0±19.2 degrees for a total improvement of 35.2 degrees (P=0.0002), whereas the pronation-supination arc of motion improved from 141.0±58.6 degrees to 153±49.3 degrees for a total improvement of 12.2 degrees (P=0.097). There were 7 total complications. CONCLUSIONS: Arthroscopic elbow contracture release allows for restoration of range of motion with an acceptable safety profile and can be considered as a less invasive alternative to open contracture release in the pediatric population. LEVEL OF EVIDENCE: Level IV.


Assuntos
Artroscopia , Contratura/cirurgia , Lesões no Cotovelo , Articulação do Cotovelo/cirurgia , Liberação da Cápsula Articular/métodos , Complicações Pós-Operatórias/cirurgia , Amplitude de Movimento Articular , Adolescente , Artroscopia/efeitos adversos , Criança , Contratura/etiologia , Articulação do Cotovelo/fisiopatologia , Feminino , Humanos , Masculino , Fraturas do Rádio/cirurgia , Estudos Retrospectivos
13.
J Hand Surg Am ; 42(8): 666.e1-666.e5, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28410939

RESUMO

Venous sclerotherapy is an emerging cosmetic treatment option for dorsal hand varicose veins. Although venous sclerotherapy is considered a safe and effective procedure for treatment of venous malformations and varicosities in both the upper and lower extremities, inadvertent injection of the sclerosing agent into the arterial system has led to reported instances of acute ischemic events and distal limb necrosis. This is a rare but well-documented complication of lower-extremity venous sclerotherapy. Only 2 cases have been reported in upper-extremity venous sclerotherapy, both of which occurred during treatment of complex vascular malformations. We report an instance of acute, distal digit ischemia after elective venous sclerotherapy for a dorsal hand varicosity. As this procedure grows in popularity, it is essential for hand surgeons to be aware of this rare but potentially devastating complication.


Assuntos
Mãos/irrigação sanguínea , Isquemia/etiologia , Escleroterapia/efeitos adversos , Varizes/terapia , Feminino , Humanos , Isquemia/diagnóstico , Isquemia/terapia , Pessoa de Meia-Idade
14.
J Shoulder Elbow Surg ; 26(10): 1862-1866, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28844419

RESUMO

BACKGROUND: Elbow arthroscopy is a minimally invasive means by which to treat a variety of acute and chronic elbow conditions. Although the safety and efficacy is well documented in the adult population, comparatively little information is available about the role of elbow arthroscopy in the pediatric population. This study reports the indications for and safety of elbow arthroscopy in a series of pediatric patients. METHODS: A retrospective review was performed from 2001 to 2015 of a surgical database at a single institution. All elbow arthroscopies performed in patients aged 18 years and younger were reviewed. Indications for surgery, perioperative and postoperative complications, further surgical intervention, and descriptive demographic information were recorded. RESULTS: We identified 64 elbow arthroscopic procedures in 59 patients. The average age at the time of surgery was 11.8 years. Indications for the arthroscopic surgery included contracture release (45.3%), closed reduction and fixation for fracture (20.3%), treatment of osteochondritis dissecans (20.3%), diagnostic arthroscopy (7.8%), and débridement (6.3%). The overall complication rate was 17.2%, with a major and minor complication rate of 6.3% and 10.9%, respectively. CONCLUSION: Elbow arthroscopy has applications in the pediatric population with an acceptable safety profile. The techniques and indications continue to evolve.


Assuntos
Artroscopia , Articulação do Cotovelo , Artropatias/cirurgia , Adolescente , Fatores Etários , Criança , Bases de Dados Factuais , Desbridamento , Feminino , Humanos , Masculino , Seleção de Pacientes , Complicações Pós-Operatórias , Estudos Retrospectivos
15.
J Shoulder Elbow Surg ; 25(6): 1020-6, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26952286

RESUMO

BACKGROUND: Using a validated database, 30-day complications of primary and revision total elbow arthroplasty (TEA) were analyzed to identify risk factors of adverse events. METHODS: Primary and revision TEAs from 2007 to 2013 were identified in the National Surgical Quality Improvement Program database. Bivariate and multivariate analyses of risk factors for 30-day adverse events were assessed using preoperative and intraoperative variables. RESULTS: The study reviewed 189 primary and 53 revision TEA patients. Fracture (34%), osteoarthritis (24%), and rheumatoid arthritis (23%) were the most common indications for TEA. Adverse event rate was similar in primary and revision TEA (12% vs. 15%; P = .49), and infectious complications occurred in 3.2% of primary TEAs and 7.5% of revision TEAs (P = .23). Bivariate analysis of risk factors for 30-day adverse events identified dependent functional status in primary TEA (P = .03) and age in revision TEA (P = .02). Multivariate analysis of primary TEA revealed that adverse events were significantly less likely with rheumatoid arthritis compared with osteoarthritis etiology (odds ratio, 0.15; P = .02), and smoking was associated with an increased chance of infection (odds ratio, 6.96; P = .03). Revision TEA was not associated with an increased 30-day adverse event or infection rate compared with primary TEA in multivariate analysis. Among primary and revision TEA patients, dependent functional status (P = .02) and hypertension (P = .04) were independent predictors for adverse events. CONCLUSION: Modifiable risk factors should be addressed before TEA to limit postoperative complications as well as cost. The risk of short-term complications after revision TEA is comparable to that of primary TEA.


Assuntos
Artroplastia de Substituição do Cotovelo/efeitos adversos , Infecções/etiologia , Complicações Pós-Operatórias/etiologia , Reoperação/efeitos adversos , Adulto , Idoso , Idoso de 80 Anos ou mais , Artrite Reumatoide/cirurgia , Bases de Dados Factuais , Feminino , Nível de Saúde , Humanos , Hipertensão/complicações , Masculino , Pessoa de Meia-Idade , Osteoartrite/cirurgia , Fatores de Risco , Fumar/efeitos adversos , Resultado do Tratamento
16.
J Shoulder Elbow Surg ; 25(5): 797-801, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26948003

RESUMO

BACKGROUND: Poor positioning of patients can result in devastating permanent neurologic deficits. We describe a previously unreported cause of median nerve compression that we have termed the brachialis syndrome, associated with patient positioning that results in permanent median nerve damage. METHODS: We identified this condition affecting 6 median nerves. All patients underwent surgical decompression of the proximal median nerve at the level of the antecubital fossa. RESULTS: Five patients presented with symptoms of median nerve compression; 6 affected median nerves manifested brachialis syndrome after a lengthy index surgery. Every patient had a similar presentation characterized by a mixed sensory and motor deficit. Average time to symptom presentation postoperatively was 1 hour. Two patients had delayed time to decompression, one of 25 days and one of 92 days. In the additional patients, the average time to decompression was 19.7 hours. At median nerve decompression, the brachialis was found to have varying degrees of muscle necrosis. In the patients whose decompression was delayed, there was only partial neurologic recovery at follow-up to 1 year. In the patients expeditiously decompressed, full neurologic recovery occurred in 1 to 14 days. CONCLUSIONS: This is the first description of the brachialis syndrome. During surgery, arms were placed into full extension, compressing the brachialis against the trochlea. The brachialis reliably developed necrosis, resulting in swelling, compressing the median nerve against the lacertus fibrosus. Two patients with delayed decompression had poor neurologic outcomes. This supports modification of patient positioning, postoperative vigilance, and timely surgical management of brachialis syndrome.


Assuntos
Cotovelo , Neuropatia Mediana/etiologia , Músculo Esquelético/patologia , Síndromes de Compressão Nervosa/etiologia , Posicionamento do Paciente/efeitos adversos , Adolescente , Adulto , Descompressão Cirúrgica , Feminino , Humanos , Masculino , Neuropatia Mediana/cirurgia , Pessoa de Meia-Idade , Músculo Esquelético/cirurgia , Necrose/etiologia , Síndromes de Compressão Nervosa/cirurgia , Período Pós-Operatório , Estudos Retrospectivos , Tempo para o Tratamento , Resultado do Tratamento , Adulto Jovem
17.
Methods ; 66(2): 246-55, 2014 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-23962836

RESUMO

Second harmonic generation (SHG) imaging of the peripheral nerve using multi-photon microscopy is a novel technique with little documentation. It affords the significant possibility of non-destructive imaging of internal nerve anatomy. The nature of nerve tissue, especially its size and viscoelastic properties, present special challenges for microscopy. While nerves are under an innate in situ strain, they retract once dissected, thus distorting microscopic structure. The challenge is to preserve the nerve in its natural strain range to obtain images that most truly reveal its structure. This study examined backscattered SHG images of rat median nerve prepared by several different methods to compare image quality and content. Nerve segments were fixed under strained (constant load or length) and unstrained conditions and imaged as whole nerve as well as plastic (methyl methacrylate) and paraffin embedded sections. These were tested for optimal excitation wavelength, quantitative image contrast, and overall quality. Root mean squared (RMS) contrast proved to be a reliable measure of the level of image contrast perceived by eye. We concluded that images obtained from tissue sections (plastic and paraffin) provided the most accurate and revealing SHG images of peripheral nerve structure. Removing the embedding material prior to imaging significantly improved image quality. Optimal excitation wavelengths were consistent regardless of the preparation method.


Assuntos
Colágenos Fibrilares/ultraestrutura , Nervos Periféricos/ultraestrutura , Animais , Feminino , Microscopia Confocal/métodos , Microtomia , Inclusão em Parafina , Inclusão em Plástico , Ratos , Ratos Sprague-Dawley
18.
J Shoulder Elbow Surg ; 24(10): 1607-12, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26234666

RESUMO

HYPOTHESIS: We hypothesize that a technique for all-arthroscopic fixation of capitellum osteochondritis dissecans (OCD) lesions using suture fixation and autogenous iliac crest bone grafting offers a successful alternative to open internal fixation techniques as shown by 2-year validated patient-reported outcomes. METHODS: Our technique uses arthroscopic all-inside suture fixation with iliac crest autogenous bone grafting. The procedure was performed on 4 elite-level, adolescent athletes presenting with 5 unstable capitellum OCD lesions resulting in elbow pain, limited range of motion, and decreased ability to play. Magnetic resonance imaging showed an unstable OCD lesion, which was correlated with arthroscopy. Postoperatively, patients were evaluated by the short version of the Disabilities of the Arm, Shoulder and Hand questionnaire; Oxford Elbow and Mayo Elbow scores; visual analog scale; postoperative range of motion; and return to play. RESULTS: Three female patients and one male patient aged 13 to 15 years underwent the procedure. The mean final follow-up period was 2.8 years. Union was achieved in all patients, as seen on magnetic resonance imaging at a mean of 3 months. At follow-up, the mean loss of extension was 2°. Mean flexion was 153°. There was no loss of supination or pronation. The mean score on the short version of the Disabilities of the Arm, Shoulder and Hand questionnaire was 11. The mean Mayo Elbow score was 88. The mean Oxford Elbow score was 42. The mean visual analog scale score was 2. The mean time to return to play was 4 months. All patients continued to compete at an elite level. There were no infections or cases of fixation failure, and no patients required conversion to open surgery or needed revision surgery. CONCLUSION: Arthroscopic all-inside fixation of unstable OCD lesions is a successful technique, facilitating athletes to return to an elite level of play.


Assuntos
Artroscopia/métodos , Articulação do Cotovelo/fisiopatologia , Articulação do Cotovelo/cirurgia , Osteocondrite Dissecante/cirurgia , Adolescente , Artralgia/etiologia , Transplante Ósseo , Feminino , Seguimentos , Humanos , Imageamento por Ressonância Magnética , Masculino , Osteocondrite Dissecante/complicações , Osteocondrite Dissecante/fisiopatologia , Pronação , Amplitude de Movimento Articular , Volta ao Esporte , Supinação , Inquéritos e Questionários , Técnicas de Sutura , Resultado do Tratamento
19.
J Hand Surg Am ; 39(12): 2534-41, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25459959

RESUMO

The elbow's complex anatomy and synergism of bony and ligamentous stabilizers make physical examination challenging. Adequate elbow assessment is essential for accurate diagnosis and initiating proper treatment. Isolated elbow injuries are rare; fractures should be interpreted as proxies for associated, often unappreciated, soft tissue injuries. A careful elbow examination informs the need for and interpretation of radiological studies, including fluoroscopy, magnetic resonance imaging, and computed tomography scanning.


Assuntos
Lesões no Cotovelo , Articulação do Cotovelo/anatomia & histologia , Cotovelo/anatomia & histologia , Artropatias/diagnóstico , Lesões dos Tecidos Moles/diagnóstico , Diagnóstico por Imagem , Humanos , Exame Físico , Amplitude de Movimento Articular
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