REASSESSMENT OF FATTY INFILTRATION BY MAGNETIC RESONANCE TEN YEARS AFTER ROTATOR CUFF INJURY REPAIR.

Quantitative assessments of rotator cuff muscle changes after successful tendon repair are scarce. On the other hand, semiquantitative and subjective assessments are more abundant, but their findings are controversial. One hypothesis about this divergence is that there is an immediate decrease in the proportion of fatty infiltration after surgical repair. Objective: Reassess fatty infiltration and muscle trophism of the rotator cuff after ten years of repair. Methods: Prospective comparison study. A total of 10 patients diagnosed with rotator cuff injury underwent repair of the lesion, and MRI of the affected shoulder was performed in the preoperative, immediate postoperative, and late postoperative periods (ten years). A comparative study was performed at every moment. Results: At 5% significance level, the mean of the immediate postoperative period was higher for the variable trophism and true muscle percentage. Fatty infiltration showed no difference in the three periods observed. Conclusion: Fatty infiltration does not change in the three periods evaluated and muscle trophism is greater in the immediate postoperative period. After ten years of rotator cuff repair, muscle trophism and fatty infiltration remain with statistically significantly equal results when compared to the preoperative period. Level of Evidence II, Prospective Comparison Study.

Avaliações quantitativas das mudanças musculares do manguito rotador após reparos bem-sucedidos são escassas. Em contrapartida, avaliações semiquantitativas e subjetivas são mais abundantes, porém com achados controversos. Uma hipótese sobre essa discrepância é que a diminuição imediata na proporção de gordura que ocorre logo após o reparo. Objetivo: Reavaliar a infiltração gordurosa e o trofismo muscular do manguito rotador passados dez anos do reparo. Métodos: Estudo prospectivo comparativo realizado com dez pacientes diagnosticados com lesão do manguito rotador que foram submetidos a reparo da lesão e exames de ressonância magnética do ombro acometido no pré-operatório, no pós-operatório imediato e no pós-operatório tardio (dez anos), a fim de comparar as mudanças musculares em cada momento. Resultados: Ao nível de significância de 5%, a média do pós-operatório imediato foi superior para as variáveis trofismo e porcentagem muscular verdadeira. A infiltração gordurosa não apresentou diferença nos três períodos observados. Conclusão: A infiltração gordurosa não se altera nos três períodos avaliados, e o trofismo muscular é maior no pós-operatório imediato. Após dez anos do reparo do manguito rotador, o trofismo muscular e a infiltração gordurosa se mantêm com resultados estatísticos significativamente iguais quando comparados com o pré-operatório. Nível de Evidência II, Estudo Prospectivo Comparativo.

Allograft-enhanced latissimus dorsi transfer is better than the conventional technique for irreparable posterosuperior rotator cuff tears. A retrospective matched cohort.

PURPOSE: Latissimus dorsi tendon (LDT) transfer (LDTT) to the greater tuberosity to treat irreparable posterosuperior rotator cuff tears (RCTs) in young active patients has been shown to have up to 36% of clinical failures, most of them happening because of either deltoid origin disruption or post-operative transfer rupture from the greater tuberosity. In an attempt to simultaneously prevent both complications, a modified technique includes the following adaptations to the original technique: reinforcement and augmentation of the LDT with a tendinous allograft, enabling the use of a single deltopectoral approach. The aim of this study is to compare mid-term outcomes of the traditional LDTT technique with this modified transfer. METHODS: Retrospective cohort study comparing two groups who underwent either the traditional (group 1; n = 19) or the modified technique (group 2; n = 27). Group homogenization was assured by statistical comparison of 24 baseline independent variables. The outcome variables were the gains to active shoulder range of motions (ROM) and UCLA scores (and all its subscores, independently), at a minimum follow-up of two years. A p value < .05 was considered to be statistically significant. RESULTS: At a mean follow-up of 25 months, both groups have shown improvements to most variables. However, group two (modified technique) achieved greater improvements to UCLA score (p = .009), active external rotation (p = .006) and internal rotation (p = .008). CONCLUSION: At mid-term follow-up, improvements to outcomes of the modified (single approach, allograft-enhanced) latissimus dorsi transfer were greater than those of the original technique.

Reassessment of fatty infiltration by magnetic resonance ten years after rotator cuff injury repair / Reavaliação da infiltração gordurosa por ressonância magnética após dez anos de reparo de lesão do manguito rotador

ABSTRACT Quantitative assessments of rotator cuff muscle changes after successful tendon repair are scarce. On the other hand, semiquantitative and subjective assessments are more abundant, but their findings are controversial. One hypothesis about this divergence is that there is an immediate decrease in the proportion of fatty infiltration after surgical repair. Objective: Reassess fatty infiltration and muscle trophism of the rotator cuff after ten years of repair. Methods: Prospective comparison study. A total of 10 patients diagnosed with rotator cuff injury underwent repair of the lesion, and MRI of the affected shoulder was performed in the preoperative, immediate postoperative, and late postoperative periods (ten years). A comparative study was performed at every moment. Results: At 5% significance level, the mean of the immediate postoperative period was higher for the variable trophism and true muscle percentage. Fatty infiltration showed no difference in the three periods observed. Conclusion: Fatty infiltration does not change in the three periods evaluated and muscle trophism is greater in the immediate postoperative period. After ten years of rotator cuff repair, muscle trophism and fatty infiltration remain with statistically significantly equal results when compared to the preoperative period. Level of Evidence II, Prospective Comparison Study.

RESUMO Avaliações quantitativas das mudanças musculares do manguito rotador após reparos bem-sucedidos são escassas. Em contrapartida, avaliações semiquantitativas e subjetivas são mais abundantes, porém com achados controversos. Uma hipótese sobre essa discrepância é que a diminuição imediata na proporção de gordura que ocorre logo após o reparo. Objetivo: Reavaliar a infiltração gordurosa e o trofismo muscular do manguito rotador passados dez anos do reparo. Métodos: Estudo prospectivo comparativo realizado com dez pacientes diagnosticados com lesão do manguito rotador que foram submetidos a reparo da lesão e exames de ressonância magnética do ombro acometido no pré-operatório, no pós-operatório imediato e no pós-operatório tardio (dez anos), a fim de comparar as mudanças musculares em cada momento. Resultados: Ao nível de significância de 5%, a média do pós-operatório imediato foi superior para as variáveis trofismo e porcentagem muscular verdadeira. A infiltração gordurosa não apresentou diferença nos três períodos observados. Conclusão: A infiltração gordurosa não se altera nos três períodos avaliados, e o trofismo muscular é maior no pós-operatório imediato. Após dez anos do reparo do manguito rotador, o trofismo muscular e a infiltração gordurosa se mantêm com resultados estatísticos significativamente iguais quando comparados com o pré-operatório. Nível de Evidência II, Estudo Prospectivo Comparativo.

EVALUATION OF SCAPULAR DYSKINESIS IN CROSSFIT®- PRACTICING ATHLETES.

Objective: Evaluate the scapular movement of Crossfit® practitioners and identify whether they present an increased incidence of scapular dyskinesis (SD) compared to non-practitioners. Method: A transversal study was evaluated quantitatively and dynamically, using retro-reflective spherical markers, the scapular movements of ten volunteers composing the control group, and 11 Crossfit® practitioners. The control group's results were used as a normality parameter and compared to those of the Crossfit® practitioner's group. Results: It was identified that the superior scapular rotation in the ascending phase is inferior in the group of Crossfit® practitioners (p = 0.02). Conclusion: The regular practice of Crossfit® causes scapular dyskinesis (SD), with alteration in the scapular superior rotation movement. Level of Evidence III: Retrospective comparative .

Objetivo: Avaliar o movimento escapular de praticantes de Crossfit® e identificar se apresentam incidência aumentada de discinese escapular (DE) quando comparados a não praticantes. Método: Estudo transversal que avaliou de forma quantitativa e dinâmica, utilizando marcadores retro-refletivos esféricos, os movimentos escapulares de dez voluntários, compondo o grupo controle, e 11 praticantes de Crossfit®. Os resultados do grupo controle foram utilizados como parâmetro de normalidade e comparados aos do grupo de praticantes de Crossfit®. Resultados: Identificou-se que a rotação superior escapular na fase ascendente é inferior no grupo de praticantes de Crossfit® (p = 0,02). Conclusão: A prática regular de Crossfit® causa discinese escapular (DE), com alteração no movimento de rotação superior da escápula. Nível de Evidência III: Retrospectivo comparativo .

Detection of Cutibacterium acnes in Tissue Samples from Primary Clean Shoulder Surgeries - Part I.

Objective The present study aimed to identify bacterial agents in shoulder surgery specimens from patients with no history of previous shoulder infection or surgery. Methods Tendon, bursa, and bone specimens were collected during surgery, stored in sterile dry bottles, and sent to a hospital-associated laboratory for culture growth analysis in media for aerobic and anaerobic agents. Findings from 141 samples from 47 shoulders were analyzed. Results The cultures were negative in 46 cases (97.8%) and in 140 samples (99.2%). The culture was positive in a single patient, with growth of Staphylococcus hominis from one of three specimens collected. Conclusions The rates of bacterial growth were not consistent with the international literature, indicating the low effectiveness of laboratory methods used in Brazil.

Results of Latissimus Dorsi Transfer using a Tendinous Allograft through a Single Deltopectoral Approach for Irreparable Posterosuperior Rotator Cuff Tears.

Objective The primary aim of the present study is to evaluate the functional results of a modification to the latissimus dorsi (LD) transfer around the shoulder for irreparable posterosuperior rotator cuff tears. The secondary aim is to evaluate variables that might influence the outcomes. Surgical Technique Through a single deltopectoral approach, the LD tendon is detached, reinforced, and elongated with a tendinous allograft, transferred around the humerus, and fixed superolaterally to the greater tuberosity and anteriorly to the subscapularis. Methods Retrospective functional evaluation of 16 cases. The average follow-up was 21 months (12-47). The postoperative results (at last follow-up) were compared with the preoperative ones, as well as to other pre, intra, and postoperative variables. Results All (but one) patients were satisfied. Average University of California, Los Angeles (UCLA) score increased from 11.6 (8-16) to 27.3 (17-30) ( p < 0.001). Improvements of shoulder pain, function, and strength achieved statistical significance ( p < 0.001). Nonetheless, normal strength was never restored. Average active range of motion improved as follows: forward elevation, from 106° (60-140°) to 145° (130-160°) ( p < 0.001); external rotation from 30° (0° to 60°) to 54° (40-70°) ( p < 0.001); and internal rotation from L1 (gluteus to T7) to T10 (T12-T3) ( p < 0.05). No complication has occurred. Preoperative pseudoparesis was reverted in all the six cases in which it was present. None of the variables analyzed influenced the outcomes, including pseudoparesis. Conclusions At early follow-up, this technique is safe and effective at recovering from pseudoparesis and at improving shoulder pain, function, and strength.

Detection of Cutibacterium acnes in Tissue Samples from Primary Clean Shoulder Surgeries - Part I / Detecção de Cutibacterium acnes em amostras de tecidos de cirurgias limpas primárias do ombro - Parte I

Abstract Objective The present study aimed to identify bacterial agents in shoulder surgery specimens from patients with no history of previous shoulder infection or surgery. Methods Tendon, bursa, and bone specimens were collected during surgery, stored in sterile dry bottles, and sent to a hospital-associated laboratory for culture growth analysis in media for aerobic and anaerobic agents. Findings from 141 samples from 47 shoulders were analyzed. Results The cultures were negative in 46 cases (97.8%) and in 140 samples (99.2%). The culture was positive in a single patient, with growth of Staphylococcus hominis from one of three specimens collected. Conclusions The rates of bacterial growth were not consistent with the international literature, indicating the low effectiveness of laboratory methods used in Brazil.

Resumo Objetivo Identificar agentes bacterianos em amostras de cirurgias do ombro de pacientes sem histórico de infecção e de cirurgias prévias no ombro. Métodos Amostras de tendão, bursa e osso foram coletadas no intraoperatório, armazenadas em frascos estéreis a seco e enviadas para análise de crescimento de cultura em meios para agentes aeróbios e anaeróbios no laboratório credenciado ao hospital. Foram analisados os resultados de 141 amostras de 47 ombros. Resultados Obtivemos resultados de culturas negativas em 46 casos (97,8%) e em 140 amostras (99,2%). Apenas um paciente apresentou resultado positivo, com crescimento bacteriano do Staphylococcus hominis em uma das três amostras coletadas. Conclusões Não evidenciamos taxas de crescimento bacteriano condizentes com a literatura internacional, alertando para a baixa eficácia dos métodos laboratoriais utilizados no nosso país.

Results of Latissimus Dorsi Transfer using a Tendinous Allograft through a Single Deltopectoral Approach for Irreparable Posterosuperior Rotator Cuff Tears / Resultados da transferência do grande dorsal alongado com enxerto tendíneo homólogo por via delto-peitoral para lesões póstero-superiores irreparáveis do manguito rotador

Abstract Objective The primary aim of the present study is to evaluate the functional results of a modification to the latissimus dorsi (LD) transfer around the shoulder for irreparable posterosuperior rotator cuff tears. The secondary aim is to evaluate variables that might influence the outcomes. Surgical Technique Through a single deltopectoral approach, the LD tendon is detached, reinforced, and elongated with a tendinous allograft, transferred around the humerus, and fixed superolaterally to the greater tuberosity and anteriorly to the subscapularis. Methods Retrospective functional evaluation of 16 cases. The average follow-up was 21 months (12-47). The postoperative results (at last follow-up) were compared with the preoperative ones, as well as to other pre, intra, and postoperative variables. Results All (but one) patients were satisfied. Average University of California, Los Angeles (UCLA) score increased from 11.6 (8-16) to 27.3 (17-30) (p< 0.001). Improvements of shoulder pain, function, and strength achieved statistical significance (p< 0.001). Nonetheless, normal strength was never restored. Average active range of motion improved as follows: forward elevation, from 106° (60-140°) to 145° (130-160°) (p< 0.001); external rotation from 30° (0° to 60°) to 54° (40-70°) (p< 0.001); and internal rotation from L1 (gluteus to T7) to T10 (T12-T3) (p< 0.05). No complication has occurred. Preoperative pseudoparesis was reverted in all the six cases in which it was present. None of the variables analyzed influenced the outcomes, including pseudoparesis. Conclusions At early follow-up, this technique is safe and effective at recovering from pseudoparesis and at improving shoulder pain, function, and strength.

Resumo Objetivo O objetivo primário do presente trabalho é avaliar os resultados funcionais de uma modificação na transferência do grande dorsal no ombro para o tratamento de lesões póstero-superiores irreparáveis do manguito rotador. O objetivo secundário é avaliar as variáveis que podem influenciar os resultados. Técnica cirúrgica Por meio de uma única abordagem deltopeitoral, o tendão do músculo grande dorsal é desinserido reforçado e alongado com um enxerto tendíneo homólogo, transferido para o úmero e fixado em posição superolateral ao tubérculo maior e anterior ao músculo subescapular. Métodos Avaliação funcional retrospectiva de 16 casos. O período médio de acompanhamento foi de 21 meses (12-47 meses). Os resultados pós-operatórios (no último acompanhamento) foram comparados aos pré-operatórios, bem como a outras variáveis pré, intra e pós-operatórias. Resultados Todos os pacientes ficaram satisfeitos (exceto um). A pontuação média da University of California, Los Angeles (UCLA) aumentou de 11,6 (8-16) para 27,3 (17-30) (p< 0,001). A dor, a função e a força do ombro apresentaram melhora estatisticamente significativa (p< 0,001). A força, porém, não voltou ao valor normal. A amplitude de movimento ativa média apresentou as seguintes melhoras: elevação frontal, de 106° (60-140°) para 145° (130-160°) (p< 0,001); rotação externa, de 30° (0-60°) para 54° (40-70°) (p< 0,001); e rotação interna, de L1 (glúteo a T7) para T10 (T12-T3) (p< 0,05). Nenhuma complicação foi observada. A pseudoparesia pré-operatória foi revertida em todos os seis casos em que foi observada. Nenhuma das variáveis analisadas influenciou os desfechos, nem mesmo a pseudoparesia. Conclusões A curto prazo essa técnica é segura e eficaz na recuperação da pseudoparesia e na melhora da dor, da função e da força do ombro.

Evaluation of scapular dyskinesis in crossfit®- practicing athletes / Avaliação da discinese escapular em atletas praticantes de crossfit®

ABSTRACT Objective Evaluate the scapular movement of Crossfit® practitioners and identify whether they present an increased incidence of scapular dyskinesis (SD) compared to non-practitioners. Method A transversal study was evaluated quantitatively and dynamically, using retro-reflective spherical markers, the scapular movements of ten volunteers composing the control group, and 11 Crossfit® practitioners. The control group's results were used as a normality parameter and compared to those of the Crossfit® practitioner's group. Results It was identified that the superior scapular rotation in the ascending phase is inferior in the group of Crossfit® practitioners (p = 0.02). Conclusion The regular practice of Crossfit® causes scapular dyskinesis (SD), with alteration in the scapular superior rotation movement. Level of Evidence III: Retrospective comparative.

RESUMO Objetivo Avaliar o movimento escapular de praticantes de Crossfit® e identificar se apresentam incidência aumentada de discinese escapular (DE) quando comparados a não praticantes. Método Estudo transversal que avaliou de forma quantitativa e dinâmica, utilizando marcadores retro-refletivos esféricos, os movimentos escapulares de dez voluntários, compondo o grupo controle, e 11 praticantes de Crossfit®. Os resultados do grupo controle foram utilizados como parâmetro de normalidade e comparados aos do grupo de praticantes de Crossfit®. Resultados Identificou-se que a rotação superior escapular na fase ascendente é inferior no grupo de praticantes de Crossfit® (p = 0,02). Conclusão A prática regular de Crossfit® causa discinese escapular (DE), com alteração no movimento de rotação superior da escápula. Nível de Evidência III: Retrospectivo comparativo.

Comparative Clinical Evaluation of Two Techniques of Arthroscopic Treatment of Partial Articular Rotator Cuff Tears.

Objectives To evaluate the clinical results of patients submitted to arthroscopic treatment of partial lesion of the articular part of the rotator cuff by transtendon suture techniques and after completing the lesion and to compare the postoperative recovery time of the two techniques. Method Retrospective study based on the identification of all cases with partial lesion of the articular part of the rotator cuff submitted to arthroscopic treatment from October 1999 to December 2016 at the Shoulder and Elbow Group of our institution. Thirty-nine patients were included and divided into two groups: those who underwent the transtendon technique and those in whom the lesion was completed. The two groups were statistically similar. The respective medical records were analyzed as well as the identification of the applied technique, the postoperative results, and the related complications. The functional evaluation was performed using the score of the University of California at Los Angeles (UCLA). Results There was no statistically relevant difference between the groups, with a mean UCLA score of 32, and no difference in the time required for rehabilitation. Conclusion There was no difference between the clinical outcome of the patients, regardless of the technique used to repair the partial lesions of the articular part of the rotator cuff, with satisfactory results in 93% of the cases.

Comparative Clinical Evaluation of Two Techniques of Arthroscopic Treatment of Partial Articular Rotator Cuff Tears / Avaliação clínica comparativa de duas técnicas no tratamento artroscópico das lesões parciais articulares do manguito rotador

Abstract Objectives To evaluate the clinical results of patients submitted to arthroscopic treatment of partial lesion of the articular part of the rotator cuff by transtendon suture techniques and after completing the lesion and to compare the postoperative recovery time of the two techniques. Method Retrospective study based on the identification of all cases with partial lesion of the articular part of the rotator cuff submitted to arthroscopic treatment from October 1999 to December 2016 at the Shoulder and Elbow Group of our institution. Thirty-nine patients were included and divided intotwo groups: those who underwent the transtendon technique and those in whom the lesion was completed. The two groups were statistically similar. The respective medical records were analyzed as well as the identification of the applied technique, the postoperative results, and the related complications. The functional evaluation was performed using the score of the University of California at Los Angeles (UCLA). Results There was no statistically relevant difference between the groups, with a mean UCLA score of 32, and no difference in the time required for rehabilitation. Conclusion There was no difference between the clinical outcome of the patients, regardless of the technique used to repair the partial lesions of the articular part of the rotator cuff, with satisfactory results in 93% of the cases.

Resumo Objetivos Avaliar os resultados clínicos dos pacientes submetidos ao tratamento artroscópico da lesão parcial da porção articular do manguito rotador pelas técnicas de sutura transtendão e após completada a lesão e comparar o tempo de recuperação pósoperatório das duas técnicas. Método Estudo retrospectivo baseado na identificação de todos os casos com lesão parcial da porção articular do manguito rotador submetidos a tratamento artroscópico no período de outubro de 1999 a dezembro de 2016 pelo Grupo de Ombro e Cotovelo da nossa instituição. Foram incluídos 39 pacientes divididos em 2 grupos: os que foram submetidos à técnica transtendínea e os outros em que a lesão foi completada. Os dois grupos foram estatisticamente semelhantes. Foi realizada a análise dos respectivos prontuários, da identificação da técnica aplicada, dos resultados pós-operatórios e das complicações relacionadas. A avaliação funcional foi realizada através do escore da University of California at Los Angeles (UCLA). Resultados Não houve diferença estatisticamente relevante entre os grupos, com escore UCLA médio de 32, não havendo diferença também no tempo necessário para reabilitação. Conclusão Não houve diferença entre o resultado clínico dos pacientes, independente da técnica empregada para o reparo das lesões parciais da porção articular do manguito rotador com resultados satisfatórios em 93% dos casos.

Current Options in Tendon Transfers for Irreparable Posterosuperior Rotator Cuff Tears.

Massive irreparable posterosuperior rotator-cuff tears are debilitating lesions that usually require surgical treatment. Even though there is no consensus regarding the best surgical technique, tendinous transfers around the shoulder are the most commonly performed procedures. The latissimus dorsi tendon remains the most commonly used, but different modifications to the original technique have been shown to minimize complications and to improve functional results and satisfaction. Other techniques, such as the transfer of the lower trapezius tendon, are promising and should be considered, especially for patients with isolated loss of external rotation. The present paper is a literary review regarding tendon transfers for irreparable posterosuperior rotator-cuff tears.

Current Options in Tendon Transfers for Irreparable Posterosuperior Rotator Cuff Tears / Opções atuais de transferências tendíneas para lesões posterossuperiores irreparáveis do manguito rotador

Abstract Massive irreparable posterosuperior rotator-cuff tears are debilitating lesions that usually require surgical treatment. Even though there is no consensus regarding the best surgical technique, tendinous transfers around the shoulder are the most commonly performed procedures. The latissimus dorsi tendon remains the most commonly used, but different modifications to the original technique have been shown to minimize complications and to improve functional results and satisfaction. Other techniques, such as the transfer of the lower trapezius tendon, are promising and should be considered, especially for patients with isolated loss of external rotation. The present paper is a literary review regarding tendon transfers for irreparable posterosuperior rotator-cuff tears.

Resumo As grandes lesões posterossuperiores irreparáveis do manguito rotador são debilitantes e, de modo geral, requerem tratamento cirúrgico. Embora não haja consenso sobre a melhor técnica cirúrgica, as transferências tendíneas no ombro são os procedimentos mais realizados. O tendão do grande dorsal continua a ser o mais utilizado, mas diferentes modificações na técnica original têm minimizado as complicações e melhorado os resultados funcionais e a satisfação com o procedimento. Outras técnicas, como a transferência do tendão do trapézio inferior, são promissoras e devem ser consideradas, principalmente em pacientes com perda isolada da rotação externa. Este artigo é uma revisão da literatura a respeito da transferência de tendões para tratamento das lesões posterossuperiores irreparáveis do manguito rotador.

Humeral Head Osteonecrosis: Outcomes of Hemiarthroplasty After Minimum 10-Year Follow-Up.

Objective To analyze long-term functional and radiographic results of partial shoulder replacement for humeral head osteonecrosis. Methods Retrospective review of thirteen cases, with a mean postoperative follow-up of 17 years (range 10 to 26 years). The findings from the last follow-up were compared to those in which the patients had one year of postoperative follow-up. Functional assessment consisted of shoulder movement measurements and application of the University of California, Los Angeles (UCLA) shoulder score. All patients underwent radiographic examination to measure glenoid erosion, proximal humeral migration and lateral glenohumeral dislocation. Results Glenoid erosion increased over time significantly ( p < 0.05). Paradoxically, all active shoulder movements also improved ( p < 0.05), while UCLA scores remained the same. Radiographic deterioration was not correlated with clinical function. We had an 84.7% survival rate for arthroplasties after a mean time of 16 years. Conclusions Early functional outcomes were maintained in the long run and do not correlate with radiographic deterioration (increased erosion of the glenoid).

Humeral Head Osteonecrosis: Outcomes of Hemiarthroplasty After Minimum 10-Year Follow-Up / Osteonecrose da cabeça do úmero: Avaliação dos resultados da artroplastia parcial com seguimento mínimo de 10 anos

Abstract Objective To analyze long-term functional and radiographic results of partial shoulder replacement for humeral head osteonecrosis. Methods Retrospective review of thirteen cases, with a mean postoperative follow-up of 17 years (range 10 to 26 years). The findings from the last follow-up were compared to those in which the patients had one year of postoperative follow-up. Functional assessment consisted of shoulder movement measurements and application of the University of California, Los Angeles (UCLA) shoulder score. All patients underwent radiographic examination to measure glenoid erosion, proximal humeral migration and lateral glenohumeral dislocation. Results Glenoid erosion increased over time significantly (p < 0.05). Paradoxically, all active shoulder movements also improved (p < 0.05), while UCLA scores remained the same. Radiographic deterioration was not correlated with clinical function. We had an 84.7% survival rate for arthroplasties after a mean time of 16 years. Conclusions Early functional outcomes were maintained in the long run and do not correlate with radiographic deterioration (increased erosion of the glenoid).

Resumo Objetivo Analisar os resultados funcionais e radiográficos de longo prazo da artroplastia parcial do ombro para estosteonecrose da cabeça do úmero. Métodos Revisão retrospectiva de 13 casos, com seguimento pós-operatório médio de 17 anos (variação de 10 a 26 anos). Os achados do último seguimento foram comparados àqueles em que os pacientes tinham com 1 ano de acompanhamento pós-operatório. A avaliação funcional consistiu em medidas do movimento do ombro e aplicação do escore do ombro da Universidade da Califórnia, Los Angeles (UCLA). Todos os pacientes foram submetidos a exame radiografico para medir a erosão glenoidal, a migração umeral proximal, e o deslocamento glenoumeral lateral. Resultados A erosão da glenoide aumentou com o tempo significativamente (p < 0,05). Paradoxalmente, todos os movimentos ativos do ombro também melhoraram (p < 0,05), enquanto os escores da UCLA permaneceram os mesmos. A deterioração radiográfica não teve correlação com a função clínica. Tivemos uma taxa de sobrevida de 84,7% das artroplastias após tempo médio de 16 anos. Conclusões Os resultados funcionais precoces mantiveram-se a longo prazo e não se correlacionem com a deterioração radiográfica (aumento da erosão glenoidal).

Latissimus Dorsi Tendon Transfer using Tendinous Allograft for Irreparable Rotator Cuff Lesions: Surgical Technique.

Latissimus dorsi transfer around the shoulder is the most frequently used surgical technique to treat young patients with irreparable posterosuperior rotator cuff lesions. This technique, as initially described and popularized by Gerber et al., has two main drawbacks that may predispose to complications and unsatisfactory functional results: 1) postoperative rupture of the origin of the deltoid, as its detachment from the acromion is necessary during the superior approach to the shoulder; and 2) postoperative rupture of the transferred tendon. In an attempt to avoid these problems, the authors have developed the following modifications to the original technique. Through a deltopectoral approach, the latissimus dorsi tendon is identified and detached from the humerus shaft. After being reinforced and elongated with a tendinous allograft, it is transferred around the humerus and fixed to the superolateral aspect of the greater tubercle. No rigid thoraco-brachial immobilization is used postoperatively.

Latissimus Dorsi Tendon Transfer using Tendinous Allograft for Irreparable Rotator Cuff Lesions: Surgical Technique / Transferência tendínea do grande dorsal com enxerto tendíneo homólogo para as lesões irreparáveis do manguito rotador: técnica cirúrgica

Abstract Latissimus dorsi transfer around the shoulder is the most frequently used surgical technique to treat young patients with irreparable posterosuperior rotator cuff lesions. This technique, as initially described and popularized by Gerber et al., has two main drawbacks thatmay predispose to complications and unsatisfactory functional results: 1) postoperative rupture of the origin of the deltoid, as its detachment from the acromion is necessary during the superior approach to the shoulder; and 2) postoperative rupture of the transferred tendon. In an attempt to avoid these problems, the authors have developed the following modifications to the original technique. Through a deltopectoral approach, the latissimus dorsi tendon is identified and detached from the humerus shaft. After being reinforced and elongated with a tendinous allograft, it is transferred around the humerus and fixed to the superolateral aspect of the greater tubercle. No rigid thoraco-brachial immobilization is used postoperatively.

Resumo No contexto do tratamento cirúrgico dos pacientes jovens com lesões irreparáveis da porção posterossuperior do manguito rotador, a técnica mais usada é a transferência do tendão do grande dorsal para a porção superolateral do tubérculo maior, conforme descrita e preconizada por Gerber et al. Entretanto, duas características dessa técnica podemlevar a resultados ruins e complicações: (i) a deiscência da origem do deltoide, que ocorre devido à sua violação durante a criação da via em golpe de sabre e (ii) a ruptura pós-operatória da inserção da transferência. Na tentativa de solucionar esses dois problemas, as seguintes modificações foram feitas à técnica cirúrgica original. Por meio de uma única via deltopeitoral, o tendão do grande dorsal é isolado e desinserido do úmero. Ele é então alongado e reforçado com um enxerto tendíneohomólogo, transferido ao redor do úmero e fixado à porção superolateral do tubérculomaior. Não foi usada imobilização pós-operatória comórtese toracobraquial rígida.

Articular reconstruction of the humeral head with autogenous allograft in the treatment of the osteonecrosis / Reconstrução da superfície articular da cabeça umeral com enxerto homólogo no tratamento da osteonecrose

ABSTRACT The authors describe a surgical biological reconstruction of the humeral head with frozen autogenous allograft technique for the treatment of young patients with focal osteonecrosis of the humeral head. This represents a possible alternative, maybe even definitive for some patients, when compared to hemiarthroplasty or total shoulder arthroplasty. The technique consists of the fixation of a frozen autogenous allograft with previously-molded articular cartilage from the humeral head, after cleansing the osteonecrotic focus. Five patients under 50 years of age were treated, with three very satisfactory results, one patient was lost to follow-up, and one patient had an unsatisfactory result (converted to hemiarthroplasty). The study describes the technique in detail and the three cases with a longer follow-up time.

RESUMO Os autores descrevem a técnica cirúrgica de reconstrução biológica da cabeça umeral com enxerto ósseo homólogo congelado usada no tratamento da osteonecrose segmentar da cabeça umeral em pacientes jovens e destacam a abordagem como uma possibilidade opcional e talvez definitiva à hemiartroplastia ou artroplastia total do ombro. Resumidamente, a técnica consiste em reconstruir a falha encontrada na região necrótica da cabeça umeral com o uso de enxerto ósseo congelado com cartilagem para refazer a superfície articular comprometida. No total, cinco pacientes com menos de 50 anos foram tratados com essa técnica, conseguiram-se resultados muito satisfatórios em três deles, uma perda de seguimento e um resultado negativo, convertido para hemiartroplastia. O estudo descreve a técnica usada com detalhes, bem como os três casos com maior tempo de seguimento.

Articular reconstruction of the humeral head with autogenous allograft in the treatment of the osteonecrosis.

The authors describe a surgical biological reconstruction of the humeral head with frozen autogenous allograft technique for the treatment of young patients with focal osteonecrosis of the humeral head. This represents a possible alternative, maybe even definitive for some patients, when compared to hemiarthroplasty or total shoulder arthroplasty. The technique consists of the fixation of a frozen autogenous allograft with previously-molded articular cartilage from the humeral head, after cleansing the osteonecrotic focus. Five patients under 50 years of age were treated, with three very satisfactory results, one patient was lost to follow-up, and one patient had an unsatisfactory result (converted to hemiarthroplasty). The study describes the technique in detail and the three cases with a longer follow-up time.

Os autores descrevem a técnica cirúrgica de reconstrução biológica da cabeça umeral com enxerto ósseo homólogo congelado usada no tratamento da osteonecrose segmentar da cabeça umeral em pacientes jovens e destacam a abordagem como uma possibilidade opcional e talvez definitiva à hemiartroplastia ou artroplastia total do ombro. Resumidamente, a técnica consiste em reconstruir a falha encontrada na região necrótica da cabeça umeral com o uso de enxerto ósseo congelado com cartilagem para refazer a superfície articular comprometida. No total, cinco pacientes com menos de 50 anos foram tratados com essa técnica, conseguiram-se resultados muito satisfatórios em três deles, uma perda de seguimento e um resultado negativo, convertido para hemiartroplastia. O estudo descreve a técnica usada com detalhes, bem como os três casos com maior tempo de seguimento.

Walch B0 glenoid: pre-osteoarthritic posterior subluxation of the humeral head.

The management of primary osteoarthritis of the shoulder has been well investigated. However, the etiology and management of posterior humeral head subluxation in the context of primary glenohumeral osteoarthritis remain controversial. The finding of static posterior subluxation of the humeral head before the development of posterior bone erosion of the glenoid in young men with radiographic findings of primary osteoarthritis has been described as arthrogenic posterior subluxation of the humeral head. It demonstrates the earliest form of the osteoarthritic evolution, and an excessive glenoid retroversion is the only probable cause of this static subluxation, although this is controversial. The clinical relevance of these findings is important in allowing the identification of patients at risk for development of glenohumeral osteoarthritis and in developing an early treatment for the subluxation to try to alter the natural course of this disease. The aim of our summary paper was to review the current literature on this matter in an attempt to better understand the pathophysiologic mechanism of this condition, which we named pre-osteoarthritic posterior subluxation of the humeral head, or Walch B-zero (B0) glenoid. It appears that Walch B0 glenoid is a pathologic condition (initially dynamic, eventually evolving into a static condition) that may lead to posterior erosion of the glenoid, taking place once there is asymmetric increased posterior glenohumeral contact forces and possibly associated with increased glenoid retroversion.