Shoulder Arthrodesis for Traumatic Brachial Plexus Injuries: Functional Outcomes and Complications.

BACKGROUND: The external rotation and abduction of shoulder are considered one of the priorities of reconstruction in brachial plexus injury. The aim of this study was to evaluate the functional results and complications of shoulder arthrodesis in patients with brachial plexus injury to better comprehend the benefits of this procedure. METHODS: Between 2015 and 2019, 15 shoulder arthrodesis were performed in patients with long-standing brachial plexus injury. The main indication for arthrodesis was absent or poor recovery of shoulder abduction and external rotation. Patients presented different levels of injury. Shoulder measurements of active abduction and external rotation were made based on image records of the patients. A long 4.5-mm reconstruction plate was fit along the scapular spine, acromion, and lateral proximal third of the humerus. Structured bone graft was fit into the subacromial space. RESULTS: The mean preoperative abduction was 16°, and the mean postoperative abduction was 42°. The mean preoperative external rotation was -59°, and the mean postoperative external rotation was -13°. The mean increase in abduction and external rotation was 25° and 45°, respectively. Bone union was achieved in all cases at an average time of 5.23 months. We experienced humeral fractures in 26.66% of the cases, which were all successfully treated nonoperatively. CONCLUSIONS: Shoulder arthrodesis is a rewarding procedure for patients with brachial plexus injuries. A marked improvement in the upper limb positioning was observed in all patients. It should be considered as the main therapeutic option in cases where nerve reconstruction is no longer possible.

The influence of shoulder arthrodesis on the function of the upper limb in adult patients after a brachial plexus injury: a systematic literature review with elements of meta-analysis.

Based on the literature, 294 shoulder arthrodeses after brachial plexus injury in adults were assessed, mostly male; the mean age of the patients was 33 years, and the mean follow-up time was 5.5 years. The most common cause of injury was a traffic accident, especially on a motorcycle.Arthrodesis position ranged from 15 to 40 degrees of flexion, 15 to 60 degrees of abduction, and 0 to 50 degrees of internal rotation with the predominance of position by the 30-30-30 rule. Plates, screws, and external fixation were used for stabilization. The complication rate was at the level of 28%, the most common complication being delayed union or nonunion.Active movements of flexion and abduction averaged 61 and 56 degrees, respectively, while reaching the hand to the mouth, front pocket, and buttock was feasible for 69%, 71%, and 38%, respectively, after surgery. Shoulder pain was present in 77% of patients, and 28% experienced no relevant pain reduction after surgery. The subjective satisfaction rate was 82% based on significant improvement and satisfaction reported by patients after arthrodesis.Arthrodesis of the shoulder, in adult patients after brachial plexus palsy, can reduce shoulder pain, increase stability, and result in a range of motion that increases the possibility of carrying out everyday activities. This affects the high level of subjective patient satisfaction after surgery. Cite this article: EFORT Open Rev 2021;6:797-807. DOI: 10.1302/2058-5241.6.200114.

Glenohumeral arthrodesis.

Glenohumeral arthrodesis is a salvage procedure indicated for brachial plexus palsy, refractory instability, humeral and/or glenoid bone loss, deltoid and rotator cuff insufficiency, and chronic infections. The aim is to provide a painless, stable shoulder that is positioned to maximize function. Scapulothoracic motion as well as motion of the elbow and hand deliver satisfactory function in most patients. Intra-articular, extra-articular, and more commonly, combined techniques involving glenohumeral and humeroacromial fusion, have been described. More recently, authors have reported arthroscopic assisted techniques for shoulder arthrodesis with promising results as well as less complicated conversion from shoulder arthrodesis to reverse total shoulder arthroplasty. Despite advances in materials and techniques, glenohumeral arthrodesis continues to be associated with complication rates as high as 43%. A thorough understanding of the indications, contraindications, outcomes, and complications is paramount to improving patient results. Glenohumeral arthrodesis is a safe and effective procedure for the appropriate indications. The high frequency of complications mandates a frank preoperative discussion to ensure that each patient understands the magnitude of the procedure, its risks, possible complications, and expected outcome.

Conversion to reverse shoulder arthroplasty fifty-one years after shoulder arthrodesis: A case report.

BACKGROUND: Patients with a shoulder arthrodesis generally experience restriction in range of motion and limitations in activities of daily living. In addition, up to one-third of the patients deals with serious peri scapular pain. The conversion of a shoulder arthrodesis in a reverse shoulder arthroplasty (RSA) has been described as an effective treatment to achieve better function and decreased pain, although literature is sparse. We present the case of a conversion from a painful shoulder arthrodesis to RSA, after a 51 years interval. CASE SUMMARY: A 71-year-old male presented with severe peri scapular pain and limited function 51 years after shoulder arthrodesis. Preoperative workup showed a normal bone stock of the glenoid and an intact axillary nerve, but atrophic posterior part of the deltoid muscle. The shoulder arthrodesis was successfully converted to RSA. Twelve months postoperative the patient was very satisfied. He has no pain at rest, nor with exercise and experienced definite improvements in activities of daily living, despite his limited range of motion. CONCLUSION: Conversion from shoulder arthrodesis to a RSA can be performed safely, with a high chance of peri scapular pain relief; even after a longstanding arthrodesis.

Comparison of spinal accessory nerve transfer to supra-scapular nerve vs. shoulder arthrodesis in adults with brachial plexus injury.

BACKGROUND: Restoring shoulder mobility, stability, and strength is a key goal in patients with brachial plexus injuries. Shoulder arthrodesis is chiefly used as an adjunct to, or after failure of, initial direct nerve surgery. The objective of this study was to compare clinical and functional shoulder outcomes after direct nerve transfer vs. shoulder arthrodesis in adults with supra-clavicular brachial plexus injuries. HYPOTHESIS: Shoulder arthrodesis, currently used as a salvage procedure in brachial palsy injuries, deserves to be viewed to a valid alternative to direct nerve transfer. MATERIAL AND METHODS: A retrospective study was conducted in 58 patients with a follow-up of at least 2 years. Among them, 20 were managed by transfer of a spinal accessory nerve fascicle to the supra-scapular nerve and 38 by shoulder arthrodesis. Outcome measures were shoulder range-of-motion, isometric shoulder strength, and the Disabilities of the Arm, Shoulder, and Hand (DASH) score. RESULTS: Mean age at surgery was 24 years and mean follow-up was 46 months (range, 24-156 months). Motion ranges of the shoulder were not significantly different between the two treatment groups. Data variance was significantly greater in the nerve transfer group than in the shoulder arthrodesis group for scapular antepulsion (p=0.0011), abduction (p<0.001), and external rotation (p=0.0066). Strength was significantly greater in the arthrodesis group in all directions of motion. The DASH scores showed no significant between-group differences. CONCLUSIONS: The results of this study conflict with the widely help opinion that nerve transfer to the supra-scapularis nerve produces better clinical outcomes compared to shoulder arthrodesis. Nerve transfer was not better than shoulder arthrodesis in our patients. The data variance heterogeneity suggests poor predictability and reliability of nerve transfer, in contrast to the modest but predictable and uniform results of shoulder arthrodesis. LEVEL OF EVIDENCE: IV, retrospective observational comparative study.

Shoulder arthrodesis using a vascularized scapular pillar graft: Cadaver study and surgical technique.

INTRODUCTION: Whether secondary to trauma, infection or tumor invasion, a complex reconstruction procedure is required after proximal humerus resection. Among the reconstruction options, there are few published reports of a vascularized scapular pillar graft being used. The goal of our study was to describe the surgical technique for shoulder arthrodesis using a vascularized scapular pillar based on an anatomical study of this graft. MATERIALS AND METHODS: This anatomical and surgical study involved both shoulders from seven separate cadavers (14 shoulders). Two shoulders were used for trials. Four shoulders were injected with latex to describe the vascularization of the composite scapular pillar graft. Five fresh shoulders were then used to define the optimal orientation of the osteotomy and rotation of the scapular pillar. Each vascularization element was then isolated and measured. The shoulder arthrodesis procedure using a composite scapular pillar graft was performed on three shoulders in order to describe the steps of this procedure. RESULTS: The angular branch of the thoracodorsal artery was 8.25±1.5 cm long and reached the lateral angle of the scapula 1.6±1.1 cm above its antero-inferior edge. The mean length of the circumflex scapular artery was 5.25±1 cm with 3 cm separating the inferior edge of the glenoid and the end of the artery in question. Optimal graft positioning was achieved with a glenoid osteotomy of the pillar that was horizontal in the frontal plane and angled 20° downward and forward in the sagittal plane. This resulted in the pillar being turned 240° medially (internal rotation). DISCUSSION: The latex injection study confirmed that the scapular pillar always has two vascularization sources: circumflex scapular artery and angular branch of the thoracodorsal artery. While there are anatomical variations, the scapular pillar shares its vascularization with the latissimus dorsi and teres major muscles. It can be preserved when transferring the graft for reconstruction. Our anatomical description of shoulder arthrodesis using this composite graft allows surgeons to anticipate potential technical and anatomical problems that could be encountered during this complex surgical procedure.

Satisfied patients after shoulder arthrodesis for brachial plexus lesions even after 20 years of follow-up.

PURPOSE: Patients with an upper brachial plexus lesion can suffer from dysfunction, joint deformities and instability of the shoulder. The goal of this study was to determine pain, shoulder function, patient satisfaction and muscle strength in shoulder arthrodesis in patients with an upper brachial plexus lesion more than 15 years after surgery. METHODS: We retrospectively studied 12 patients with a brachial plexus lesion of mean age 46 years (27-61). At a mean of 19.8 years (15.4-30.3) after shoulder arthrodesis, patient-reported outcome measures (PROMs), range of motion (e.g., active and passive), patient satisfaction, strength of the affected and non-affected side (e.g., maximum isometric strength in Newton in forward and retroflexion, ab- and adduction, internal and external rotation) and position of fusion were obtained. PROMS consisted of the Visual Analogue Scale (VAS; 0-100, 0 being painless) for pain and the Disabilities of the Arm, Shoulder and Hand Score (DASH; 0-100, 0 being the best score) for function. RESULTS: At latest follow-up, the median VAS pain score was 49 (0-96) and 0 for, respectively, the affected and unaffected side. The DASH was 15 (8-46), meaning a reasonable to good function of the upper extremity. Active and passive retroflexion was significantly different (p = 0.028). All subjects stated that in the same situation they would undergo a shoulder arthrodesis again. The unaffected side was significantly stronger in every direction. Arthrodesis showed position of fusion of 31° (12-70) abduction, 20° (10-50) forward flexion and 22° (- 14 to 58) internal rotation. The unaffected side was significantly (p ≤ 0.05) stronger in every movement direction. CONCLUSION: At a mean of 20 years after shoulder arthrodesis, patients with an upper brachial plexus lesion are still satisfied with a good to moderate functional improvement. LEVEL OF EVIDENCE III: A retrospective cohort study.

Glenohumeral Arthrodesis With Locking Compression Plate.

Glenohumeral arthrodesis is performed for paralytic disorders. Internal fixation with plates has been described to diminish the rate of nonunion associated with this procedure. Because plates are located over the scapular spine and the acromion to add a point of bony union between the acromion and the humeral head, skin irritation and hardware removal are the main complications associated with plates. We describe a technique using a locking compression plate placed under the acromion to decrease complications associated with the hardware without increasing the risk of nonunion. The technique presented here has 2 biomechanical principles of fixation: compression and neutralization. Compression by 2 screws allows for a bony union at the glenohumeral joint, and neutralization by the locking compression plate allows for early postoperative motion.

Once an arthrodesis, always an arthrodesis?

BACKGROUND: An arthrodesis of the shoulder is historically a solution for severe shoulder joint problems, for which no prosthetic solution is deemed possible. With the introduction of the reverse shoulder arthroplasty (RSA), which is intrinsically stable at the glenohumeral joint, it seems logical to consider conversion of a painful arthrodesis into a RSA, provided that the deltoid was not destroyed during the arthrodesis. METHODS: Four patients (2 men, 2 women; age 46-66 years) with a longstanding arthrodesis (5-11 years) visited our clinic with a painful shoulder (mainly around the scapula) with the request to provide more mobility. In all, the shoulder was fused in 60° to 80° of abduction, 20° to 40° of flexion, and 40° to 50° of internal rotation. All patients refused an osteotomy as treatment for the pain. A preoperative electromyelogram showed activity in at least the posterior or middle parts of the deltoid, or both. They were offered revision of arthrodesis to a reverse prosthesis. All complications, especially instability, were discussed. Surgery was performed through the previous deltopectoral scar. In 3 cases, the osteotomy was lateral to the original joint line, providing some lateralization. RESULTS: Follow-up was 22 to 60 months. The Constant-Murley score improved from 15-21 to 30-60. No dislocations occurred. All patients were satisfied, especially with the increased, although not impressive, rotations. Pain did not disappear but decreased considerably, from visual analog scale 8-10 to 0-4. CONCLUSION: Conversion into a RSA is a safe procedure in patients with a painful arthrodesis and grossly intact deltoid, providing better glenohumeral mobility (especially rotations), leading to improved patient satisfaction.

PreFix™ external fixator used to treat a floating shoulder injury caused by gunshot wound.

Open fractures of the shoulder are extremely rare, and their treatment is a major challenge for surgeons. Only cases encountered in military settings have been reported thus far. Such fractures are often the result of ballistic trauma, which causes extensive damage to both bony and soft tissues. Since these injuries are associated with a high risk of infection and the presence of comminuted fractures, external fixation is necessary for repair. Use of external fixators and revascularization techniques has reduced the number of cases requiring shoulder amputation or disarticulation. Injury to the proximal extremity of the humerus, acromion, and clavicle further complicates the treatment. No published studies have described the assembly of external fixators for fractures in the scapular region with significant bone loss. In addition, no cases have been described in civilian settings. However, with an increase in urban violence and the traffic of illegal arms, civilian surgeons are now encountering an increasing number of patients with these injuries. In this report, we not only present a rare case of floating shoulder injury in a civilian setting but also provide an overview of the existing treatment strategies for this type of trauma, with special focus on the use of external fixators in elective shoulder arthrodesis and on military cases.

Scapulo-humeral arthrodesis using a pedicled scapular pillar graft following resection of the proximal humerus.

BACKGROUND: Scapulo-humeral arthrodesis (SHA) is a proven reconstruction method in patients with proximal humerus malignancies requiring resection of the shoulder abduction apparatus (rotator cuff and deltoid muscles) or its nerve supply. Standard practice consists in using a pedicled fibular flap. We use instead a pedicled autologous bone graft harvested from the ipsilateral scapular pillar. HYPOTHESIS: The objective of this study was to assess functional outcomes and radiological healing after SHA using a pedicled scapular pillar graft. MATERIALS AND METHODS: We retrospectively reviewed the charts of the 12 patients managed at a single center by a single surgeon between 1994 and 2011. SHA was performed using a vascularised ipsilateral scapular pillar graft after proximal humerus resection to treat a bone malignancy. The graft was harvested from the ipsilateral scapular pillar, pedicled on the circumflex scapular artery, fitted into the remaining proximal humerus, and secured to the glenoid using screws. A humerus-scapular spine plate was added to stabilize the arthrodesis. Radiographic results were assessed on standard radiographs obtained at last follow-up. Functional outcomes were evaluated using the MusculoSkeletalTumour Society (MSTS) score and Toronto Extremity Salvage Score (TESS). RESULTS: After a mean follow-up of 4.9 years, 87.5% of SHA junctions were healed, mean MSTS score was 71%, and mean TESS score was 70%. DISCUSSION: The outcomes in our patients were similar to those reported after SHA using a pedicled fibular flap. However, our technique does not require microsurgery. It is simple, reproducible, and effective. Its indications of choice are intra- or extra-articular resection of the proximal humerus including the attachments of the rotator cuff and deltoid muscle tendons or the nerves supplying these muscles. LEVEL OF EVIDENCE: Level IV (retrospective study).

Artrodesis de hombro vs cirugía primaria de reconstrucción en pacientes con lesiones graves de plexo braquial: estudio comparativo / Shoulder arthrodesis vs. primary reconstruction surgery in patients with serious brachial pexus injuries: comparative study

Objetivo: La cirugía de reparación nerviosa es la primera elección en lesiones del plexo braquial. La artrodesis de hombro estabiliza y otorga cierta abducción por desplazamiento de la escápula. El objetivo del presente trabajo es: comparar la artrodesis de hombro versus la transferencia del nervio espinal accesorio al supraescapular. Materiales y métodos: se analizaron en forma retrospectiva 20 pacientes con parálisis completa del miembro superior y avulsión radicular de al menos 4 raíces. Diez fueron artrodesados, y en los otros 10 se realizó una única transferencia nerviosa para el hombro, antes citada. El seguimiento mínimo fue de 2 años. Se determinó la abducción en grados y se describió una escala para estudiar los resultados de ambas técnicas. Los resultados fueron comparados estadísticamente. Resultados: en los pacientes artrodesados el promedio, según la escala, fue 4,5 puntos, mientras que en los transferidos fue 4,8. La media de abducción en grados fue de 37 en artrodesados y 43,5 en transferidos. No se encontraron diferencias estadísticamente significativas entre ambos grupos. Conclusiones: los resultados de ambas técnicas son semejantes. La artrodesis escápulo-humeral es una posibilidad terapéutica aceptable del hombro paralizado en los pacientes con lesiones muy graves del plexo braquial y escasez de donantes nerviosos.

Objective: Primary nerve reconstruction surgery is the gold standard in brachial plexus injuries. Shoulder arthrodesis stabilizes and abducts the shoulder by the movement of the scapula. The goal of the present study is to compare shoulder arthrodesis versus spinal nerve transfer to supraescapular nerve. Materials y methods: 20 patients with complete brachial plexus palsy (flail arm) and at least 4 roots avulsions were analyzed retrospectively. Ten were submitted to shoulder arthrodesis, while in the other 10, only one nerve transfer was performed to reinervate the shoulder. Minimum follow-up was 2 years. The results were determined in degrees of abduction, also measured in a scale, and compared statistically. Results: the mean result in the patients with shoulder arthrodesis was 4.5, and 4.8 in the nerve transferred. Mean final abduction was 37 degrees in arthrodesis and 43.5 in nerve transfer. No statistical significant difference was found between groupsConclusions: the results of both techniques are similar. Shoulder arthrodesis is a viable option in severely injured brachial plexus patients where donor nerve are scarce.

Biomechanical analysis for primary stability of shoulder arthrodesis in different resection situations.

BACKGROUND: Only very few publications dealing with shoulder arthrodesis after bone resection procedures and no biomechanical studies are available. The presented biomechanical analysis should ascertain the type of arthrodesis with the highest primary stability in different bone loss situations. METHODS: On 24 fresh cadaveric shoulder specimens three different bone loss situations were investigated under the stress of abduction, adduction, anteversion and retroversion without destruction by the use of a material testing machine. In each of the testings a 16-hole reconstruction plate was used and compared to arthrodesis with an additional dorsal 6-hole plate. FINDINGS: The primary stability of shoulder arthrodesis with a 16-hole reconstruction plate after humeral head resection could be increased significantly if an additional dorsal plate was used. However, no significant improvement with the additional plate was detected after resection of the acromion. Of all investigated forms, arthrodesis after humeral head resection with additional plate showed the highest and arthrodesis after humeral head resection without additional plate showed the lowest force values. The mean values for forces achieved in abduction and adduction were considerably higher than those in anteversion and retroversion. INTERPRETATION: There are no consistent specifications of arthrodesis techniques after resection situation available, thus the presented biomechanical testings give important information about the most stable form of arthrodesis in different types of bone loss. These findings provide an opportunity to minimize complications such as pseudarthrosis for a satisfying clinical outcome.

Shoulder Arthrodesis in Brachial Plexus Injury Patient

PURPOSE: To analyze the clinical and radiologic results of the shoulder arthrodesis in brachial plexus injury patients with flail upper extremity. MATERIAL AND METHOD: From Aug 1978 to April 2008, 29 shoulders in 29 patients with brachial plexus injury with shoulder fusion, we evaluated 20 shoulders in 20 patients, more than 1 year follow up. The average follow-up period was 6.45years (range: 1year~24years). There were 13 men and 7 women, and the mean age at the time of trauma was 32.0years(2~65 years). The type of injury was a motorcycle accident in 11 patients, in car accident in 5, pedestrian accident in 3, and fall from a height in 1. The lesion of injury was root and trunk in 1 patient, trunk and cord in 1, trunk in 18. Surgery was performed on the whole arm type paralysis in 12 patients, lower arm type paralysis in 8 patients. The preoperative visual analog scale score was 8.7(7~10). When the trapezius and serratus anterior muscle were in function, operation was performed. 18 patients were processed to the additional operation. Gracilis free flap in 6 patients, neurotization in 3, Steindler flexor plasty in 6, and tendon transfer in 3 were performed. Fixation was conducted with cancellous screws in 13 patients, Knoles pins in 5, and cancellous screws and Knoles pins in 2. The position of the arthrodesis at operation was 28.5degrees(20~45degrees) in abduction, 30.3degrees(20~45degrees) in flexion, and 30.8degrees(20~40degrees) in internal rotation. RESULT: The follow up visual analog scale score was 3.4(0~7). Postoperatively, shoulder spica cast was applied for 15.3weeks(8-20weeks). The median time to bony union was 17.7weeks(9~28weeks). Average range of motion was 32.0degrees(15~40degrees) of abduction, 24.0degrees(10~40degrees) of flexion, and 18.5degrees(10~30degrees)of internal rotation. CONCLUSION: The shoulder fusion in brachial plexus injury patients is one of the good methods to relieve pain, improve the function and stabilize the flail shoulder joint.