TRANSFER OF LATISSIMUS DORSI FOR IRREPARABLE ROTATOR-CUFF TEARS

Superior capsular reconstruction vs. Latissimus dorsi transfer for posterosuperior irreparable rotator cuff tears without arthritic change: Mid-term Crossover study

Background

Latissimus dorsi transfer (LDT) is a well-known tendon-transfer technique with long-term clinical follow-up results, whereas superior capsular reconstruction (SCR) has recently emerged as a treatment option for posterosuperior irreparable rotator cuff tears (PSIRCTs). However, only a few small short-term comparative studies have evaluated SCR and LDT. We evaluated the clinical and radiological outcomes of SCR and LDT in PSIRCTs without arthritic changes.

Methods

This retrospective clinical comparative study evaluated patients who underwent SCR or LDT for PSIRCTs and had a mid-term (at least 5 years) follow-up. 28 patients in the SCR group and 31 in the LDT group were included. The visual analog scale (VAS) score, patient-reported clinical outcome scores, and active range of motion (aROM) were used for assessing clinical outcomes. The radiologic outcomes including progression of glenohumeral osteoarthritis and graft integrity were evaluated using Hamada grade and Sugaya classification, respectively.

Results

Significant improvements in VAS scores and aROM were observed in both groups. The LDT group reported significant improvements in all patient-reported outcome scores. However, SCR group showed no significant improvement in patient-reported outcome scores except for American Shoulder and Elbow Surgeons score. In radiologic outcomes, AHD was significantly decreased, and the Hamada grade was significantly increased postoperatively in both groups. Moreover, the progression of arthritic change was significantly greater in the LDT group, while the rate of graft retear was markedly higher in the SCR group.

Conclusions

Although both SCR and LDT improved clinical outcomes, LDT was superior to SCR in terms of patient-reported outcome scores. However, progression of osteoarthritis is more common in LDT whereas graft retear is more common in SCR. Therefore, SCR or LDT could be considered as a surgical treatment in PSIRCTs without arthritic changes, but clinical outcomes as well as complications (osteoarthritis and graft re-tear) must be considered.

Level of evidence

Level of evidence, III.

Biomechanical comparison of internal rotational effectiveness following medialized glenoid and lateralized humerus reverse shoulder arthroplasty with tendon transfers: isolated latissimus dorsi, combined latissimus dorsi/teres major, and pectoralis major tendon transfers

BACKGROUND

The restriction of active internal rotation (IR) after reverse shoulder arthroplasty (RSA) poses a challenging problem for reconstructive shoulder surgeons, particularly in patients suffering from massive rotator cuff tears (mRCTs) with subscapularis (SSC) deficiency. This study aims to evaluate the biomechanical effectiveness of different tendon transfer techniques following medialized glenoid and lateralized humerus RSA in improving IR strength.

METHODS

Eight cadaveric shoulder specimens were evaluated using a custom shoulder testing system designed to simulate loading conditions typical of mRCT with SSC insufficiency. The study examined four different conditions: 1) RSA alone, 2) RSA with pectoralis major (PM) tendon transfer, 3) RSA with latissimus dorsi (LD) transfer, and 4) RSA with combined LD and teres major (LDTM) transfer. Testing was conducted at abduction angles of 0°, 20°, and 40° under three distinct muscle loading conditions. IR torque was quantitatively assessed using a torque wrench at 60° IR. Additionally, the anterior dislocation force was measured at 20° abduction and 10° IR.

RESULTS

PM and LDTM transfers following RSA significantly increased IR strength at all abduction angles and loading conditions, (P < .001 for PM; P < .006 for LDTM) except at 0° under normal load. LD transfer only showed a significant increase in IR strength at 20° with triple load (P = .022). PM and LDTM transfers significantly increased IR strength across all positions and loading conditions compared to LD transfer, with PM transfers demonstrating notably higher strength improvements at 0° and 20° abduction under increased loads compared to LDTM transfer (P < .026). Anterior dislocation forces were highest for PM, followed by LDTM and LD, with no significant differences compared to RSA alone or among the transfers (P > .864) .

CONCLUSION

PM and LDTM transfers significantly improved IR strength in medialized glenoid and lateralized humerus RSA for mRCT with SSC deficiency, unlike isolated LD transfer. No difference in anterior dislocation force was noted among the transfers. However, further research is warranted to determine the effects of tendon transfers on IR strength across various RSA prosthesis designs.

Isolated Latissimus Dorsi Transfer versus Combined Latissimus Dorsi and Teres Major Tendon Transfer for Irreparable Anterosuperior Rotator Cuff Tears

Background

Irreparable anterosuperior rotator cuff tears (IASRCTs) present significant challenges, especially in young, active patients with limited joint-preserving options. Recently, latissimus dorsi (LD) transfer and combined latissimus dorsi and teres major (LDTM) transfer have gained attention as a potential surgical option. We aimed to compare the clinical and radiological outcomes of LD versus combined LDTM transfer in IASRCTs.

Methods

In this retrospective comparative study, 53 patients with IASRCTs were analyzed after undergoing either LD transfer attached to lesser tuberosity (LT) (LD group, n = 23) or combined LDTM transfer attached to greater tuberosity (GT) (LDTM group, n = 30). Clinical evaluations included the visual analog scale score for pain, active shoulder range of motion (ROM), University of California Los Angeles Shoulder Score, American Shoulder and Elbow Surgeons score, activities of daily living that require active internal rotation (ADLIR) scores, and subscapularis (SSC)-specific examinations. Radiographic analyses involved assessing acromiohumeral distance (AHD), Hamada grade, the rate of anterior glenohumeral subluxation reduction, and integrity of the transferred tendon.

Results

Postoperatively, both groups demonstrated significant improvements in pain and clinical scores (p < 0.001). At the 2-year follow-up, the LDTM group showed superior internal rotation strength (p < 0.001), ADLIR score (p = 0.017), and SSC-specific physical examination results (belly-press, p = 0.027; bear-hug, p = 0.031; lift-off, p = 0.032). No significant changes in AHD or Hamada grade were observed in either group. At final follow-up, no significant differences were found between the 2 groups in terms of AHD (p = 0.539) and Hamada grade (p = 0.974). Although preoperative anterior glenohumeral subluxation was improved in both groups, the LDTM group showed a statistically significantly higher rate of restoration compared to the LD group (p = 0.015).

Conclusions

While both LD and combined LDTM transfers for IASRCTs improved postoperative pain relief, clinical scores, and active ROM, the combined LDTM transfer attached to GT was superior to LD transfer attached to LT in terms of internal rotational strength, ADLIR score, and SSC-specific examinations. Neither group showed significant progress in cuff tear arthropathy or decreased AHD at 2-year follow-up; however, the combined LDTM transfer notably improved preoperative anterior glenohumeral subluxation.

Mid- to long-term outcomes of latissimus dorsi tendon transfer for massive irreparable posterosuperior rotator cuff tears: a systematic review and meta-analysis

BACKGROUND

This study aims to analyze the mid-to long-term results of the latissimus dorsi tendon for the treatment of massive posterosuperior irreparable rotator cuff tears as reported in high-quality publications and to determine its efficacy and safety.

METHODS

A systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. PubMed, Scopus, and EMBASE databases were searched until December 2022 to identify studies with a minimum 4 year follow-up. Clinical and radiographic outcomes, complications, and revision surgery data were collected. The publications included were analyzed quantitatively using the DerSimonian Laird random-effects model to estimate the change in outcomes from the preoperative to the postoperative condition. The proportion of complications and revisions were pooled using the Freeman-Tukey double arcsine transformation.

RESULTS

Of the 618 publications identified through database search, 11 articles were considered eligible. A total of 421 patients (432 shoulders) were included in this analysis. Their mean age was 59.5 ± 4 years. Of these, 277 patients had mid-term follow-up (4-9 years), and 144 had long-term follow-up (more than 9 years). Postoperative improvements were considered significant for the following outcome parameters: Constant-Murley Score (0-100 scale), with a mean difference (MD) = 28 points (95% confidence interval [CI] 21, 36; I2 = 89%; P < .001); visual analog scale, with a standardized MD = 2.5 (95% CI 1.7, 3.3; P < .001; I2 = 89%; P < .001); forward flexion, with a MD = 43° (95% CI 21°, 65°; I2 = 95% P < .001); abduction, with a MD = 38° (95% CI 20°, 56°; I2 = 85%; P < .01), and external rotation, with a MD = 8° (95% CI 1°, 16°; I2 = 87%; P = .005). The overall reported mean complication rate was 13% (95% CI 9%, 19%; I2 = 0%), while the reported mean revision rate was 6% (95% CI: 3%, 9%; I2 = 0%).

CONCLUSIONS

Our pooled estimated results seem to indicate that latissimus dorsi tendon transfer significantly improves patient-reported outcomes, pain relief, range of motion, and strength, with modest rates of complications and revision surgery at mid-to long-term follow-up. In well-selected patients, latissimus dorsi tendon transfer may provide favorable outcomes for irreparable posterosuperior cuff tears.

Lower Trapezius Transfer Improves Clinical Outcomes With a Rate of Complications and Reoperations Comparable to Other Surgical Alternatives in Patients with Functionally Irreparable Rotator Cuff Tears: A Systematic Review

PURPOSE

To analyze the clinical outcomes of lower trapezius transfer (LTT) for patients with functionally irreparable rotator cuff tears (FIRCT) and summarize the available literature regarding complications and reoperations.

METHODS

After registration in the International prospective register of systematic reviews (PROSPERO [CRD42022359277]), a systematic review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines was performed. Inclusion criteria were English, full-length, peer-reviewed publications with a level of evidence IV or higher reporting on clinical outcomes of LTT for FIRCT. Ovid MEDLINE, Embase, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, and Scopus via Elsevier databases were searched. Clinical data, complications and revisions were systematically recorded.

RESULTS

Seven studies with 159 patients were identified. The mean age range was 52 to 63 years, 70.4% of the patients included were male, and the mean follow-up time ranged between 14 and 47 months. At final follow-up, LTT lead to improvements in range of motion, with reported forward elevation (FE) and external rotation (ER) mean gains of 10° to 66° and 11° to 63°, respectively. ER lag was present before surgery in 78 patients and was reversed after LTT in all shoulders. Patient-reported outcomes were improved at final follow-up, including the American Shoulder and Elbow Society score, Shoulder Subjective Value and Visual Analogue Scale. The overall complication rate was 17.6%, and the most reported complication was posterior harvest site seroma/hematoma (6.3%). The most common reoperation was conversion to reverse shoulder arthroplasty (5%) with an overall reoperation rate of 7.5%.

CONCLUSIONS

Lower trapezius transfer improves clinical outcomes in patients with irreparable rotator cuff tears with a rate of complications and reoperations comparable to other surgical alternatives in this group of patients. Increases in forward flexion and ER are to be expected, as well as a reversal of ER lag sign when present before surgery.

LEVEL OF EVIDENCE

Level IV, systematic review of Level III-IV studies.

Changes in in vivo three dimensional shoulder kinematics following latissimus dorsi tendon transfer for irreparable posterosuperior rotator cuff tears: A systematic review with meta-analysis

BACKGROUND

Latissimus dorsi transfer is a surgical procedure that can be used for treating posterosuperior rotator cuff tears. The procedure leads to improved shoulder function via alterations in the force vector couple around the shoulder. However, there is still no consensus on the biomechanical changes resulting from latissimus dorsi transfer.

METHODS

We performed a systematic review of the literature on 3D motion analysis studies evaluating the effects of latissimus dorsi transfer on shoulder kinematics. The available data on segment and joint range of motion was extracted and subject to meta-analysis when consistent across the studies.

FINDINGS

Our meta-analysis of pre- and post-operative studies revealed a significant improvement in forward flexion and abduction following latissimus dorsi transfer. When comparing the latissimus transferred shoulder with an uninjured contralateral side the meta-analysis found no significant difference in flexion range of motion, while abduction and external rotation was significantly higher in the uninjured shoulders. The overall risk of bias was moderate to high. High heterogeneity was found in the reporting of data, which limited our ability to perform a meta-analysis across the studies for all interest outcomes.

INTERPRETATIONS

Our findings suggest that latissimus dorsi transfer for posterosuperior rotator cuff tears effectively improves shoulder flexion and abduction. External rotation is also expected to improve but at inferior levels as compared to the unaffected side. However, the heterogeneity of the reported data on 3D motion analysis studies highlights the need for better standardization in research and reporting as to conclude the impact of different joints.

Clinical outcomes in latissimus dorsi transfer single- versus double-incision technique

BACKGROUND/HYPOTHESIS

In patients with irreparable postero-superior rotator cuff lesions, a latissimus dorsi transfer (LDT) is performed. For this surgery, different techniques are used. In this study, we aim to compare the patient's functional outcome after treatment with modified L'Episcopo "single-incision" and modified Gerber "double-incision" technique for LDT.

METHODS

44 patients with irreparable postero-superior rotator cuff ruptures, refractory to physiotherapeutic treatment were included. 21 patients were treated using a modified L'Episcopo "single-incision", 23 patients with modified Gerber "double-incision" surgical approach. All patients had full-thickness tears of at least two complete tendons, and all had fully functioning deltoid and subscapularis muscles. Preoperatively, there were statistically significant differences between the two groups in all preoperative CMS sub-parameters except "power" and "pain". In the postoperative follow-up, a functional assessment using "Constant-Murley Score" (CMS) and "Age- and gender-related CMS" was conducted.

STUDY DESIGN

Retrospective-comparative trial.

LEVEL OF EVIDENCE III

RESULTS

There were no statistically significant differences between age, sex and time of follow-up between the two study groups (p > 0.05). The mean age was 59.2(± 6.3) years, and the mean follow-up time was 45.4(± 9.3) months for both groups taken together. Mean CMS improved for both groups together from 24.2 ± 8.2 points prior to surgery, to 62.8 ± 17.4 points after a mean follow-up time of 45.4 ± 9.3 months post surgery. The patients treated with "single-incision" surgery (n = 21) gained significantly (p < 0.001) more in CMS and all CMS-sub-scoring parameters except power and pain, compared to the patients treated with "double-incision" technique (n = 23).

CONCLUSION

This survey shows appealing post-operative functional outcome in patients with irreparable postero-superior rotator cuff lesions treated with two different techniques for LDT. We believe that the presentation of these methods and their results might encourage shoulder surgeons to implement these techniques. Especially the "single-incision" LDT surgery might be a more accustomed technique for many shoulder surgeons well trained in the deltopectoral approach.

Biomechanical comparison of combined latissimus dorsi and teres major tendon transfer vs. latissimus dorsi tendon transfer in shoulders with irreparable anterosuperior rotator cuff tears

BACKGROUND

Irreparable anterosuperior rotator cuff tears (IASRCTs) can result in a gradual loss of active elevation and internal rotation, superior and anterior translation of the humeral head, and cuff tear arthropathy. Joint-preserving treatment options for IASRCTs in young and high-demand elderly patients remain a subject of ongoing debate. The aim of the study was to evaluate the biomechanical efficacy of the combined latissimus dorsi and teres major tendon (LDTM) transfer and compare it to an isolated latissimus dorsi (LD) transfer in a cadaveric IASRCT model.

METHODS

Eight cadaveric shoulders (mean age, 68.3 ± 5.2 years; range 58-71) were tested with a custom shoulder testing system. All specimens were tested at 0°, 30°, and 60° of glenohumeral abduction in the scapular plane under 4 conditions: (1) intact, (2) IASRCT, (3) combined LDTM transfer, and (4) isolated LD transfer. The superior and anteroinferior translation and subacromial contact pressure were measured. The effects of 3 different LD and LDTM muscle loading conditions were investigated to determine the effectiveness of the muscle transfer conditions. A linear mixed effect model was used for statistical analysis, followed by a Tukey post hoc test.

RESULTS

IASRCTs significantly increased superior translation, anteroinferior translation, and subacromial peak contact pressure. Combined LDTM transfer significantly decreased superior and anteroinferior translation compared with IASRCTs in all positions and muscle loadings. Isolated LD transfer did not significantly decrease superior (P > .115) and anteroinferior translation (P > .151) compared to IASRCT at any abduction and muscle loads except superior translation at 60° abduction and 90° of external rotation (ER) (P < .036). LDTM transfer also significantly decreased peak contact pressure from the IASRCT condition at every abduction angle (P < .046). However, isolated LD transfer significantly decreased subacromial peak contact pressure only at 30° abduction and 0° and 30° of ER with triple loading (P < .048), as well as at 60° abduction and 90° of ER (P < .003).

CONCLUSIONS

Combined LDTM transfer decreased superior translation, anteroinferior translation, and subacromial contact pressure compared with the IASRCT condition. Isolated LD transfer did not improve glenohumeral translation and subacromial contact pressure. Combined LDTM transfer may be a more reliable treatment option than isolated LD transfer in patients with an IASRCT.

Latissimus dorsi tendon transfer to restore shoulder abduction in patients with deltoid paralysis: A novel technique

Background

Shoulder abduction is an essential movement for placement of the hand in space and thus for upper limb function. The objective of this study was to introduce and test the effectiveness of a new technique of latissimus dorsi tendon transfer to deltoid insertion to restore shoulder abduction.

Methods

We prospectively included 10 male patients with a lost deltoid function. Their mean age was 34.6 years (range, 25-46). We describe a new technique to compensate for the loss of the deltoid function using a latissimus dorsi tendon transfer augmented with a semitendinosus tendon graft. The tendon graft is passed over the acromion and attached to the anatomical deltoid insertion. Postoperatively, a shoulder spica in 90° abduction was used for six weeks followed by physiotherapy.

Results

Patients were followed up for a mean of 25.4 months (range, 12-48). The mean range of active shoulder abduction rose to 110° (range, 90-140°) with a mean gain of 83° of abduction.

Conclusions

This procedure can be a useful technique for restoration of a significant range and strength of active shoulder abduction.

Management of Irreparable Posterosuperior Rotator Cuff Tears-A Current Concepts Review and Proposed Treatment Algorithm by the AGA Shoulder Committee

Posterosuperior rotator cuff tears range among the most common causes of shoulder complaints. While non-operative treatment is typically reserved for the elderly patient with low functional demands, surgical treatment is considered the gold standard for active patients. More precisely, an anatomic rotator cuff repair (RCR) is considered the most desirable treatment option and should be generally attempted during surgery. If an anatomic RCR is impossible, the adequate choice of treatment for irreparable rotator cuff tears remains a matter of debate among shoulder surgeons. Following a critical review of the contemporary literature, the authors suggest the following evidence- and experience-based treatment recommendation. In the non-functional, osteoarthritic shoulder, treatment strategies in the management of irreparable posterosuperior RCT include debridement-based procedures and reverse total shoulder arthroplasty as the treatment of choice. Joint-preserving procedures aimed at restoring glenohumeral biomechanics and function should be reserved for the non-osteoarthritic shoulder. Prior to these procedures, however, patients should be counseled about deteriorating results over time. Recent innovations such as the superior capsule reconstruction and the implantation of a subacromial spacer show promising short-term results, yet future studies with long-term follow-up are required to derive stronger recommendations.

Concomitant latissimus dorsi tendon transfer during reverse total shoulder arthroplasty does not improve active external rotation or clinical outcomes in patients with external rotation deficit

BACKGROUND

To assess the role of latissimus dorsi tendon transfer (LDT) concomitant with reverse total shoulder arthroplasty in patients with external rotation (ER) deficit secondary to severe rotator cuff deficiency with and without glenohumeral arthritis.

METHODS

Patients with a positive external lag sign and <10° of active external rotation (aER) treated with reverse shoulder arthroplasty at a single institution with a minimum 12-month follow-up were retrospectively identified from a prospective database. Basic demographic information along with preoperative and postoperative range of motion (ROM) measures, American Shoulder and Elbow Surgeons score (ASES), Visual Analog Scale (VAS) pain, and Subjective Shoulder Value scores were obtained. Statistical analysis was performed to compare ROM and functional outcomes between patients who underwent concomitant LDT and those with no transfer (NT).

RESULTS

The LDT (n = 31) and NT (n = 33) groups had similar age, sex distributions, and follow-up length average (24 vs. 30 months). No differences were found between groups at baseline, final follow-up, or magnitude of change for ASES, VAS pain, and Subjective Shoulder Value scores. Baseline ROM measures were similar, except for the LDT group having slightly less aER (-8° vs. 0°; P = .004). In addition, all postoperative ROM measures including aER were similar, except for a slight improvement in active internal rotation in the NT group. The majority of patients were satisfied with their outcome (LDT 84% (n = 26); NT 87% (n = 27); P = .72).

CONCLUSION

Patients with ER deficit secondary to severe rotator cuff deficiency with and without glenohumeral arthritis undergoing reverse total shoulder arthroplasty do not have significantly improved ER or patient-reported outcome measures with LDT.

Management of Failed Rotator Cuff Repairs: A Review

Failed rotator cuff repairs present a complex issue for treating surgeons. Many methods of management exist for this pathology including revision repair with biologic augmentation, repairs with allograft, tendon transfers, superior capsular reconstruction, balloon arthroplasty, bursal acromial reconstruction, and reverse total shoulder arthroplasty. This review discusses the current literature associated with these management options.

Clinical perspectives for repairing rotator cuff injuries with multi-tissue regenerative approaches

Background

In the musculoskeletal system, bone, tendon, and muscle form highly integrated multi-tissue units such as the rotator cuff complex, which facilitates functional and dynamic movement of the shoulder joint. Understanding the intricate interplay among these tissues within clinical, biological, and engineering contexts is vital for addressing challenging issues in treatment of musculoskeletal disorders and injuries.

Methods

A wide-ranging literature search was performed, and findings related to the socioeconomic impact of rotator cuff tears, the structure-function relationship of rotator cuff bone-tendon-muscle units, pathophysiology of injury, current clinical treatments, recent state-of-the-art advances (stem cells, growth factors, and exosomes) as well as their regulatory approval, and future strategies aimed at engineering bone-tendon-muscle musculoskeletal units are outlined.

Results

Rotator cuff injuries are a significant socioeconomic burden on numerous healthcare systems that may be addressed by treating the rotator cuff as a single complex, given its highly integrated structure-function relationship as well as degenerative pathophysiology and limited healing in bone-tendon-muscle musculoskeletal tissues. Current clinical practices for treating rotator cuff injuries, including the use of commercially available devices and evolving trends in surgical management have benefited patients while advances in application of stem/progenitor cells, growth factors, and exosomes hold clinical potential. However, such efforts do not emphasize targeted regeneration of bone-tendon-muscle units. Strategies aimed at regenerating bone-tendon-muscle units are thus expected to address challenging issues in rotator cuff repair.

Conclusions

The rotator cuff is a highly integrated complex of bone-tendon-muscle units that when injured, has severe consequences for patients and healthcare systems. State-of-the-art clinical treatment as well as recent advances have resulted in improved patient outcome and may be further enhanced by engineering bone-tendon-muscle multi-tissue grafts as a potential strategy for rotator cuff injuries.

Translational Potential of this Article

This review aims to bridge clinical, tissue engineering, and biological aspects of rotator cuff repair and propose a novel therapeutic strategy by targeted regeneration of multi-tissue units. The presentation of these wide-ranging and multi-disciplinary concepts are broadly applicable to regenerative medicine applications for musculoskeletal and non-musculoskeletal tissues.

Latissimus dorsi transfer vs. lower trapezius transfer for posterosuperior irreparable rotator cuff tears

BACKGROUND

Latissimus dorsi transfer (LDT) and lower trapezius transfer (LTT) are effective treatment options for posterosuperior irreparable rotator cuff tears (IRCTs) in relatively young patients and elderly high-demand patients without arthritic changes. However, the optimal treatment option for patients with posterosuperior IRCT remains a subject of ongoing debate. This study aimed to compare clinical and radiologic short-term outcomes between arthroscopic-assisted LDT (aLDT) and arthroscopic-assisted LTT (aLTT) in patients with posterosuperior IRCT.

METHODS

This retrospective crossover study included patients who underwent aLDT or aLTT for posterosuperior IRCT and who had a minimum clinical follow-up time of 2 years after undergoing surgical procedures between January 2012 and June 2019. A total of 90 patients with posterosuperior IRCT were divided into 2 groups according to the surgical procedure: group D underwent aLDT (n = 48) and group T underwent aLTT (n = 42). Clinical outcomes comprised the visual analog scale score for pain, active shoulder range of motion (ROM), American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form (ASES) score, and activities of daily living that require active external rotation (ADLER) score. Radiologic outcomes included acromiohumeral distance (AHD). The progression of arthritis was evaluated using Hamada grade. Graft integrity was assessed using postoperative magnetic resonance imaging.

RESULTS

Significant improvements in clinical outcomes were observed in both groups. Active shoulder external rotation (P < .001), postoperative ASES score (P < .001), and ADLER score (P < .001) were significantly higher in group T than in group D. AHD at 2-year follow-up was significantly higher in group T than in group D (P < .001). The rate of progression of arthritis was significantly higher in group D (31.3%) than in group T (7.1%) (P = .031).

CONCLUSIONS

Although both LDT and LTT improved the overall clinical outcomes of patients with posterosuperior IRCT, LTT was superior to LDT in terms of shoulder ROM, functional improvement, and progression of arthritis. Our findings indicate that LTT may be the preferred treatment option for posterosuperior IRCT in relatively active and young patients.

Shoulder kinematics and muscle activity following latissimus dorsi transfer for massive irreparable posterosuperior rotator cuff tears in shoulders with pseudoparalysis

BACKGROUND

The aim of this study was to evaluate the thoracohumeral (TH) and glenohumeral (GH) motion with muscle activity after latissimus dorsi transfer (LDT) in a shoulder with a massive irreparable posterosuperior rotator cuff tear (MIRT) and pseudoparalysis compared with the asymptomatic contralateral shoulder (ACS).

METHODS

We recruited and evaluated 13 patients after LDT in a shoulder with preoperative clinical pseudoparalysis and an MIRT on magnetic resonance imaging, with a minimum follow-up period of 1 year, and with a Hamada stage of 3 or less. Three-dimensional electromagnetic tracking was used to assess shoulder active range of motion in both the LDT shoulder and the ACS. The maximal active elevation of the shoulder (MAES) was assessed and consisted of forward flexion, scapular abduction, and abduction in the coronal plane. Maximal active internal rotation and external rotation were assessed separately. Surface electromyography (EMG) was performed to track activation of the latissimus dorsi (LD) and deltoid muscles during shoulder motion. EMG was scaled to its maximal isometric voluntary contraction recorded in specified strength tests.

RESULTS

In MAES, TH motion of the LDT shoulder was not significantly different from that of the ACS (F_1,12 = 1.174, P = .300) but the GH contribution was significantly lower in the LDT shoulder for all motions (F_1,12 = 11.230, P = .006). External rotation was significantly greater in the ACS (26° ± 10° in LDT shoulder vs. 42° ± 11° in ACS, P < .001). The LD percentage EMG maximum showed no significant difference between the LDT shoulder and ACS during MAES (F_1,11 = 0.005, P = .946). During maximal active external rotation of the shoulder, the LDT shoulder showed a higher percentage EMG maximum than the ACS (3.0% ± 2.9% for LDT shoulder vs. 1.2% ± 2.0% for ACS, P = .006).

CONCLUSIONS

TH motion improved after LDT in an MIRT with pseudoparalysis and was not different from the ACS except for external rotation. However, GH motion was significantly lower after LDT than in the ACS in active-elevation range of motion. The LD was active after LDT but not more than in the ACS except for active external rotation, which we did not consider relevant as the activity did not rise above 3% EMG maximum. The favorable clinical results of LDT do not seem to be related to a change in LD activation and might be explained by its effect in preventing proximal migration of the humeral head in active elevation.

Restoration of active internal rotation following reverse shoulder arthroplasty: anterior latissimus dorsi and teres major combined transfer

BACKGROUND

Reverse shoulder arthroplasty (RSA) for irreparable massive rotator cuff tear (mRCT) and cuff tear arthropathy (CTA) demonstrates satisfactory clinical outcomes. However, many studies have reported no significant improvements in internal and external rotation. To our knowledge, there have been no studies on new attempts to restore active internal rotation following RSA. The purpose of this study was to compare RSA alone and RSA with anterior latissimus dorsi and teres major (aLDTM) tendon transfer in patients with CTA and mRCT with combined loss of active elevation and internal rotation (CLEIR).

METHODS

This retrospective cohort study included patients who underwent RSA with a lateralized design and had CLEIR between October 2014 and January 2019. Two groups were classified: patients who underwent RSA alone (group R, n = 36) and patients who underwent RSA with aLDTM tendon transfer (group T, n = 24). Clinical outcomes, including the visual analog scale score, Constant score, American Shoulder and Elbow Surgeons score, active range of motion, score for activities of daily living requiring active internal rotation (ADLIR), and ability to perform toileting activity, were compared. Moreover, radiologic outcomes and complications were compared.

RESULTS

The mean follow-up period was 36.8 ± 11.6 months (range, 24-67 months). Both group R and group T showed significant improvements in clinical scores and active range of motion preoperatively and postoperatively. In group T, the Constant score (65.2 ± 7.5 vs. 58.1 ± 12.3, P = .008), ADLIR score (26.1 ± 3.1 vs. 20.3 ± 5.0, P < .001), internal rotation level with the arm behind the back (P < .001), and subscapularis-specific physical examination findings (P < .001) were significantly better than in group R. However, no significant difference in the American Shoulder and Elbow Surgeons score, forward flexion, and external rotation at 0° and 90° of abduction were found at final follow-up. Transient axillary nerve palsy was found in 2 patients in group T. However, there were no significant differences in complication rates between 2 groups.

CONCLUSION

Lateralized RSA with aLDTM tendon transfer for patients with CTA and mRCT with CLEIR restored shoulder function and improved clinical outcomes, especially the ability to perform ADLIR and toileting activity.

Does subscapularis integrity influence outcome following latissimus dorsi tendon transfer for irreparable cuff tears? A comparative series of 48 patients

Background

Latissimus dorsi tendon transfer (LDTT) remains a surgical option for massive irreparable rotator cuff tears. Despite a lack of comparative studies, subscapularis insufficiency has been reported as a contraindication. This study investigated the clinical outcome at a minimum 2-years post-surgery, in patients undergoing LDTT with varied subscapularis integrity.

Methods

This retrospective study included 48 patients, of which 22 underwent LDTT with an intact subscapularis (age 56.9 years, review time 79.6 months, males 68.2%) and 26 with partial (16 patients) or full-thickness (10 patients) subscapularis tearing (age 57.4 years, review time 73.3 months, males 73.1%) between 2004 and 2018. Pre-operative imaging ascertained subscapularis status. Outcomes included the Upper Extremity Functional Index (UEFI), Global Rating of Change (GRC) and patient satisfaction.

Results

No significant group differences were observed in age (p = 0.617) or review time (p = 0.555), nor the UEFI (intact 69.6, not intact 67.0, p = 0.265) or GRC (intact 3.6, not intact 2.9, p = 0.265). High levels of patient satisfaction were observed in both groups for pain relief, improving the ability to undertake daily and recreational activities, and overall satisfaction (intact 95.5-100.0%, not intact 92.3-96.2%).

Conclusion

LDTT resulted in encouraging clinical scores and high satisfaction levels, irrespective of the degree of untreated, underlying subscapularis integrity.

Level of evidence

Therapeutic Level III.

Treatment of rotator cuff tears: a systematic review and meta-analysis

BACKGROUND

There is ongoing controversy regarding optimal treatment for full-thickness rotator cuff tears. Given that the evidence surrounding the use of various treatment options has expanded, an overall assessment is required.

OBJECTIVES

The following were compared to determine which resulted in improved patient-reported function, pain, and reoperation rates for each: (1) double-row (DR) fixation and single-row (SR) fixation in arthroscopic cuff repair; (2) latissimus dorsi transfer (LDT) with lower trapezius transfer (LTT), partial rotator cuff repair, and superior capsular reconstruction (SCR); and (3) early and late surgical intervention.

METHODS

Medline, Embase, and Cochrane were searched through to April 20, 2021. Additional studies were identified from reviews. The following were included: (1) All English-language randomized controlled trials (RCTs) in patients ≥18 years of age comparing SR and DR fixation, (2) observational studies comparing LDT with LTT, partial repair, and SCR, and (3) observational studies comparing early vs. late treatment of full-thickness rotator cuff tears.

RESULTS

A total of 15 RCTs (n = 1096 randomized patients) were included in the meta-analysis of SR vs. DR fixation. No significant standardized mean differences in function (0.08, 95% confidence interval [CI] -0.09, 0.24) or pain (-0.01, 95% CI -0.52, 0.49) were observed. There was a difference in retear rates in favor of DR compared with SR fixation (RR 1.56, 95% CI 1.06, 2.29). Four studies were included in the systematic review of LDT compared with a surgical control. LDT and partial repair did not reveal any differences in function (-1.12, 95% CI -4.02, 1.78) on comparison. A single study compared arthroscopically assisted LDT to LTT and observed a nonstatistical difference in the Constant score of 14.7 (95% CI -4.06, 33.46). A single RCT compared LDT with SCR and revealed a trend toward superiority for the Constant score with SCR with a mean difference of -9.6 (95% CI -19.82, 0.62). Comparison of early vs. late treatment revealed a paucity of comparative studies with varying definitions of "early" and "late" treatment, which made meaningful interpretation of the results difficult.

CONCLUSION

DR fixation leads to similar improvement in function and pain compared with SR fixation and results in a higher healing rate. LDT transfer yields results similar to those from partial repair, LTT, and SCR in functional outcomes. Further study is required to determine the optimal timing of treatment and to increase confidence in these findings. Future trials of high methodologic quality comparing LDT with LTT and SCR are required.

[Latissimus dorsi transfer with a modified single-incision Herzberg technique and description of its arthroscopic advancement]

OBJECTIVE

Latissimus dorsi transfer aims to reduce pain and improve function for irreparable tears of the posterosuperior rotator cuff by restoring the transversal force couple to improve external rotation and delaying superior migration of the humeral head.

INDICATIONS

Surgery is advocated in patients with unbearable shoulder pain and limited external rotation caused by an irreparable posterosuperior rotator cuff tear. Usually, a latissimus transfer is recommended in the presence of superior migration of the humeral head, higher grade fatty infiltration of the rotator cuff and a restriction of range of motion and strength for abduction and external rotation. Advantages of the arthroscopically assisted technique are the missing need of detaching the deltoid from its origin, smaller incisions and therapy of concomitant intraarticular lesions.

CONTRAINDICATIONS

Little pain and sufficient shoulder function in massive posterosuperior rotator cuff tears do not necessitate latissimus transfer. In the presence of subscapularis tears, osteoarthritis and deltoid dysfunction as well as shoulder stiffness tendon transfer are associated with inferior clinical outcomes.

SURGICAL TECHNIQUE

Surgery is performed in prone position. The incision is made about 5 cm caudal of the posterolateral corner of the acromion and extends over 6 cm at the inferior border of the deltoid muscle. After exploration and protection of the axillary and radial nerve the latissimus tendon is peeled off of the humerus. The medial part of the latissimus is then mobilized to gain length for the later transfer. Afterwards the footprint of the infraspinatus is visualized and debrided. Two or three suture anchors are placed into the posterosuperior aspect of the greater tuberosity. The sutures are stitched through the tendon in a horizontal mattress stitch configuration and the tendon tied onto the bone. In arthroscopic advancement, the patient is placed in an upright beach-chair position with the arm attached to an arm holder. After debridement of the supraspinatus and infraspinatus footprint, arthroscopic preparation at the anterior border of the subscapularis tendon is performed. The latissimus tendon is visualized and detached with electrocautery. Afterwards the interval between posterior rotator cuff and deltoid muscle is prepared to allow the transfer of the latissimus tendon to the posterosuperior footprint. This marks the transition to the open approach, in which the arm is placed in a flexed and internally rotated position.

POSTOPERATIVE MANAGEMENT

Immobilization in a shoulder sling for 3 weeks. Early passive range of motion (ROM: flexion 30°, internal rotation 60°, abduction 0°, external rotation 0°) was immediately allowed. After 3 weeks, passive ROM was increased to 90° of flexion, 60° of abduction, whereas external rotation was still restricted. After 7 weeks, free passive ROM and after 8 weeks active ROM (assisted) were allowed.

RESULTS

In all, 67 patients (mean age 63 years) were examined 54 months (± 28) after open transfer of the latissimus dorsi tendon. Constant score improved from 24 (± 6) points to 68 (± 17) points. Active flexion increased from 83° (± 47°) to 144° (± 35°), abduction from 69° (± 33°) to 134° (± 42°) and external rotation from 24° (± 18°) to 35° (± 21°). The VAS score decreased from 6.3 (± 1.1) to 1.8 (± 2). However, osteoarthritis worsened over time and the Hamada-Fukuda stage increased from 1.4 to 2.1 and the acromihumeral distance decreased from 7.9 (± 2.6) to 5.1 (± 2.2) at final follow-up.

Arthroscopic debridement for management of massive, irreparable rotator cuff tears: a systematic review of outcomes

Background

Surgical management of massive irreparable rotator cuff tears remains controversial. Arthroscopic debridement (AD) has shown promising results especially in the population older than 65 years; however, there is no consensus on the benefits of various AD procedures. The aim of this systematic review was to evaluate the functional midterm to long-term outcomes in patients treated with AD in combination with subacromial decompression, biceps tenotomy, tuberoplasty, or bursectomy, without repair of the rotator cuff tear.

Methods

A comprehensive search was performed in PubMed, Cumulative Index to Nursing and Allied Health Literature (CINAHL), and Cochrane databases for studies reporting clinical outcomes of AD of massive rotator cuff tears. Quality was determined using the Methodological Index for Nonrandomized Studies (MINORS) criteria by two independent reviewers. Pooled frequency-weighted means and standard deviations were calculated for patient-reported outcomes.

Results

Sixteen articles containing 643 patients and 662 shoulders met the eligibility criteria. The mean age at the time of surgery was 65.9 ± 4.4 years with a mean follow-up period of 46.5 ± 27.3 months. There was notable clinically significant improvement across all patient-reported outcome scores postoperatively: Constant 70.4 ± 8.9 (P value = .06), University of California, Los Angeles ultrasonography 26.7 ± 5.2 (P value = .001), American Shoulder and Elbow Surgeons score 71.7 ± 2.1 (P value = .12), Disabilities of the Arm, Shoulder, and Hand score 35.3, and visual analog score 1.7 ± 0.9. Forty-nine patients (7%) required reoperation, which most commonly was a reverse total shoulder arthroplasty for the development of rotator cuff arthropathy.

Conclusion

Arthroscopic debridement with a combination of subacromial decompression, tuberoplasty, subacromial bursectomy, and biceps tenotomy, for treatment of massive irreparable rotator cuff tears, produces good functional outcomes and improvement in pain at mid to long term follow up for the low-demand population greater than 65 years of age looking for pain relief over substantial increase in function.

Treatment Options for Massive Irreparable Rotator Cuff Tears

PURPOSE OF REVIEW

Massive irreparable rotator cuff tears present a significant challenge to the orthopedic surgeon. No single treatment, particularly among joint-preserving options, has been shown to be superior. The purpose of this review is to discuss recent advances in the treatment of massive irreparable rotator cuff tears, including partial repair with and without graft augmentation, interposition grafts, superior capsule reconstruction, subacromial balloon spacers, tendon transfer, and reverse total shoulder arthroplasty. We will also offer guidance on surgical indications based on our clinical experience.

RECENT FINDINGS

Partial repair may offer reasonable clinical improvement for patients with lower preoperative function despite high re-tear rates. Additionally, several types of interposition grafts have shown promising short-term results and may outperform repair alone. Subacromial balloon spacers may lead to clinical improvement, especially in patients without glenohumeral osteoarthritis or pseudoparalysis, and recently received FDA approval for use in the USA. Superior capsule reconstruction is a technically demanding procedure that appears to produce excellent short-term results particularly when performed at high volume, but long-term studies in heterogeneous study groups are needed. Tendon transfers improve function by restoring force coupling in the shoulder, offering a promising option for younger patients. Reverse total shoulder arthroplasty (RTSA) is a reliable option for treatment of irreparable cuff tears in elderly patients with lower functional demands. Irreparable cuff tears remain a difficult condition to treat. Recommended treatment for younger patients without glenohumeral osteoarthritis is particularly controversial. For older patients with low-demand lifestyles and glenohumeral osteoarthritis, RTSA is an effective treatment option. For all discussed procedures, patient selection appears to play a critical role in clinical outcomes.

Superior Capsular Reconstruction With Autologous Fascia Lata Using a Single Lateral-Row Technique Is an Effective Option in Massive Irreparable Rotator Cuff Tears: Minimum 2-Year Follow-Up

PURPOSE

The purpose of this study was to evaluate clinical and radiologic outcomes of arthroscopic superior capsular reconstruction (ASCR) with fascia lata autograft in patients with irreparable rotator cuff tears (IRCTs) performed using a single lateral-row fixation technique.

METHODS

We studied a retrospective case series of patients with large or massive IRCTs for ASCR with fascia lata autograft. Clinical outcomes were evaluated using the Visual Analog Scale (VAS) and the Constant score. Healing of the graft was assessed by magntic resonance imaging or ultrasound. Acromiohumeral distance was evaluated by radiographs.

RESULTS

Thirty-one patients with an average age of 61 years and an average follow-up of 35 months (24-51 months) underwent ASCR with fascia lata autograft. There was a significant improvement in VAS (7.7-0.7), Constant score (36.0-78.7), forward elevation (115°-171°), external rotation (33°-50°), strength (0.3 kg-2.3 kg), and acromiohumeral distance (6.1 mm-8.6 mm) (P < 0.001). Graft failure was present in 13.8% of patients, as shown by magnetic resonance imaging (26 patients) or ultrasound (3 patients). Patients with failed ASCR showed worse Constant scores (68.5.8 vs 80.2, P = 0.007), worse VAS (2.5 vs 0.4, P = 0.00002), worse external rotation (20° vs 54°, P = 0.004), lower acromiohumeral distance (5mm vs 9mm, P = 0.007), and a high association with the presence of os acromiale (χ²P = 0.003). No revision or subsequent surgical procedures were required.

CONCLUSIONS

ASCR, with autologous fascia lata and single lateral row configuration, is an effective option in irreparable rotator cuff tears and results in clinical and radiologic improvement.

LEVEL OF EVIDENCE

Level IV, retrospective case series.

Clinical outcomes of latissimus dorsi tendon transfer and superior capsular reconstruction for irreparable rotator cuff tears: a systematic review

BACKGROUND

Functionally irreparable rotator cuff tears (FIRCTs) present an ongoing challenge to the orthopedic surgeon. The aim of this systematic review was to critically compare the outcomes of three latissimus dorsi tendon transfer (LDT) techniques and two superior capsular reconstruction (SCR) techniques in treatment of FIRCTs.

METHODS

A systematic review of studies evaluating the outcome of FIRCT treatment was performed via a search of four databases in April 2020. Each included study was reviewed in duplicate by two reviewers for evaluation of methodological quality. The treatments analyzed were arthroscopic LDT (aLDT), open LDT Gerber technique (oLDTG), open LDT L'Episcopo technique (oLDTL), SCR with allograft (SCR-Allo), and SCR with autograft (SCR-TFL). Demographics, range of motion, patient-reported outcome measures, radiographic acromiohumeral distance (AHD), treatment failures, and revisions were recorded.

RESULTS

Forty-six studies (1287 shoulders) met criteria for inclusion. Twenty-three studies involved open latissimus transfer, with 445 shoulders undergoing oLDTG with mean follow-up of 63.2 months and 60 patients undergoing oLDTL with mean follow-up of 51.8 months. Ten studies (n = 369, F/U 29.2mo) reported on aLDT. Seven studies (n = 253, F/U 16.9mo) concerned SCR-Allo, and six studies (n = 160, F/U 32.mo) reported on SCR-TFL. Range of motion and subjective outcome scores improved in all techniques with no differences across treatments. Both SCR methods provided greater improvement in AHD than open LDT methods (p < 0.01). The re-tear rates were lower in both oLDT groups compared to the SCR groups (p = 0.03). Clinical failure rates were higher in the SCR-Allo and oLDTG groups, while overall treatment failures were lowest in oLDTL compared to all four other groups.

CONCLUSION

SCR techniques were associated with improved short-term radiographic acromiohumeral distance, while the open LDT techniques had lower tendon re-tear and treatment failure rates. All techniques resulted in improved clinical outcomes and pain relief compared to preoperative levels with no differences across techniques.

LEVEL OF EVIDENCE IV

Systematic review of case series and cohort studies.

Bilateral total shoulder arthroplasty: A systematic review of clinical outcomes

BACKGROUND

The purpose of this study was to describe the clinical outcomes following bilateral total shoulder arthroplasty (TSA).

METHODS

A systematic search of the PubMed, Embase, and Cochrane Library databases following PRISMA guidelines was performed. English-language literature published from 2010 to 2018 analyzing bilateral TSA (anatomic and/or reverse) with a minimum one-year follow-up was reviewed by two independent reviewers. Study quality was evaluated with the Modified Coleman Methodology Score and the methodological index for non-randomized studies score.

RESULTS

Eleven studies (1 Level II, 3 Level III, 7 Level IV) with 292 patients were included. Two studies reported on bilateral anatomic TSA (n = 54), six reported on bilateral reverse TSA (RTSA; n = 168), two reported on anatomic TSA with contralateral RTSA (TSA/RTSA; n = 31), and one compared bilateral anatomic TSA (n = 26) and bilateral RTSA (n = 13). Among studies, mean revision rate ranged from 0% to 10.53% and mean complication rate ranged from 4.9% to 31.3%. At final follow-up, patients experienced significant overall improvements in range of motion and patient-reported outcome score measurements. However, bilateral anatomic TSA resulted in greater improvements in external rotation compared to bilateral RTSA. Overall patient satisfaction was 91.0%.

CONCLUSION

The available data indicate that bilateral TSA allows for functional and pain improvements and result in high patient satisfaction.

LEVEL OF EVIDENCE

IV.

Feasibility of lower trapezius and rhomboid minor transfer for irreparable subscapularis tears: an anatomic cadaveric study

Background

Previously reported outcomes after tendon transfers to reconstruct the subscapularis are unpredictable and often unsatisfactory, especially in the presence of anterior humeral head subluxation. We studied the anatomic feasibility of the lower trapezius and the rhomboid minor transfer to reconstruct irreparable tendon tears of the subscapularis. The aim of this study was to determine the feasibility of lower trapezius and rhomboid minor transfer to reconstruct irreparable subscapularis tendon tears.

Materials and methods

We measured the tendons dimensions, muscles excursions, distances to pedicles, and dissection needed to complete a successful lower trapezius and/or rhomboid minor transfer to the subscapularis footprint in 10 cadaveric shoulders. The transferred muscles were detached distally, augmented with a semitendinosus and gracilis autograft, and passed anteriorly between the scapula and the subscapularis remnant through a small serratus window to reach the lesser tuberosity. The risk of pedicle compression was subjectively assessed in all cases.

Results

The trapezius and rhomboid tendons were asymmetric with an average length of 37.6 mm and 21.7 mm, an average width of 63 mm and 33.4 mm, respectively. The mean distances from each distal insertion to the lesser tuberosity were 109 mm for the trapezius and 144 mm for the rhomboid. Mean distances from tendon to pedicle were 57.9 mm and 33.1 mm, respectively. The mean size of the necessary serratus window was 49.4 mm, which was measured at maximal excursion achieved at maximal external rotation 90° representing two digitations. All of the tendon transfers were feasible, and the risk of pedicle compression was 20% for the trapezius and 10% for the rhomboid. Superior migration of the transfer was observed during passive external rotation if the insertion point was too high.

Conclusions

Transfer of the lower trapezius and rhomboid minor to the lesser tuberosity to reconstruct an irreparable subscapularis tear is feasible without extensive dissection and with a low risk of nerve compression. We recommend not to transfer the rhomboid minor routinely, owing to the risk of tendon luxation after external rotation of the shoulder.

Does Margin Convergence Reverse Pseudoparalysis in Patients with Irreparable Rotator Cuff Tears?

BACKGROUND

Margin convergence has been shown to restore muscle tension in a cadaveric model of a rotator cuff tear. However, the clinical utility of this technique remains uncertain for patients with pseudoparalysis caused by an irreparable rotator cuff tear.

QUESTIONS/PURPOSES

(1) For patients with massive irreparable rotator cuff tears, in what proportion of patients does margin convergence reverse pseudoparalysis? (2) In patients with massive irreparable rotator cuff tears, does margin convergence improve American Shoulder and Elbow Surgeons (ASES) scores? (3) What is the survivorship free from MRI evidence of retear after margin convergence?

METHODS

Between 2000 and 2015, we treated 203 patients for pseudoparalysis with a rotator cuff tear. Pseudoparalysis was defined as active elevation less than 90° with no stiffness, which a physical therapist evaluated in the sitting position using a goniometer after subacromial injection of 10 cc lidocaine to eliminate pain. Of those, we considered patients who underwent at least 3 weeks of unsuccessful nonoperative treatment in our hospital as potentially eligible. Twenty-one percent (43 of 203) who either improved or were lost to follow-up within 3 weeks of nonoperative treatment were excluded. A further 12% (25 of 203) were excluded because of cervical palsy, axillary nerve palsy after dislocation or subluxation, and development of severe shoulder stiffness (passive shoulder elevation < 90°). Repair was the first-line treatment, but if tears were considered irreparable with the torn tendon unable to reach the original footprint after mobilizing the cuff during surgery, margin convergence was used. When margin convergence failed, the procedure was converted to hemiarthroplasty using a small humeral head to help complete the repair. Therefore, 21% (42 of 203) of patients treated with regular repair (18% [36 of 203]) or hemiarthroplasty (3% [6 of 203]) were excluded. That left 93 patients eligible for consideration. Of those, 13 patients were lost before the minimum study follow-up of 2 years or had incomplete datasets, and 86% (80 of 93) were analyzed (49 men and 31 women; mean age 68 ± 9 years; mean follow-up 26 ± 4 months). Seventy-six percent (61 of 80) were not evaluated in the last 5 years. We considered reversal of pseudoparalysis as our primary study outcome of interest; we defined this as greater than 90° active forward elevation; physical therapists in care measured this in the sitting position by using goniometers. Clinical outcomes were evaluated based on the ASES score from chart review, active ROM in the shoulder measured by the physical therapists, and the 8-month Kaplan-Meier survivorship free from MRI evidence of retear graded by the first author.

RESULTS

Pseudoparalysis was reversed in 93% (74 of 80) patients, and improvement in ASES scores was observed at the final follow-up (preoperative 22 ± 10 to postoperative 62 ± 21, mean difference 40 [95% CI 35 to 45]; p < 0.01). The 8-month Kaplan-Meier survivorship free from MRI evidence of retear after surgery was 72% (95% CI 63% to 81%). There were no differences in clinical scores between patients with and without retears (intact ASES 64 ± 24, re-tear ASES 59 ± 10, mean difference 6 [95% CI -5 to 16]; p = 0.27).

CONCLUSION

Margin convergence can be a good option for treating patients with pseudoparalysis and irreparable rotator cuff tears despite the relatively high retear rates. The proportion of pseudoparalysis reversal was lower in patients with three-tendon involvement. Further studies will be needed to define the appropriate procedure in this group.

LEVEL OF EVIDENCE

Level IV, therapeutic study.

Superior capsular reconstruction using a porcine dermal xenograft for irreparable rotator cuff tears: outcomes at minimum two-year follow-up

PURPOSE

To evaluate midterm outcomes of arthroscopic superior capsular reconstruction (SCR) using a decellularized porcine dermal xenograft in patients with massive, irreparable rotator cuff tears and to determine the influence of concomitant, repairable subscapularis tears.

METHODS

This is a retrospective study of 56 patients with a minimum 2-year follow-up. Preoperative and postoperative range of motion, American Shoulder and Elbow Surgeons score, Subjective Shoulder Value, and visual analog score for pain were measured. Postoperative data were collected at 3, 6, 12, 24, and 36 months.

RESULTS

Of the 56 patients who underwent arthroscopic SCR, there were 39 men and 17 women. The mean age at operation was 65 ± 9 years, and the mean follow-up was 34 ± 8 months. The mean preoperative American Shoulder and Elbow Surgeons improved from 41 ± 19 to 78 ± 18 at 24 weeks, to 86± 16 at 12 months, and to 90±9 at 24 months, P < .0001. Similarly, the mean preoperative Subjective Shoulder Value improved from 39 ± 17 to 74 ± 18 at 24 weeks, to 80 ± 18 at 12 months, and to 80 ± 11 at 24 months, P < .0001. The mean preoperative visual analog score improved from 6.5 ± 2.1 to 1.4 ± 2.2 at 24 weeks, to 0.7± 1.1 at 12 months, and to 0.2 ± 0.4 at 24 months, P < .0001. There were no differences in outcome scores between patients with intact vs. repaired subscapularis. Similarly, no statistically significant differences were found in forward flexion or external rotation after SCR between patients with an intact vs. repaired subscapularis. Failure of the SCR graft was observed on magnetic resonance imaging in 14 patients, 4 of whom opted for revision to reverse shoulder arthroplasty. Eleven patients were truly pseudoparalytic before surgery; in 5 cases, pseudoparalysis was reversed after SCR.

CONCLUSIONS

SCR can alleviate pain and disability from irreparable rotator cuff tears and provide significant improvements in shoulder function; however, the xenograft technique resulted in inconsistent reversal of true pseudoparalysis. No difference was found between patients who required concomitant subscapularis repair vs. those who did not.

The latissimus dorsi tendon functions as an external rotator after arthroscopic-assisted transfer for massive irreparable posterosuperior rotator cuff tears

PURPOSE

Latissimus dorsi tendon transfer is a surgical option for the treatment of massive irreparable posterosuperior rotator cuff tear. Whether a favourable clinical outcome is due to the latissimus dorsi muscle contraction rather than the passive tenodesis effect remains to be confirmed. The purpose of the current case-control study was to evaluate the shoulder kinematics and latissimus dorsi activation after latissimus dorsi tendon transfer.

METHODS

Eighteen patients suffering from irreparable rotator cuff tear that underwent latissimus dorsi tendon transfer and 18 healthy individuals were examined using a 3D kinematic tracking system and electromyography. Active maximal flexion-extension and abduction-adduction of the humerus were measured for the operated and the contralateral shoulder of the patients and the shoulder of healthy individuals to evaluate the range of motion (ROM) and scapulohumeral rhythm. Electromyographic comparison of isometric contraction between the latissimus dorsi of the operated and contralateral shoulder was carried out.

RESULTS

After arthroscopic-assisted latissimus dorsi tendon transfer, patients showed comparable flexion and abduction ROM to their asymptomatic contralateral shoulders and to the shoulders of healthy individuals. Significantly higher scapular ROM values were found between the latissimus dorsi tendon transfer side and the shoulders of healthy individuals. While performing external rotation with 0° shoulder abduction, a greater percentage of the electromyographic peak value (p = 0.047) and a higher latissimus dorsi internal/external rotation ratio (p = 0.004) were noted for the transferred muscle in comparison to the contralateral shoulder.

CONCLUSION

Although the arthroscopic-assisted latissimus dorsi tendon transfer failed to normalize scapulothoracic joint movements of patients, a functional latissimus flap and a shoulder ROM similar to the contralateral side or the shoulder of healthy individuals can be expected after this procedure in patients with massive irreparable posterosuperior rotator cuff tear.

LEVEL OF EVIDENCE

III.

The use of a synthetic shoulder patch for large and massive rotator cuff tears - a feasibility study

Background

The aim of this study was to explore the feasibility of using a non-absorbable biocompatible polyester patch to augment open repair of massive rotator cuff tears (Patch group) and compare outcomes with other treatment options (Non-patch group).

Methods

Participants referred to orthopaedic clinics for rotator cuff surgery were recruited. Choice of intervention (Patch or Non-patch) was based on patient preference and intra-operative findings. Oxford Shoulder Score (OSS), Shoulder Pain and Disability Index (SPADI), and Constant score were completed at baseline and 6 months. Shoulder MRI was performed at baseline and 6 months to assess fat fraction and Goutallier classification pre- and post- treatment. Feasibility outcomes (including retention, consent and missing data) were assessed.

Results

Sixty-eight participants (29 in the Patch group, 39 in Non-patch group) were included (mean age 65.3 years). Conversion to consent (92.6%), missing data (0% at baseline), and attrition rate (16%) were deemed successful feasibility endpoints. There was significant improvement in the Patch group compared to Non-patch at 6 months in OSS (difference in medians 9.76 (95% CI 2.25, 17.29) and SPADI: 22.97 (95% CI 3.02, 42.92), with no substantive differences in Constant score. The patch group had a higher proportion of participants improving greater than MCID for OSS (78% vs 62%) and SPADI (63% vs 50%) respectively. Analysis of the 48 paired MRIs demonstrated a slight increase in the fat fraction for supraspinatus (53 to 55%), and infraspinatus (26 to 29%) at 6 months. These differences were similar and in the same direction when the participants were analysed by treatment group. The Goutallier score remained the same or worsened one grade in both groups equally.

Conclusions

This study indicates that a definitive clinical trial investigating the use of a non-absorbable patch to augment repair of massive rotator cuff tears is feasible. In such patients, the patch has the potential to improve shoulder symptoms at 6 months.

Trial registration

ISRCTN, ISRCTN79844053, Registered 15th October 2014 (retrospectively registered).

Surgical Options for Failed Rotator Cuff Repair, except Arthroplasty: Review of Current Methods

Although the prevalence of rotator cuff tears is dependent on the size, 11% to 94% of patients experience retear or healing failure after rotator cuff repair. Treatment of patients with failed rotator cuff repair ranges widely, from conservative treatment to arthroplasty. This review article attempts to summarize the most recent and relevant surgical options for failed rotator cuff repair patients, and the outcomes of each treatment, except arthroplasty.

Muscle Activity of the Latissimus Dorsi after Tendon Transfer in Patients with Rotator Cuff Tears

Background: Massive irreparable posterosuperior rotator cuff tears may result in the loss of external rotation. Most of the patients with posterosuperior rotator cuff tears suffer from a restriction in their daily life actions. Latissimus dorsi tendon transfer (LDTT) is a method to restore abduction and external rotation in these patients. However, the behavior of the LD after the transfer is not clear yet. Few studies have analyzed the activity of the LD after transfer. The goal of this study was to examine the function of the LD postoperatively in follow-up examinations during activities of daily life (ADLs) and during different movements evaluated by measuring the range of motion (ROM). Methods: We examined 12 patients 4.3 years (1–9 years) after LDTT, using simultaneous 3D motion analysis and surface Electromyography (sEMG) of 12 muscle parts; the opposite, nonaffected side was assessed as a control. The measurement protocol included two standardized movements (exorotation with an adducted arm and exorotation with 90° abduction) as well as two ADLs (combing hair and perineal care). Results: An average of 4.3 years (1–9 years) after LDTT, 9 of the 12 subjects showed EMG activity in the transferred LD during glenohumeral external rotation. During the endorotation phase, either little activity was registered or only the pectoralis major was active. During the ADLs, 6 out of 12 subjects showed EMG activity in the transferred LD while “combing hair”, whereas all subjects showed EMG activity during perineal care. Conclusion: The LD showed partial activity in its new role as an exorotator, but no clear difference was observed between some of the movements as well as in comparison with the healthy shoulder. Further studies will need to be conducted to better differentiate voluntary contractions and co-contractions as well as tension and extension in the muscle.

3D motion analysis of latissimus dorsi tendon transfer in patients with posterosuperior rotator cuff tears: Analysis of proprioception and the ability to perform ADLS

BACKGROUND

Massive irreparable posterosuperior rotator cuff tears may result in a loss of external rotation. Most of these patients lose their ability to perform activities of daily living (ADLs), especially where external rotation and abduction are needed. Latissimus dorsi tendon transfer (LDTT) is a method to restore abduction and external rotation in patients with posterosuperior rotator cuff tears. There are no objective data concerning whether LDTT can restore range of motion (ROM), especially in performing ADLs and if proprioception changes after LDTT.

METHODS

We examined 12 patients 4.2 years (1-9 years) after LDTT with simultaneous 3D motion analysis; the opposite, nonaffected side was assessed as control. The measurement protocol included maximum values in flexion/extension, abduction/adduction, internal/external rotation in 0° and in 90° flexion and in 90° abduction. To evaluate competences, we measured seven activities of daily life and examined the proprioceptive ability using an active angle reproduction test.

RESULTS

In total, 4.2 years (1-9 years) after LDTT there was no significant difference in flexion/extension and abduction/adduction compared to the healthy side. Maximum external rotation was significantly reduced compared to the opposite side. Eleven patients (85%) were able to perform all ADL. Proprioceptive ability did not differ from the healthy side.

CONCLUSION

LDTT cannot fully restore a patient's ability for external rotation after a posterosuperior rotator cuff tear. However, 4.2 years after surgery, 85% of the patients are able to perform all ADLs. Proprioceptive ability is not affected by the transfer.

High Clinical Failure Rate After Latissimus Dorsi Transfer for Revision Massive Rotator Cuff Tears

PURPOSE

To evaluate the clinical success rate, along with risk factors for failure, in patients undergoing latissimus dorsi transfer for the treatment of massive, irreparable, previously failed rotator cuff tears.

METHODS

We performed a retrospective chart review of prospectively collected data from an institutional shoulder outcome registry. All patients who underwent latissimus dorsi transfer for previously failed rotator cuff repair between 2006 and 2013 with a minimum follow-up period of 1 year were included in the study. The indications for inclusion were large (≥2 tendons), retracted, chronic rotator cuff tears with fatty infiltration or atrophy for which prior surgical repair had failed. Preoperative and postoperative American Shoulder and Elbow Surgeons (ASES) and Simple Shoulder Test scores were collected, along with postoperative Single Assessment Numerical Evaluation scores. Complications and clinical failures (Δ in ASES score <17) were recorded. Patient demographic and tear characteristics were evaluated as potential risk factors for failure.

RESULTS

A total of 22 patients (mean age, 53 ± 6 years) were included in the study, with a mean follow-up time of 3.4 ± 1.1 years. Over 63% of patients (n = 14) reported undergoing 2 or more prior failed rotator cuff repairs. Patients undergoing latissimus dorsi transfer showed significant improvements in ASES scores (from 35.2 ± 21.9 preoperatively to 55.8 ± 22.9 postoperatively, P = .001), Simple Shoulder Test scores (from 3.5 ± 3.1 preoperatively to 5.2 ± 3.4 postoperatively, P = .002), and pain scores (from 5.9 ± 2.8 preoperatively to 4.6 ± 4.3 postoperatively, P = .002) at final follow-up. The complication rate after latissimus transfer was 27%. The rate of revision to reverse total shoulder arthroplasty was 13.6% (n = 3) after a mean of 2.7 years, and the clinical failure rate was 41% (n = 9) at final follow-up. An acromiohumeral interval of less than 7 mm (P = .04) and high-grade fatty infiltration (grade 3 or greater, P = .004) were significant preoperative risk factors for clinical failure.

CONCLUSIONS

Latissimus dorsi tendon transfer resulted in a clinical failure rate of 41% and complication rate of 27%, with an acromiohumeral interval of less than 7 mm and high-grade fatty infiltration being associated with postoperative failure.

LEVEL OF EVIDENCE

Level IV.

Latissimus dorsi transfer for massive posterosuperior rotator cuff tears: what affects the postoperative outcome?

BACKGROUND

The management of irreparable posterosuperior rotator cuff tears (IPSRCTs) in young active individuals is still a challenge. The aim of this study was to evaluate the influence of sex, surgical technique, previous surgical procedures, tear genesis, and presence of a preoperative external rotation lag sign on the functional outcome after latissimus dorsi transfer (LDT) for IPSRCTs.

METHODS

Retrospectively, all patients with IPSRCTs treated with LDT during a 10-year period were followed up. Preoperative evaluation included the visual analog scale (VAS) score, range of motion, and the Constant score (CS). Postoperatively, the VAS score, range of motion, CS, American Shoulder and Elbow Surgeons score, and Subjective Shoulder Value were recorded. Preoperative and postoperative radiologic evaluation was performed using the Hamada-Fukuda classification and the acromiohumeral interval.

RESULTS

In total, 67 of 79 patients (85%), with a mean age of 63 years, were available for follow-up at 54 ± 28 months. The CS improved from 24 ± 6 points preoperatively to 68 ± 17 points at follow-up (P < .001). Active flexion increased from 83° ± 47° to 144° ± 35°; abduction, from 69° ± 33° to 134° ± 42°; and external rotation, from 24° ± 18° to 35° ± 21°. Postoperatively, the Subjective Shoulder Value was 69% ± 19% and the American Shoulder and Elbow Surgeons score was 76 ± 21. The VAS score decreased from 6.3 ± 1.1 to 1.8 ± 2 (P < .001). Abduction strength increased from 0.4 ± 0.4 kg to 3.6 ± 2.2 kg (P < .001). The acromiohumeral interval decreased from 7.9 ± 2.6 mm to 5.1 ± 2.2 mm, and arthropathy worsened from Hamada-Fukuda stage 1.4 to stage 2.1. The rate of conversion to a reverse prosthesis was 6%.

CONCLUSION

LDT represents a reliable and reproducible treatment option with good clinical midterm results after surgical treatment. Sex, genesis, preoperative presence of an external rotation lag sign, and previous surgical procedures do not affect the overall clinical outcome.

[Transfer of latissimus dorsi muscle for irreparable posterosuperior rotator cuff defects in older patients : Medium term results]

OBJECTIVE

Is transfer of the latissimus dorsi muscle (LDT) a good option in older patients with irreparable posterosuperior rotator cuff tears?

MATERIAL AND METHOD

In 2010-2016 a total of 25 patients without glenohumeral arthritis and non-reconstructable supraspinatus and infraspinatus tendons, a recentered glenohumeral joint with remaining function in anteversion and irreparable posterosuperior rotator cuff defects were treated using LDT at the Rummelsberg Hospital. Of the patients 9 (36%) had in the past 1 or more attempts at reconstruction of the rotator cuff. All other patients (64%) underwent a primary reconstruction using LDT. The patients had an average age of 61 years and average follow up of 32 months. Of the 25 patients 24 (96%) were clinically followed up with the constant score (CS) and the visual analogue scale (VAS). The operation was performed in the technique described by Gerber to raise the latissimus dorsi but in the beach-chair position. Follow-up treatment was performed for 6 weeks using the ACRO-Assist splint (shoulder brace) in 90 ° abduction with daily limited external rotation exercises, followed by a regular regular rehabilitation on an outpatient basis.

RESULTS

The average operating time was 112 min (68-199 min). Postoperatively the only complication was an tightly sutured drainage. The preoperative Constantpoint averaged 25 (2-59). The postoperative Constantpoint was 60. The average gain of improvement was 35 points. The age-corrected relative CS was 74 after surgery. Pain perception improved significantly from preoperatively severe to very severe pain to postoperatively minor to no pain. In the VAS score there was a reduction from preoperatively 6 to postoperatively 3 VAS points. The external rotation improved from average 3 points in the CS to 6 points in the CS. The preoperative Constantpoint in patients <60 years (n = 12) was 20, the postoperative 51. The gain was 31 Constantpoints. In patients ≥60 years (n = 12), the preoperative Constantpoint was 31, the postoperative 60. The gain was 29 points. The difference between the age groups was not significant. Previously operatively treated patients (arthroscopic or mini-open reconstruction) all showed an improvement in Constantpoints (26 vs. 32 in primarily non-reconstructed patients); however, on a lower level (45 points in previously operated patients vs. 69 CS points).

CONCLUSION

With appropriate patient selection, a high gain in CS can be achieved even in older patients using latissimus dorsi transfer for irreparable posterosuperior rotator cuff tears. The VAS score and external rotation significantly improved. Previously attempts in rotator cuff reconstruction demonstrated a negative influence on the clinical outcome.

Evaluation of an Incorporated Superior Capsular Reconstruction Graft: A Case Report

CASE

A 66-year-old man presented with 2 years of atraumatic right shoulder pain and difficulty with overhead activities. Radiographs and magnetic resonance imaging demonstrated Hamada stage I changes and a massive irreparable rotator cuff tear involving the supraspinatus and infraspinatus. He underwent superior capsular reconstruction with acellular human dermal matrix (SCR with ADM) allograft. Diagnostic arthroscopy and humeral avulsion of the glenohumeral ligament repair 1 year postoperatively showed that the SCR appeared intact and vascularized.

CONCLUSIONS

This is the first study to confirm visually that SCR with ADM allograft is well-vascularized and intact 1 year post-operatively.

Augmented latissimus dorsi transfer: initial results in patients with massive irreparable posterosuperior rotator cuff tears

BACKGROUND

The surgical treatment of irreparable massive rotator cuff tears is challenging. The purpose of the present study was to report the initial outcomes after a modified latissimus dorsi transfer (LDT) augmented by acellular dermal allograft (ADA).

METHODS

This retrospective study includes 24 patients managed with LDT using ADA augmentation as a bursal-sided onlay between March 2009 and December 2015.

RESULTS

All patients were men with a mean age of 57 years (range 48 years to 70 years). Seven patients had a previously failed rotator cuff repair and ten patients presented with a deficient subscapularis tendon. At last follow-up (mean 27 months), there was a significant improvement in active forward flexion (mean increase 31°; p = 0.016), and abduction by 25° (p = 0.059). The acromiohumeral distance remained stable and the failure rate was low (4%). Neither a history of previous rotator cuff surgery, nor the presence of a subscapularis tear had a negative impact on functional outcome.

CONCLUSIONS

In our cohort of patients, LDT augmented with ADA was a reasonable option for patients with previously failed rotator cuff repair, as well as in the subgroup of patients with a deficient subscapularis tendon.

LEVEL OF EVIDENCE

Level IV: Therapeutic study (case series).

Is augmentation with the long head of the biceps tendon helpful in arthroscopic treatment of irreparable rotator cuff tears?

BACKGROUND

Although various surgical techniques have been used to treat irreparable rotator cuff tears (RCTs), debate remains regarding which treatment is most effective. The purpose of our study was to compare the outcomes of partial rotator cuff repair versus repair with augmentation of the tenotomized long head of the biceps tendon (LHBT).

METHODS

This study included 76 patients with large to massive RCTs. Arthroscopic rotator cuff repair with LHBT augmentation was performed in 39 patients (group I), while partial repair was performed in 37 patients (group II). Clinical and functional outcomes were compared with a visual analog scale for pain and the American Shoulder and Elbow Surgeons score, Constant score, and Korean Shoulder Score. Magnetic resonance imaging was performed 12 months after surgery.

RESULTS

The mean follow-up period was 29.6 ± 7.8 months (range, 24-51 months). Significant improvements in pain and clinical scores were observed in both groups at the last follow-up. However, there were no significant differences in pain, clinical scores, or range of motion between the 2 groups at any time point. Retears were observed in 16 patients in group I (41.0%) and 14 in group II (37.8%, P = .78). Augmented LHBT pathology was observed in 10 patients (25.6%).

CONCLUSIONS

Both partial repair and repair with LHBT augmentation were effective in improving clinical and radiologic outcomes. No significant differences in clinical outcomes or repaired cuff integrity were observed between the groups. The investment of operation time and effort in augmenting the LHBT in the treatment of irreparable RCTs is not recommended.

Anatomic study of pedicled bipolar teres major transfer for irreparable posterosuperior rotator cuff tears

BACKGROUND

Treatment of rotator cuff (RC) tears has not included bipolar muscle-tendon transfers to date. The objective of this study was to verify the feasibility of pedicled bipolar teres major (TM) transfer over and under the long head of the triceps brachii (LHT) and compare its versatility with monopolar transfer in a model of supraspinatus (SS) tears in cadavers.

METHODS

In 6 shoulders of cryopreserved cadavers, we re-created complete SS tears, conducting monopolar and bipolar TM transfers over and under LHT. We compared the morphology of the SS and TM, defect coverage, angle between the transferred TM and major SS axis, and axillary nerve overlap with each technique.

RESULTS

The TM and SS were morphologically similar. Defect coverage was significantly lower with monopolar transfer (12 ± 4 mm) than with bipolar transfer (39 ± 9 mm under the LHT, P = .003, and 38 ± 8 mm over the LHT, P = .004). The bipolar transfer course over the LHT was the nearest to the SS axis (39° ± 11°, P = .005). We found a greater axillary nerve overlap with bipolar transfer under the LHT (27 ± 8 mm) than with bipolar transfer over the LHT (1 ± 2 mm, P = .005) or monopolar transfer (0 mm, P < .001).

CONCLUSION

Bipolar TM transfer is possible without neurovascular pedicle interference, obtaining greater RC defect coverage and the closest path to the SS axis when conducted over the LHT compared with monopolar or bipolar transfer under the LHT. Accordingly, it can be considered an alternative option for the treatment of posterosuperior RC defects.

Comparison of arthroscopically assisted transfer of the latissimus dorsi with or without partial cuff repair for irreparable postero-superior rotator cuff tear

PURPOSE

To evaluate the effect of an additional partial repair in combination with an arthroscopically assisted transfer of the latissimus dorsi (LDT) in massive postero-superior irreparable cuff tear.

MATERIALS AND METHODS

Thirty-one patients (mean age 59.2 years) scheduled for arthroscopically assisted LDT either isolated or in combination with a partial cuff repair for a massive posterior-superior cuff tear were prospectively included between January 2011 and December 2013 at our institution. Seventeen had an isolated transfer (Group A) and 14 had a transfer combined with a partial cuff repair (Group B). Outcome measures included visual analogue scale (VAS), range of motion, strength, constant score, and subjective shoulder value (SSV). Potential predictive factors were analyzed.

RESULTS

At the last follow-up (mean 22 months), patients in Group B had a significantly higher constant score (64 ± 8 versus 58 ± 4 in Group A), range of motion (33 ± 5 versus 29 ± 5 points in Group A), and strength at 90° of abduction (2.5 kg ± 1 in Group B versus 1.9 kg ± 0.9 in Group A). No significant differences were found between both groups regarding pain scores, SSV, and active external rotation. Thirty-seven variables were analyzed and the only factor which was found to be predictive of a bad result was a preoperative SSV < 40 pts. (RR 0.5).

CONCLUSION

Arthroscopically assisted LDT gives better results when combined with a partial repair of the cuff than when it is performed isolated in the treatment of massive irreparable postero-superior rotator cuff tear.

LEVEL OF EVIDENCE

Treatment study, Level II.

Arthroscopic-Assisted Latissimus Dorsi Tendon Transfer for Massive Rotator Cuff Tears: A Systematic Review

Background:

Arthroscopic-assisted latissimus dorsi tendon transfer (LDTT) has shown promising results with good outcomes in patients with massive rotator cuff tears (MRCTs), as reported by individual studies. However, to the best of the authors’ knowledge, no systematic review has been performed to assess the collective outcomes of these individual studies.

Purpose/Hypothesis:

The primary purpose of this study was to assess patient outcomes after arthroscopic-assisted LDTT for the management of MRCTs. The secondary objectives were to report on the management of MRCTs, including diagnostic investigations, surgical decision making, and arthroscopic techniques, as well as to evaluate the quality of evidence of the existing literature. It was hypothesized that nearly all patients were satisfied with arthroscopic-assisted LDTT and that they experienced improvements in pain symptoms, function, and strength after the procedure, with an overall complication rate of less than 10%.

Study Design:

Systematic review; Level of evidence, 4.

Methods:

The databases MEDLINE, Embase, and PubMed were searched from database inception (1946) until August 18, 2017, with titles, abstracts, and full-text articles screened independently by 2 reviewers. Inclusion criteria were English-language studies investigating arthroscopic-assisted LDTT for the management of MRCTs on patients of all ages. Conference papers, book chapters, review articles, and technical reports were excluded. The quality of the included studies was categorized by level of evidence and the Methodological Index for Non-Randomized Studies (MINORS) checklist.

Results:

In total, 8 studies (7 case series [median MINORS score, 7 of 16] and 1 prospective comparative study [median MINORS score, 14 of 24]) were identified; the studies included 258 patients (258 shoulders) with MRCTs treated with LDTT using arthroscopic-assisted techniques. The decision to pursue surgery was based on both clinical findings and investigations in 5 studies, investigations only in 2 studies, and clinical findings only in 1 study. Overall, 88% of patients were satisfied with the results of surgery and experienced significant improvement in their symptoms, including shoulder pain, strength, range of motion, and overall function, over a mean follow-up period of 34.3 months. Overall, there was a low rate of complications (7%) associated with the procedure.

Conclusion:

Arthroscopic-assisted LDTT for MRCTs provides patients with marked improvement in shoulder pain, strength, and function, and the procedure is associated with a low risk of complication. Further high-quality comparative studies are warranted to validate these findings in comparison with other operative techniques.

Treatment Strategy for Irreparable Rotator Cuff Tears

Recently, patients with shoulder pain have increased rapidly. Of all shoulder disorders, rotator cuff tears (RCTs) are most prevalent in the middle-aged and older adults, which is the primary reason for shoulder surgery in the population. Some authors have reported that up to 30% of total RCTs can be classified as irreparable due to the massive tear size and severe muscle atrophy. In this review article, we provide an overview of treatment methods for irreparable massive RCTs and discuss proper surgical strategies for RCTs that require operative management.

Teres major tendon transfer in the treatment of irreparable posterosuperior rotator cuff tears: long-term improvement of shoulder function and pain reduction at eight to 12 years’ follow-up

Aims

Since long-term outcome of teres major tendon transfer surgery for irreparable posterosuperior rotator cuff (RC) tears is largely unknown, the primary aim of this study was to evaluate the long-term outcome of the teres major transfer. We also aimed to report on the results of a cohort of patients with a similar indication for surgery that underwent a latissimus dorsi tendon transfer.

Patients and Methods

Patients and Methods In this prospective cohort study, we reported on the long-term results of 20 consecutive patients with a teres major tendon transfer for irreparable massive posterosuperior RC tears. Additionally, we reported on the results of the latissimus dorsi tendon transfer (n = 19). The mean age was 60 years (47 to 77). Outcomes included the Constant score (CS), and pain at rest and during movement using the Visual Analogue Scale (VAS).

Results

At a mean of ten years (8 to 12) following teres major transfer, the CS was still 23 points (95% confidence interval (CI) 14.6 to 30.9, p < 0.001) higher than preoperatively. VAS for pain at rest (21 mm, 95% CI 4.0 to 38.9, p = 0.016) and movement (31 mm, 95% CI 16.0 to 45.1, p < 0.001) were lower than preoperatively. We also found an increase in CS (32 points, 95% CI 23.4 to 40.2, p < 0.001) and reduction of pain (26 mm, 95% CI 9.9 to 41.8, p = 0.001) six years after latissimus dorsi transfer.

Conclusion

Teres major tendon transfer is a treatment option to gain shoulder function and reduce pain in patients with an irreparable posterosuperior RC tear at a mean follow-up of ten years. The teres major tendon might be a valuable alternative to the commonly performed latissimus dorsi tendon transfer in the treatment of irreparable posterosuperior RC tears. Cite this article: Bone Joint J 2018;100-B:309-17.

Improved external rotation with concomitant reverse total shoulder arthroplasty and latissimus dorsi tendon transfer: A systematic review

BACKGROUND

In conjunction with reverse total shoulder arthroplasty (RSA), latissimus dorsi and teres major (LD-TM) transfer has been advocated in the setting of combined loss of elevation and external rotation. The purpose of this systematic review is to summarize the clinical outcomes following RSA with LD-TM transfer.

METHODS

A search of PubMed, EMBASE, CINAHL, Medline, and Cochrane databases was performed between January 1, 1990 and March 1, 2016 and included articles related to outcomes following RSA with LD-TM transfer. Primary outcomes of interest were constant score, shoulder range of motion, and patient satisfaction. Secondary outcomes of interest included subjective shoulder value, simple shoulder test, activities of daily living requiring external rotation, and visual analog pain score. Additional outcomes evaluated included complications and reoperations. Frequency-weighted values of outcome data were utilized.

RESULTS

Five level IV studies involving 98 shoulders met the inclusion criteria. The mean age of the cohort was 69.1 ± 5.19 years (range 47-85). RSA with LD-TM transfer was performed for rotator cuff arthropathy (94%) or proximal humerus fracture (6%). The average follow-up was 44.5 ± 10.38 months (range 12-105 months). The constant score improved from 28 to 65 ( p < 0.0005). Active external rotation improved from -7.4° to 22.9° ( p < 0.0005). There was a 22.4% overall complication rate, including dislocation (5.1%), infection (5.1%), and transient nerve palsy (3.4%).

CONCLUSION

Patients undergoing RSA with LD-TM transfer in the setting of loss of external rotation demonstrate reliable clinical improvements in shoulder function with complication rates which are comparable to RSA alone.

The Role of Tendon Transfers for Irreparable Rotator Cuff Tears

PURPOSE OF REVIEW

This review aims to describe the tendon transfer options for treating irreparable rotator cuff tears (RCTs). Options for transfer include latissimus dorsi and lower trapezius transfers for posterior-superior RCTs and pectoralis major and latissimus dorsi transfer for anterior-superior RCTs.

RECENT FINDINGS

While the latissimus dorsi tendon transfer has historically been performed for posterosuperior RCTs, the lower trapezius transfer is a more anatomic option and has demonstrated promising results in recent studies. Similarly, the pectoralis major transfer has historically been the tendon transfer of choice for anterosuperior RCTs. However, the latissimus dorsi tendon transfer has recently been shown to be a safe and anatomic tendon transfer for subscapularis insufficiency. The treatment of irreparable RCTs involves complex decision making. Tendon transfer procedures can restore the glenohumeral joint force couples, allowing restoration of near-normal shoulder kinematics. Benefits include reliable pain relief, increased function, and increased strength. Proper selection of donor tendon is crucial, and the principles of tendon transfer procedures must be adhered to for maximal benefit.