Factors affecting satisfaction in patients with a rotator cuff retear: CT arthrography-based study.

PURPOSE: The relationship between retear that may occur after rotator cuff repair and patient satisfaction is not well established. This study aimed to determine whether the types and size of the retear evaluated by computed tomography arthrography (CTA) influenced patient satisfaction. We also analyzed the patient factors that could affect patient satisfaction. PATIENTS AND METHODS: A total of 50 patients who were diagnosed with rotator cuff retear after undergoing arthroscopic rotator cuff repair were included in this study. All the patients were dichotomously classified into the satisfactory or dissatisfactory groups according to the patients' self-classifications. CTA was used to assess the attachment status of the footprint, detect retear on the medial side of the footprint of the repaired cuff, and determine the retear size. Demographic factors, including sex, age, occupation, dominant upper extremity, duration of pain, presence of diabetes mellitus, trauma history, history of ipsilateral shoulder surgery, repair technique, worker's compensation status, and functional shoulder score, were investigated. RESULTS: Thirty-nine patients were classified into the satisfactory group and 11 patients were classified into the dissatisfactory group. There were no differences in age, sex, occupation, dominant hand, duration of pain, presence of diabetes mellitus, trauma history, history of ipsilateral shoulder surgery, repair technique, worker's compensation, and duration of follow-up between the two groups. However, the postoperative American Shoulder and Elbow Surgeon (ASES) score (P < 0.01), visual analog scale (VAS) pain level (P < 0.01), anteroposterior (AP) length (P < 0.01), and area of the retear site (P < 0.01) were significantly different. CONCLUSION: The AP length and area of the retear site estimated using CTA were confirmed as the significant risk factors for dissatisfaction. However, the type of repaired rotator cuff judged by the attachment status of the footprint did not correlate with patient satisfaction. In addition, the postoperative VAS pain scale and ASES score was correlated with patient satisfaction.

Long-term clinical study and multiscale analysis of in vivo biodegradation mechanism of Mg alloy.

There has been a tremendous amount of research in the past decade to optimize the mechanical properties and degradation behavior of the biodegradable Mg alloy for orthopedic implant. Despite the feasibility of degrading implant, the lack of fundamental understanding about biocompatibility and underlying bone formation mechanism is currently limiting the use in clinical applications. Herein, we report the result of long-term clinical study and systematic investigation of bone formation mechanism of the biodegradable Mg-5wt%Ca-1wt%Zn alloy implant through simultaneous observation of changes in element composition and crystallinity within degrading interface at hierarchical levels. Controlled degradation of Mg-5wt%Ca-1wt%Zn alloy results in the formation of biomimicking calcification matrix at the degrading interface to initiate the bone formation process. This process facilitates early bone healing and allows the complete replacement of biodegradable Mg implant by the new bone within 1 y of implantation, as demonstrated in 53 cases of successful long-term clinical study.

Early range of motion exercise in pediatric patients with olecranon fractures treated with tension band suture with double loops and double knots.

BACKGROUND: Pediatric patients with olecranon fractures are uncommon. The tension band suture technique was introduced to reduce the burden of implant removal and other complications. However, to our knowledge, early range of motion (ROM) exercise has not been introduced in this population of patients. Double Vicryl loops and knots with 2 cross-pins are used to maintain the benefits of the tension band suture technique and to enhance fixation tensile strength. We believe that early ROM exercises could be achieved without nonunion or fixation failure. METHODS: Twelve pediatric patients with olecranon fractures were treated with tension band suture with double loops and knots between 2004 and 2015. Vicryl No. 1 was used for wiring. ROM exercises were initiated 1 week postoperatively with a customized functional brace. Early functional outcomes were evaluated by the Mayo Elbow Performance Score at every visit after 8 weeks postoperatively. RESULTS: Nine boys and 3 girls (average age, 10.6 years; range, 5 years 7 months-16 years 2 months) were included in the study. Initial displacement and angulation of the fractures were 5 mm (2-7 mm) and 12° (4°-25°), respectively. Two cases had radial neck fractures of the ipsilateral elbow. All patients had a perfect Mayo Elbow Performance Score after 8 weeks postoperatively. Pin removals were performed at 13.1 weeks. No complications, including growth arrest, were observed. DISCUSSION/CONCLUSION: Tension band suture with double loops and knots, combined with early ROM exercise, may be a complete alternative to tension band wiring.

Pit above the lesser tuberosity in axial view radiography.

PURPOSE: This study examined the relationship between the presence of a pit above the lesser tuberosity on axial view radiographs and rotator cuff tears and compared the demographic data between groups according to the presence of a pit above the lesser tuberosity. The hypothesis of this study was that the radiographic finding of a pit above the lesser tuberosity is related to rotator cuff tears. METHODS: For 112 patients with a symptomatic rotator cuff tear, plain radiographs of the symptomatic shoulder (tear side radiographs) and plain radiographs of the asymptomatic contralateral shoulder (no-tear side radiographs) were assessed. Seventeen radiological findings, including a pit above the lesser tuberosity, osteophytes, subchondral cysts, and sclerosis, were recorded by one blinded observer. Demographic data such as age, duration of symptoms, sex, arm dominance, smoking history, trauma history, American Shoulder and Elbow Surgeons score, Constant score, and involved tendon were collected. RESULTS: A pit above the lesser tuberosity was noted on tear side radiographs of 40 patients (35.7 %) and on the no-tear side radiographs of 27 patients (24.1 %), representing a significant difference (P = 0.040). A pit associated with a rotator cuff tear was observed more often in the dominant arm (P = 0.040) and more often in patients with less previous trauma (P = 0.024). CONCLUSIONS: A pit above the lesser tuberosity on axial view radiography was associated with a rotator cuff tear and occurred more often in the dominant arm of patients who had no trauma history. LEVEL OF EVIDENCE: Prognostic study, Level III.

Clinical and radiological results of early pin removal in pediatric radial neck fractures treated with stepwise percutaneous leverage technique.

OBJECTIVE: The aim of this study was to compare radiological and clinical results between early (≤3 weeks) and late (>3 weeks) removal of pins in patients treated with the stepwise percutaneous leverage technique for radial neck fractures. METHODS: 37 patients (aged 3-15) who underwent fixation with stepwise percutaneous leverage technique for Judet class III and class IV radial neck fractures between 2003 and 2019 were included in this retrospective study. Patients were divided into two groups according to the time of pin removal; 19 had early pin removal (≤3 weeks) and 18 had late pin removal (>3 weeks). The patients' radiological results were graded using the Metaizeau classification and their clinical results were evaluated by measuring their range of motion (ROM) and Mayo elbow performance scores (MEPS) at postoperative follow-ups. Statistical tests, including the Mann-Whitney U and Chi-square tests, were performed to compare the demographic factors and outcomes. RESULTS: The mean time of removal of pins for all patients was 21 (10-43) days. The mean time for early and late removal was 15.1 (10-21) and 27.6 (22-43) days, respectively. There was no statistically significant difference between groups radiologically according to the Metaizeau classification (P = .723). Furthermore, no statistically significant difference was found in the ROM (extension/flexion: P = .620, pronation/supination: P = .578) or MEPS (P = .695) between groups. CONCLUSION: This study has shown us that early removal of pins in patients with pediatric radial neck fractures treated with stepwise percutaneous leverage technique demonstrated good radiological and clinical results comparable to late pin removal. Level of Evidince: Level IV, Therapeutic Study.

Complications and outcomes of operative treatment for acute perilunate injuries: a systematic review.

We systematically reviewed the incidence of complications and outcomes of different surgical methods for acute perilunate injury in the MEDLINE, Scopus, Embase and Cochrane Library databases. Forty-three articles with 880 patients were included. The most common complications were arthritis (30%), carpal instability (15%), avascular necrosis of the lunate (12%), complex regional pain syndrome (11%), and nonunion or avascular necrosis of the scaphoid (9%). In the meta-analysis, the mean scapholunate gap was 1.7 mm in the closed surgery group and 2.3 mm in the open surgery group, which was a statistically significant difference. The mean flexion-extension arc of the wrist and modified Mayo wrist score were better in the closed surgery group than in the open surgery group. However, these findings may relate to different cohorts in terms of injury severity. Therefore, the causal relationship between closed surgery and better outcomes may be uncertain as less severe subluxations are more likely to be treated closed.

Accuracy of measuring tape and vertebral-level methods to determine shoulder internal rotation.

BACKGROUND: Goniometers can be used to assess shoulder ROM with reasonable accuracy, but not internal rotation. Vertebral level, as determined by the hand-behind-the-back method, is used frequently but its reproducibility is questionable. We therefore devised a new measuring tape-based method for determining vertebral level. QUESTIONS/PURPOSES: We (1) compared the accuracy of a measuring tape-based and conventional vertebral-level method; (2) determined whether BMI affects their accuracy; and (3) devised a formula for converting distances measured using a measuring tape to vertebral levels. PATIENTS AND METHODS: We assessed internal rotation in 61 patients with shoulder pain. An electrode was taped to the skin where the thumb reached maximally behind the back. The vertebral-level method involved determining the vertebral level of the electrode by palpating bony landmarks whereas the measuring tape method involved measuring the distance between the C7 spinous process and the electrode. True vertebral levels of the electrode were confirmed by radiography. RESULTS: In nonobese patients, the accuracies of the upper thoracic and lumbar-level measurements were better for the measuring tape method than the vertebral-level method (r = 0.861 and 0.700, respectively in upper thoracic; 0.913 and 0.710, respectively in lumbar). Patient BMI affected the accuracy of the vertebral-level method but not that of the measuring tape method. The distances obtained using the measuring tape method could be converted into vertebral-level units using the formula: estimated vertebral level = 0.031 × [distance between C7 spinous process and thumb behind back] - 0.044 × [patient height] + 7.277. CONCLUSIONS: The measuring tape-based method reflected shoulder internal rotation with higher accuracy than the vertebral-level method, and unlike the vertebral-level method, the measuring tape method was not affected by obesity. LEVEL OF EVIDENCE: Level II, diagnostic study. See Guidelines for Authors for a complete description of levels of evidence.

Subacromial impingement syndrome secondary to scapulothoracic dyskinesia.

The authors describe two cases of subacromial impingement syndrome of the shoulder secondary to scapular dyskinesia caused by a tumor in young adults. The two tumors, an osteochondroma and a ganglion, were located in the scapulothoracic joint and inhibited normal kinesis of the scapula during arm motion.

Radial head arthroplasty using a metatarsal osteochondral autograft.

PURPOSE: Treatment of comminuted fractures of the radial head is controversial, and considerable effort has been made to restore optimal function of the elbows, either by surgical reconstruction or prosthetic replacement. This report presents our experiences in treatment of unreconstructable radial head or neck fractures using osteochondral autografts harvested from the base of the second metatarsal bones. METHODS: Five patients with radial head and one with a radial neck fracture underwent treatment with osteochondral autografts. After excision of the unreconstructable radial head, the second metatarsal base was harvested and transplanted to the radius using the intramedullary nailing technique. RESULTS: The reconstructed elbows were examined clinically and radiographically for a mean period of 44.8 months (range, 24-72 months). At the last follow-up, in flexion-extension, the mean elbow mobility was 130°/10°. In supination-pronation, the mean elbow mobility was 73.3°/66.7°, with a mean loss of supination of 19.2° and loss of pronation of 12.5°. Grip strength was 91%, compared with the contralateral limb. The mean Mayo Elbow Performance Score was 94.2. The mean score of AOFAS rating system to the lesser toe was 93.7 points. CONCLUSION: Radial head arthroplasty with an osteochondral autograft from the second metatarsal base appears to be an effective alternative for treatment of unreconstructable radial head fractures. A larger group of patients and a longer follow-up period will be required in order to ease concerns regarding the donor site; however, none of the patients who underwent this procedure showed any complications during follow-up.

Do Cerclage Cables Delay the Time to Bone Union in Patients with an Unstable Humeral Shaft Fracture Treated with Intramedullary Nails?

PURPOSE: To evaluate the time to bone union after open reduction and internal fixation with cerclage cables followed by intramedullary nailing (IMN) for unstable humeral shaft fractures. MATERIALS AND METHODS: Patients with a humeral shaft fracture treated by IMN were enrolled. One group of patients was treated via open reduction and internal fixation with cables followed by IMN (cable group; n=32), while the other group was treated with a conventional closed IMN (non-cable group; n=64). The length of time to bone union and functional scores [Disabilities of the Arm, Shoulder and Hand (DASH) and University of California, Los Angeles (UCLA) scores] were measured for all patients. RESULTS: No significant differences were found in terms of age, gender, injury type, or smoking history between the two groups, except for the type of fracture. The cable group had significantly more complex types of fracture than the non-cable group (p<0.001). The mean time to bone union was 3.9 months in the cable group, while in the non-cable group, it was 4.4 months (p=0.041). The incidence of postoperative complications, such as non-union, delayed union, and radial nerve palsy, was similar between the two groups (p>0.05). No differences were identified in terms of DASH and UCLA scores (28.8 and 32.1 in the cable group and 26.4 and 32.6 in the non-cable group, respectively; p=0.335 and 0.264). CONCLUSION: In unstable humeral shaft fractures treated by IMN, open reduction and internal fixation with additional cerclage cables do not delay the length of time to bone union or increase the rate of other complications.

Stepwise Percutaneous Leverage Technique to Avoid Posterior Interosseous Nerve Injury in Pediatric Radial Neck Fracture.

OBJECTIVES: To introduce a stepwise percutaneous leverage technique to avoid posterior interosseous nerve (PIN) injury in pediatric patients with radial neck fractures and to evaluate the clinical outcome and the predisposing factors affecting the outcome. DESIGN: Retrospective case series study. SETTING: University level 1 trauma center. PATIENTS: Thirty-four children with a radial neck fracture, who were treated using a stepwise percutaneous leverage technique, were included in the study. INTERVENTION: The radial head fragment was reduced by pulling the first Steinmann pin proximally as a lever. Then, the kinked soft tissue was released by removal of the Steinmann pin with buttressing the radial head by the operator's thumb. The second Steinmann pin was inserted into relaxed soft tissue for fixation of the radial head. MAIN OUTCOME MEASUREMENTS: We used the Métaizeau classification as a radiologic result and Mayo Elbow Performance Score (MEPS) as a clinical outcome. Regression analysis was performed to identify the predisposing factors affecting the outcome. RESULTS: There was no occurrence of PIN palsy. According to the Métaizeau classification, 23 cases were classified as excellent, 9 as good, 1 as fair, and 1 as poor. The average MEPS was 97.6 points. Based on the regression analysis, only the postoperative Métaizeau classification was confirmed as a risk factor of a relatively poor outcome. CONCLUSIONS: The stepwise percutaneous leverage technique can be considered a good option in the treatment of pediatric radial neck fractures, because it ensures excellent results by avoiding injury to soft tissues including the PIN. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Isolated volar fracture-dislocation of the base of the second metacarpal bone by indirect injury.

Isolated volar fracture-dislocation of the second carpometacarpal joint is extremely rare, and no case of indirect injury has been reported. We are presenting a case of indirect injury, treated by open reduction with volar approach. Three-dimensional computed tomography was helpful for confirming and making surgical plan for this injury.

Tendon trap technique for rotator cuff repair.

Strangulation around cuff tissue is a possible cause of retear after rotator cuff repair. Therefore, tendon healing ideally requires changes in suture tension over the cuff tissue in accord with rotator cuff muscle activity. The authors present a type of fixation that mimics the mechanism of the Chinese finger trap. The devised knot-free tendon trap technique resembles the double-pulley-suture bridge technique, but all suture limbs share the tension evenly and respond synchronized to the cuff tendon. The technique provides simple biologic repairs of rotator cuff tears.

Intraneural ganglion in the digital nerve of the thumb: a case report.

Intraneural ganglion cysts of the peripheral nerve in the upper extremity are uncommon and usually originate within the epineurium of the peripheral nerve. The current report discusses a 57-year-old woman with a neuropathic nodular mass on the thenar area of the left hand. Magnetic resonance images showed a lobulated, homogeneous mass of high signal intensity on T2-weighted images and low signal intensity with peripheral enhancement on T1-weighted images. Excisional biopsy and histopathologic examination confirmed an intraneural ganglion cyst of the digital nerve of the thumb. A successful result was obtained by surgical treatment, and there was no recurrence of abnormal sensation and paraesthesia during the 3-year follow-up period.

Simultaneous reconstruction of quadriceps tendon rupture after TKA and neglected Achilles tendon rupture.

We report a case of simultaneous reconstruction of a quadriceps tendon rupture after total knee arthroplasty (TKA) and neglected Achilles tendon rupture, which occurred before TKA with an ipsilateral hamstring autograft. A 64-year-old woman presented with persistent right knee pain. She also had right heel pain and had received multiple steroid injections at the knee joint and heel. On examination, she showed osteoarthritis in the medial and lateral compartments of the knee joint and an Achilles tendon rupture in the ipsilateral limb. There was skin dimpling and the proximal portion of tendon was migrated. We performed TKA, and the postoperative course was satisfactory. She returned 3 months postoperatively, however, with skin dimpling around the suprapatellar area and weakness of knee extension. Her ankle symptoms were also aggravated because she could not use the knee joint freely. We performed simultaneous reconstruction of the quadriceps tendon and the Achilles tendon using an ipsilateral hamstring autograft.Hamstring autograft offers a good alternative treatment option for rupture repair, particularly with concommitant ruptures of multiple sites when primary repair is not possible or the viability of repaired tissue is poor.

Pseudoaneurysm after tibial nailing.

This is a case report of a patient with a pseudoaneurysm of the anterior tibial artery after lateral to medial distal locking of an intramedullary nail for a tibia shaft fracture.