The Use of a Distal Radius Allograft for Severe Glenoid Bone Loss in the Setting of Revision Shoulder Arthroplasty: A Case Report.

CASE: A 71-year-old female patient presented with severe glenoid bone loss and deformity after 2 subsequent failed arthroplasty procedures because of baseplate failures. The patients then underwent a conversion from reverse shoulder arthroplasty to hemiarthroplasty, while using a distal radius allograft to augment the deformed glenoid. At the 2-year follow-up, the patient reported minimal pain and satisfactory outcomes. CONCLUSION: This case presents the distal radius as a potentially useful allograft option for augmenting severe glenoid bone loss in the setting of revision shoulder arthroplasty.

Free fibula flap to achieve bone union after congenital pseudoarthrosis of the forearm in neurofibromatosis: Technical report based on 3 cases, and literature review.

Congenital pseudarthrosis of the forearm bones (CPFBs) is rare, with only 106 reported cases, and is frequently associated with neurofibromatosis (NF). Approximately 5% of patients with NF develop pseudarthrosis, and 50% of patients with pseudarthrosis have NF. Achieving bone union is difficult in congenital pseudarthrosis. Many methods have been attempted, including casting, internal fixation with or without grafting, and electrical stimulation, but failure is frequent. Free vascularized fibular flaps (FVFs) have been used to bridge long bone defects since 1975 and in tibial pseudarthrosis since 1979. In CPFB, FVF is more successful than other methods in achieving union and is the current treatment of choice. Here, we presented three cases of forearm pseudarthrosis treated with FVF, reviewed the literature on CPFB, and discussed some technical aspects of FVF treatment. Three cases of congenital pseudoarthrosis were treated with free fibula flaps, diagnosed at ages of 7 years (ulna), 15 months (radius), and 9 years (radius and ulna). Two flaps were stabilized with intramedullary wires and latterly, one with compression plates. One persistent nonunion received revision nonvascularized bone grafting and plating. All patients achieved union by 11 months after index surgery. Reconstruction with vascularized fibula is the treatment of choice because it offers the highest published union rates and good functional results. Complete resection of the affected bone and stable fixation, latterly with compression plates are critical to success. Surgery is technically demanding, and complications are common. Secondary surgery may be required, but outcomes are favorable. LEVEL OF EVIDENCE: IV.

Reconstruction of congenital pseudarthrosis of the radius with a vascularized tibial periosteal transplant: A case report.

Congenital pseudarthrosis of the forearm poses a considerable challenge because of its rarity. The objective of this report is to introduce a novel surgical technique for its treatment. Here, we document a case of congenital pseudarthrosis of the radius in a 3-year-old boy diagnosed with type-1 neurofibromatosis. The surgical treatment involved the excision of approximately 9 cm of native radial periosteum and a bifocal radius osteotomy, which was supplemented with a vascularized tibial periosteal transplant to facilitate bone healing. Anastomosis between the anterior tibial vessels and radial vessels was performed. No immediate or late postoperative complications were observed. After 3 weeks, a robust callus formation was observed, and during a follow-up examination 3 years and 4 months later, a wide range of active forearm rotation was noted. This report suggests that vascularized periosteal flaps show promise as a viable treatment option for congenital pseudarthrosis of the forearm. They offer an alternative to vascularized fibular grafts or single-bone forearm constructs.

360-degree Arthroscopic Management of Scaphoid Pseudarthrosis: Description of Technique and Indications.

Nonunion remains one of the main complications of scaphoid fractures, with no consensus being reached as to the best surgical technique for scaphoid pseudoarthrosis. Thus, different types of procedures for bone stability and biological stimulus for consolidation have been described. The use of arthroscopy for scaphoid pseudoarthrosis has advantages as it allows for treating associated injuries, preserving wrist proprioception by minimizing damage to the joint capsule and ligaments and not deteriorating the already fragile scaphoid vasculature, leading to a quick recovery. Arthroscopy was initially indicated for stable scaphoid pseudoarthroses, being used in all patterns of this condition, including unstable ones and those with flexion collapse. However, most scientific articles describe the use of arthroscopy only through the dorsal portals, creating technical difficulty in complete debridement of the site of pseudarthrosis and in placing bone graft. This study describes the 360-degree technique, which standardizes arthroscopy in scaphoid pseudoarthrosis treatment, allowing, with the use of dorsal, volar, and radial portals, direct approach to the entire circumference of the nonunion site, facilitating the debridement of the injury site, the correction of the scaphoid deformity, and the placement of a graft directly on the site of the defect, mainly in its volar region after correction of the flexion deformity. The 360-degree technique aims to help and standardize the arthroscopic procedure for scaphoid pseudarthrosis, creating a routine with defined surgery stages. Additional portals allow complete access to the entire nonunion site and better positioning of the bone graft under direct view.

[Bone Reconstruction in the Upper Extremity other than the Scaphoid with the free vascularized Medial Femoral Condyle]. / Knochenrekonstruktion an der oberen Extremität mittels eines freien vaskularisierten Knochentransplantates aus der medialen Femurkondyle ohne Berücksichtigung des Skaphoids.

PURPOSE: To evaluate whether a vascularized bone graft from the medial femur condyle (MFC) can successfully be used to reconstruct small bone defects (< 4 cm) on the upper extremity other than the scaphoid. PATIENTS AND METHODS: In 7 patients at the age of 28 to 66 years 8 vascularized bone grafts from the MFC were used to reconstruct bone defects on the upper extremity other than the scaphoid. Bone healing, complications, donor side morbidity, and patient´s satisfaction were evaluated. Follow-up was 3 to 40 months. Indications were: two nonunion of the distal radius in spite of several surgical procedures, one defect of the distal radius following a radius fracture with osteoarthritis of the radiocarpal joint, one acute trauma with partial loss of the carpus and radius due to an explosion injury, reconstruction of the first metacarpal (MC) following resection of a giant cell tumour, and three fusions between the 1st and 2nd MC as a salvage procedure after several surgical procedures at the saddle joint. RESULTS: There was a regular bony healing in 4 of the 8 cases; delayed bony healing was seen in three cases after 7, 8, and 9 months. In one case there was only a partial bony healing. Two donor side haematomas required surgical revision. Patient's satisfaction was high with 7 painless cases. CONCLUSION: Free vascularized bone grafts from the medial femur condyle can successfully be used to reconstruct bone defects up to 4 cm of the upper extremity other than the scaphoid.

Vascular Supply of the Wrist.

The vascular anatomy of the wrist is vital in the development of multiple disorders at the carpus. Understanding this vascular network may prevent iatrogenic injury to the blood supply and can be used by surgeons through vascularized bone grafts. Multiple surgical techniques take advantage of the vascular network. This article reviews the blood supply of the distal radius, ulna, and carpal bones and its clinical implications.

Treatment of proximal scaphoid waist nonunions with vascularized bone graft from the distal radius or medial femoral condyle.

Fractures of the proximal scaphoid waist are more prone to nonunion than distal scaphoid fractures. Thirty-nine patients (five females, 34 males; mean age 31 years) who had operation for proximal scaphoid waist nonunion between 2017 and 2020 were retrospectively analysed. Patients received a free vascularized medial femoral condyle graft (Group 1: 18 patients) or distal radial bone graft based on a 1,2 intercompartmental supraretinacular artery pedicle (Group 2: 21 patients). In Group 1, union was achieved in 17 of 18 cases, with mean time to union of 13 weeks and mean operation time was 221 minutes. In Group 2, union was achieved in 19 of 21 cases, with mean time to union of 15 weeks and mean operation time was 100 minutes. The radiological and functional results of both groups were similar. We recommend a distal radial bone graft based on the 1,2 intercompartmental supraretinacular artery pedicle for proximal scaphoid waist nonunions since the operation is shorter, technically more manageable and requires less microsurgical experience.Level of evidence: III.

Finger Rescue Using the Induced Membrane Technique for Osteomyelitis of the Hand.

Background: The induced membrane technique is now commonly used for large diaphyseal bone defects. Recently, several papers reported using the induced membrane technique for hand surgery. We applied this technique with some modifications to treat osteomyelitis of the phalanges. Methods: This study included six men and one woman with a mean age of 56 years. The causes of osteomyelitis included animal bite (n = 3), trauma (n = 3), and an indwelling needle (n = 1). Two-staged surgeries were performed, including an initial stage with radical debridement of the infected tissue and placement of a cement spacer into the bone defect. Four weeks after the first stage, a bone graft was performed. A bone block with cortex was harvested from the iliac crest or radius, and costal cartilage was used for proximal interphalangeal (PIP) joint arthroplasty in two cases. Grafted bones were fixed with a mini screw or an external fixator. Results: In all cases, the infection subsided, and bone union was obtained within two to three months. No absorption of the grafted bone was observed. In the two cases with PIP joint defect, joint motion without pain was preserved at 56° and 26°. Conclusions: A short interval between the two surgical stages of the induced membrane technique could be advantageous for patients in terms of time and financial burden and early rehabilitation of movement. Cortico-cancellous bone grafts were able to maintain bone length and stability with screw fixation. In the cases with PIP joint defects, instead of arthrodesis, we performed PIP arthroplasty using costal cartilage, eventually obtained some motion without pain. The induced membrane technique was useful and technically feasible for treating osteomyelitis in the hand, and secondary joint reconstruction was possible to obtain some motion.

Osteoarticular allograft reconstruction after distal radius tumor resection: Reoperation and patient reported outcomes.

BACKGROUND: The aims of this study are to evaluate the rate of wrist joint preservation, allograft retention, factors associated with reoperation and to report the patient reported outcomes after osteoarticular allograft reconstruction of the distal radius. METHODS: Retrospective chart review identified 33 patients who underwent distal radius resection followed by osteoarticular allograft reconstruction, including 27 giant cell tumors and 6 primary malignancies. Ten patients with a preserved wrist joint completed the QuickDASH, PROMIS-CA physical function, and Toronto extremity salvage score (TESS) at a median of 13 years postoperatively. RESULTS: The allograft retention rate was 89%, and an allograft fracture predisposed to conversion to wrist arthrodesis. The reoperation rate was 55% and 36% underwent wrist arthrodesis at a median of 4.2 years following index surgery. The use of locking plate fixation was associated with lower reoperation and allograft fracture rates. Patients reported a median QuickDASH of 10.2 (range: 0-52.3), a mean PROMIS physical function of 57.8 (range: 38.9-64.5) and the median TESS was 95.5 (range: 67.0-98.4). CONCLUSION: Osteoarticular allograft reconstruction results in acceptable long-term patient reported outcomes, despite a high revision rate. Allograft fixation with locking plates seems to reduce the number of reoperations and allograft fractures, along with reduction in wrist arthrodesis rates.

Complex open elbow fracture Gustilo-Anderson type IIIB treated with the primary elbow arthroplasty: A case report.

Total elbow arthroplasty as a treatment option for open elbow fracture is relatively rare described. We reported a 39 years old polytrauma patient with complex open elbow fracture (Gustilo-Anderson type IIIB). The patient presented with large soft tissues defect on dorsal part of the left elbow, ulnar palsy due to the irreparable loss of the ulnar nerve, distal triceps loss due to the complete loss of the olecranon, loss of both humeral condyles with collateral ligaments and complex elbow instability. Only few similar cases have been published. Reconstructive surgery included repetitive radical debridement, irrigation, vacuum assisted closure system therapy, external fixation, coverage of the soft tissue defect with fascia-cutaneous flap from the forearm. Four months after the injury, total elbow arthroplasty with autologous bone graft (from the proximal radius) inserted in the ulnar component, was performed. At 3 years postoperatively, the patient is able to perform an active flexion from 0° to 110° with full prono-supination. Only passive extension is allowed. The ulnar neuropathy is persistent. Patient has no signs of infection or loosening of the prosthesis.

Nontraumatic Perforation of the Metacarpal by the Stem of a Flexible Silicone Implant in a Patient with Rheumatoid Arthritis.

A 49-year-old woman with rheumatoid arthritis who underwent replacement arthroplasty of second to fifth left metacarpophalangeal joints with silastic implant seven years ago presented with a complaint of mild pain and discomfort on the replaced joint of index finger. Ulnar deviation had relapsed, with severe swan neck deformities. Computed tomography examination demonstrated that the tip of the stem of the silicon implant penetrated the second metacarpal. We confirmed that finding surgically, and we performed a revision surgery successfully with autogenous bone grafting from distal radius. As the patient had undergone finger joint replacement surgery with silastic implant, nontraumatic perforation of the bone cortex by the implant could happen in a long-term process. On long-term follow up of silastic arthroplasty of finger joint, the possibility of nontraumatic perforation of the finger bone by the prosthesis should be considered, especially in the coexistence of severe finger deformities such as swan neck deformity.

The Use of Nitinol Compression Staple Fixation and Bone Graft for Scaphoid Waist Fractures and Nonunion: A Surgical Technique.

In the management of scaphoid fractures, nonunion is an important complication that can lead to carpal instability and early-onset arthritis. Various techniques have been described to treat scaphoid nonunions, yet a clear consensus on the superiority of one method is not yet established. The use of compression staple fixation has been described in the literature and may be a viable alternative to other fixation techniques. Volar Nitinol staple fixation avoids damage to the trapezium during retrograde fixation with a screw. It also avoids damage to the proximal dorsal cartilage, which occurs during anterograde screw fixation. Because of its shape and position on the volar aspect of the scaphoid, staple fixation provides compression, prevents graft extrusion, and avoids taking up space in the medullary canal of the scaphoid. Moreover, it may be technically easier than screw fixation. Despite these advantages, this technique has not been widely adopted. We describe the technique for utilizing Nitinol compression staples and bone grafting in the treatment of scaphoid nonunion.

Comparative outcome analysis of internal screw fixation and Kirschner wire fixation in the treatment of scaphoid nonunion.

In cases with difficult scaphoid screw placement due to small, fragile bone fragments, or transplants and insufficient space, the internal Kirschner wire fixation is a fallback option; however, controversy remains regarding its stability, safety, and outcome. Between 2001 and 2011, 95 patients were treated in our center (n = 80 with cannulated compression screws and n = 15 with Kirschner wires), and retrospectively analyzed. The outcome measurements included the analysis of patient data, union rate and analysis of functional measures, and quality of life. Bony reconstructions were performed with Vascularized Bone Grafts (VBG) based on the 1,2-Intercompartmental Supraretinacular Artery (ICSRA) , Medial Femoral Condyle (MFC)-VBG, cancellous bone, and iliac crest grafts. Bony healing and functional outcome showed no significant differences between Kirschner wire fixation and cannulated compression screws, although significantly more 1,2-ICSRA-VBG were treated with Kirschner wires. Although predominantly used as an intraoperative fallback option, our data demonstrate that Kirschner wire internal fixation can be safe and reliable, with comparable bony union rates and excellent functional outcomes.

Clinical and radiological outcomes of 40 cases of SLAC and SNAC wrist treated by four-corner arthrodesis with locking plate.

The treatment of scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC) wrist varies. No clear consensus exists on surgical indications. Scaphoid excision and four-corner arthrodesis with locking plate is one of preferred treatments for these lesions. The purpose of this study was to assess the clinical and radiological outcomes of locking plates for treating SNAC and SLAC wrist after a mean follow-up of 5 years and to compare these outcomes with the results reported in the literature. A retrospective study was conducted in two hospitals, involving 40 patients who underwent scaphoid excision and four-corner arthrodesis with locking plate between January 2006 and September 2016. All patients were reviewed as outpatients with clinical and radiographic measurements. At the last follow-up, the mean pain level on visual analog scale (VAS) was 2.5/10 [0-7] (SD: 1.7). Patients had a mean flexion of 46% and a mean extension of 46% compared to the contralateral side. An 18% gain was observed in grip strength. The mean postoperative QuickDASH score was 30 [0-57] (SD: 15.3). Seventy percent of patients were satisfied with the operation. Complete (all four joint interfaces) joint space fusion was achieved in 55% of patients. Only one patient (2.5%) had no joint fusion. The joint between the lunate and the capitate was fused in 38 patients (95%). Nine patients suffered complications; eight of them required surgical revision (20%). Four-corner arthrodesis with locking plate is a valuable surgical technique for treating SLAC and SNAC wrist because it preserve satisfactory range of motion and grip strength (64% compared to the non-operated side), maintains the height of the carpus and prevents the premature appearance of radiocarpal osteoarthritis, as long as the technical challenges of this procedure are mastered.

Reconstruction of the Weightbearing Area of the Foot with Vascularized Chimeric Osteocutaneous Fibular Flap: A Case Report.

Damage to the weightbearing surface of the foot is a challenge for the reconstructive surgeon. The aim is to reconstruct the skeletal tripod and soft tissue, allowing the patient to walk normally. We report the case of a patient admitted with an acute right foot open fracture of the second, third, fourth, and fifth metatarsal bones. After debridement of all nonvital tissues, the patient required reconstruction of the metatarsal heads (third, fourth, and fifth) plus soft tissue coverage. We then performed a reconstruction with a free osteocutaneous fibular flap, insetting the bone perpendicular to the long axis of the metatarsal bones. This configuration allowed the reconstruction of the foot skeletal tripod. A second free flap, a thin radial forearm flap, was added during the revision surgery to improve the venous drainage of the skin paddle of the fibular flap and avoid tension after skin closure. At 1-year follow-up, the patient was able to walk entirely weightbearing on the forefoot, returning to her previous employment with no limitation in physical and recreational activities. To our knowledge, this is the first description of the use of a chimeric osteocutaneous fibular flap, oriented transversely, to reconstruct a complex bone/soft tissue defect after a traumatic loss of multiple metatarsal heads.

Is Joint Levelling Procedure Better than Temporary Scaphocapitate Pinning in Patients Undergoing Vascularized Bone Graft for Kienböck Disease?

Background: Although there have been many studies of the vascularized bone graft (VBG) or unloading procedures alone for the treatment of Kienböck disease, little information has been reported about patients treated with VBG combined with unloading procedures. The purpose of this study is to 1) describe the outcomes in patients treated with VBG combined with unloading procedures, 2) compare the outcomes according to the unloading procedures and 3) find any radiologic parameters affecting revascularization in Kienböck disease. Methods: A retrospective review was performed involving in 20 patients undergoing 4th and 5th extensor compartmental VBG with unloading procedures for Kienböck disease from 2010-2015. After VBG in all patients, unloading procedures were additionally performed depending on the ulnar variance. These additional operations included joint leveling procedures (radial and capitate shortening osteotomy) or temporary scaphocapitate pinning. Radiologic outcome was evaluated according to Lichtman stage and presence of revascularization evidence. Clinical evaluations included wrist range of motion, grip strength, visual analogue scale (VAS), and Mayo wrist score. Results: VBG with joint leveling procedures was performed in 11 patients (5 radial shortening and 6 capitate shortening) and VBG with temporary scaphocapitate pinning was performed in 9 patients. Although clinical outcomes were not significantly different according to the unloading procedures, there were significantly more patients with evidence of healing of osteonecrosis on radiographs in joint leveling procedure group than temporary scaphocapitate pinning group. Overall, evidence of healing of osteonecrosis was found on plain radiographs in 11 patients and was not found in 9 patients. However, there were no significant preoperative radiological parameters affecting revascularization on radiographs. Conclusions: Not all patients had evidence of revascularization on radiography after VBG combined with unloading procedures for Kienböck disease. However, among the unloading procedures, joint-leveling procedures positively influenced the revascularization process.

Scaphoid nonunions in adolescents: Treatment with vascularized bone grafts.

INTRODUCTION: Scaphoid nonunions (SN) are rare in adolescents. The use of vascularized bone grafts (VBG) from the distal radius as an alternative to conventional grafting for the treatment of established SN in adolescents is described. PATIENTS AND METHODS: The technique was applied in 13 patients with symptomatic SN resulting from fractures. All patients were male with average age of 16.5 years (15-17.5). The average period from injury to surgery was 8.3 months (4-13). Patients underwent vascularized bone grafting and internal fixation with K-wires. In 6 patients with proximal pole nonunion a VBG from the dorsal distal radius was used, and in 7 with a waist nonunion a VBG from the palmar distal radius was used. The valuation was clinical (grip strength, range of motion, VAS pain score, DASH) and radiographic. The time to return to activity was also recorded. RESULTS: The mean follow-up was 9.8 years (range, 4-16). The union rate was 100% (11/11 cases). Union was achieved in a mean period of 7.2 weeks (range, 6-10), without growth disturbance or other complications from the epiphyseal plate of the distal radius. The range of motion and grip strength was 89% and 92% of the contralateral respectively. The mean postoperative DASH score was 8 and the VAS score was 1. All patients returned to daily activities and sports in a mean period of 4.5 months. CONCLUSIONS: The use of VBG from the distal radius provided a permanent solution in the rare case of SN in adolescents, without donor site morbidity or epiphyseal plate disturbance. The deformity and carpal height were corrected resulting in painless motion and grip strength.

Combined Pedicled Vascularized and Wedge Nonvascularized Bone Graft for Treating Scaphoid Waist Nonunion With Humpback Deformity.

Pedicled vascularized bone graft (VBG) is a useful method in treating the scaphoid fracture nonunion, especially when the avascular necrosis exists. Humpback deformity is an important issue that we have to correct it during the treatment. We describe a method by using combined wedge non-VBG to correct the nonunion deformity when treating scaphoid nonunion with pedicled VBG. The wedge bone graft was harvested just proximal to the 2,3 intercompartmental supraretinacular artery VBG and was used as an inlay at the volar site to correct the humpback deformity, whereas the VBG was set at the dorsal site for bone bridging and blood supply. We also present our results of 10 patients with scaphoid fracture nonunion and humpback deformity treated with this method. Bone healing was achieved and the lateral intrascaphoid angles could be improved in all the 10 patients. Functional outcomes, including the Visual Analog Pain Scale for pain during activity, grip strength, the shortened Disabilities of the Arm, Shoulder, and Hand questionnaire (QuickDASH), and the modified Mayo Wrist Scores, were significantly improved.

Vascularized pedicled graft from distal radius for scaphoid nonunion with double stabilization: A long term follow up study.

PURPOSE: The aim of the present study is to present the long-term efficacy of the graft of the distal radius based on the 1,2 intercompartmental supraretinacular artery (1,2 ICSRA) for the treatment of scaphoid nonunion with a proposed treatment of double stabilization with Kirschner wires and external fixator. METHODS: Between 2007 and 2013 we retrospectively reviewed 11 patients who were operated for established scaphoid nonunion with pedicled vascularized distal radius graft based on the 1,2 ICSRA in our department. Stabilization of the graft was achieved with Kirschner wires and the wrist was immobilized with a transarticular external fixator. All patients were evaluated pre- and post-operatively both clinically and radiologically. The DASH score was also completed by the patients before and after the operation. The minimum follow-up of the patients was 5 years. RESULTS: The mean age of the patients was 28.64 years (range, 18-49 years). Ten patients were males (90.91%) and one female (9.09%). In all patients, union was achieved. The mean time of union was 11.2 weeks (range, 8-18 weeks). The mean follow-up was 61.32 months (range, 60-72 months). Compared to the contralateral hand there was noticed 14° lack in flexion and 18° in extension. The mean DASH score showed also significant improvement from 23.1 (range, 9.4-50.6) preoperatively to 4.72 (range, 0-22.8) during the last follow-up. CONCLUSION: The 1,2 ICSRA distal radius graft consists a trustworthy pedicled vascularized graft for the treatment of nonunion presenting very promising long-term outcomes.

Arthroscopic treatment of scaphoid nonunion with humpback deformity and DISI with corticocancellous bone grafting: Technical note.

For two decades, scaphoid nonunion has been treated arthroscopically. However, compressed cancellous bone graft does not have the same mechanical properties as corticocancellous bone graft for reducing the scaphoid humpback deformity and DISI tilt. Here, we describe an arthroscopic technique to treat Alnot stage IIB scaphoid nonunion. We treated a 27-year-old male patient for scaphoid waist nonunion with humpback deformity and DISI. A 8×8×10 mm cylindrical corticocancellous bone graft was harvested from the dorsal aspect of the radius using a single-use osteochondral autograft transfer system (OATS®, Arthrex Inc., Naples, USA). It was inserted in the nonunion site through an arthroscopic volar approach. Bone union was obtained at 3 months with lasting correction of the scaphoid humpback deformity and DISI. The functional result at 6 months was excellent. There were no complications. Scaphoid nonunion with humpback deformity and DISI may be treated arthroscopically with a corticocancellous bone graft.