Biological Versus Nonbiological Reconstruction of the Ulnar Collateral Ligament of the Thumb Metacarpophalangeal Joint: A Retrospective Study.

PURPOSE: The purpose of this study was to compare clinical and radiologic outcomes of biological ligament reconstruction (BLR) versus nonbiological ligament reconstruction (NBLR) for chronic injuries involving the ulnar collateral ligament of the thumb's metacarpophalangeal joint. METHODS: Forty-two patients who underwent static BLR (n = 24) or NBLR (n = 18) were included in this retrospective analysis. Preoperative, postoperative, and contralateral thumb measurements (clinical evaluation, radiographs, and subjective outcome questionnaires) were compared over a mean of 38 months of follow-up. RESULTS: Average postoperative thumb metacarpophalangeal and interphalangeal joint ranges of motion were 2° to 54° and 0 to 71°, respectively, for BLR and 0° to 58° and 0° to 71°, respectively, for NBLR. Average grip and pinch strengths, relative to the unaffected hand, were 102% and 84% versus 103% and 89%, respectively. All patients demonstrated stability with a firm end point, compared with the unaffected thumb. The average Quick Disabilities of the Arm, Shoulder, and Hand score among all patients was 12 for the disability/symptom module, 0 for the sports module, and 17 for the work module. Stiffness was reported among four patients, and no patient sustained wound-related issues or other complications. CONCLUSIONS: Nonbiological ligament reconstruction of the thumb ulnar collateral ligament generates short-term outcomes comparable with those of BLR, potentially allowing for expedited recovery and rehabilitation. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Pedicled palmar intermetacarpal perforator flap for skin-graftless syndactyly release: Anatomical study and clinical application.

INTRODUCTION: Dorsal hand skin flaps have been described in order to avoid digit skin grafting in syndactyly release. Although these skin-graftless techniques present a lower rate of long term complications, they result in unsightly dorsal scarring and worse patient satisfaction. We describe a novel technique using an intermetacarpal palmar flap by performing an anatomic study and clinical application. MATERIALS AND METHODS: Ten colored-latex-injected fresh upper limbs were used to study the palmar cutaneous perforators to second to fourth intermetacarpal space skin flaps designed elliptical, its width extending from the center of each involved ray and measuring 40%-50% the length of the palm. RESULTS: The anatomical study revealed a mean 2.77 (range 1 to 4) cutaneous perforators originating from either the common or proper digital vessels for every intermetacarpal space and measuring 0.4 mm (range 0.3 to 0.5 mm) in diameter. CLINICAL APPLICATION: This flap, measuring a mean of 21.5 mm (range 20 to 23 mm) in length and 9.5 mm (range 9 to 10 mm) in width, was used to release simple syndactylies in three patients of mean age 24 months (range = 18-30 months). After skin incision, cutaneous septa to the digital canal were released to permit flap advancement to the web space. Cutaneous perforators were not dissected. Intra-operative palmar-flap advancement provided commissure coverage in all children with no skin grafts needed. Over a mean follow-up of 15 months, no complications occurred, mean palm scar VSS was 2.4 (range 2 to 3) while it was 3 (range 3 to 3) for the commissure scars. CONCLUSIONS: Skin-graftless syndactyly release using a palmar intermetacarpal flap seems both reliable and easy-to-perform. LEVEL OF EVIDENCE: Therapeutic IV.

Vascularized Ulnar Periosteal Pedicled Flap for Upper Extremity Reconstruction in Adults: A Prospective Case Series of 11 Patients.

PURPOSE: We hypothesized that a vascularized ulnar periosteal pedicled flap (VUPPF) is a versatile graft applicable in adult patients that yields good outcomes and is a reliable alternative to other vascularized bone grafts to reduce both the technical demands and donor site morbidity of other options. METHODS: We reviewed 11 adult patients who underwent surgical treatment of forearm atrophic nonunion with a VUPPF. Patients' demographics, outcomes (measured by pain on the visual analog scale; Quick Disabilities of the Arm, Shoulder, and Hand score; range of motion; and grip strength), and associated complications were reported. RESULTS: Of the 11 patients, 5 had previous surgery in an attempt to treat the nonunion with an autologous cancellous bone graft from the iliac crest or olecranon. The average time from nonunion until the VUPPF was 9 months (SD, ±3 months; range, 6-14 months). The mean visual analog scale score improved considerably after surgery (8.7 vs 0.6), and considerable improvement was also noted in the Quick Disabilities of the Arm, Shoulder, and Hand score (50 vs 6). A notable improvement was seen in grip strength after surgery. Pronation/supination also improved considerably between the preoperative assessment and the final postoperative follow-up. CONCLUSIONS: A vascularized ulnar periosteal pedicled flap seems to be a useful and versatile option for a variety of bone union failures of the upper extremity in adults, either at initial presentation or as a salvage technique. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

The One-Bone Forearm in Children: Surgical Technique and a Retrospective Review of Outcomes.

PURPOSE: The purpose of this study was to describe a technique of end-to-end rigid fixation of the distal radius to the proximal ulna. The shortening and radioulnar overlap in this technique yield a high union rate, large corrections, and few complications. METHODS: This retrospective chart review from 2 centers was undertaken in 39 patients (40 forearms) who underwent one-bone forearm operations between 2005 and 2019. There were 25 male and 14 female patients, with a mean age at surgery of 9.7 years (range 3 to 19 years; SD, 4.5 years). The diagnoses included brachial plexus birth injury, spinal cord injury, arthrogryposis multiplex congenita, cerebral palsy, ulnar deficiency with focal indentation, multiple hereditary exostosis, acute flaccid myelitis, and tumor. RESULTS: The average follow-up was 33.5 months (1.2-110.1 months; SD, 27.1 months). The 36 forearms in supination had an average supination contracture of 93° (range, 15° to 120°; SD, 15.4°). The 4 pronated arms had an average pronation contracture of 80° (range, 50° to 120°; SD, 29.2°). The average postoperative position was 22.8° of pronation (range, -15° to 45°; SD, 12.9°). The average correction obtained with our technique was 113° (range, 20° to 145°; SD, 22.9°). Radiographic union was demonstrated in 32 (80%) of the one-bone forearms by 10 weeks, 39 (97.5%) by 16 weeks, and 40 (100%) by 24 weeks. One patient had peri-implant fractures prior to union. No forearms required reoperation for nonunion. CONCLUSIONS: One-bone forearm performed with this technique allows reliable healing and a large degree of correction. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Triceps to teres minor motor nerve transfer to restore glenohumeral external rotation after neonatal brachial plexus injury.

INTRODUCTION: Attaining active glenohumeral external rotation (aGHER), whether via primary reconstruction or spontaneous recovery, is infrequent in patients with neonatal brachial plexus palsy (NBPI). We evaluated the effectiveness of triceps-to-teres minor motor branch transfers to restore this function, both performed primarily (i.e., in conjunction with microsurgical plexus reconstruction) or secondarily (after primary surgery has failed to restore aGHER). PATIENTS AND METHODS: This was a retrospective study of 12 children with NBPI undergoing triceps-to-teres minor motor branch transfer via an axillary approach, six undergoing primary surgery and six secondary. The primary outcome was post-operative restoration of aGHER in abduction. The primary-surgery group consisted of six children of mean age 8 months (range 5-11) with partial injuries ranging from C5-C6 to C5-C8. The secondary-surgery group included six patients with C5-C6 injuries of mean age 43 months (range 23-120), undergoing re-operation a mean 40 months (range 18-116) after their primary surgery. RESULTS: No complications occurred after surgery. At a mean follow-up of 22 months (range 14-30), aGHER in abduction only was restored in one patient in the primary group while in the secondary group, aGHER in abduction was restored in all patients to a mean 73° (range 70-80) after a mean follow-up of 16 months (range 6-26). CONCLUSIONS: Triceps-to-teres minor motor branch transfer is not indicated as primary surgery for NBPI. However, they can be effective in children in whom primary surgery has failed to restore aGHER, even if the spinal accessory nerve is unavailable for transfer to the infraspinatus motor branch.

Congenital pseudarthrosis of the tibia: Rate of and time to bone union following contralateral vascularized periosteal tibial graft transplantation.

INTRODUCTION: Congenital pseudarthrosis of the tibia (CPT) is one of the most challenging orthopedic disorders. The use of a vascularized tibial periosteal grafts has been recently reported as a powerful tool to obtain bone union. We report its use in CPT. PATIENTS AND METHODS: Retrospective short-term study of 29 children (18 male/11 female, 15 right-sided/14 left-sided) of mean age 45 months (range 11-144 months), operated upon after October 2014. Nonunion site was debrided, and the periosteum of the involved limb was excised. A vascularized tibial periosteal graft (mean length 10.7 cm (range 9-15 cm) with a monitoring skin island (mean length 4.1 cm (range 3-5 cm) and based on the anterior tibial vessels, was obtained from the contralateral tibia. Anterior tibial vessels were always the recipient vessels. Most cases were stabilized with an LCP plate. The rate of and time to bone union were analyzed. Charts only were evaluated through the first 3 months after bone union was achieved. RESULTS: The flap survived and bone union was obtained in all cases, through a periosteal callus, in a mean time of 5.1 weeks (range 3-6 weeks). Mean follow-up was 8.3 months (range 7-19 months). No union failures occurred 3 months after resuming unprotected weight bearing. CONCLUSIONS: Our novel technique produced a consistent, rapid capacity for CPT union, superior to previously-reported techniques. However, it cannot be recommended as a standard method of treatment until consistent, long-term, refracture-free follow-up is documented.

Basal joint arthroplasty and carpal tunnel release comparing a single versus double incision: a prospective randomized study.

PURPOSE: Basal thumb joint osteoarthritis frequently coexists with carpal tunnel syndrome. The two conditions have traditionally been treated surgically through separate incisions. We sought to determine whether carpal tunnel release using a single incision during basal joint arthroplasty is as effective as a two-incision approach in patients with concomitant carpal tunnel syndrome and basal thumb joint osteoarthritis. METHODS: For this purpose, 40 patients were randomly allocated to either a single-incision or double-incision approach, all of whom completed the full follow-up period. The Boston Carpal Tunnel Questionnaire, QuickDASH, and a 10-point visual analog scale pain-severity rating were obtained from patients 3, 6 and 12 months post-operatively. RESULTS: The two treatment groups experienced comparable, progressive improvement in all symptom-, function-, and pain-related outcomes, with mean surgery time significantly shorter with the single-incision approach, and four versus zero patients in the double-incision group developing pillar pain (p = 0.035). CONCLUSIONS: Concomitant basal thumb joint osteoarthritis and carpal tunnel syndrome might be effectively performed through a single-incision approach, potentially avoiding any morbidity classically associated with a second incision. LEVEL OF EVIDENCE: Level II/Therapeutic Study. TRIAL REGISTRATION: ClinicalTrials.gov: NCT04391751, 04/29/2020, retrospectively registered.

Free vascularized iliac periosteal graft for bilateral forearm nonunion reconstruction in a child with bilateral transfemoral amputation.

Vascularized periosteal flaps have been reported as very effective for treating biologically complex bone nonunion in pediatric patients, owing to their high angiogenic and osteogenic potentials. The purpose of this article is to report a case of a 6-year-old patient with nonunion involving both forearms and a very limited bone flap donor site in the context of prior bilateral transfemoral amputation due to meningococcal sepsis. Two free vascularized iliac periosteal flaps (VIPF), supplied by the deep circumflex iliac vessels, were used in two stages to reconstruct the forearms. In the first stage, the left forearm, which had a diaphyseal bone defect of 5 cm diameter in the ulna and 4 cm in the radius, was combined with an iliac-crest bone allograft, fixed with two longitudinal 1.8 mm Kirschner wires and surrounded with a free VIPF of 24 cm2 . Consolidation was achieved 3 months after left forearm surgery, while complete allograft revascularization and remodeling was observed at 12 months. In the second stage, the right forearm, which had a diaphyseal bone defect of 3 cm diameter in the ulna and 1 cm in the radius, was fixed the radius with a 2.7 mm plate and surrounded with a free VIPF of 24 cm2 . The radius nonunion healed 6 weeks after surgery. There were no postoperative complications. Two years postoperatively, the patient had again resumed his arm gait painlessly and without a splint. VIPF may be considered a valuable and reliable surgical option for nonunion reconstruction in complex clinical scenarios in children.

Effect of vascularized periosteum on revitalization of massive bone isografts: An experimental study in a rabbit model.

INTRODUCTION: In the last years, limb salvage has become the gold standard treatment over amputation. Today, 90% of extremity osteogenic sarcomas can be treated with limb salvage surgery. However, these reconstructions are not exempt from complications. Massive allografts have been associated to high risk of nonunion (12-57%), fracture (7-30%) and infection (5-21%). Association of vascularized periosteum flap to a massive bone allograft (MBA) has shown to halve the average time of allograft union in clinical series, even compared to vascularized fibular flap. Creeping substitution process has been reported in massive allograft when periosteum flap was associated. However, we have little data about whether it results into allograft revitalization. We hypothesize that the association of a periosteum flap to a bone isograft promotes isograft revitalization, defined as the colonization of the devitalized bone by new-form vessels and viable osteocytes, turning it vital. MATERIALS AND METHODS: Forty-four New Zealand white male rabbits underwent a 10 mm segmental radial bone defect. In 24 rabbits the bone excision included the periosteum (controls); in 20 rabbits (periosteum group) bone excision was performed carefully detaching periosteum in order to preserve it. Cryopreserved bone isograft from another rabbit was trimmed and placed to the defect gap and was fixed with a retrograde intramedullar 0.6 mm Kirschner wire. Rabbits were randomized and distributed in 3 subgroups depending on the follow-up (control group: 5 rabbits in 5-week follow up group, 8 rabbits in 10-week follow-up group, 7 rabbits in 20-week follow-up group; periosteum group: 5 rabbits in 5-week follow up group, 7 rabbits in 10-week follow-up group, 7 rabbits in 20-week follow-up group). Fluoroscopic images of rabbit forelimb were taken after sacrifice to address union. Each specimen was blindly evaluated in optical microscope (magnification, ×4) after hematoxylin and eosin staining to qualitative record: presence of new vessels and osteocytes in bone graft lacunae (yes/no) to address revitalization, presence of callus (yes/no) and woven bone and cartilage tissue area (mm2 ) to address remodeling (osteoclast resorption of old bone and substitution by osteoblastic new bone formation). RESULTS: No isograft revitalization occurred in any group, but it was observed bone graft resorption and substitution by new-formed bone in periosteum group. This phenomenon was accelerated in 5-week periosteum group (control group: 49.5 ± 9.6 mm2 vs. periosteum group: 34.9 ± 10.4 mm2 ; p = .07). Remodeled lamellar bone was observed in both 20-week groups (control group: 6.1 ± 6.3 mm2 vs. periosteum group: 5.8 ± 3.0 mm2 , p = .67). Periosteum group showed complete integration and graft substitution, whereas devitalized osteons were still observed in 20-week controls. All periosteum group samples showed radiographic union through a bone callus, whereas controls showed nonunion in eight specimens (Union rate: control group 60% vs. periosteum group 100%, p = .003). CONCLUSIONS: Association of vascularized periosteum to a massive bone isograft has shown to accelerate bone graft substitution into a newly formed bone, thus, no bone graft revitalization occurs.

Are Vascularized Periosteal Flaps Useful for the Treatment of Difficult Scaphoid Nonunion in Adults? A Prospective Cohort Study of 32 Patients.

PURPOSE: To evaluate clinical and radiological outcomes after surgical treatment of difficult scaphoid nonunion in adults with a vascularized thumb metacarpal periosteal pedicled flap (VTMPF). MATERIALS AND METHODS: Thirty-two patients at least 18 years old, with scaphoid nonunion and characteristics associated with a poor prognosis, who underwent a VTMPF procedure, were included in this retrospective cohort study with a mean follow-up of 17 months. Factors associated with a poor prognosis were a delay in presentation of over 5 years, the presence of avascular necrosis, and previous nonunion surgery. All patients had at least 1 poor prognostic factor and 25% had 2 or more. RESULTS: In 30 men and 2 women, the mean age was 36 years (range, 19-56 years). There were 11 type D3 nonunions (Herbert classification) and 15 type D4. Five patients had delayed presentation of over 5 years. Fourteen patients had previously undergone an unsuccessful surgical attempt to treat their nonunion. The patients experienced no postoperative complications. Overall union rate was 97% (31 of 32 patients), with 72% cross-sectional trabecular percentage bridging at 12 weeks. Pain subsided after surgery and patients experienced improvements in both their Quick Disabilities of the Arm, Shoulder, and Hand (QuickDASH) and Modified Mayo Wrist Score (MMWS). Overall 41% and 42% gains in strength and wrist motion, relative to the contralateral normal side, were observed. At final follow-up, there were no differences between the treated and the untreated (healthy) hands, in terms of wrist range of motion, grip, or pinch strength. CONCLUSIONS: In this study, the use of VTMPF for difficult scaphoid nonunion in adults was associated with good general outcomes. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Bone nonunion management in children with a vascularized tibial periosteal graft.

BACKGROUND: Vascularized periosteal graft have demonstrated a tremendous bone healing capacity in children. The objective is to report outcomes on the use of vascularized tibial periosteal graft (VTPG) during bone reconstruction in a series of children with complex bone healing problems. PATIENTS AND METHODS: Cases were collected retrospectively since May 2013 to May 2019, excluding cases of congenital pseudarthrosis of the tibia. Mean age at surgery was 12.8 (range 11-18) years. Indications included treatment of recalcitrant bone nonunion and the prevention of bone allograft-host junction nonunion in seven and three patients, respectively. The periosteal flap, based on the anterior tibial vessels, was harvested as a free flap in six instances and as a pedicled flap in four. RESULTS: Mean follow-up was 25.2 months (range 8-36). The flap showed a 13.6 cm (range 9-16) and mean width 3.4 cm (range 2.7-3.9). Early bone union was achieved, initially through periosteal callus, followed by cortical union at mean times of 2 and 4 months, respectively, in nine cases. The flap was not successful in a patient with severe comorbidities. No donor site complications were registered. CONCLUSIONS: VTPG was fast and high effective for the treatment complex bone nonunion or the prevention of allograft nonunion in children.

Vascularized Periosteal Flaps Accelerate Osteointegration and Revascularization of Allografts in Rats.

BACKGROUND: Surgical reconstruction of large bone defects with structural bone allografts can restore bone stock but is associated with complications such as nonunion, fracture, and infection. Vascularized reconstructive techniques may provide an alternative in the repair of critical bone defects; however, no studies specifically addressing the role of vascularized periosteal flaps in stimulating bone allograft revascularization and osseointegration have been reported. QUESTIONS/PURPOSES: (1) Does a vascularized periosteal flap increase the likelihood of union at the allograft-host junction in a critical-size defect femoral model in rats? (2) Does a vascularized periosteal flap promote revascularization of a critical-size defect structural bone allograft in a rat model? (3) What type of ossification occurs in connection with a vascularized periosteal flap? METHODS: Sixty-four rats were assigned to two equal groups. In both the control and experimental groups, a 5-cm critical size femoral defect was created in the left femur and then reconstructed with a cryopreserved structural bone allograft and intramedullary nail. In the experimental group, a vascularized periosteal flap from the medial femoral condyle, with a pedicle based on the descending genicular vessels, was associated with the allograft. The 32 rats of each group were divided into subgroups of 4-week (eight rats), 6-week (eight rats), and 10-week (16 rats) followup. At the end of their assigned followup periods, the animals were euthanized and their femurs were harvested for semiquantitative and quantitative analysis using micro-CT (all followup groups), quantitative biomechanical evaluation (eight rats from each 10-week followup group), qualitative confocal microscopic, backscattered electron microscopic, and histology analysis (4-week and 6-week groups and eight rats from each 10-week followup group). When making their analyses, all the examiners were blinded to the treatment groups from which the samples came. RESULTS: There was an improvement in allograft-host bone union in the 10-week experimental group (odds ratio [OR], 19.29 [3.63-184.50], p < 0.05). In contrast to control specimens, greater bone neoformation in the allograft segment was observed in the experimental group (OR [4-week] 63.3 [39.6-87.0], p < 0.05; OR [6-week] 43.4 [20.5-66.3], p < 0.05; OR [10-week] 62.9 [40.1-85.7], p < 0.05). In our biomechanical testing, control samples were not evaluable as a result of premature breakage during the embedding and assembly processes. Therefore, experimental samples were compared with untreated contralateral femurs. No difference in torsion resistance pattern was observed between both groups. Both backscattered electron microscopy and histology showed newly formed bone tissue and osteoclast lacunae, indicating a regulated process of bone regeneration of the initial allograft in evaluated samples from the experimental group. They also showed intramembranous ossification produced by the vascularized periosteal flap in evaluated samples from the experimental group, whereas samples from the control group showed an attempted endochondral ossification in the allograft-host bone junctions. CONCLUSIONS: A vascularized periosteal flap promotes and accelerates allograft-host bone union and revascularization of cryopreserved structural bone allografts through intramembranous ossification in a preclinical rat model. CLINICAL RELEVANCE: If large-animal models substantiate the findings made here, this approach might be used in allograft reconstructions for critical defects using fibular or tibial periosteal flaps as previously described.

Vascularized Thumb Metacarpal Periosteal Flap for Scaphoid Nonunion in Adolescents: A Prospective Cohort Study of 12 Patients.

PURPOSE: To evaluate clinical and radiological outcomes after surgical treatment of scaphoid nonunion in adolescents with a vascularized thumb metacarpal periosteal pedicled flap (VTMPF). METHODS: Twelve patients younger than 18 years with scaphoid nonunion, who underwent a VTMPF procedure without bone grafting, were included for this prospective cohort study, at a mean follow-up of 10.2 months. Patients were operated on by 3 different hand surgeons at 3 hand surgery institutions. All patients received a VTMPF, but with different scaphoid internal fixation modalities, in 10 cases using 1 or 2 retrograde 2-mm headless compression screws and in 2 cases without internal fixation. RESULTS: In 11 boys and 1 girl, the mean age was 15.6 years. There were 1 type D1 nonunions (Herbert classification), 6 type D2, 2 type D3, and 2 type D4. Six patients had previously undergone an unsuccessful surgical attempt to treat their nonunion. The mean anterior bone defect was 3.5 mm in length. The patients experienced no postoperative complications. Successful consolidation was achieved in all cases, with 79% cross-sectional trabecular bridging at 12 weeks. Pain subsided after surgery and patients experienced improvements in both their Quick Disabilities of the Arm, Shoulder, and Hand (QuickDASH) and Modified Mayo Wrist Score (MMWS) results. Overall, 34% and 40% gains in strength and wrist motion, relative to the contralateral normal side, were observed. CONCLUSIONS: In this study, the use of VTMPF for scaphoid nonunion in children and adolescents is associated with generally good outcomes. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Vascularized thumb metacarpal periosteal pedicled flap for scaphoid nonunion: An anatomical study and pediatric case report.

PURPOSE: Through an anatomical review, the primary aim of this study was to delineate the dorsal thumb metacarpal (TM) periosteal branches of the radial artery (RA). In addition, we report here the clinical utility of a vascularized TM periosteal pedicled flap (VTMPF), supplied by the first dorsal metacarpal artery (FDMA), in a complex case of scaphoid nonunion. METHODS: Ten latex-colored upper limbs from fresh human cadavers were used. Branches of the RA were dissected under 3x loupe magnification, noting the periosteal branches arising from the FDMA. The VTMPF was measured for both length (cm) and width (cm). RESULTS: The FDMA provided a mean 12 periosteal branches (range 9 to 15), with a mean distance between branches of 0.5 cm (range 0.2-1.1), allowing for the design of a VTMPF which measured a mean 4 cm in length and 1.2 cm in width. We used a VTMPF to treat recalcitrant scaphoid nonunion, with a volar defect of 0.7 cm, in a 16-year-old boy. No bone graft was used. The patient experienced no postoperative complications. Successful consolidation was achieved three months after surgery, confirming the flap's survival. At 14-months of postoperative follow-up, the patient's VAS pain rating was 0 out of 100, and his DASH questionnaire score was 5. The patient had painless range that was 95% that of the contralateral limb. The patient's pinch and grip strengths were 6.5 kg and 28 kg, respectively (95% of unaffected side). CONCLUSIONS: VTMPF may be considered a valuable and reliable surgical option for scaphoid nonunion in complex clinical scenarios.

TRest as a New Diagnostic Variable for Chronic Exertional Compartment Syndrome of the Forearm: A Prospective Cohort Analysis of 124 Athletes.

OBJECTIVES: To measure the accuracy of currently used intracompartmental pressure (ICP) diagnostic variables for forearm chronic exertional compartment syndrome (CECS) and a new ICP diagnostic variable, TRest, the recovery time between the maximum ICP and return to resting pressure. DESIGN: Retrospective cohort. Level evidence IV. SETTING: University-affiliated tertiary hospital. PARTICIPANTS: Patients with suspected forearm CECS, 1990 to 2014. INTERVENTIONS: All patients underwent physical examination and exertional stress test, preceded and followed by measuring ICP in all suspicious CECS. Surgery was proposed when indicated. Minimum follow-up was 18 months. Final diagnosis was established at the final follow-up. MAIN OUTCOME MEASURES: Intracompartmental pressure measurements: PRest (baseline/pre-exercise pressure), P1 min (pressure 1 minute after exercise), P5 min (pressure 5 minutes after exercise), and TRest. Patients rated their pain and completed Quick-DASH in all follow-ups. Patients ultimately were classified into 4 groups (true positives, true negatives, false positives, and false negatives) for each ICP measurement relative to the final diagnosis. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were calculated. RESULTS: A total of 124 male athletes were diagnosed with CECS, 27 bilateral. Accuracy with standard ICP diagnostic variables was lower (sensitivity 73.5%, specificity 84.2%, positive predictive value 97%, and negative predictive value 31.4%) than with TRest (SN 100%, SP 94.7%, PPV 99.3%, and NPV 100%); 23% of patients would have been missed following the standard ICP diagnostic criteria. CONCLUSIONS: Diagnostic thresholds for current standard ICP measurements should be lowered. TRest, a new measure, might be more accurate.

Volar Plate Fixation to Treat Scaphoid Nonunion: A Case Series With Minimum 3 Years of Follow-Up.

PURPOSE: Several options exist for treating scaphoid nonunion. For selected cases, some authors recommend using a volar buttress plate. The aim of the study was to report the clinical and radiological outcomes achieved at a minimum of 3 years' follow-up of treating scaphoid nonunion with a scaphoid volar plate. METHODS: We retrospectively reviewed 15 patients with symptomatic scaphoid nonunion treated with scaphoid plate osteosynthesis and a bone graft from the volar aspect of the distal radius between January 2011 and November 2013. The patients' average age was 32 years (range, 21-62 years). No patient had undergone previous scaphoid surgery. Clinical assessments included wrist range of motion (ROM), grip strength, and a 10-point visual analog scale rating of pain. Further subjective assessment was performed using validated measurement tools. All patients underwent plain radiography with 6 different views and computed tomography before and after surgery. The scapholunate angle was measured to evaluate carpal alignment. RESULTS: The mean follow-up period was 42 months (range, 36-51 months). Bone union was obtained in 13 of 15 patients (87%) at an average of 5 months (range, 3-8 months) after surgery. Significant improvements in the scapholunate angle and visual analog scale pain score were observed. However, both wrist ROM and grip strength remained significantly decreased relative to the opposite side (62% and 55% of normal, respectively). Four patients experienced hardware complications: plate breakage (1 scaphoid) and screw back-out (3 scaphoids). Impingement between the radial styloid and the scaphoid plate was identified in 6 patients. Five patients required additional surgery to remove the plate. CONCLUSIONS: Our study indicates unsatisfactory results treating scaphoid nonunion with a volar scaphoid plate. Although the rate of union was comparable with that of other series, we noted more complications. We are concerned about both the high proportion of hardware complications and required secondary surgical procedures. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Clinical measurements for inferior, posterior, and superior glenohumeral joint contracture evaluation in children with brachial plexus birth palsy: intraobserver and interobserver reliability.

BACKGROUND: Glenohumeral (GH) contractures appear in most patients with incomplete motor recovery as a result of progressive development of periarticular muscle contractures. The objectives of this study were to describe a method to measure the passive range of motion of the glenohumeral joint (GHJ) in patients with brachial plexus birth palsy (BPBP) and to evaluate its intraobserver and interobserver reproducibility. METHODS: Three orthopedic surgeons measured the passive GHJ mobility of 25 patients older than 4 years with unilateral BPBP. Measurements were performed twice on both shoulders. They comprised the spinohumeral abduction angle (SHABD), spinohumeral adduction angle (SHADD), GH cross-body adduction (CBADD), and GH internal rotation in abduction (IRABD). Anterior GH contracture was not evaluated. RESULTS: Passive shoulder measurements obtained from the uninvolved and involved shoulders were as follows: SHABD, 42° and 18°, respectively; SHADD, 14° and -1°, respectively; CBADD, 71° and 41°, respectively; and IRABD, 54° and 37°, respectively. Contracture of the lower portion of the involved GHJ was observed in 18 of 25 patients (72%); the upper portion, in 16 of 25 (64%); and the posterior portion, in 22 of 25 (88%). Interobserver variation (intraclass correlation coefficient) was 0.91 (excellent) for SHABD, 0.63 (good) for SHADD, 0.86 (excellent) for CBADD, and 0.67 (good) for IRABD. Intraobserver variation (intraclass correlation coefficient) was 0.94 (excellent) for SHABD, 0.87 (excellent) for SHADD, 0.92 (excellent) for CBADD, and 0.89 (excellent) for IRABD. CONCLUSIONS: Clinical measurements of passive GHJ range-of-motion analyzed in this study showed excellent or good intraobserver and interobserver variability. Our study showed that BPBP resulted in a multidirectional GH contracture in most patients. We have described a simple and reliable way to evaluate passive GH motion, providing reliable anatomic landmarks.

Vascularized ulnar periosteal pedicled flap for forearm reconstruction: Anatomical study and a case report.

PURPOSE: Through an anatomical review, the aim of this study is to define the ulnar periosteal branches of the posterior interosseous vessels (PIV). In addition, we report the clinical utility of a vascularized ulnar periosteal pedicled flap (VUPPF), supplied by the investigated PIV, in a complex case of radial nonunion. METHODS: Ten upper limbs latex colored from fresh human cadavers were used. Branches of the PIV were dissected under 2.5× loupe magnification, noting the periosteal, muscular, and cutaneous branches arising distal to the interosseous recurrent artery. The VUPPF was measured in length (cm) and width (cm). RESULTS: The PIV provided a mean 12.8 periosteal branches to the ulna distributed along the most distal 15 cm, with a mean distance between branches of 1 cm, allowing for the design of a VUPPF which measured a mean 12 cm in length and 1.7 cm in width. We used a VUPPF of 7.8 cm in length and 2 cm in width to treat extensive nonvascularized bone graft nonunion with a defect of 2 cm of the left radius in a 6-year-old girl, secondary to previous Ewing's Sarcoma reconstruction. Successfully consolidation was achieved 6-months after surgery. The patient did not present postoperative complications. At 2-years of follow-up after surgery, active supination was 80° and pronation 0° (due an incomplete interosseous ossification); grip strength was 80% that of the opposite hand. The patient had resumed all her daily activities. CONCLUSIONS: VUPPF may be considered a valuable and reliable surgical option for forearm reconstruction in complex clinical scenarios.

Free vascularized tibial periosteal graft with monitoring skin island for limb reconstruction: Anatomical study and case report.

Several types of vascularized periosteal flaps have recently been described for the treatment or prevention of complex non-union in pediatric patients. Among them, a vascularized tibial periosteal graft (VTPG), supplied by the anterior tibial vessels (ATV), has been used successfully as a pedicled flap in a few patients. The purpose of the study is to describe the periosteal branches of the ATV, as well as the cutaneous and muscular branches by means of an anatomical study. In addition, to report on the use of VTPG as a free flap with a monitoring skin island in a clinical case. A mean of 6.5 periosteal branches (range 5-7) were found. In all cases we located a cutaneous perforator branching from one of the periosteal branches located at the midlevel of the leg. We performed a two-stage reconstruction of a recalcitrant non-union and residual shortening of the right tibia in a 17-year-old boy. After nonunion focus distraction, we used a massive bone allograft fixed with a nail and covered by a VTPG as a biological resource. Allograft consolidation was achieved 5.5 months after surgery. At eighteen months after surgery, no complications were observed and the patient had resumed all his daily activities, despite a residual 2-cm limb-length discrepancy. VTPG may be considered as a valuable surgical option for bone reconstruction in complex biological scenarios in the young population. © 2015 Wiley Periodicals, Inc. Microsurgery 37:248-251, 2017.

Surgical Decompression of Exertional Compartment Syndrome of the Forearm in Professional Motorcycling Racers: Comparative Long-term Results of Wide-Open Versus Mini-Open Fasciotomy.

OBJECTIVE: To compare the long-term results of 2 surgical techniques for forearm chronic exertional compartment syndrome (CECS) in professional motorcycling racers and to study a new diagnostic variable for CECS, TRest. DESIGN: Retrospective case series. LEVEL OF EVIDENCE: 4. SETTING: University Hospital. PARTICIPANTS: Thirty-four patients identified from a surgical database who had been operated on for upper-limb CECS. INTERVENTIONS: The purpose of the study was to report and compare the long-term results of 2 surgical techniques using fasciotomies [wide-open fasciotomy (WOF) versus mini-open fasciotomy (MOF)] for forearm CECS in professional motorcycling racers. PATIENT CHARACTERISTICS: Pain [visual analog scale (100-point scale)] and functional scores (Quick-DASH) at 3 months after surgery and at regular intervals during clinical visits. Surgical complications: Level of satisfaction with the outcome. Time to return to full activity after surgery. RESULTS: Thirty-four racers, 22 with bilateral involvement (n = 56), were diagnosed with CECS and were treated either with WOF (n = 24) or MOF (n = 32) depending on the surgeon's indication. Mini-open fasciotomy was usually selected in cases who need a faster recovery because of competition schedule. Visual analog scale and Quick-DASH improved 63 and 73 points, respectively (P < 0.001) with no significant difference between both surgical methods (P = 0.512). Both WOF and MOF were equally effective. Ninety-four percent of the patients were satisfied after 45.35 ± 12 months of follow-up, with no significant difference between surgical groups (P = 0.642). The time to return to full activity was 2.7 ± 1 week, also with no significant difference (P = 0.544). The time between when the stress testing was halted for pain and the return to baseline pressure (TRest) was superior to 15 minutes (defined as the mean minus 2 SDs) in 100% patients. CONCLUSIONS: Surgical open or mini-invasive fasciotomy is equally successful in motorcycling racers with forearm CECS. Although the sensitivity of TRest is quite high in our series, further studies are still needed to validate its diagnostic value. CLINICAL RELEVANCE: Surgical open or mini-invasive fasciotomy is equally successful in motorcycling racers with forearm CECS.