Dorsal Block Splinting of Volar Plate Injuries at Neutral Position.

PURPOSE: Volar plate injuries of the proximal interphalangeal joint (PIPJ) of a finger are common, often occurring in sporting or workplace incidents. Treatment of a stable dorsal dislocation entails a conservative approach, directed at preventing hyperextension and allowing the ligament to heal in position that does not negatively impact on healing. Current treatment regimens include dorsal block splinting (DBS) in 30° of flexion, which maintains the PIPJ in flexion in order to prevent any strain on the healing tissue while attempting to restore anatomical position. Recognized complications of DBS are flexion deformities of the joint and hyperextensibility. We propose that DBS in neutral position, rather than 30° flexion, reduces hyperextensibility as well as preventing flexion deformities of the PIPJ, allowing sooner return of function and participation in daily activities. METHODS: A retrospective review of patients sustaining volar plate injuries was undertaken. Inclusion criteria involved patients splinted at either 30° or neutral position, both those having undergone surgical or conservative regimens and the joint assessed as stable. Data were collected focusing on the number of hand therapy sessions, the time from injury to discharge, active angles of flexion and extension of the PIPJ, and pain. RESULTS: Over 2 years, 125 patients were treated for volar plate injuries: 20 with DBS at neutral position and 105 DBS at 30°. There were no significant differences in patient demographics. There were fewer hand therapy appointments required for those splinted in neutral position and weeks of hand therapy predischarge. There were no flexion deformities for patients undergoing DBS at neutral position, but no difference in PIPJ extension. There were no differences in hyperextensibility or pain. CONCLUSIONS: Dorsal block splinting at neutral position results in fewer flexion deformities following volar plate injuries of the PIPJ, without resultant hyperextensibility. There are fewer demands on hand therapy. Dorsal block splinting at neutral position may result in better function for patients suffering this injury, with decreased complications and quicker return to daily activities.

The Central Slip Fracture: Results of Operative Treatment of Volar Fracture Subluxations/Dislocations of the Proximal Interphalangeal Joint.

PURPOSE: Fractures of the base of the middle phalanx are particularly challenging. Dorsal fracture-subluxations/dislocations of the proximal interphalangeal (PIP) joint are relatively common, but the volar fracture-subluxation/dislocation, the so-called "central slip fracture," is quite rare. The current study presents our experience with surgically treated patients with central slip fracture subluxation/dislocation with a minimum of 1 year follow-up. We hypothesized that the majority of patients with a central slip fracture-subluxation/dislocation have poor outcomes. METHODS: Thirteen patients with central slip fracture-subluxations/dislocation were identified from departmental billing records between 2003 and 2013. Nine patients completed the study follow-up examination and 8 were included in the final analysis. Clinical data assessed included age at injury, sex, mechanism of injury, injured digit, type of treatment, additional intervention(s), complications, length of follow-up, and range of motion follow-up. Fluoroscopic images and Quick Disabilities of the Arm, Shoulder, and Hand surveys were obtained at study follow-up. RESULTS: All patients underwent at least 1 surgery and 7 of 8 underwent open reduction. The average age at the time of injury was 41 years (range, 25-60 years). All injuries were closed. The average follow-up was 43 months (range, 17-67 months). Average passive and active range of motion of the PIP joint at follow-up were 62° and 54°, respectively. Six of 8 patients developed radiographic evidence of arthritic change and 4 experienced an outcome that required additional interventions. CONCLUSIONS: Patients should be counseled about the outcomes following surgical treatment of this uncommon, difficult injury. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic V.

A Review of Published Radiographic Indicators of Carpometacarpal Dislocation Including Their Application to Volar Dislocations Through a Case Study.

BACKGROUND: Carpometacarpal joint dislocation is an uncommon injury that is at risk of being overlooked on initial presentation. Dislocation in a volar direction is rare, with a number of case reports published in the literature. CASE REPORT: We report a case of volar dislocation at our institution, and review the application of two reported radiographic signs of carpometacarpal dislocation to volar dislocation. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Radiographic signs provide an aid to the emergency physician in the busy department. These are particularly helpful to rule out rare injuries. Carpometacarpal dislocations in a volar direction risk being missed by one radiographic sign reported in the literature, as this article highlights.

Use of the dorsal digital sensate free flap for reconstruction of volar soft tissue defect of digits.

Sensate cross-finger flaps and homodigital and heterodigital island flaps can usually be used for sensory reconstruction in the volar aspect of the digit. However, when the donor areas are damaged by concomitant injuries, these flaps are not available. The free dorsal digital flap, including both dorsal branches of the proper digital nerves, can be used as an alternative to resolve this problem. The flap was used in 16 patients with soft tissue defects on the volar aspect of the digits. For comparison, we collected a consecutive series of 31 patients with similar defects treated using a cross-finger flap including one branch. At final follow-up, the static 2PD of 2-branch flap is superior to 1-branch flap. The dorsal digital sensate free flap can be used as an alternative for the reconstruction of volar soft tissue defect of the digits. Sufficient sensory recovery can be achieved using this technique.

Distal radius volar locking plate design and associated vulnerability of the flexor pollicis longus.

PURPOSE: Flexor pollicis longus (FPL) tendon rupture is a well-documented complication related to the use of distal radius volar locking plates (VLPs). The final common pathway of flexor tendon rupture appears to involve implants prominent at the watershed line. We hypothesized that significant differences in VLP prominence exist between various plate designs. METHODS: Ten fresh frozen specimens were dissected to identify the path of the FPL in relationship to the distal radius at the watershed line. Five VLP designs were fixed to each specimen based on their anatomic fit, and slid distally until the distal edge of the plate reached the watershed line. The position of each fixed plate was evaluated by fluoroscopy. We used a 3-dimensional laser scanner to create computer models. The total surface area of plate prominence volar to the watershed line and the prominent area beneath the FPL were measured in the axial plane using computer software. RESULTS: At the watershed line, the FPL was located at 54% of the maximal width of the radius, as measured from its volar-ulnar corner. There were no significant differences in the location of plate fixation on lateral view radiographs according to the classification of Soong et al. The mean total surface area of plate prominence was 36 mm(2). The mean prominent area beneath the FPL was 10 mm2. Significant differences in plate prominence were noted for various designs. CONCLUSIONS: Despite optimal plate placement, various VLP designs were observed to have prominent profiles volar to the watershed line, to varying extents. CLINICAL RELEVANCE: The results raise concerns regarding interference between all of the analyzed VLP designs and the FPL. This study may help guide both implant design considerations and assist the surgeon in better understanding implant morphology as it relates to iatrogenic flexor tendon injury.

Clinical examination of plantar plate abnormality: a diagnostic perspective.

BACKGROUND: Plantar plate tears can cause pain and deformity in the forefoot but are frequently missed on initial examination. The purpose of this article was to evaluate the diagnostic statistics of common clinical examination parameters using observed intraoperative abnormality as the referenced standard. METHODS: Medical records of 90 patients (109 feet) who underwent a plantar plate repair were reviewed for the presence and onset of pain, plantar edema, instability of the second metatarsophalangeal (MTP) joint (drawer sign), pain with range of motion of the lesser MTP joint, first MTP joint range of motion, crossover toes, previous first ray surgery, and previous corticosteroid injections. Clinical examination findings were compared with intraoperative findings. Diagnostic statistics were calculated. RESULTS: Parameters with a high sensitivity (greater than 80%) were gradual onset of pain (93%), previous first ray surgery (100%), pain at the second metatarsal head (98%), edema at the second metatarsal head (95.8%), and a positive drawer sign (80.6%). High specificity (greater than 80%) was found for a positive drawer test (99.8%) and crossover toes (88.9%). Parameters with odds ratios greater than 1 were gradual onset of pain (1.104), pain at the second metatarsal head (6.125), edema at the second metatarsal head (2.875), and a positive drawer sign (1.389). CONCLUSION: Ninety-five percent of patients with a plantar plate tear presented with a gradual onset of forefoot pain, edema, and a positive drawer sign. A comprehensive clinical examination can heighten the suspicion for plantar plate tears when the data are interpreted correctly. LEVEL OF EVIDENCE: Level III, retrospective, diagnostic.

Operative treatment for volar plate avulsion fractures of the fingers.

We present our experience with 14 volar plate avulsion fractures of the fingers that were treated by excision or internal fixation and discuss the factors affecting the operative techniques and results. Fourteen cases were divided into two groups: the volar plate avulsions with excision (eight cases) and the volar plate avulsions with fixation (six). We compared clinical factors between fracture groups and between fixation methods. Fractures treated with fixation had the larger fragment, a shorter preoperative period, and the larger articular surface involvement than fractures treated with excision. Postoperative pain, average age, patients' satisfaction measured by VAS, DASH scores, grip, and pinch strength were not different between two groups. All fixated fractures healed and the time to union did not differ based on fixation method. The true size of the fracture fragment was larger than expected based on the X-ray and the fragments were usually rotated by pull of the volar plate or ligament. The size and shape of the avulsed fragment might be important factors to determine the treatment method, but the results after operation were not significantly different whether the fragment was excised or fixed.

Volar long locking compression plate fixation for distal radius fractures with metaphyseal and diaphyseal extension.

Comminuted distal radial fractures with metaphyseal and diaphyseal extension are uncommon and remain a challenge to treat. The purpose of this study was to assess the radiographic and functional outcomes of treatment with the volar long locking compression plate (LCP) system for distal radius fractures with metaphyseal and diaphyseal extension. This retrospective study was performed on 22 consecutive patients who were treated with open reduction and internal fixation with the application of a 2.4-mm-extra-long LCP volar distal radius plate. Patients were evaluated based on clinical signs and radiography studies. The average time to fracture union was 16 weeks. The volar tilt was restored to a mean of 10.1°. The radial length and radial inclination were restored to a mean of 12.8 mm and 23.6° at final follow-up, respectively. The mean loss of radial length was -1.0 mm at final follow-up as compared with the contralateral extremity. The average ulnar variance was positive 0.1 mm at final follow-up with a congruent distal radioulnar joint. The degree of collapse after fixation between immediate postoperative and final follow-up visit was -0.1 mm. Using the demerit-point system of the Gartland and Werley rating system, 14 results were rated as excellent, 5 as good and 1 as fair. DASH scores averaged 10.1 points. Based on our experience, the volar long LCP is useful in the management of comminuted fractures of the distal radius, in which there is proximal extension into the diaphysis and can avoid or minimize the complications of external fixation or dorsal bridging distraction plate.

Flexor tendon injuries following plate fixation of distal radius fractures: a systematic review of the literature.

BACKGROUND: Flexor tendon rupture is a rare but major complication associated with volar plate fixation of distal radius fractures. MATERIALS AND METHODS: We performed a systematic review to evaluate the demographics, clinical profile, treatment and outcome of flexor tendon rupture following volar plate fixation of distal radius fracture. Electronic searches of the MEDLINE, EMBASE, and Cochrane databases for systematic reviews and conference proceedings were performed. Studies were included if they reported flexor tendon rupture (partial or complete) as a complication of distal radius fracture plating (all levels of evidence). RESULT: Our search yielded 21 studies. There were 12 case reports and 9 clinical studies. A total of 47 cases were reported. There were 11 males and 23 females (n = 16 studies). The mean age was 61 years old (range 30-85). The median interval between the surgery and flexor tendon rupture was 9 months (interquartile range, 6-26 months). Twenty-nine plates were locking and 15 were nonlocking (n = 20 studies). FPL was the most commonly ruptured tendon (n = 27 cases, 57 %), with FDP to index finger being the second most common (n = 7 cases, 15 %). Palmaris longus tendon graft and primary end-to-end repair were the most common surgical methods used in cases of FPL tendon rupture. CONCLUSION: Flexor tendon rupture is a recognised complication of volar plating of distal radius fracture. Positioning of the plate proximal to the "watershed" line and early removal of the plate in cases with plate prominence or warning symptoms can reduce the risk of this complication.

Volar dislocation of second, third, and fourth carpometacarpal joints: a rare and easily missed diagnosis.

Volar carpometacarpal dislocation is a rare form of hand injury that can be easily missed without applying a high level of suspicion and performing a meticulous examination. In this case report, we present a rare case of compound volar dislocation of the second, third, and fourth carpometacarpal joints in a 40-year-old male. This was managed by closed reduction and the use of a mini external fixator. The patient regained a good range of motion in 6 weeks with no pain. It is important to diagnose and treat this injury in order to avoid the considerable morbidity associated with this condition.

Surgical Treatment of a Neglected Thumb Volar Plate Injury in an 11-Year-Old Girl: A Case Report.

BACKGROUND Volar plate injuries are rare and difficult to diagnose and treat. Only a few cases have been described on the thumb, especially in children, that resulted in swan-neck type deformity. Conservative treatment has been suggested as first-line management, but surgical reconstruction utilizing flexor digitorum superficialis tenodesis has been described for refractive cases. Only a few attempted surgical repairs of the volar plate have been reported, since it is a technically demanding procedure. CASE REPORT We present the case of a neglected thumb volar plate injury in an 11-year-old girl after a thumb hyperextension injury. The patient presented 2 months after her injury with functional disability of her thumb. Magnetic resonance imaging had been performed, with no signs of volar plate injury, and she was consequently treated with an extension-blocking splint, with no effect. Clinical examination raised the suspicion of a thumb volar plate injury, which was confirmed during surgical exploration. Therefore, fixation with a bone anchor was performed, and the metacarpophalangeal joint was immobilized in 20° flexion with a percutaneously inserted Kirschner wire. After splinting for 3 weeks, the patient had 10 sessions of physical therapy. At 6-week follow-up, she presented with excellent active and passive range of motion and absence of pain. CONCLUSIONS Magnetic resonance imaging did not have high sensitivity. Six weeks after surgery, full range of motion was achieved, with no stiffness or tenderness at the first metacarpophalangeal joint, suggesting that a thumb volar plate injury had been managed surgically with a suture anchor with excellent results.

Bilateral ulnar neuropathy secondary to volar displacement of flexor tendons following open carpal tunnel release: case report.

We report a case of bilateral ulnar neuropathy after bilateral open carpal tunnel release. Displacement of the flexor tendons anterior to the hook of hamate caused impingement on the ulnar nerve. Symptoms resolved after hook of hamate resection.

Uncommon hand injury to the batsman in 'gully cricket': report of two cases.

Volar plate injuries are typically caused by hyperextension of the proximal interphalangeal joint. These injuries are usually seen in sports where the ball comes in direct contact with the hands. Forceful dorsiflexion of the finger caused by the speeding ball leads to volar plate avulsion. In cricket, such finger injuries predominantly occur in fielders trying to catch or stop the speeding ball with bare hands. We report two unusual cases of volar plate avulsion injury occurring in batsmen that occurred during 'gully cricket' (street-cricket). We propose the possibility of a novel contrecoup-type mechanism causing this type of injury in the two cases. Both were successfully managed with splinting and had excellent recovery without any residual deformity or instability.

Factors Related to Failure of Conservative Treatment in Volar Plate Avulsion Fractures of the Proximal Interphalangeal Joint.

BACKGROUD: Volar plate avulsion fractures of the proximal interphalangeal (PIP) joint are a common hand injury and have been treated conservatively with favorable results. We assumed that conservative treatment of volar plate avulsion fractures of the PIP joint would be unsuccessful if the fracture fragment, even if small, was much displaced or rotated and that delayed excision of the avulsion fractures would result in good outcomes. We report clinical and radiological outcomes of conservative treatment of volar plate avulsion fractures of the PIP joint and risk factors for failure of conservative treatment. METHODS: We retrospectively reviewed the clinical and radiological outcomes of 88 volar plate avulsion fractures (85 patients) treated conservatively at first. In 18 of these fractures, delayed excision of the fracture fragment was required after an average of 75 days of conservative treatment for limited motion or pain of the joint. We compared parameters between failed cases and successful cases after conservative treatment. RESULTS: Compared to the successful cases, the failed cases had a higher prevalence of joint dislocation at the time of injury and greater pain, larger flexion contracture, and less further flexion after conservative treatment. The shape, comminution, and size of the fracture fragments were not related with the need for operation, but the operative cases had greater displacement and rotation of the fracture fragments than the conservative cases. After fragment excision, postoperative protection of the joint was not necessary, pain was reduced, and the mean range of motion increased. CONCLUSIONS: The presence of joint dislocation and greater displacement and rotation of the fragments may be associated with the failure of conservative treatment of volar plate avulsion fractures. Failed cases after conservative treatment could be resolved by delayed fragment excision with favorable results. Therefore, it might be appropriate to consider conservative treatment at first in almost all volar plate avulsion fractures of stable PIP joints.

Conservative treatment of stable volar plate injuries of the proximal interphalangeal joint in children and adolescents: a prospective study.

OBJECTIVES: The purpose of this study was to assess a standard conservative management for stable volar plate injuries of the proximal interphalangeal joint in children and adolescents. No study is available regarding this subject for this age group. METHODS: A prospective study was performed on 37 consecutive patients (aged between 9 and 15 years; mean, 13 years) with stable acute volar plate injuries of the proximal interphalangeal joints, including 22 avulsion fractures without dislocation. All patients had a standardized conservative treatment consisting of a dorsal aluminum extension block splinting at a 15-degree flexion for 10 days, followed by a spontaneous mobilization and taping to adjacent fingers for sports only. At follow-up visits, active and passive ranges of motion, swelling of the affected joints, analgesic intake, and pain perception by the patient were recorded. Regular follow-up consisted of standardized assessments at 2, 6, and 12 weeks, with additional consultations if symptoms persisted. RESULTS: Healing was uneventful, and hand therapy was not necessary to regain full range of motion in 32 of 33 children with a regular follow-up. The only flexion contracture observed responded well to splinting. Of the 33 patients, 31 had an excellent outcome and 2 had a good outcome. CONCLUSIONS: Dorsal extension block splinting was an efficient, simple, well-tolerated treatment for stable volar plate injuries of the proximal interphalangeal joint in a preliminary series of patients younger 16 years. Flexion contractures were rare and responded well to dynamic splinting.

A Flexor Digitorum Superficialis Tenodesis Technique for Surgical Treatment of Finger PIP Joint Volar Plate Chronic Avulsion.

Background: Chronic, post-traumatic, avulsion of the proximal interphalangeal (PIP) joint volar plate represents a disabling lesion. The purpose of this report is to describe a flexor digitorum superficialis (FDS) tenodesis using a mini-bone anchor inserted into the proximal phalanx, and its clinical outcome. Methods: 15 patients with chronic post-traumatic hyperextension instability of the PIP joint were treated surgically. From the first post-operative day patients were invited to start an early gradual joint active motion, wearing an extension block splint. Forty days after surgery, clinical evaluations were carried out, including: joint stability, pain and range of motion (ROM). The use of a circumferential splint was recommended for two further months, avoiding strenuous manual activities. The range of motion, time lost at work and the functional results were recorded six months after surgery. Results: At last follow up, 7 of the 13 reviewed patients presented an excellent functional recovery, with complete resolution of pain and stability with attainment of ROM comparable to the contralateral finger. The others 6 patients obtained good results, with remission of the functional impairment and pain, with either residual hyperextension or flexion contracture. There was one case of recurrence consecutively to a premature traumatic work-related activity. Conclusions: The FDS tenodesis via a bone anchor, combined with early active PIP joint protected motion, was shown in this study to be effective and reliable.

Accuracy and Reliability of Radiographic Estimation of Volar Lip Fragment Size in PIP Dorsal Fracture-Dislocations.

Background: A cadaveric study was performed to evaluate the accuracy and reliability of radiographic estimation of the volar lip fragment size in proximal interphalangeal joint fracture-dislocations. Methods: Middle phalangeal base volar lip fractures of varying size and morphology were simulated in 18 digits. Radiographs and digital photographs of the middle phalangeal joint surface were obtained pre- and postinjury. Ten orthopedic surgeons of varying levels of training estimated the fracture size based on radiographs. The estimated joint involvement on radiograph was compared with the digitally measured joint involvement. Results: Radiographic estimation underestimated the volar lip fragment size by 9.02%. Estimations possessed high intraobserver (0.76-0.98) and interobserver (0.88-0.97) reliabilities. No differences were detected between levels of surgeon training. Conclusions: The significant underestimation of the volar lip fragment size demonstrates the lack of radiographic estimation accuracy and suggests that surgeons should be mindful of these results when making treatment plans.

Volar approach to distal radius fractures.

The volar approach to the distal radius fracture is an important exposure in the treatment of these fractures, particularly with the growing enthusiasm for fixed-angle volar plating. With reports in the literature documenting complications associated with external fixation and dorsal plating, the volar approach has become ever more popular. Moreover, advancements in locking plate technology have expanded the indications for palmar plating beyond volar shear and volarly displaced fractures to include unstable intra-articular distal radius fractures. The surgical approach remains the same as when Henry recommended the interval between the flexor carpi radialis and the radial artery. Critical elements of the surgical technique include releasing the brachioradialis, gaining exposure all the way to the sigmoid notch, and building the intra-articular reduction, beginning with the intermediate column and moving radially. The relevant anatomy, indications and contraindications, postoperative care, and a pertinent case presentation are discussed.