Chronic Exertional Compartment Syndrome in Athletes.

Chronic exertional compartment syndrome (CECS) refers to exercise-induced, reversible increases in pressure within well-defined inelastic fascial compartments leading to compromised tissue perfusion followed by functional loss, ischemic pain, and neurologic symptoms. Symptoms typically resolve when the activity ceases and there are usually no permanent sequelae. In the upper extremity, this condition most commonly affects athletes during sports requiring repetitive and vigorous gripping, such as rowers. In addition to clinical history and examination, a number of methods aid diagnosis, including compartment pressure measurements, magnetic resonance imaging, and near infrared spectroscopy. When symptoms persist despite conservative treatment, multiple operative techniques have been described to treat CECS including open, mini-open, and endoscopic release of involved compartments. We review the pathophysiology, diagnostic modalities, treatment strategies, and outcomes data for CECS of the upper extremity while highlighting areas of residual controversy.

Extensor Carpi Ulnaris Subsheath Reconstruction.

Acute extensor carpi ulnaris (ECU) subsheath injury and chronic subsheath insufficiency may result in symptomatic ECU instability at the level of the distal ulna osseous sulcus. Associated ulnocarpal (ie, triangular fibrocartilage complex) and ECU intrinsic tendinopathic changes may accompany subsheath pathologies and require concomitant treatment. Surgical treatment is indicated in refractory cases despite nonoperative treatment and may consist of repair of the torn edge of the ECU subsheath or, more frequently, reconstruction utilizing a radially based extensor retinacular sling. An ECU subsheath reconstructive technique is detailed.

Informed shared decision-making and patient satisfaction.

BACKGROUND: Evidence suggests that when patients have a role in medical decisions they are more satisfied with their health care. OBJECTIVE: To assess predictors of patient satisfaction, ratings of the provider's informed shared decision-making (ISDM), and disability among patients with orthopedic pain complaints. RESEARCH DESIGN: A total of 130 patients with nontraumatic painful conditions of the upper extremity were enrolled. Medical encounters were audio recorded and coded by 2 independent coders. Eight ISDM elements and a total ISDM score were evaluated. Bivariate and multivariable analyses were used to answer the study questions. MEASURES: Participants completed the Princess Margaret Hospital Patient Satisfaction with their Doctor Questionnaire to measure satisfaction; the Disabilities of Arm, Shoulder and Hand questionnaire; the Patient Health Questionnaire-9 to measure depression; the Whiteley Index to assess heightened illness concerns; and the pain catastrophizing scale to assess coping strategies in response to pain. RESULTS: Less health anxiety, female gender, the ISDM element Identify choice, and any specific diagnosis determined 22% of the variation in satisfaction. Less health anxiety and unemployed unable to work compared with full-time working status were associated with a better rating of shared decision-making on the ISDM. Catastrophic thinking, female gender, symptoms of depression, and any specific diagnosis were associated with greater disability. Catastrophic thinking and symptoms of depression were the greatest contributors to the variation in disability. CONCLUSIONS: Psychologic factors are the strongest determinants of patient satisfaction, ratings of shared decision-making on the ISDM, and upper-extremity disability. Health anxiety is the most important factor in ratings of patient satisfaction and ISDM, whereas depression and catastrophizing are salient predictors of disability. LEVEL OF EVIDENCE: Prognostic level I.

Headless bone screw fixation for combined volar lunate facet distal radius fracture and capitate fracture: case report.

We report a case of concomitant fractures of the volar lunate facet of the distal radius and capitate body. Surgical fixation was achieved with open reduction internal fixation using headless compression screws for both fractures. Because of the nature of complications seen after both operative and nonsurgical management, these fractures warrant particular attention.

Clinical outcomes of limited-open retrograde intramedullary headless screw fixation of metacarpal fractures.

PURPOSE: To evaluate clinical and radiographic outcomes in patients treated with limited-open retrograde intramedullary headless compression screw (IMHS) fixation for metacarpal neck and shaft fractures. METHODS: Retrospective review of prospectively collected data on a consecutive series of 39 patients (34 men; 5 women), mean age 28 years (range, 16-66 y) treated with IMHS fixation for acute displaced metacarpal neck/subcapital (N = 26) and shaft (N = 13) fractures at a single academic practice between 2010 and 2014. Preoperative magnitude of metacarpal neck angulation averaged 54° (range, 15° to 70°), and shaft angulation averaged 38° (range, 0° to 55°). Patients used a hand-based orthosis until suture removal and began active motion within the first week. Clinical outcomes were assessed with digital goniometry, pad-to-distal palmar crease distance, and grip strength. Time to union and radiographic arthrosis was assessed. Twenty patients reached minimum 3-month follow-up, with a mean of 13 months (range, 3-33 mo). RESULTS: All 20 patients with minimum 3 months of follow-up achieved full composite flexion, and extensor lag resolved by 3-week follow-up. All patients demonstrated full active metacarpophalangeal joint extension or hyperextension. Grip strength measured 105% (range, 58% to 230%) of the contralateral hand. No secondary surgeries were performed. There were 2 cases of shaft re-fracture from blunt trauma following prior evidence of full osseous union with the screw in place. All patients achieved radiographic union by 6 weeks. There was no radiographic arthrosis at latest follow-up. One patient reported occasional clicking with metacarpophalangeal joint motion not requiring further treatment. CONCLUSIONS: Limited open retrograde IMHS fixation proved to be safe and reliable for metacarpal neck/subcapital and axially stable shaft fractures, allowed for early postoperative motion without affecting union rates, and obviated immobilization. This technique offers distinct advantages in select patients. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Outcomes of digital zone IV and V and thumb zone TI to TIV extensor tendon repairs using a running interlocking horizontal mattress technique.

PURPOSE: Biomechanical evidence has demonstrated that the running interlocking horizontal mattress (RIHM) repair for extensor tendon lacerations is significantly stronger, with higher ultimate load to failure and less tendon shortening compared with other techniques. We investigated the efficacy and safety of primary extensor tendon repair using the RIHM repair technique in the fingers followed by the immediate controlled active motion protocol, and in the thumb followed by a dynamic extension protocol. METHODS: We conducted a retrospective review of all patients undergoing extensor tendon repair from August 2009 to April 2012 by single surgeon in an academic hand surgery practice. The inclusion criteria were simple extensor tendon lacerations in digital zones IV and V and thumb zones TI to TIV and primary repair performed using the RIHM technique. We included 8 consecutive patients with 9 tendon lacerations (3 in the thumb). One patient underwent a concomitant dorsal hand rotation flap for soft tissue coverage. We used a 3-0 nonabsorbable braided suture to perform a running simple suture in 1 direction to obtain a tension-free tenorrhaphy, followed by an RIHM corset-type suture using the same continuous strand in the opposite direction. Average time to surgery was 10 days (range, 3-33 d). Mean follow-up was 15 weeks (range, 10-26 wk). We applied the immediate controlled active motion protocol to all injuries except those in the thumb, where we used a dynamic extension protocol instead. RESULTS: Using the criteria of Miller, all 9 tendon repairs achieved excellent or good results. There were no tendon ruptures or extensor lags. No patients required secondary surgery for tenolysis or joint release. No wound complications occurred. CONCLUSIONS: The RIHM technique for primary extensor tendon repairs in zone IV and V and T1 to TIV is safe, allows for immediate controlled active motion in the fingers and an immediate dynamic extension protocol in the thumb, and achieves good to excellent functional outcomes. These clinical outcomes support prior biomechanical data. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Adductor pollicis jamming injuries in the professional baseball player: 2 case reports.

We characterize a mechanism of injury, injury pattern, and treatment algorithm for adductor pollicis myotendinous injuries in 2 professional baseball players. Similar to myotendinous eccentric injuries in other anatomical areas, the adductor pollicis sustains a sudden forceful eccentric load during a jammed swing, resulting in intramuscular strain or tendon rupture. Based on the reported injury mechanism, and magnetic resonance imaging features of these myotendinous injuries, the thumb of the top hand during a jammed swing was suddenly and forcefully eccentrically abducted from a contracted and adducted position, resulting in injury patterns.

Quantitative 3-dimensional CT analyses of intramedullary headless screw fixation for metacarpal neck fractures.

PURPOSE: Fixation countersunk beneath the articular surface is well accepted for periarticular fractures. Limited open intramedullary headless compression screw (HCS) fixation offers clinical advantages over Kirschner wire and open techniques. We used quantitative 3-dimensional computed tomography to assess the articular starting point, surface area, and subchondral volumes used during HCS fixation of metacarpal neck fractures. METHODS: We simulated retrograde intramedullary insertion of 2.4- and 3.0-mm HCS and 1.1-mm Kirschner wires for metacarpal neck fracture fixation in 3-dimensional models from 16 adults. We used metacarpal head articular surface area (mm(2)) and subchondral volumes (mm(3)) and coronal and sagittal plane arcs of motion, during which we analyzed the center and rim of the articular base of the proximal phalanx engaging the countersunk entry site. RESULTS: Mean metacarpal head surface area mated to the proximal phalangeal base in neutral position was 93 mm(2); through the coronal plane arc (45°) was 129 mm(2), and through the sagittal plane arc (120°) was 265 mm(2). The mean articular surface area used by countersunk HCS threads was 12%, 8%, and 4%, respectively, in each of these arcs. The 1.1-mm Kirschner wire occupied 1.2%, 0.9%, and 0.4%, respectively. Mean metacarpal head volume was 927 mm(3). Mean subchondral volume occupied by the countersunk portion was 4%. The phalangeal base did not overlap the dorsally located countersunk entry site through most of the sagittal plane arc. During coronal plane motion in neutral extension, the center of the base never engaged the dorsally located countersunk entry site. CONCLUSIONS: Metacarpal head surface area and subchondral head volume occupied by HCS were minimal. Articular surface area violation was least during the more clinically relevant sagittal plane arc of motion. CLINICAL RELEVANCE: The dorsal articular starting point was in line with the medullary canal and avoided engaging the center of the articular base through most of the sagittal plane arc. Three-dimensional computed tomography data support the use of an articular starting point for these extra-articular fractures.

Radially Based Extensor Retinacular Sling Reconstruction for Extensor Carpi Ulnaris Subsheath Injuries.

Purpose: Extensor carpi ulnaris (ECU) subsheath injuries result in ulnar-sided wrist pain and often present concurrently with intrinsic ECU pathology and ulnocarpal compartment injuries. There is a lack of surgical outcome data despite the variety of described ECU subsheath pathologies and reconstructive strategies. Methods: We retrospectively reviewed our hand-center experience of 33 patients who prospectively underwent radially based extensor retinacular sling ECU subsheath reconstruction by 4 hand surgery-fellowship-trained surgeons between April 2010 and April 2021. Preoperative clinical and magnetic resonance imaging findings, along with intraoperative findings, were cataloged. Statistical analysis was conducted via a 2-tailed paired t test. Results: The median age at the time of surgery was 44 years (range, 18-63 years). Twenty (60.6%) patients underwent reconstruction on their dominant wrist. The median time between symptom onset and surgery was 6.5 months (range, 4 days-16.1 years). Eight (18%) patients were collegiate-level or professional athletes. Ten (30.3%) patients had frank ECU snapping on the preoperative examination with no recurrence or apprehension on the postoperative examination. All 33 patients underwent a preoperative magnetic resonance imaging. Fifteen (45.4%) patients had intrinsic ECU tendinopathy, 19 (57.6%) patients had ECU tenosynovitis, 18 (54.5%) patients had triangular fibrocartilage complex tears, 20 (60.6%) patients had ulnocarpal synovitis, and 2 (6.1%) patients had lunotriquetral interosseous ligament tears. The mean postoperative pain on a visual analog scale was 0.39 ± 0.55. Grip strength, wrist flexion-extension, and pronosupination arcs (P < .05) showed excellent recovery after surgery. The mean time to unrestricted return to sports was 97.3 ± 19.7 days for the athletes in this study. There were no major complications. Conclusions: Radially based extensor retinacular sling ECU subsheath reconstruction resulted in satisfactory improvements in range of motion and grip strength. Although the mean improvements in these parameters were statistically significant, the clinical significance of these postoperative improvements remains to be defined. Type of study/level of evidence: Therapeutic, Level IV.

Radially Based Extensor Retinacular Sling Reconstruction for Extensor Carpi Ulnaris Subsheath Injuries in Elite Athletes.

BACKGROUND: Extensor carpi ulnaris (ECU) subsheath injuries are an increasingly recognized cause of ulnar-sided wrist pain in elite athletes. There is a lack of surgical outcome data in elite athletes, and unique considerations exist for these patients. METHODS: We performed a retrospective review of our hand center experience of 14 elite professional or collegiate athletes who prospectively underwent radially based extensor retinacular sling ECU subsheath reconstruction by 3 hand surgery-fellowship-trained surgeons between April 2011 and April 2021. Clinical, magnetic resonance imaging (MRI), and intraoperative findings were cataloged. Subgroup analyses of elite hockey players and acute subsheath injuries were also conducted. Statistical analysis was performed via a 2-tailed paired t test. RESULTS: Mean age at the time of surgery was 21.3 years (range, 18-34). Mean time from symptom onset to surgery was 102.1 ± 110.7 days. All 14 patients underwent preoperative MRI. Five patients (35.7%) had intrinsic ECU tendinopathy, 9 patients (64.3%) had ECU tenosynovitis, 6 patients (42.9%) had triangular fibrocartilage complex tears, and 9 patients (64.3%) had ulnocarpal synovitis. Mean postoperative pain on a Visual Analog Scale was 0.25 ± 0.43. Grip strength (P = .001), wrist flexion-extension (P = .037), and pronosupination arcs (P = .093) showed excellent recovery postoperatively. Mean time to unrestricted return to sports was 92.5 ± 21.0 days. There were no complications. Subgroup analyses found similar functional improvement and characterized injury patterns. CONCLUSIONS: Overall, our findings suggest surgical management of ECU subsheath injuries is a viable option in both acute and chronic settings in elite athletes and may be favorable compared with nonoperative management.

Symptomatic neural loop causing hemidigital anesthesia: case report.

Digital neural loops were identified over a century ago and are common findings in cadaveric studies of palmar and digital anatomy. Symptomatic digital neural loops are rare. We report a case of hemidigital anesthesia resulting from a proper digital nerve neural loop penetrated by its common digital artery in the palm. After neurolysis of the median nerve and the common and proper digital nerves to the third webspace, we transected the common digital artery, transposed it out of the neural loop, and repaired it. The patient's sensory symptoms fully resolved over 6 weeks. The differential diagnosis, diagnostic workup, and surgical treatment are reviewed.

Excision of Hook of Hamate Fractures in Elite Baseball Players: Surgical Technique and Return to Play.

Background: Hook of hamate fractures are relatively common in baseball players, but the proper diagnosis and surgical technique can be challenging. Outcomes after surgical excision, as well as optimal surgical technique, in elite baseball players have not been clearly established. Hypothesis: Excision of hook of hamate fractures with a technique tailored to elite professional and collegiate baseball players will lead to high rates of return to play within a short time. Study Design: Case series; Level of evidence, 4. Methods: We reviewed the cases of 42 elite athletes who underwent surgical excision of 42 hook of hamate fractures at a single academic hand surgery practice from 2006 to 2020. The athletes competed at the professional (n = 20) or varsity collegiate (n = 22) baseball levels and were treated using the same surgical technique tailored toward the elite athlete. The clinical history, timing of surgery, complications, and time to return to play were recorded for each patient. Results: All 42 patients underwent an excision of their hook of hamate fracture at a mean of 7.2 weeks (range, 0.5-52 weeks) from the onset of symptoms. All but one patient were able to return to full preinjury level of baseball participation within 6 weeks from the date of surgery, with a mean return to sport of 5.4 weeks (range, 3-8 weeks). Two patients returned to the operating room-1 for scar tissue formation causing ulnar nerve compression and 1 for residual bone fragment causing pain and ulnar nerve compression. Conclusion: Surgical excision of hook of hamate fractures in elite baseball players showed a very high rate of return to play within 6 weeks. Meticulous adherence to the described surgical technique tailored to athletes optimizes clinical outcomes and avoids complications.

Primary subcutaneous Alternaria alternata infection of the hand in an immunocompromised host.

We describe a case of a progressive subcutaneous Alternaria alternata infection in the hand of a patient with chronic lymphocytic leukemia (CLL). The diagnosis was based upon the examination of tissue biopsy and isolation of the etiologic agent in culture. The identity of the isolate was determined by phenotypic characteristics and by sequencing the ITS and D1/D2 regions of the rDNA. Despite combination therapy with voriconazole and micafungin, the lesion continued to progress. Posaconazole therapy, along with surgical excision of the infected tissue, resulted in the eradication of infection. The limitations of the clinical management of invasive Alternaria infections are discussed.

Avulsion injuries of the flexor digitorum profundus tendon.

Avulsions of the flexor digitorum profundus tendon may involve tendon retraction into the palm and fractures of the distal phalanx. Although various repair techniques have been described, none has emerged as superior to others. Review of the literature does provide evidence-based premises for treatment: multi-strand repairs perform better, gapping may be seen with pullout suture-dorsal button repairs, and failure because of bone pullout remains a concern with suture anchor methods. Clinical prognostic factors include the extent of proximal tendon retraction, chronicity of the avulsion, and the presence and size of associated osseous fragments. Patients must be counseled appropriately regarding anticipated outcomes, the importance of postoperative rehabilitation, and potential complications. Treatment alternatives for the chronic avulsion injury remain patient-specific and include nonsurgical management, distal interphalangeal joint arthrodesis, and staged reconstruction.

Outcome after tendon transfers to restore wrist extension in children with brachial plexus birth injuries.

Children with brachial plexus birth injuries often require tendon transfer to restore active wrist extension and maximize hand function. The purpose of this study is to assess the clinical results in children with brachial plexus birth injuries after tendon transfer to reconstruct active wrist extension. Over a 10-year period, 21 children (11 male, 10 female) underwent tendon transfer to reconstruct active wrist extension by a single surgeon. Eight patients had C5/C6/C7 injury and 13 patients had global palsy (C5-T1). The average age at surgery was 5.5 years (range, 3 to 8 y). Restoration of wrist extension was measured according to the functional scale of Duclos and Gilbert. The mean duration of follow-up was 36 months (minimum follow-up of 1 y). At latest follow-up, 14 (66%) children (C5/C6/C7, n=8; global, n=6) demonstrated active wrist extension ≥ 30 degrees. Within the global injury subcohort, 3 patients demonstrated static extension of the wrist. Four failures occurred in the global palsy group. Children with absent active wrist extension after a brachial plexus birth injury can benefit from a tendon transfer. The more severe global palsy cases have a worse outcome.

Osteochondritis dissecans of the capitellum: current concepts.

Osteochondritis dissecans (OCD) of the capitellum is an uncommon disorder seen primarily in the adolescent overhead athlete. Unlike Panner disease, a self-limiting condition of the immature capitellum, OCD is multifactorial and likely results from microtrauma in the setting of cartilage mismatch and vascular susceptibility. The natural history of OCD is poorly understood, and degenerative joint disease may develop over time. Multiple modalities aid in diagnosis, including radiography, MRI, and magnetic resonance arthrography. Lesion size, location, and grade determine management, which should attempt to address subchondral bone loss and articular cartilage damage. Early, stable lesions are managed with rest. Surgery should be considered for unstable lesions. Most investigators advocate arthroscopic débridement with marrow stimulation. Fragment fixation and bone grafting also have provided good short-term results, but concerns persist regarding the healing potential of advanced lesions. Osteochondral autograft transplantation appears to be promising and should be reserved for larger, higher grade lesions. Clinical outcomes and return to sport are variable. Longer-term follow-up studies are necessary to fully assess surgical management, and patients must be counseled appropriately.

Deep Penetrating Kerosene Exposure in the Hand Mimicking Deep Space Infection.

In this case report, we review the clinical course of an adolescent who sustained a low-velocity, low-pressure, penetrating wound to the midpalmar aspect of the hand with a kerosene containing thermometer. The exposure led to a clinical picture of an acute midpalmar abscess within 24 hours. Despite irrigation and debridement of frank purulent material, cultures and pathology remained negative for infection. This case highlights that kerosene exposure, although rare, can mimic an acute infection with intraoperative findings consistent with sterile purulence. Hand surgeons must be aware of the effects of deep soft tissue exposure with hydrocarbons, such as kerosene and petrol, and should have a low threshold to take the patient to the operating room for thorough irrigation and debridement of the offending substance.

Low Rate of Complications Following Intramedullary Headless Compression Screw Fixation of Metacarpal Fractures.

Background: There has been a recent increase in the use of headless compression screws for fixation of metacarpal neck and shaft fractures as they offer several advantages, and minimal complications have been reported. This study aimed to evaluate the clinical complications and their solutions following retrograde intramedullary headless compression screw fixation of metacarpal fractures. We describe complications and the approach to their management. Methods: We performed a multicenter case series through retrospective review of all patients treated with intramedullary headless screw fixation of metacarpal fractures by 3 fellowship-trained hand surgeons. Patient demographics, implant used, type of complication, pre- and postoperative radiographs, operative reports, and sequelae were reviewed for each case. We defined complications as infection, loss of fixation, hardware failure, malrotation, nonunion, malunion, metal allergy, and any repeat surgical intervention. Results: Four complications (2.5%) were identified through the review of 160 total metacarpal fractures. One complication was a nickel allergy, one was a broken screw after repeat trauma, and 2 patients had bent intramedullary screws. Screw removal in 3 patients was simple and without complications or persistent limitations. One bent screw with a refracture was left in place. No serious complications were seen. Conclusion: Intramedullary screw fixation of metacarpal fractures is safe with a low incidence of complications (2.5%) that can be safely and effectively managed.

Clinical Outcomes of Limited Open Intramedullary Headless Screw Fixation of Metacarpal Fractures in 91 Consecutive Patients.

Background: The objective of the study is to evaluate clinical and radiographic outcomes in patients treated with limited-open retrograde intramedullary headless screw (IMHS) fixation for metacarpal neck and shaft fractures. Methods: Retrospective review of 91 consecutive patients (79 men; 12 women), mean age 28 (range =15-69) years, treated with IMHS fixation for acute displaced metacarpal neck (N = 56) and shaft (N = 35) fractures at a single institution. Mean follow-up was 10 (range = 1-71, median = 3) months. Preoperative mean magnitude of metacarpal neck angulation was 48° (range = 0°-90°), and mean shaft angulation was 42° (range = 0°-70°). Active motion was initiated within 5 days postoperatively. Clinical outcomes were assessed with digital goniometry, grip strength, and return to full activity. The time to radiographic union and radiographic arthrosis was assessed. Results: All 91 patients achieved full functional arc of metacarpophalangeal (MCP) motion, and all achieved full active MCP extension or hyperextension. At mean follow-up of 10 months, postoperative mean MCP joint flexion-extension arc was 88° (range = 55°-110°). Grip strength was available for 52 patients and measured 104.1% of the contralateral hand (range = 58%-230%). Radiographic union data were available for 86 patients. Seventy-six percent (65/86) achieved radiographic union by the end of week 6 (range = 2-10 weeks). Early arthrosis was noted in 1 patient at the MCP. There were 3 cases of shaft refracture after recurrent blunt trauma, following prior evidence of full osseous union. Conclusions: The IMHS fixation is safe, reliable, and durable for metacarpal neck/subcapital, axially stable shaft fractures, and select delayed unions or malunions. It allows for early postoperative motion without affecting union rates and obviates immobilization. This technique offers distinct advantages over formal open reduction and percutaneous Kirschner wire techniques.