Short-Term and Long-Term Therapeutic Results of Deep Flexor Tendon Repair in Zone II in Patients Referred to Imam Khomeini Hospital, Ahvaz, Southern Iran.

Background: Hand injury as an important concern for the surgeon and the patient requires proper and timely treatment to prevent complications such as infection and adhesions, and with a proper rehabilitation program, the patient returns to maximum function as soon as possible. We aimed to investigate the short-term and long-term treatment results of deep flexor tendon repair in in zone II. Methods: This retrospective study was performed on 34 patients with 45 injured fingers in the zone II referred to Ahvaz Imam Khomeini Hospital, Ahvaz, Iran during 2017-2019. The results of deep flexor tendons repair in two groups, immediate and delayed primary repair were assessed. Results: The mean age of the patients was 27.76 years. There was no significant remarkable between male and female in the incidence of complications such as infection, tendon rupture and adhesions. 29.4% (n=10) had poor outcome, 8.8% (n=3) had fair outcome, 29.4% (n=10) had good outcome and 32.4% (n=11) had excellent outcomes. 26.5% had adhesion and infection rate was 11.8%. Conclusion: Among surgeons, there is consensus for the primary repair of tendon injury, but there was no significant difference between the results of immediate and delayed primary repair. Although physiotherapy has been suggested as an effective factor in improving hand function, its positive effect on the range of motion of the fingers has not been proven.

Comparison the Range of Motion Following Early Versus Late Active Mobilization after Repairing Surgery on Flexor Tendon Injury in the Zone II: A Randomized Clinical Trial.

Background: Early or delayed mobilization of limb after flexor tendon rupture repairing has an effect on postoperative outcomes, however it is not yet clear whether early or late organ mobilization leads to more likelihood of recovery. We aimed to assess the effects of early and late active limb mobilization through rehabilitation after surgery on the range of motion and hand recovery. Methods: This randomized clinical study was performed in Sina Hospital, Tehran, Iran in 2022 on 80 patients with flexor tendon damage in the zone II, who underwent reconstructive surgery of superficial and deep tendons. Patients were randomly (using random number table) divided into two groups that for one group, rehabilitation was done early (starting after three days, n = 53) and for the other group, rehabilitation was done late (starting after three weeks, n = 27). The patients were examined postoperatively and following occupational therapy and the range of motion of their involved joints was calculated. Results: The means PIP extension Lag, PIP active flexion, DIP extension Lag, DIP active flexion and total active motion were all significantly higher in those patients planned for early mobilization as compared to those who considered for late mobilization(P=0.031). Such a significant difference was also revealed adjusting baseline parameters. Conclusion: Compared to the delayed start of hand flexor tendon mobility, the early start of these activities is associated with a much greater improvement in the movement function of this tendon.

Comparison of pulley plasty, pulley venting and resection of flexor digitorum superficialis slip after zone II flexor tendon repair: a cadaver study.

LEVEL OF EVIDENCE: V.

Incidencia, funcionalidad y reintegración laboral de pacientes con lesión de sistema flexor de la mano tratados quirúrgicamente en el Hospital Central Militar / Incidence, functionality and labor reintegration of patients with injury to the flexor system of the hand treated surgically at the Hospital Central Militar

Resumen Introducción: Las lesiones de la mano son uno de los padecimientos más frecuentemente atendidos en el Servicio de Cirugía Plástica y Reconstructiva del Hospital Central Militar, dentro de la amplia variedad de estas lesiones se encuentran las lesiones del sistema flexor. Objetivo: Estimar la incidencia, funcionalidad y tiempo de reintegración laboral en pacientes con lesiones de sistema flexor de la mano tratados en el Hospital Central Militar en el periodo del 1º de marzo del 2020 al 1º de marzo del 2022. Metodología: Estudio observacional, retrospectivo, longitudinal descriptivo en pacientes adultos con lesión de sistema flexor de la mano, en los cuales la causa de la lesión no haya condicionado un trauma complejo de la mano. Se utilizó como referencia los criterios de recuperación funcional de Strickland y Goglovac. Resultados: A pesar de que las lesiones de la zona II flexora en la literatura presentan un peor pronóstico para la recuperación de la función normal de la mano, los resultados demuestran que la mayor parte de los pacientes se encuentra en una escala funcional buena. Limitaciones del estudio: El estudio fue llevado a cabo durante el periodo comprendido por la pandemia COVID, por lo que las consultas subsecuentes con tiempos más alargados y el inicio tardío de las consultas de rehabilitación pudieron haber contribuido hacia una recuperación más deficiente de la recuperación funcional de los pacientes.

Abstract Introduction: Hand injuries are one of the conditions most frequently treated in the Plastic and Reconstructive Surgery Service of the Hospital Central Militar, within the wide variety of these injuries are injuries to the flexor system. Objective: To estimate the incidence, functionality and labor reintegration time in patients with hand flexor system injuries treated at the Hospital Central Militar in the period from March 1, 2020 to March 1, 2022. Methodology: Observational, retrospective, longitudinal, descriptive study in adult patients with injury to the flexor system of the hand, in whom the cause of the injury did not result in complex trauma to the hand. The Strickland and Goglovac functional recovery criteria were used as reference. Results: Despite the fact that flexor zone II lesions in the literature present a worse prognosis for the recovery of normal hand function, the results show that most of the patients are in a good functional scale. Limitations of the study: The study was carried out during the period covered by the COVID pandemic, so that subsequent consultations with longer times and the late start of rehabilitation consultations could have contributed to a poorer recovery of functional recovery. from the patients.

General Principles of Flexor Tendon Repair.

Flexor tendon repair techniques and rehabilitation have advanced tremendously in the past 50 years. However, the attributes of the ideal tendon repair articulated by Dr Strickland in 1995 hold true today. The ideal repair requires sutures easily placed in the tendon, secure suture knots, a smooth juncture of the tendon ends, minimal gapping, least interference with tendon vascularity, and sufficient strength throughout healing. When accomplished, the modern flexor tendon repair is a stout repair, sufficient for early mobilization and intrinsic tendon healing.

Isolated Flexor Digitorum Profundus Injuries in Flexor Zone II of the Hand: A Report of Five Cases.

Injuries of the hand's flexor tendons carry a poor prognosis, mainly if they are in zone II (also called 'the critical zone' or 'no man's land'). The superficial tendon in this zone ends by bifurcating and attaching to the sides of the middle phalanx, exposing the deep tendon that attaches to the distal phalanx. Thus, trauma to this zone may result in a complete cut to the deep tendon while the superficial one remains intact. The lacerated tendon, in turn, would be retracted proximally to the palm making it difficult to be found during wound exploration. The complex anatomy of the hand, particularly that of the flexor zones, may contribute to the misdiagnosis of a tendon injury. We report five cases of an isolated cut of the flexor digitorum profundus (FDP) tendon after traumatic injury to the flexor zone II of the hand. The mechanism of injury of each case is reported together with a clinical approach that guides ED physicians toward diagnosing flexor tendon injuries in hand. In cut wounds involving the flexor zone II of the hand, it should be not surprising to find that the deep tendon (FDP) is completely lacerated without an injury to the superficial one (FDS). Therefore, we conclude that a systematic examination approach for traumatic hand injuries is essential to ensure the proper assessment. Understanding the mechanism of injury, performing a systemic examination approach, and having basic anatomical knowledge of flexor tendons of the hand are essential to identifying tendon injuries, anticipating complications, and providing adequate healthcare.

Surgical strategy for airway management and bleeding control in penetrating neck injury in zone II: A case report.

We report the case of a 33-year-old man with a self-inflicted neck wound with severe hypopharynx injury, and hemorrhagic shock, which was well managed by a trauma surgeon trained in esophageal surgery. Training in cervical lymph node dissection for esophageal cancer could be useful in the management of penetrating neck injuries.

Ulnar Superficialis Slip Resection Versus Radial Superficialis Slip Resection: A Biomechanical Pilot Study.

BACKGROUND: There are numerous clinical scenarios during which the surgeon contemplates whether the radial or ulnar slip of the flexor digitorum superficialis (FDS) should be sacrificed. To date no study has assessed the point of failure of each one of the FDS slips in each digit, aiding the avid surgeon in deciding which slip to sacrifice. METHODS: A total of 41 digits were assessed, each digit was dissected, and a specimen containing the denuded bone of the middle phalanx with the attachments of the ulnar and radial FDS slips was obtained. An Instron 4502 device was utilized to biomechanically assess the point of failure of each slip of each digit. RESULTS: There was no statistical difference between ulnar and radial slip point of failure when compared across all digits and subjects. There was no statistical difference between male and female subject's specimens. The point of failure was higher in the ulnar slips of the second and third digits, whereas the point of failure was higher in the radial slips of the fourth and fifth digits. CONCLUSIONS: Sacrifice of a FDS slip may cause loss of grip strength. In several clinical scenarios one may be faced with the dilemma which FDS slip to sacrifice. Our findings show this is not an arbitrary choice. Hand surgeons should keep our findings in mind when deciding which slip to sacrifice, in effort to preserve function and strength in the injured hand.

Outcome of Surgical Repair and Rehabilitation of Flexor Tendon Injuries in Zone II of the Hand: Systematic Review and Meta-Analysis.

PURPOSE: We performed a systematic review and meta-analysis to determine an optimal rehabilitation protocol following surgical repair for flexor tendon injury in zone II of the hand. METHODS: Records from PubMed, Embase, and Cochrane were retrieved from their establishment to January 12, 2020. Seven studies were included in the final analysis. A total of 569 digits with a flexor tendon injury in zone II of the hand were included in this meta-analysis: 135 in a place and hold group; 161 in an active flexion and extension group; and 273 in an early passive motion group. RESULTS: There was no significant difference between the place and hold and early passive motion regimes in the incidence of rupture. There was a significant difference between the active flexion and extension and early passive motion regimes in the incidence of rupture. In the early active motion group, the possibility of 1 or more grades of improvement on the Strickland grading system was increased. CONCLUSIONS: The early active motion group obtained greater total active motion than the early passive motion group. A higher risk of rupture was noted in the active flexion and extension subgroup repaired by 2-strand core suture. The 2-strand technique was not sufficient for active flexion and extension protocols. Further study in multistrand tendon repair technique with early active exercise in zone II should be undertaken to determine its efficacy. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Comparison of Three-Dimensional Navigation-Guided Percutaneous Iliosacral Screw and Minimally Invasive Percutaneous Plate for the Treatment of Zone II Unstable Sacral Fractures.

OBJECTIVE: The percutaneous IS screws and the minimally invasive percutaneous plate are the most popular internal methods for Zone II unstable sacral fractures. However, the choice of fixation remains controversial for orthopaedic surgeons. The purpose of study was to evaluate and compare the clinical results of percutaneous iliosacral (IS) screw fixation under three-dimensional (3D) navigation and minimally invasive percutaneous plate fixation in the treatment of Zone II unstable sacral fractures. METHODS: A retrospective study was performed, including 64 patients with Zone II unstable sacral fractures who underwent percutaneous IS screw fixation under 3D navigation (navigation group) and minimally invasive percutaneous plate fixation (plate group) from January 2011 and March 2021 in our department. The age, gender, fracture type, mechanism of injury, injury severity score (ISS), time from admission to operation, operative time, intraoperative blood loss, hospital stay, incision length, follow-up time, time to clinical healing, and complications were recorded and analyzed. Matta standard was used to assess fracture reduction outcomes. The Majeed function system assessed functional outcomes at the last follow-up. RESULTS: The average follow-up time was (14.42 ± 1.57) months in the navigation group and (14.79 ± 1.37) months in the plate group. No statistical difference between the two groups in age, gender, fracture type, mechanism of injury, ISS, time from admission to operation, and time to clinical healing. However, significant differences were detected in operative time, intraoperative blood loss, hospital stay, and incision length (p < 0.001). According to Matta standard at 2 days postoperatively, the excellent and good rate was 91.42% in the navigation group, and it was 93.10% in the plate group. There was no significant difference between the two groups (p = 0.961). According to Majeed function system at the follow-up, the excellent and good rate was 97.14% in the navigation group, and 93.10% in the plate group. The difference between the two groups was not statistically significant (p = 0.748). There were no neurovascular injuries associated with this procedure. The incidence of complications was 44.82% (13/29) in the plate group, while 14.28% (5/35) in the navigation group (p = 0.007). CONCLUSION: This study found that compared with minimally invasive percutaneous plate fixation, percutaneous IS screw fixation under 3D navigation is a suitable option for the treatment of Zone II unstable sacral fractures. This approach is characterized by its shorter operation time, less surgical trauma, less bleeding, less hospital time, and fewer complications.

A Biomechanical Comparison of Gliding Resistance between Modified Lim Tsai and Asymmetric Tendon Repair Techniques in Zone II Flexor Tendon Repairs.

Background: Early active motion protocols have shown better functional outcomes in zone II flexor tendon lacerations. Different techniques of tendon repair have different effects on gliding resistance, which can impact tendon excursion and adhesion formation. For successful initiation of early active mobilisation, the repair technique should have high breaking strength and low gliding resistance. Previous studies have shown the Modified Lim-Tsai technique demonstrates these characteristics. The Asymmetric repair has also shown superior ultimate tensile strength. This study aims to compare the gliding resistance between the two techniques. Methods: FDP tendons from ten fresh frozen cadaveric fingers were randomly divided into two groups, transected completely distal to the sheath of the A2 pulley and repaired using either the Modified Lim-Tsai or Asymmetric technique. The core repair was performed with Supramid 4-0 looped sutures and circumferential epitendinous sutures were done with nylon monofilament Prolene 6-0 sutures. The gliding resistance and ultimate tensile strength were then tested. Results: The gliding resistance of the Asymmetric and Modified Lim-Tsai repair techniques were 0.2 and 0.95 N respectively. This difference was significant (p = 0.008). The Modified Lim-Tsai technique had a higher ultimate tensile strength and load to 2 mm gap formation, though this was not significant. Conclusions: Gliding resistance of the Asymmetric repair is significantly less than that of Modified Lim-Tsai. Ultimate tensile strength and load to 2 mm gap formation are comparable.

The zone II aorta is not a forbidden zone for occlusion in women with morbidly adherent placenta.

AIM: To evaluate the safety and efficacy of balloon occlusion at the Zone II aorta for the management of morbidly adherent placenta. METHODS: From September 2015 to October 2018, a total of 80 consecutive patients who were prenatally diagnosed with morbidly adherent placenta were assigned into two groups: the balloon occlusion group (n = 40) and the non-balloon occlusion group (n = 40).The intraoperative estimated blood loss, blood transfusion, urine output, serum creatinine, blood urea nitrogen and hysterectomy rate were recorded and compared between the two groups. RESULTS: The estimated blood loss in the balloon occlusion group was significantly lower than that in the non-balloon occlusion group (811.75 ± 299.93 ml vs 1529.75 ± 808.01 ml, P < 0.001). The median amount of packed RBCs transfused in the balloon occlusion group and non-balloon occlusion group was 0 U and 2 U, respectively (P = 0.001). The women in the former group had a lower blood transfusion rate than those in the latter group (30% vs 57.5%, P = 0.013). Hysterectomy occurred in none in the balloon occlusion group but in six patients in the non-balloon occlusion group (P = 0.011). CONCLUSION: The middle abdominal aorta (Zone II) is not a forbidden zone for occlusion as long as the single occlusion time is limited to 15 min. Balloon occlusion at the Zone II aorta can effectively reduce blood loss, transfusion requirements and hysterectomy rates in patients with morbidly adherent placenta.

Mid-term Results of Two-Stage Tendon Reconstruction of Zone II Flexor Tendon Injuries.

BACKGROUND: Secondary repair of flexor tendon injuries remains a challenging procedure for hand surgeons. Usually, secondary reconstruction should be performed by a staged approach. Two-stage surgical reconstruction of the flexor tendons by the Hunter technique is the salvage option in case of a severely damaged fibro-osseous canal or neglected flexor tendon injury. AIMS: We report the results of staged flexor tendon reconstruction in 10 patients (10 fingers) with neglected or failed primary repair of flexor tendon injuries in zone II. MATERIALS AND METHODS: Between 2012-2016, patients who underwent two-stage tendon reconstruction due to flexor digitorum profundus (FDP) sectioning or tearing in zone II with destruction of flexor pulleys and extensive scarring in the flexor tendon bed were included in the study. RESULTS: Ten patients included to study with a mean follow-up of 34 months (range 12-70 months) and the results were assessed by clinical examination and questionnaire. According to the Strickland score, one (20%) of the results were excellent, five (50%) were good, two (20%) were fair and two (20%) were poor. After the second stage, good to excellent results were achieved in 60% of patients, one patient needed graft tenolysis. These results were similar to the subjective scores given by the patients, four of whom complained of functional problems in daily life at follow-up. There was no complication after the first stage. But after the second stage, there was one bowstringing and one adhesion that require tenolysis. CONCLUSIONS: Hunter technique is still the reference procedure for the reconstruction of flexor tendons. The results of our study showed that two-stage tendon reconstruction which is applied in patients with tendon sheath disruption as a result of acute or delayed tendon injuries which are not possible for primary repair is reliable and satisfactory.

Simultaneous Damage of the Cingulate Cortex Zone II and Fronto-Striatal Circuit Causes Prolonged Selective Attentional Deficits.

Selective attention is essential for successful cognitive performance. Although several brain areas are known to be involved in selective attention, damage to some of these areas does not necessarily cause attentional deficits. In the current study, we hypothesized that damage to specific parts of the right cerebral hemisphere, especially the cingulate cortex (CC), causes prolonged selective attentional deficits, and examined the influence of focal brain damage on selective attention. We recruited 36 patients with right cerebral hemispheric WHO grade 2 and 3 brain tumors who underwent surgery. We assessed selective attention over time from pre-operation to 3 months postoperatively using the cancelation test and color Stroop test, and calculated the percentage of deficit. Additionally, two types of imaging analyses were performed: voxel-based lesion symptom mapping (VLSM) and multiple logistic regression analysis, to reveal related brain regions for selective attention. Consequently, we found that the CC and deep part of the middle frontal gyrus were associated with deficits in selective attention via VLSM. Using multiple logistic regression analysis, the CC zone II at the cortical level (p < 0.0001) and the fronto-striatal tract (FST) at the subcortical level (p = 0.0079) were associated with attentional deficit among several regions identified in the VLSM. At 3 months postoperatively, selective attention was impaired in patients who underwent resection of these regions. Moreover, only patients with simultaneous damage of the CC zone II and FST had prolonged attentional deficits until the chronic phase. Our results suggest that the right CC zone II and FST are critical areas for the selective attentional networks.

Two-Stage Flexor Tendon Reconstruction in Zone II Using Paediatric Silicon Catheter at Mayo Hospital Lahore: A Case Series.

The aim of the study was to assess the functional outcomes after two stage flexor tendon reconstruction in zone II tendon injury of the hand using paediatric silicon catheter. A prospective case series of total 22 digits of 21 patients having Boyes grades I, II and III neglected flexor tendon injury, for a mean time of 10 months since injury were included. Two stage reconstructive procedure was performed. A final follow-up was done at one year to assess the functional outcome using Buck-Gramcko scale. Out of 22 digits, there were 06 (27.27%) Boyes grades I digits, 11 (50%) grades II and 5 (22.72%) grades III. At final follow-up thirteen (59.09%) digits had excellent, five (22.72%) had good while three (13.63%) had satisfactory result and one (4.54%) had poor result. We concluded that two stage flexor tendon reconstruction using silicon catheter yields good results and is cost effective.

Thoracic branched endograft for traumatic aortic pseudoaneurysm.

Thoracic endovascular aortic repair is the standard treatment for blunt traumatic aortic injuries (BTAI). Approximately 40% of patients with BTAI require left subclavian artery (LSA) coverage for adequate proximal seal. Intentional LSA coverage is not benign; it is associated with complications including stroke, spinal cord ischemia, vertebrobasilar, and left arm ischemia. To avoid these devastating complications, LSA revascularization is recommended before elective zone II thoracic endovascular aortic repair, but is often omitted during emergent cases. We report two cases of aortic zone II traumatic grade III BTAI (aortic pseudoaneurysm) that we successfully treated with the GORE prior to TAG thoracic branch endoprosthesis.

Comparison of surgical trends in zone 2 flexor tendon repair between Turkish and international surgeons.

OBJECTIVES: The aim of this study was to evaluate Turkish trends in zone 2 flexor repair with regards to surgical technique, suture materials, anesthesia and post-operative rehabilitation and compare this with international surgeons by modifying Gibson's survey. METHODS: A printed and online survey consisting of 19 questions modified from Gibson's survey was sent to 590 Turkish and international surgeons. The surgeon's years in practice, province of practice, residency type, number of zone 2 flexor tendon repairs done in a year, preferred surgical technique, suture material, complications and postoperative protocols were asked to the respondents. RESULTS: A total of 194 surgeons completed the survey (a 25% response rate). Of those who completed the survey, 91 were international (mostly from far eastern countries) and 103 were Turkish surgeons. Years in practice and educational background had influence on the decision-making. There were differences between the Turkish and international surgeons in the core and epitendinous suture thickness preference and flexor tendon sheath repair. There was a statistically significant relationship between the province of practice and the use of WALANT (Wide awake local anesthesia no tourniquet) (p < 0.05). While the majority of respondents who preferred postoperative early passive motion protocol were from Turkey (61.5%), the majority of respondents who preferred early active motion protocol were practicing abroad (73.9%). CONCLUSION: Despite some variations the surgeons involved in this study follow to a large extent the current literature.

Zone II Flexor Tendon Repair by Modified Brunelli Pullout Technique and Very Early Active Mobilization.

Numerous surgical methods and hand therapy protocols have been described in attempts to improve the functional outcome after flexor tendons repair in zone II. It is generally accepted that the best functional results can be obtained by combining a surgical technique, which provides enough strength of the repair, with very early postoperative mobilization. One of the methods to achieve these goals seems to be the Brunelli pullout technique, which moves the tension from the suture level to the finger pulp. We describe here our modifications to the original Brunelli technique, which, by moving the tension from the suture level and by diminishing the gap, allows immediate postoperative mobilization.

Comparison of intravitreal bevacizumab injection and laser photocoagulation for type 1 zone II retinopathy of prematurity.

PURPOSE: To compare the efficacy of intravitreal bevacizumab (IVB) injection with conventional laser photocoagulation in eyes with type 1 zone II retinopathy of prematurity (ROP). METHODS: Preterm infants with type 1 ROP in zone II (stage 2 or 3 ROP with plus disease) were randomly assigned to intravitreal injection of 0.625 mg/0.025 ml bevacizumab (Group 1) or laser photocoagulation (Group 2). Patients were followed weekly for 4 weeks and then biweekly till 90 weeks gestational age. Also, spherical and cylindrical refractive errors were compared at 90 weeks postmenstrual age (PMA). RESULTS: A total of 116 preterm infants (232 eyes) were treated and completed the follow-up period. IVB injection was done in 154 eyes (77 cases), and laser photocoagulation was done in 78 eyes (39 cases). ROP regressed after single IVB injection in 149 eyes (96.8%) and in 5 eyes (3.2%) after the second injection. Cataract developed in one eye (0.63%) after IVB injection. ROP regressed in 94.7% of treated eyes (76 eyes) in the laser photocoagulation group; however, retinal fold and traction developed in 2 eyes. Spherical and also cylindrical refractive errors had no significant difference. CONCLUSIONS: Both IVB injection and laser photocoagulation are effective methods for the treatment of type 1 zone II ROP. However, re-treatment requirement may be higher in the IVB injection group. IVB re-injection is an effective option for re-treatment in persistent cases.

Sacroiliac screw versus a minimally invasive adjustable plate for Zone II sacral fractures: a retrospective study.

OBJECTIVE: Fracture line of the sacrum always involves the Zone II region because sacral foramina are anatomically and physiologically weak regions of the sacrum. The purpose of this study is to compare the therapeutic effects of a sacroiliac screw and a minimally invasive adjustable plate (MIAP) for Zone II sacral fractures. METHODS: Patients with unilateral Zone II sacral fractures fixed with a unilateral sacroiliac screw or MIAP from August 2009 to January 2016 were recruited into this study and were divided into two groups: group A (sacroiliac screw) and group B (MIAP). Surgical time, blood loss, frequency of intraoperative fluoroscopy, and relative complications were reviewed. Radiographs and CT scans were routinely acquired to evaluate the fracture displacement and reduction quality. Fracture healing was evaluated in the radiographs at each follow-up. Functional outcome was assessed based upon the Majeed scoring system at the final follow-up. RESULTS: Thirty-one patients in group A and thirty-nine patients in group B were included in this study. No significant differences in average surgical time (P = 0.221) or blood loss (P = 0.234) were noted between group A and group B. The mean frequency of intraoperative fluoroscopy was 15.74±2.98 in group A and 6.08±1.94 in group B (P = 0.000). All fractures healed well within four months in all patients, and the healing time exhibited no significant difference between the two groups (P = 0.579). Satisfactory rates of reduction quality and functional outcome were not statistically different between the two groups (P > 0.05). The complication rate was 16.13% (5/31) in group A and 5.13% (2/39) in group B (P = 0.222). CONCLUSION: MIAP has a fixation effect and exhibits reduction potential for Zone II sacral fractures. Favourable radiographic and functional results could be obtained through the MIAP technique, which is easy to conduct without pre-contouring. Compared with the unilateral S1 sacroiliac screw technique, repeated projections and iatrogenic sacral injury can be avoided.