Open reduction and internal fixation of Mason type III radial head fractures with and without an associated elbow dislocation

PURPOSE: The purpose of this study was to evaluate the treatment of patients with Mason type III radial head fracture with and without elbow dislocation by open reduction with internal fixation, collateral ligament repair, and early mobilization. An additional purpose was to investigate whether there is any effect of elbow dislocation on the severity and functional outcome. METHODS: Twenty-five patients were treated with open reduction with internal fixation using low-profile miniplate and screws for comminuted fracture of the radial head. Eighteen fractures were Mason type III, and 7 fractures were Mason type III with elbow dislocation. There were 5 women and 20 men with a mean age of 34 years. The mean follow-up time was 27 months. Patients were reviewed for functional ability, physical examination, and radiographic assessment. RESULTS: The mean functional index in Mason type III fracture and Mason type III fracture with elbow dislocation was 87 for both groups. The mean range of motion at the elbow joint was calculated as 5 degrees extension to 136 degrees flexion for Mason type III and 7 degrees extension to 133 degrees flexion for Mason type III with elbow dislocation. The mean pronation and supination for all patients were 74 degrees and 67 degrees , respectively. CONCLUSIONS: Selected Mason III radial head fractures and fracture dislocations could be stabilized satisfactorily with internal fixation. Meticulous surgical technique, combined with rigid internal fixation, can allow early motion of the forearm and elbow after fixation of Mason type III radial head fractures with and without elbow dislocation and ligamentous injury. We believe there is still a role for prosthetic replacement in comminuted Mason III radial head fractures that cannot reliably be treated with open reduction and internal fixation. TYPE OF STUDY/LEVEL OF EVIDENCE: Prognostic II.     

解剖形锁定钛板内固定治疗 MasonⅡ型和Ⅲ型桡骨头骨折简

目的分析解剖形锁定钛板内固定治疗MasonⅡ、Ⅲ型桡骨头骨折的疗效。方法对自2008—01—2011—12收治的28例MaSOnⅡ、Ⅲ型桡骨头骨折,采用切开复位解剖形锁定钛板内固定术进行治疗,术中有4例行同种异体骨植骨,8例行内侧副韧带修复。结果28例均获得随访,按照Broberg和Money的肘关节功能评分标准进行评分,评分为平均86分（46．100分）;肘关节屈曲平均118°（95～135°）,伸直平均20°（0-30°）,旋前平均52°（15～60°）,旋后平均58°（20—70°）;本组：优15例,良10例,中3例,优良率89．3％。所有患者肘关节功能恢复良好,仅1例遗留肘部轻度疼痛,2例肘、腕部轻度无力。结论采用切开复位解剖锁定钛板内固定术治疗MasonⅡ、Ⅲ型桡骨头骨折临床疗效满意,内固定牢固,可早期对I能宅目争楼．     

切开复位Herbert钉内固定术治疗MasonⅢ型桡骨小头骨折

目的总结Herhert钉治疗MasonⅢ型桡骨小头骨折的临床疗效。方法 22例MasonⅢ型桡骨小头骨折患者,采用切开复位Herbert内固定,对其中18例随访资料完整的病例进行回顾性分析。结果随访18例,平均21（12～36）个月。所有骨折愈合良好,平均愈合时间6（4～10）个月,未发生肘关节不稳或功能减弱。平均Mayo肘关节性能指标评定分数为88.6±11.4,临床疗效满意：优12例,良6例。肘关节平均屈伸范围7°～135°,旋前平均80°（73°～87°）和旋后平均72°（66°～78°）。结论 Herbert钉对于选择性的治疗MasonⅢ型桡骨小头骨折能够获得满意的临床效果,固定牢固可靠,可早期功能锻炼。     

Mason type II radial head fractures: operative versus nonoperative treatment.

The most appropriate treatment of Mason type II radial head fractures remains controversial. Recommended treatment has included closed reduction and immobilization, resection, or open reduction and internal fixation. The cases of 29 Mason type II radial head fractures treated at Naval Hospital Oakland from 1983 to 1989 were identified. Twenty-six or 90% were available for detailed follow-up. All cases underwent standardized elbow evaluations and results were compared using an elbow score based on a 100-point scale. The parameters evaluated were pain, motion, elbow and grip strength, and function in activities of daily living. In addition, injury and follow-up radiographs were analyzed. Mean follow-up was 18 months. There were 10 cases treated by open reduction and internal fixation and 16 cases treated by closed means. At final follow-up, the operatively treated group had a mean elbow score of 92 and 90% good/excellent results. The nonoperatively treated group had a mean elbow score of 77 and 44% good/excellent results. This difference was statistically significant (p less than 0.01). Radiographic analysis revealed a higher incidence of articular depression, displacement, and joint narrowing in the nonoperatively treated group. We conclude that displaced radial head fractures treated nonoperatively have a higher incidence of pain, functional limitations, loss of strength, and radiographic evidence of arthritis when compared to those treated by open reduction and internal fixation.     

Bold螺钉治疗MasonⅡ型桡骨小头骨折

目的探讨Bold螺钉内固定治疗Mason型桡骨小头骨折的临床疗效。方法自2006年5月至2009年6月,采用Bold螺钉内固定治疗Mason型桡骨小头骨折13例,男8例,女5例,年龄19～56岁,平均37.3岁。术后2d进行功能锻炼。术后定期X线复查,采用Broberg和Morrey肘关节功能评分标准评判疗效。结果所有患者均获得6～14个月随访,平均10个月。肘关节功能评分平均97分,优9例,良3例,差1例,优良率为92.3%。结论 Bold螺钉内固定治疗Mason型桡骨小头骨折,能精确重建关节面,早期功能锻炼,有助于恢复良好的肘关节功能,是一种治疗桡骨小头骨折的理想方法。     

Treatment of displaced radial head fractures by internal fixation with absorbable pins

Objective: To study the effect of internal fixation with absorbable pins on treatment of displaced radial head fractures. Methods: From May 1999 to May 2004, 16 patients with displaced radial head fractures (Mason typesⅡandⅢ) were treated with internal fixation by absorbable pins. The duration of follow-up averaged 22.6 months (12-58 months). The outcome was assessed on the basis of elbow motion, radiographic findings and the functional rating score delineated by Broberg and Morrey. Results:All fractures healed within 10 months without avascular necrosis of radial head. The mean elbow flexion loss was 15°(0°-35°), and pronation and supination decreased by 10°(0°-30°) on average compared with those of the contralateral elbow. Five patients had an excellent result, 6 a good result, and 3 a fair result according to the criteria of Borberg and Morrey. Conclusions: Internal fixation with absorbable pins is an effective method in treating displaced radial head fractures. It can maintain the biomechanical stability of forearm, improve the elbow function and avoid second operation.     

What happens to the elbow joint after fractured radial head excision? Clinical and radiographic study at a mean 15-yearfollow-up

Comminuted fractures of the radial head can be treated by radial head excision, open reduction and internal fixation, or radial head replacement. The aim of this study was to evaluate the long-term clinical and radiographic results of 22 patients with an isolated Mason type III fracture of the radial head treated by radial head excision. Mean age at the time of surgery was 36 years and average follow-up was 15 years. Overall outcome at the last follow-up was scored as excellent, good, fair or poor, considering elbow and wrist pain, valgus deformity, elbow and forearm range of motion, and elbow radiographic osteoarthritic changes. At follow-up mean pain score on VAS was was 1, average increase in elbow valgus deformity was 8°, mean flexion of the elbow was 138°, pronation of the forearm averaged 78°, and supination averaged 85°. Degenerative changes were scored as grade 0 in 4 patients, grade 1 in 14 patients, and grade 2 in 4 patients. The overall outcome was excellent in 18 patients and good in 4 patients. When a comminuted radial head fracture is not associated with elbow dislocation or ligamentous injuries, resection of the radial head is a valid surgical option because it is a simple and rapid technique, it has a low learning curve, and it has a high rate of excellent clinical and radiographic long-term results.     

内固定术治疗Mason Ⅱ-Ⅳ型桡骨头骨折疗效分析

目的探讨内固定术治疗MasonⅡ-Ⅳ型桡骨头骨折的临床疗效。方法 2002年3月～2012年6月采用内固定术治疗桡骨头骨折患者41例,其中MasonⅡ型18例,Ⅲ型17例,Ⅳ型6例;开放性骨折Gustilo分型Ⅱ和ⅢA各1例。合并他处多发性骨折9例。伤后至手术时间平均6.7 d(3 h～30 d)。采用克氏针固定8例,螺钉固定11例,微型钢板固定15例,可吸收螺钉固定7例。结果本组41例均获随访,平均时间10(4～28)个月;骨折均愈合。按照Broberg和Morrey肘部评分标准判定疗效:优22例,良12例,可4例,差3例,优良率为82.9%(34/41)。2例儿童患者发生克氏针滑脱至皮下,骨折愈合后立即取出克氏针。结论内固定术能够改善MasonⅡ-Ⅳ型桡骨头骨折患者的肘关节功能;骨折端解剖复位、牢固内固定效果、良好修复关节的稳定性、早期功能锻炼能使患者获得良好的疗效。     

关节镜下埋头空心钉内固定治疗Mason Ⅱ型桡骨头骨折的疗效观察

目的探讨关节镜下埋头空心钉内固定治疗MasonⅡ型桡骨头骨折的手术方法和临床疗效。方法回顾性分析自2012-03—2016-02采用肘关节镜辅助下埋头空心钉内固定治疗的24例MasonⅡ型桡骨头骨折。末次随访时进行肘关节功能MEPS评分,测量并比较双侧肘关节屈伸和旋转活动度。结果 24例术后切口均一期愈合,术后平均随访13.2(9~18)个月。术后骨折均愈合,愈合时间3~4个月,平均3.2个月。所有患者均无骨折畸形愈合、空心钉退出、空心钉断裂、神经损伤等并发症。末次随访时肘关节功能MEPS评分平均97.3分,其中优21例,良3例,优良率100%。末次随访时双侧肘关节屈伸和旋转活动度差异无统计学意义(P0.05)。结论关节镜下埋头空心钉内固定治疗MasonⅡ型桡骨头骨折具有创伤小、固定满意、术后恢复快、并发症少等优点,有利于肘关节功能恢复,临床疗效满意。     

可吸收自身增强软骨钉治疗桡骨小头骨折

 目的 评估可吸收自身增强软骨钉治疗桡骨小头骨折的临床疗效。方法 回顾性分析2008年1月至2011年12月采用切开复位、可吸收自身增强软骨钉固定治疗22例桡骨小头骨折患者资料,其中18例资料完整,男10例,女8例;年龄13~55岁,平均36.8岁;左侧10例,右侧8例。按Mason分型：Ⅱ型14例,Ⅲ型3例,Ⅳ型1例;其中2例合并桡骨颈骨折,9例合并肱骨小头软骨骨折,1例合并肘关节后脱位伴尺骨鹰嘴撕脱性骨折。术中对桡骨小头骨折复位后先以克氏针临时固定,再用直径为1.5 mm、长度为16~24 mm可吸收自身增强软骨钉固定,螺钉不穿过对侧骨皮质,螺钉头埋入软骨下;对同时存在的颈部骨折,先复位桡骨小头,以软骨钉固定,再复位颈部,用微型“T”形钢板或解剖型钢板固定。对合并肱骨小头骨软骨骨折,其中4例给予软骨片复位、可吸收缝线经肱骨外上髁固定,5例因骨软骨片较小无法固定而去除。结果 18例患者均获得随访,随访时间6~54个月,平均31.3个月;骨折均顺利愈合,愈合时间5~12周,平均8.7周。随访时无一例出现内固定失败、血肿、积液、窦道形成、桡骨小头溶骨性变化等并发症。Broberg-Morrey评分为68~100分,其中优13例,良4例,可1例,优良率为94.44％(17/18)。术后肘关节屈伸活动度为90°~150°,平均123.8°;前臂旋转活动度为130°～180°,平均152.5°。结论 可吸收自身增强软骨钉可治疗各种类型桡骨小头骨折,术后疗效满意。     

Die Behandlung von Radiusköpfchenfrakturen Typ Mason II durch perkutane Drahtreposition

Background

The therapeutic algorithm for the treatment of Mason type II radial head fractures is still controversially discussed. This study describes the technique of percutaneous fracture reduction without additional internal fixation of the radial head as an alternative to open reduction and presents the results of the method.

Material and methods

The data from 26 out of 30 patients with a Mason type II radial head fracture who had been consecutively treated with percutaneous fracture reduction were evaluated retrospectively. The analysis comprised the disabilities of shoulder and hand (DASH) score, the Mayo elbow performance score (MEPS) and data from the radiological examinations.

Results

The average follow-up time was 21 months (range 6-47 months). In 22 cases (85 %) an anatomical reduction could be achieved, 2 cases (8 %) showed a complete redislocation of the fragment and 2 cases (8 %) a partial redislocation. The average DASH score was 5.6 points (range 0–56) and the average MEPS was 93.8 (range 60–100). Only 4 patients (15 %) reported persisting functional impairment with a DASH score >10.

Conclusions

The method of percutaneous reduction of radial head fractures without additional internal fixation in Mason type II fractures has been demonstrated to be a good alternative to open reduction.     

Outcome after open reduction and angular stable internal fixation for supra-intercondylar fractures of the distal humerus: preliminary results with the LCP distal humerus system

INTRODUCTION: Fractures of the distal humerus are complex injuries that can be effectively treated with open reduction and internal fixation (ORIF). The new LCP distal humerus system allows angular stable fixation of these complex fractures with anatomically preshaped plates. The aim of the study was to evaluate operative reposition, fracture healing, and pain, function and patient satisfaction after open reduction with an angular stable fixation. METHODS: Fourteen patients with a mean age of 55.2 years (21-83) were treated with open reduction and angular stable internal fixation. Two patients were lost to follow up (1 died, one refused to be reevaluated). AO classification showed 12 C-fractures (1 x C 1.1; 1 x C 1.3; 4 x C 2.2; 4 x C 3.2; 2 x C 3.3) and 2 B-fracture (B 2.3 and B 3.3). 5 fractures were open fractures (4 x II degrees , 1 x I degrees ). The clinical and radiographic follow up (Mayo elbow performance score (MEPS), Dash Score, elbow anterior-posterior and lateral view X-rays, and flexion and extension force as % of contralateral side at 90 degrees flexion) were performed postoperatively. Mean follow up was 10 months. RESULTS: Radiographically, complete union was achieved in all patients. There were no cases of primary malposition or secondary dislocation. Complications were: (1) delayed union after olecranon osteotomy, (2) transient ulnar nerve irritation. Clinical MEPS results were good to excellent with a mean of 91 +/- 11.7 points. The mean DASH Score was 18.5 +/- 11.5 points. Mean flexion was 121 +/- 20.9, mean extension deficit was 17.9 degrees +/- 10.3. Mean flexion force was 75.3% +/- 26.7 and mean extension force was 70.7 % +/- 24.9. CONCLUSION: Treatment of supra-intercondylar fractures of the distal humerus is challenging. Anatomically preshaped angular stable implants facilitate operative reduction and stabilization of the fracture and may allow early postoperative rehabilitation. Clinical and radiological results are promising, with good range of motion and flexion and extension force.     

Newly defined fracture pattern specific to Mason III radial head fractures: fracture description, management and outcomes using screw fixation

Background: Radial head fractures are the most common type of elbow fracture and are universally classified under the Mason classification system. Mason type III fractures are comminuted and are the most difficult to treat, generally requiring plating if possible, or more commonly arthroplasty or excision, which gives a variable outcome. We hypothesized that a new and specific fracture pattern of the radial head (Mason III) can be treated successfully with screw fixation. Methods: Six patients presented to the senior surgeon's clinic with this unusual Mason III fracture pattern. In these patients, the fracture was acute, requiring an open reduction and internal fixation with the use of three headless compression screws. Average follow‐up time was 21 months. Using serial X‐rays and the Broberg–Morrey elbow score, the six acute fractures were evaluated radiologically and functionally. Results: All six patients had good to excellent results using the Broberg–Morrey scoring system. All patients showed radiological and clinical union within 3 months of injury. No patient required revision surgery or excision at a later date. Discussion: We have recognized a specific type of comminuted and displaced Mason III radial head fracture that has not previously been described in the literature. This type of fracture is amenable to open reduction internal fixation with buried compression screws giving a good to excellent outcome, while avoiding the common consequences seen with a radial head excision, arthroplasty or plate fixation.     

微型钛板内固定治疗复杂桡骨头骨折

目的探讨运用微型钛板治疗复杂桡骨头骨折的可行性及疗效。方法 21例复杂桡骨头骨折患者,采用手术切开复位、微型钛板内固定的方法治疗,其中MasonⅡ型14例,Ⅲ型7例。均采用肘关节后外侧切口,骨折复位后克氏针辅助固定,再行指骨钛板螺钉固定,确认关节面平整,关节旋转及伸屈运动无阻碍。术后予石膏外固定2～4周,石膏拆除后开始渐进的功能锻炼。结果本组手术时间50～80 min,平均（65±15）min。均获随访,平均随访时间14.5（5～24）个月,术后3～5个月骨折均获骨性愈合,肘关节屈平均115°（110°～125°）,伸平均5°（0°～10°）,旋前平均55°（50°～60°）,旋后平均50°（40°～60°）。1例遗留轻度肘关节疼痛;无肘关节外翻不稳定及创伤性关节炎发生。根据Broberg和Morrey评分评价肘关节功能：优8例,良10例,可3例,优良率85.7%。结论运用微型钛板固定桡骨头骨折安全可行,能更好地恢复桡骨头关节面的解剖结构,并有效固定,为早期肘关节功能锻炼提供了稳定性,有利于肘关节功能的恢复。     

手术治疗桡骨头前侧塌陷骨折

目的：探讨手术治疗桡骨头前侧塌陷骨折的临床疗效.方法：2006年3月至2013年1月收治17例桡骨头前侧塌陷骨折的患者,根据Mason分型,Ⅱ型12例,Ⅲ型5例.采用肘关节后外侧入路进行切开复位,并用Herbert钉或钛空心钉进行内固定.结果：术后均获随访,时间6～18个月,平均11.3个月.根据Broberg和Money肘关节功能评分标准评定：优2例,良12例,可3例.术后未发生肘部感染、神经损伤、骨不连、创伤性关节炎、异位骨化以及肘关节不稳定.但术后患侧肘关节活动范围小于健侧.结论：桡骨头前侧塌陷骨折容易漏诊,可以通过肘关节后外侧入路进行切开复位内固定.     

Open reduction and internal fixation of comminuted fractures of the radial head using low-profile mini-plates

Between 1996 and 2000, we treated ten patients with severely comminuted fractures of the radial head using low-profile mini-plates. Their mean age was 42 years (24 to 71). Three fractures were Mason type III and seven were Mason-Johnston type IV. At a mean follow-up of 28.5 months (15 to 44), all fractures had united. The plates were removed in nine patients. No patient had difficulty with daily activities or symptoms of instability of the elbow. The mean range of flexion of the elbow was from 7 degrees to 135 degrees, with 74 degrees of supination and 85 degrees of pronation. According to the Broberg and Morrey functional elbow index, the mean score was 90.7 points (73 to 100), and the outcome was excellent in three patients, good in six and fair in one. These results compare favourably with those reported previously. The technique is applicable to severely comminuted fractures of the radial head which otherwise would require excision.     

Comminuted fractures of the radial head. Comparison of resection and internal fixation

BACKGROUND: Satisfactory internal fixation of comminuted radial head fractures is often difficult to achieve, and radial head resection has been the accepted treatment. In this study, we compared the results of radial head resection with those of open reduction and internal fixation in patients with a comminuted radial head fracture. METHODS: Twenty-eight patients with a Mason type-III radial head fracture (some with associated injuries) were enrolled in the study. Fifteen patients underwent radial head resection as the initial treatment (Group I), and thirteen patients underwent open reduction and internal fixation (Group II). The age at the operation averaged 41.1 and 38.2 years, respectively, and the duration of follow-up averaged ten and three years, respectively. The outcomes were assessed on the basis of pain, motion, radiographic findings, and strength measured with Cybex testing. The overall outcome was rated with the functional rating score described by Broberg and Morrey and with the American Shoulder and Elbow Surgeons Elbow Assessment Form. RESULTS: Elbow motion averaged 15.5 degrees (extension loss) to 131.4 degrees (flexion) in Group I and 7.1 degrees to 133.8 degrees in Group II. The carrying angle and ulnar variance averaged 8.2 degrees and 1.9 mm in Group I and 1.5 degrees and 0.5 mm in Group II. Compared with Group II, Group I had a loss of strength in extension, pronation, and supination (p < 0.01). The Broberg and Morrey functional rating score averaged 81.4 points in Group I and 90.7 points in Group II (p = 0.0034). The score on the American Shoulder and Elbow Surgeons Elbow Assessment Form averaged 87.3 points in Group I and 94.6 points in Group II (p = 0.0031). CONCLUSIONS: The patients in whom the comminuted radial head fracture was treated with open reduction and internal fixation had satisfactory joint motion, with greater strength and better function than the patients who had undergone radial head resection. These results support a recommendation for open reduction and internal fixation in the treatment of this fracture.     

不同内固定方法治疗Mason Ⅱ型桡骨头骨折临床效果的对比研究

[目的] 比较研究Herbert钉、微型空心松质骨螺钉、微型皮质骨螺钉以及克氏针内固定治疗Mason Ⅱ型桡骨头骨折的临床效果.[方法] 1999年1月-2005年7月共收治34例Mason Ⅱ型桡骨头骨折,7例行Herbert钉内固定术(1组),10例行微型空心松质骨螺钉内固定术(2组),9例行微型皮质骨螺钉内固定术(3组), 8例行克氏针内固定术(4组).通过随访对4组患者肘关节的疼痛、功能评分以及运动、肌力、X线表现进行比较研究.[结果] 术后随访2～6年,平均4.5年,4组平均肘关节痛觉满意视觉模拟评分(VAS评分)分别为 24.2、23.7、21.5和19.7分(P< 0.01),平均Broderg和Morrey肘关节功能评分分别为93.3、94.1、91.4和86.3分(P< 0.01);4组患者肘关节伸、屈以及前臂旋前活动度差异有统计学意义(P< 0.01),但伸肘、屈肘肌力以及旋前和旋后肌力差异无显著性(P> 0.01),均正常.[结论] 与克氏针内固定相比,切开复位Herbert钉、微型空心松质骨螺钉以及微型皮质骨螺钉内固定治疗Mason Ⅱ型桡骨头骨折可获得较满意的关节活动范围以及较好的关节功能恢复.     

Reconstruction of Mason type-III and type-IV radial head fractures with a new fixation device: 23 patients followed 1-4 years

BACKGROUND: Treatment options in radial head fractures of Mason types III and IV range from open reduction and internal fixation (ORIF) to radial head resection with or without prosthetic replacement. PATIENTS: In a prospective study, the radiographic and clinical outcome was evaluated in 23 patients (age median 51 years) with 23 complex radial head fractures median 2 (1-4) years after ORIF using a new fixation device (FFS; Orthofix). 14 Mason type-III fractures with 2 concomitant olecranon fractures and 1 ulnar nerve lesion, and 11 type-IV fractures with 2 olecranon fractures and 2 fractures of the coronoid process were treated. 2 patients were lost to follow-up. In 7 cases of joint instability, an elbow fixator with motion capacity was applied after ORIF of the radial head. RESULTS: No radial head resection was necessary. No secondary dislocations or nonunion occurred. The Morrey elbow score was excellent in 8 and good in 4 Mason type-III fractures and excellent in 5, good in 3, and fair in 3 Mason type-IV fractures. INTERPRETATION: Reconstruction of comminuted radial head fractures can be performed with this device and radial head resection can be avoided.     

Herbert螺钉内固定治疗桡骨小头骨折15例

目的：观察随访用Herbert螺钉内固定治疗MasonⅡ、Ⅲ型桡骨小头骨折的临床近期疗效。方法：2008年3月至2010年7月,采用切开复位Herbert螺钉内固定治疗15例MasonⅡ、Ⅲ型桡骨小头骨折,男6例,女9例;年龄18～55岁,平均32岁;左侧7例,右侧8例。受伤到入院时间3～10h。患者入院时肘部肿胀疼痛,肘关节活动受限,肘关节可闻骨擦音,X线片示桡骨小头骨折。对患者术后肘关节功能恢复观察采用Mayo肘部评分系统。结果：术后患者伤口愈合Ⅰ/甲,术后未见肘关节骨化性肌炎,随访6～15个月,依据Mayo肘部评分,优8例,良5例,可2例。Mayo评分（86.67±1.26）分,其中疼痛（53.33±9.76）分,关节活动度（27.33±4.58）分,关节稳定性（6.00±2.07）分;肘关节活动度70°～130°,平均（105±10）°,前臂旋转度100°～130°,平均（120±16）°。结论：用Herbert螺钉对MasonⅡ型及部分MasonⅢ型桡骨小头骨折固定,复位满意、固定可靠、方法简单,利于早期进行功能锻炼。