Home About us Editorial board Ahead of print Current issue Search Archives Submit article Instructions Subscribe Contacts Login 
  • Users Online: 3438
  • Home
  • Print this page
  • Email this page

   Table of Contents      
ORIGINAL ARTICLE
Year : 2014  |  Volume : 62  |  Issue : 2  |  Page : 176-179

Modified silicone sling assisted temporalis muscle transfer in the management of lagophthalmos


Department of Ophthalmology, Lala Lajpat Rai Hospital, Ganesh Shankar Vidyarthi Memorial Medical College, Kanpur, Uttar Pradesh, India

Date of Submission03-May-2013
Date of Acceptance30-Sep-2013
Date of Web Publication11-Mar-2014

Correspondence Address:
Ramesh C Gupta
Department of Ophthalmology, Lala Lajpat Rai Hospital, Ganesh Shankar Vidyarthi Memorial Medical College, Kanpur, Uttar Pradesh
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0301-4738.128629

Rights and Permissions
  Abstract 

Aim : To evaluate the efficacy of modified temporalis muscle transfer (TMT) by silicone sling for the management of paralytic lagophthalmos. Settings and Design: Prospective interventional study. Materials and Methods : Ten patients of lagophthalmos due to facial palsy underwent modified TMT using silicone sling. The patients were followed-up for a period of 3 months. Palpebral aperture in primary gaze and during eye closure were assessed both pre- and postoperatively along with problems associated with lagophthalmos like exposure keratopathy and lacrimation. Statistical Analysis : Paired t-test was applied to measure the statistical outcome. Results : Eight patients achieved full correction of lagophthalmos with no lid gap on closing the eye. The mean (standard deviation (SD)) lid gap on eye closure was 7.7 (0.86) mm preoperatively, 0.5 (0.47) mm at 1 st postoperative day, and 0.7 (0.75) mm at 3 rd month. There was a reduction in mean lid gap on eye closure of 7 mm at 3 months (P < 0.0001) which is highly significant. The mean (SD) vertical interpalpebral distance during primary gaze was 12.05 (1.12) mm preoperatively, 10 (0.94) mm at 1 st postoperative day, and 10.35 (1.08) mm at 3 rd month. There was a reduction in mean vertical inter palpebral distance of 1.7 mm at 3 months (P = 0.001) which is significant. Exposure keratitis decreased in five out of six patients at 3 months. Conclusion : Modified TMT by silicone sling is a useful procedure with lesser morbidity and good outcomes for the treatment of paralytic lagophthalmos due to long standing facial palsy.

Keywords: Lagophthalmos, silicone sling, temporalis muscle


How to cite this article:
Gupta RC, Kushwaha RN, Budhiraja I, Gupta P, Singh P. Modified silicone sling assisted temporalis muscle transfer in the management of lagophthalmos. Indian J Ophthalmol 2014;62:176-9

How to cite this URL:
Gupta RC, Kushwaha RN, Budhiraja I, Gupta P, Singh P. Modified silicone sling assisted temporalis muscle transfer in the management of lagophthalmos. Indian J Ophthalmol [serial online] 2014 [cited 2020 Feb 24];62:176-9. Available from: http://www.ijo.in/text.asp?2014/62/2/176/128629

Patients with facial nerve palsy have a characteristic facial asymmetry and drooping of the angle of mouth. The temporal and zygomatic branches of facial nerve supply the forehead and eyelid muscles. Their involvement in a disease leads to paralysis of orbicularis oculi muscle resulting in lagophthalmos and ectropion. This can lead to dry eye, infection, corneal ulceration, perforation, and even blindness. Preinjury factors that lead to increased risk of complications are the lack of a good Bell's phenomenon, corneal anesthesia, and dry eye.

The facial nerve is susceptible to a variety of injuries and diseases. [1],[2] The important causes of facial nerve palsy are congenital, idiophatic like Bell's palsy, infections like leprosy, Ramsay Hunt syndrome, neoplasms, trauma, and other diseases like multiple sclerosis, myasthenia gravis, sarcoidosis, etc.

These ocular complications can be devastating both cosmetically and functionally. The facial nerve once damaged, rarely attains full recovery of function. The ability to restore symmetry and function of eyelids in a patient afflicted with facial nerve palsy is one of the most rewarding skills of a well-trained oculoplastic surgeon.

Various surgical modalities have been developed to treat paralytic lagophthalmos and are classified into static and dynamic procedures. Static procedures include; lateral tarsorrhaphy, lid loading, and palpebral spring; while, dynamic include temporalis muscle transfer (TMT) and free muscle transfer. [3],[4] The objective of dynamic procedures is to transfer a functioning motor unit to move the paralyzed eyelids.

The temporalis muscle is used in dynamic procedures as it is spared in a case of facial palsy. TMT was first described by Sir Harold Gillies (1934), who detached the origin of muscle and turned it down across the zygomatic arch. [5] This classic transfer was modified by Anderson who turned down the overlying deep temporal fascia to lengthen the transfer. [6] However, this transfer requires extensive dissection of muscle itself resulting in hollowing of temporal fossa with a bulge in area of zygomatic arch. McLaughlin (1953) mobilized the insertion of the muscle, rather than its origin, by coronoidectomy via an intraoral approach. [7] Breidahl et al., (1996) described a technique for the lower half of face in which temporalis was excised just before its insertion into the coronoid, thus avoiding coronoidectomy and lengthened the muscle using fascia lata. [8]

The problem faced with the procedures using fascia lata was attributed to difficulty in its harvesting. In this paper we present our experiences using improved techniques of TMT using silicone sling in place of fascia lata in 10 patients of lagophthalmos due to facial nerve palsy.


  Materials and Methods Top


A prospective interventional study was carried out from June 2011 to December 2012. Ten patients diagnosed as cases of lagophthalmos due to long standing facial palsy on the basis of clinical examination were selected. All patients except those unwilling to undergo trial were included after taking informed consent. The patients underwent modified TMT using silicone sling. All patients were evaluated preoperatively and postoperatively at day 1 and at 3 months under the following headings:

  • Lid gap (palpebral aperture) on gentle eye closure
  • Vertical interpalpebral distance in primary gaze
  • Associated problems due to lagophthalmos like exposure keratitis.


All the measurements were made using a ruler. The least count taken was 0.5 mm. The reading between two consecutive millimeter marks was recorded as 0.5 mm. Exposure keratitis was assessed by slit lamp examination for the reduction in corneal transparency at the exposed parts of the cornea.

Surgical technique

The procedure was done under local anesthesia. The area of skin incision was shaved prior to the procedure. The part was prepared with betadine. A horizontal skin incision was made in the preauricular region 2 cm in front of the tragus [Figure 1]a, bleeders isolated and tied off and the glistening temporalis fascia exposed from its origin to insertion [Figure 1]b. Both the superficial and deep temporal fasciae were then incised to expose all the muscle at this level [Figure 1]c. The temporal muscle strip was disinserted from its origin and the underlying temporal bone [Figure 1]d and reflected towards the zygoma (lateral wall of the orbit). The muscle was then advanced medially towards the zygomatic arch up to 3 mm from lateral canthal margin and divided into two strips. Two silicone slings were then sutured to the muscle ends in order to suffice the muscle to get attached with medial palpebral ligament or double armed silicone sling was passed through unstriped muscle [Figure 2]a and b. The sutured temporalis muscle with silicone sling was passed through subcutaneous tunnel by giving incision at 3 mm lateral to the lateral canthus enabling the muscle action to get transferred [Figure 2]c. Slings were further advanced in both upper and lower lids between the paralyzed orbicularis oculi and the skin. Finally, a sickle-shaped skin incision was given over the medial canthal ligament and the slings were brought out from below the medial palpebral ligament, tied, and secured to ensure proper eye lid closure and avoidance of silicone sling exposure over it [Figure 2]d. All skin incisions were sutured with 6-0 nylon and pressure dressing applied over the temple. The dressing was opened on the next day. [Figure 3]a and b show the pre- and postoperative photograph of a patient of lagophthalmos operated with above procedure.
Figure 1: (a) Horizontal skin incision in preauricular region. (b) Glistening temporal fascia exposed. (c) Exposed temporalis muscle. (d) Muscle strip disinserted from its origin

Click here to view
Figure 2: (a) Double armed silicone sling needle being passed through muscle end. (b) Silicone sling passed through the muscle end. (c) Sling being passed through the lateral canthal area. (d) Slings brought out through an incision at medial canthus

Click here to view
Figure 3: (a) Preoperative. (b) Postoperative

Click here to view


Our clinical criteria for successful outcome included lid gap <1 mm and improvement in corneal conditions. Paired t-test was used to compare pre- and postoperative means of lid gap during eye closure and palpebral aperture.

Ethics

The procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional or regional) and with the Declaration of Helsinki 1975, as revised in 2000.


  Results Top


A total of 10 patients including eight males and two females [Table 1] who had lagophthalmos due to facial nerve palsy were included. The mean age of surgery was 43.9 years [Table 1]. The procedure was highly successful in 80% (eight) patients (lid gap <1 mm) [Table 1]. The mean (SD) preoperative lid gap on eye closure of 7.7 (0.86) mm reduced to 0.5 (0.47) mm at day 1 of surgery and 0.70 (0.75) mm after 3 months of surgery [Figure 4]. The difference of the mean of lid gap at pre- and postoperative day one was 7.2 mm (P < 0.0001). The difference of mean of lid gap at pre- and postoperative 3 rd month was 7 mm (P < 0.0001). There was a significant reduction in palpebral aperture postoperatively [Table 1]. The mean (SD) preoperative vertical palpebral aperture was 12.05 (1.12) mm, which reduced to 10 (0.94) mm at day 1 of surgery and 10.35 (1.08) mm after 3 months of surgery [Figure 5]. The difference of means of palpebral aperture at pre- and postoperative day 1 was 2.05 mm (P = 0.0002). The difference of means of palpebral aperture at pre- and postoperative 3 rd month was 1.7 mm (P = 0.001). As defined by the success criteria, undercorrection was noted in two patients after the surgery. The gap remained the same (at 1 st day and 3 rd month) in one of the two patients (1.5 mm), but since there was no exposure nothing was done. The gap increased in one patient from 1 mm at day 1 of surgery to 2.5 mm at 3 rd month of follow-up; and since there was corneal exposure, retightening of the sling was required. The corneal condition improved in five out of six patients who had exposure keratopathy preoperatively.
Table 1: Patient data

Click here to view
Figure 4: Comparison of mean pre- and postoperative lid gaps in millimeters

Click here to view
Figure 5: Comparison of mean pre- and postoperative palpebral apertures in millimeters

Click here to view



  Discussion Top


Different methods have been described for correction of lagophthalmos. Two techniques which are widely accepted as major treatments for paralytic lagophthalmos following facial nerve palsy are lid loading and temporalis muscle transfer. Lid loading with gold implants is simpler to perform, but results in disruption of the tear film and irritation of the conjunctiva due to delayed closure of eyelids. [9] Similarly; migration, extrusion, and ptosis have also been reported after gold implantation. [10] It can also produce foreign body reactions. On the other hand, TMT restores active movement to paralyzed eyelids with high rates of success. Furthermore, no nerve or muscle is sacrificed, scar is hidden in hair bearing area. Several publications have reported the outcome of this procedure, but have recommended further improvements in the operative procedure.

Classic Gillies turnover technique has significant disadvantages like unesthetic hollowing of temporal fossa, an obvious bulge over zygomatic arch, loss of excursion of muscle due to turnover, and extensive difficult dissection; thus requiring high surgical skills.

McLauglin's technique needed intraoral dissection. Undue tension of fascial fixation may lead to unesthetic asymmetrical eyelid fissure.

Soares and Chew (1997) in their study on TMT in 51 patients of lagophthalmos due to leprosy, reported that the average lid gap preoperatively on light closure was 7.3 mm which was reduced to 3.2 mm on final follow-up, but complications like ectropion and ptosis were encountered in few eyes. [11] In our study there were no such complications.

Qian et al., (2004) compared long-term results of modified TMT with the Johnson's procedure in correction of paralytic lagophthalmos due to leprosy. The modifications were omitting the fascial strip in the lower eyelid to avoid postoperative ectropion and fixing the fascial strip of the upper eyelid to the middle or inner margin of the tarsal palate depending on the degree of the lagophthalmos to avoid possible ptosis of the upper eyelid. They observed 58.5% success rate with Johnson's TMT procedure, while 87.1% success rate in modified TMT. The postoperative ectropion and ptosis were much higher in the Johnson's TMT group than in modified TMT group. [12]

Miyamoto et al., (2009) in a retrospective study for the analysis of the success of TMT for the treatment of paralytic lagophthalmos observed complete eye closure in 78.7% patients. [13]

Ashfaq and Bhatty (2011) in a study reported that seven out of eight patients of paralytic lagophthalmos operated with TMT achieved satisfactory eye closure with resolution of epiphora and corneal irritation. [14]

Das et al., (2011) evaluated the success of TMT using palmaris longus or fascia lata in achieving the full lid closure in patients of lagophthalmos due to leprosy and concluded that 85% eyes could achieve full lid closure with no measurable gap (0 mm). [15]

The outcomes of the above mentioned modifications are similar to our study, but the additional advantage with our procedure is that no fascia lata sling dissection has to be carried out. Silicone slings are commonly available and also economical to use. Our surgical procedure is easier to perform than previous techniques and the surgical time is greatly reduced with significantly reduced morbidity to the patient. Moreover, there were no significant postoperative complications with our procedure. As with any reconstructive procedure adjustments should be checked carefully on the operating table so that the proper eyelid contour is maintained.

To conclude, modified TMT with silicone sling is a valuable technique for correction of lagophthalmos in long standing facial palsy. It is less extensive and so has less morbidity and is well-tolerated and can achieve good functional and cosmetic results.


  Acknowledgment Top


Dr. Sonal Tiwari.

 
  References Top

1.
Holland NJ, Weiner GM. Recent developments in Bell's palsy. BMJ 2004;329:553-7.  Back to cited text no. 1
    
2.
Gilden DH. Clinical practice. Bell's Palsy. N Engl J Med 2004;351:1323-31.  Back to cited text no. 2
[PUBMED]    
3.
Anastassov GE, Khater RH, Anastassov YK. Correction of paralytic lagophthalmos. Folia Med (Plovdiv) 2012;54:24-9.  Back to cited text no. 3
    
4.
Bergeron CM, Moe KS. The evaluation and treatment of upper eyelid paralysis. Facial Plast Surg 2008;24:220-30.  Back to cited text no. 4
[PUBMED]    
5.
Gillies H. Experiences with fascia lata grafts in the operative treatment of facial paralysis: (Section of Otology and Section of Laryngology). Proc R Soc Med 1934;27:1372-82.  Back to cited text no. 5
[PUBMED]    
6.
Anderson JG. Surgical treatment of lagophthalmos in leprosy by the Gillies temporalis transfer. Br J Plast Surg 1961;14:339-45.  Back to cited text no. 6
    
7.
McLaughlin CR. Surgical support in permanent facial paralysis. Plast Reconstr Surg (1946) 1953;11:302-14.  Back to cited text no. 7
    
8.
Breidahl AF, Morrison WA, Donato RR, Riccio M, Theile DR. A modified surgical technique for temporalis transfer. Br J Plast Surg 1996;49:46-51.  Back to cited text no. 8
    
9.
Jobe RP. A technique for lid loading in the management of the lagophthalmos of facial palsy. Plast Reconstr Surg 1974;53:29-32.  Back to cited text no. 9
[PUBMED]    
10.
Ueda K, Harii K, Yamada A, Asato H. A comparison of temporal muscle transfer and lid loading in the treatment of paralytic lagophthalmos. Scand J Plast Reconstr Surg Hand Surg 1995;29:45-9.  Back to cited text no. 10
    
11.
Soares D, Chew M. Temporalis muscle transfer in the correction of lagophthalmos due to leprosy. Lepr Rev 1997;68:38-42.  Back to cited text no. 11
    
12.
Qian J, Yan L, Zhang G. Long-term results of two temporalis muscle transfer procedures in correction of paralytic lagophthalmos. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2004;18:478-81.  Back to cited text no. 12
    
13.
Miyamoto S, Takushima A, Okazaki M, Momosawa A, Asato H, Harii K. Retrospective outcome analysis of temporalis muscle transfer for the treatment of paralytic lagophthalmos. J Plast Reconstr Aesthet Surg 2009;62:1187-95.  Back to cited text no. 13
    
14.
Ashfaq F, Bhatty MA. Modified temporalis muscle transfer for paralytic lagophthalmos in leprosy patients. MC 2011;17:5-8.  Back to cited text no. 14
    
15.
Das P, Kumar J, Karthikeyan G, Rao PS. Efficacy of temporalis muscle transfer for correction of lagophthalmos in leprosy. Lepr Rev 2011;82:279-85.  Back to cited text no. 15
    


    Figures

  [Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5]
 
 
    Tables

  [Table 1]



 

Top
 
 
  Search
 
    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
    Access Statistics
    Email Alert *
    Add to My List *
* Registration required (free)  

 
  In this article
Abstract
Materials and Me...
Results
Discussion
Acknowledgment
References
Article Figures
Article Tables

 Article Access Statistics
    Viewed1479    
    Printed23    
    Emailed1    
    PDF Downloaded227    
    Comments [Add]    

Recommend this journal