Limb function after excision of a deltoid muscle sarcoma.

Area of Science:

• Orthopedic oncology
• Surgical oncology
• Musculoskeletal tumor research

Background:

• Limb function post-deltoid muscle sarcoma excision is understudied.
• Large soft tissue defects from wide excision often lead to dysfunction.
• Hypothesized that excised deltoid muscle volume impacts functional outcomes.

Purpose of the Study:

• To investigate limb functional outcomes after deltoid muscle sarcoma resection.
• To examine the relationship between excised deltoid muscle volume and functional results.
• To evaluate clinical outcomes in patients with deltoid muscle sarcoma treated surgically.

Main Methods:

• Retrospective review of 8 patients with deltoid muscle soft tissue tumors.
• Evaluation of excision type (total, subtotal, partial), margins, reconstruction, complications, recurrence, metastasis, survival, and Musculoskeletal Tumor Society (MSTS) scores.
• Analysis of functional results using the MSTS scoring system.

Main Results:

• Reconstruction with latissimus dorsi or trapezius flaps used in 6/8 patients.
• Partial excision group achieved 100% MSTS score; subtotal and total excision groups scored 76.6% and 82.2%, respectively.
• No local recurrence observed in any patient.

Conclusions:

• Functional outcomes appear correlated with the volume of deltoid muscle excised.
• Latissimus dorsi and trapezius musculocutaneous flaps are effective for covering deltoid defects.
• These flaps do not significantly contribute to shoulder joint function restoration.